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From Paleogene to Anthropocene: Evolution of Northeast Asian Frogs

In a groundbreaking synthesis that traverses geological epochs and ecological paradigms, recent research offers a comprehensive temporal and evolutionary framework for understanding anuran diversity in northeast Asia. This study, uniquely integrating vast phylogeographic datasets spanning over two decades, illuminates the dynamic interactions between environmental upheavals and evolutionary processes shaping frog lineages from the Paleogene through to the Anthropocene era.

Northeast Asia, a region marked by complex paleogeological histories, fluctuating climatic conditions, and increasing anthropogenic pressures, serves as a natural laboratory to unravel the intricacies of amphibian evolution. Amidst a plethora of fragmented phylogeographic studies, this synthesis stands out by harmonizing divergence timing with macroevolutionary drivers to reveal patterns hitherto obscure, offering an unprecedented panoramic view of regional anuran evolution.

Central to this ambitious undertaking is the collation and analysis of published divergence-time estimates for anuran species recorded from 1998 to the present. By aligning basal, stem, and crown age data points with temporal environmental variables, the researchers mapped a chronological narrative that directly associates lineage diversifications with major ecological and geological transformations, thereby identifying recurrent evolutionary drivers that have recurrently sculpted these amphibian assemblies.

The study delineates four principal evolutionary catalysts responsible for significant phylogenetic turnovers and demographic shifts within anuran populations. These include: the shifting paleogeological frameworks and emerging landscape barriers, oscillating climates and latitudinal gradients, cyclical glaciations paired with historical sea-level variations, and the intensified anthropogenic interventions characterizing recent epochs. Through this lens, each driver is contextualized within the temporal and spatial scales relevant to corresponding lineage divergences.

A particularly notable aspect of the analysis involves the utilization of time-calibrated genomic species trees paired with diversification modeling, an approach that successfully captures the nuanced evolutionary tempos and modes operating across major Northeast Asian frog families. This genomic architecture, juxtaposed with ecological trait datasets—specifically body size, elevational range, and latitudinal distribution—offers robust insights into the adaptive radiations and ecological breadth characterizing these amphibian clades.

Employing advanced Bayesian Analysis of Macroevolutionary Mixtures (BAMM), the research reconstructs trait evolution trajectories, revealing that Ranidae species consistently exhibit higher trait values over evolutionary timeframes. Such elevations in trait magnitude connote broader ecological amplitude and enhanced macroevolutionary expansion when compared to concurrent families such as Bufonidae and Microhylidae, signaling divergent ecological strategies underpinning their evolutionary success.

Beyond macroevolutionary analyses, the synthesis addresses contemporary conservation challenges by detecting genetic signatures indicative of human-mediated disturbances. These findings underscore the profound impact of anthropogenic activities on amphibian genetic diversity and population structure, emphasizing the urgency of integrating conservation genomics with evolutionary studies to safeguard regional biodiversity.

An intriguing discovery pertains to unresolved species boundaries within several anuran complexes, where interplays of multiple evolutionary drivers manifest as cryptic speciation events or ongoing hybridization. This complexity not only challenges traditional taxonomic classifications but also propels forward discussions on species delineation frameworks that incorporate genomic, ecological, and morphological data.

The study’s integrative approach extends to the synthesis of phenotypic, ecological, and macroevolutionary patterns utilizing openly accessible datasets. This comprehensive data amalgamation fosters a holistic understanding of how longitudinal environmental fluctuations have orchestrated lineage diversification and trait evolution, thereby grounding phylogeographic patterns within a broader evolutionary and ecological context.

Climate fluctuations, particularly linked to the pronounced latitudinal gradients in northeast Asia, emerge as pivotal factors influencing adaptive trait distributions and diversification rates. Fluctuating temperature regimes and shifting precipitation patterns have likely exerted selective pressures fostering ecological differentiation and localized adaptations, processes critical to elucidating the biogeographic mosaics observed today.

Sea-level changes accompanying glacial cycles further complicate the evolutionary landscape, intermittently disconnecting and reconnecting populations and facilitating allopatric speciation. These dynamics highlight the historical contingency embedded within contemporary phylogenies and emphasize the evolutionary significance of past climatic oscillations and paleogeographic rearrangements.

The explicit recognition of anthropogenic influences within the evolutionary framework reflects an important paradigm shift, linking human activity not only to immediate biodiversity loss but also to long-term evolutionary trajectories. Genetic imprints of habitat fragmentation, pollution, and translocation events attest to the pervasive reach of anthropogenic factors in shaping amphibian populations, potentially accelerating evolutionary processes or inducing maladaptive consequences.

By establishing a generalized framework that marries divergence timing with trait evolution and environmental drivers, this synthesis propels forward predictive modeling of biodiversity responses. Such frameworks are invaluable in projecting how ongoing environmental change may redefine evolutionary pathways, offering strategic foresight for biodiversity conservation under rapidly transforming global conditions.

Importantly, the researchers advocate for continued synthesis efforts, recommending that future investigations closely integrate genomic data with ecological and paleogeographic information. This interdisciplinary approach promises to unveil deeper evolutionary insights and refine conservation priorities, ensuring that amphibian diversity in northeast Asia remains resilient amid mounting ecological pressures.

The implications of these findings extend beyond amphibian biology, offering a blueprint for understanding how long-term environmental variability influences evolutionary processes across taxa, particularly in regions with complex historical and contemporary ecological interactions.

This synthesis not only enriches our comprehension of northeast Asian anurans but also exemplifies the profound explanatory power of integrating phylogeography, trait evolution, and macroevolutionary analytics. As biodiversity faces unprecedented threats, such integrative research embodies the critical scientific endeavor to decipher the past and guide the future of life’s intricate evolutionary tapestry.


Subject of Research: Phylogeography, trait evolution, and evolutionary drivers of northeast Asian anurans.

Article Title: From Paleogene to Anthropocene: phylogeography, geographic patterns of traits, and chronology of evolutionary drivers in northeast Asian anurans.

Article References:
Othman, S.N., Borzée, A. From Paleogene to Anthropocene: phylogeography, geographic patterns of traits, and chronology of evolutionary drivers in northeast Asian anurans. Heredity (2026). https://doi.org/10.1038/s41437-026-00856-3

Image Credits: AI Generated

DOI: 10.1038/s41437-026-00856-3

Keywords: Anuran phylogeography, evolutionary drivers, paleogeology, climate variability, glaciations, anthropogenic impacts, Bayesian macroevolutionary analysis, trait evolution, northeast Asia biodiversity, amphibian diversification

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Could Controlling Diabetes Help Prevent Dementia?

For many years, doctors treated diabetes and dementia as two separate health problems. Diabetes was mainly seen as a disease that affects blood sugar and damages organs such as the heart, kidneys, and eyes. Dementia was viewed as a disorder of memory and thinking that happens in the brain. Today, scientists are finding that these […]

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Alibaba lancia Qwen-Robot: l’AI che guida la nuova generazione di robot

Dopo averci lavorato per molto tempo, Alibaba ha infine presentato Qwen-Robot, una nuova famiglia di modelli progettata per consentire ai robot di comprendere l’ambiente circostante e agire in autonomia.

Parliamo in sostanza di intelligenza artificiale, ma strettamente specializzata a questo segmento, diversa quindi da quella che alimenta i chatbot di uso comune. Sviluppata dal Tongyi Lab e attualmente in fase di test con alcuni clienti aziendali di Alibaba Cloud, la suite Qwen-Robot è composta da tre modelli distinti, ognuno specializzato in un aspetto fondamentale dell’intelligenza fisica.

Grazie a essi si vuole permettere ai robot di interpretare istruzioni e comprendere ciò che vedono, ma anche di muoversi, interagire con gli oggetti e prevedere le conseguenze delle proprie azioni. I moderni modelli linguistici e multimodali possono descrivere come completare un’attività, ma trasformare quelle indicazioni in movimenti concreti richiede competenze molto diverse. Le soluzioni di Alibaba sono Qwen-RobotNav, dedicato alla navigazione e agli spostamenti, Qwen-RobotManip, focalizzato sulla manipolazione degli oggetti, e infine Qwen-RobotWorld, che funge da modello del mondo, prevedendo l’evoluzione degli ambienti e gli effetti delle azioni del robot.


La perfetta esperienza Android ad un piccolo prezzo? Google Pixel 9a, compralo al miglior prezzo da Smarterstore.it a 339 euro.

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Nuove batterie polimeriche per il freddo estremo: la proposta USA

Tra i problemi delle batterie al litio c'è quello della perdita di efficienza con temperature inferiori allo zero, e questo è un problema quando di parla di veicoli elettrici in aree nordiche. Un accumulatore capace di funzionare dove le tradizionali celle al litio iniziano a mostrare i loro limiti potrebbe portare una maggior elettrificazione nei trasporti ma anche in settori come quello dell’esplorazione spaziale, dove le escursioni termiche sono ancora più elevate.

Il progetto di cui vi parliamo oggi non viene da qualche grande gruppo, ma da Jaybelle Pranada, dottoranda della Texas A&M University, che ha attirato l’attenzione del Dipartimento dell’Energia degli Stati Uniti durante il Catalyzing Energy Education and Excellence Symposium, tenutosi ad aprile presso l’Arizona State University.

Tra quasi cento proposte provenienti da tutto il Paese, su nuove chimiche per batterie in grado di mantenere prestazioni affidabili anche in condizioni climatiche particolarmente severe, il lavoro della ricercatrice è riuscito a entrare nella top five.


La perfetta esperienza Android ad un piccolo prezzo? Google Pixel 9a, compralo al miglior prezzo da Smarterstore.it a 339 euro.

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Desflurane vs. Propofol: Impact on Elderly Brain Health

In the evolving landscape of anesthetic management for elderly patients, the impact of anesthetic agents on cognitive outcomes remains a critical area of investigation. Recent research published in BMC Geriatrics in 2026 has provided new insights into the differential effects of desflurane and propofol on perioperative neurocognitive disorders (PND) in older adults undergoing major urological surgeries. This randomized, controlled trial extends our understanding of how anesthetic choices may influence postoperative cognitive trajectories, a subject of immense importance given the increasing aging population and prevalence of complex surgeries in this demographic.

Perioperative neurocognitive disorders encompass a spectrum of cognitive impairments that arise in the perioperative period, including delirium and longer-lasting cognitive decline. Older adults are particularly susceptible due to age-related neurodegenerative changes, comorbidities, and the physiological stresses induced by anesthesia and surgery. Establishing whether specific anesthetics can exacerbate or mitigate these neurocognitive phenomena has significant implications for optimizing perioperative care and improving long-term functional outcomes for elderly patients.

The study under discussion rigorously compared desflurane, a volatile inhaled anesthetic known for its rapid onset and recovery, with propofol, an intravenous sedative-hypnotic agent valued for its favorable safety profile and neuroprotective properties observed in preclinical studies. The trial enrolled a robust cohort of older individuals scheduled for extensive urological procedures, randomizing them to receive either desflurane or propofol-based anesthesia. Cognitive function was meticulously assessed preoperatively and at multiple postoperative intervals using standardized neuropsychological tests sensitive to subtle cognitive changes, allowing for detailed temporal mapping of cognitive trajectories.

Findings from this investigation demonstrated notable differences between the two anesthetic regimens regarding the incidence and severity of perioperative neurocognitive disorders. Patients anesthetized with desflurane exhibited a higher frequency of early postoperative delirium and more pronounced cognitive decline at follow-ups compared to those who received propofol. These results resonate with emerging evidence suggesting that volatile anesthetics may contribute to neuroinflammation and neuronal stress, mechanisms hypothesized to underlie PND, whereas propofol’s antioxidative and anti-inflammatory effects potentially confer neuroprotection.

Critically, the study employed strict methodological standards to minimize bias and confounding, including blinding of outcome assessors and adjustment for variables such as baseline cognitive status, comorbidity burden, and surgical complexity. This rigorous approach increases confidence that the observed differences in cognitive outcomes stem from the anesthetic agents themselves rather than extraneous factors. Furthermore, the trial’s focus on major urological surgeries — procedures that are often lengthy and physiologically demanding — adds clinical relevance, as these patients typically face heightened risks of adverse neurocognitive sequelae.

The implications of these findings extend beyond a mere comparison of anesthetic efficacy and safety. They invite a reevaluation of perioperative protocols for elderly patients, advocating for anesthetic strategies that prioritize cognitive preservation alongside hemodynamic stability and analgesia. Propofol’s apparent advantage in attenuating PND risk may encourage clinicians to tailor anesthesia plans more judiciously, potentially integrating adjunctive measures such as enhanced monitoring of cerebral oxygenation and inflammation markers.

Mechanistically, the differential impact of desflurane and propofol on cognitive outcomes may relate to their interactions with neuronal glutamate receptors, modulation of synaptic plasticity, and influence on the blood-brain barrier permeability. Desflurane, despite its rapid elimination, has been associated with increased production of reactive oxygen species and microglial activation in animal models, processes that can trigger neuroinflammation and synaptic dysfunction. In contrast, propofol’s chemical structure facilitates scavenging of free radicals and suppression of pro-inflammatory cytokines, suggesting a neuroprotective milieu during the vulnerable perioperative period.

Additionally, this study sheds light on the critical period immediately after surgery, where interventions targeting delirium prevention could be best leveraged. The higher delirium rates observed with desflurane highlight the necessity for vigilant postoperative cognitive assessments and early rehabilitative efforts in patients exposed to volatile anesthetics. Conversely, the more favorable cognitive profile seen with propofol might translate into shorter hospital stays, reduced postoperative complications, and better quality of life trajectories, outcomes that remain to be explored in subsequent longitudinal research.

Beyond the direct effects on cognition, the choice of anesthetic also influences systemic physiological responses including hemodynamic fluctuations and respiratory function, which can indirectly affect brain perfusion and oxygenation. This study’s comprehensive monitoring protocols provide a nuanced framework for balancing these considerations while still focusing on optimizing neurological outcomes in frail and complex surgical populations.

The authors acknowledge certain limitations such as the single-center design and the need for larger-scale multicenter studies to validate these results across diverse patient populations and surgical contexts. Nonetheless, this investigation constitutes a significant advancement in the personalized management of anesthesia in elderly patients, framing future research priorities that integrate neurocognitive outcomes as central endpoints in anesthesiology trials.

In conclusion, this landmark trial delineates a clear divergence in neurocognitive outcomes based on the anesthetic agent used, favoring propofol over desflurane in terms of mitigating perioperative neurocognitive disorders in older adults undergoing major urological surgery. These insights compel a paradigm shift towards individualized anesthetic regimens that prioritize cognitive health, thereby enhancing recovery trajectories and long-term well-being in the vulnerable aging population. As the global burden of neurocognitive disorders grows, such targeted perioperative strategies stand poised to transform clinical practice and elevate standards of geriatric surgical care profoundly.


Subject of Research: Effects of anesthetic agents on perioperative neurocognitive disorders in elderly patients undergoing major urological surgery.

Article Title: Effect of desflurane versus propofol on perioperative neurocognitive disorders in older adults undergoing major urological surgery: a randomized trial.

Article References:
Somnuke, P., Siriussawakul, A., Pongraweewan, O. et al. Effect of desflurane versus propofol on perioperative neurocognitive disorders in older adults undergoing major urological surgery: a randomized trial. BMC Geriatr (2026). https://doi.org/10.1186/s12877-026-07823-x

Image Credits: AI Generated

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Emotion Regulation Drives VR Therapy for Auditory Hallucinations

In recent years, the use of virtual reality (VR) in clinical psychology has surged, offering innovative approaches to treat some of the most challenging mental health conditions. A groundbreaking study published in 2026 by Glenthøj, Vernal, Mariegaard, and colleagues in Schizophrenia examines an essential question: can emotion regulation be identified as a primary mechanism driving the efficacy of virtual reality-assisted therapy for auditory hallucinations? This investigation, a secondary analysis stemming from the CHALLENGE randomized clinical trial, shines a new light on how immersive technologies might not just help manage symptoms but actively transform the neuropsychological processes underlying psychosis.

Auditory hallucinations, or hearing voices that are not present, are among the most debilitating symptoms experienced by individuals with schizophrenia and related disorders. Conventional treatments, while somewhat effective, often leave patients with residual symptoms, significantly impairing their quality of life. The advent of VR-assisted therapy offers a promising frontier by immersing patients in controlled, yet highly realistic environments where they can confront and modulate their hallucinatory experiences under therapeutic guidance. The CHALLENGE trial represents one of the largest and most comprehensive efforts to rigorously assess these interventions and tease apart the psychological factors mediating their success.

This study’s unique contribution lies in its focus on emotion regulation as the potential key mechanism of therapeutic change. Emotion regulation refers to the complex set of cognitive and behavioral processes through which individuals influence their emotional experiences, expressions, and responses. In psychosis, dysregulated emotional reactions to hallucinations can exacerbate distress and dysfunction, creating a vicious cycle of increased symptom severity. By using VR to simulate hallucinatory voices within a safe environment, patients may practice adaptive emotion regulation strategies that reduce the impact of their symptoms in daily life.

The methodology underpinning this secondary analysis involved sophisticated statistical modeling to track changes in patients’ emotion regulation capabilities alongside reductions in hallucination severity and distress over the course of VR therapy. Participants underwent multiple VR sessions designed to confront hallucinations through interactive avatars representing the voices, coupled with real-time coaching in cognitive reappraisal, mindfulness, and distress tolerance techniques. This allowed researchers to dynamically examine how improvements in managing emotions corresponded with clinical outcomes, offering evidence for causality rather than mere correlation.

Findings suggest that emotion regulation improvements significantly mediated the reduction of hallucination-related distress and overall symptom burden. Patients who demonstrated greater gains in their ability to reinterpret and modulate negative emotional responses to the voices subsequently reported notably diminished auditory hallucination severity. Such results provide compelling experimental support for emotion regulation as a central therapeutic mechanism in VR-assisted interventions, marking a pivotal advancement in psychosis treatment models.

From a neuroscientific perspective, these results align well with emerging understandings of the neural substrates involved in psychosis. Dysfunction within prefrontal-limbic circuits, which govern emotional control and executive function, is thought to underpin many psychotic symptoms. VR therapy may promote neuroplasticity within these networks by encouraging patients to engage in adaptive emotional strategies repeatedly in immersive, salient contexts, effectively rewiring maladaptive patterns that perpetuate hallucinations and distress.

Moreover, the immersive and interactive attributes of VR make it uniquely suited to facilitate experiential learning in emotion regulation. Unlike traditional talk therapy, VR creates visceral, multi-sensory exposures that can evoke authentic emotional responses. This experiential intensity may enhance the encoding and generalization of therapeutic gains, supporting transfer of emotion regulation skills into everyday challenging encounters with hallucinations. The personalized, graded nature of VR exposures further tailors treatment to individual patients’ needs and tolerance levels, optimizing clinical impact.

Importantly, this study also addresses critical questions about the durability and specificity of these effects. Secondary analyses revealed that emotion regulation gains were maintained at follow-up assessments several months post-therapy, suggesting lasting positive neuropsychological change rather than transient symptom suppression. Additionally, these improvements were specific to emotion regulation constructs rather than generalized cognitive or attentional abilities, underscoring the targeted nature of VR’s therapeutic impact.

These insights offer profound clinical implications. By pinpointing emotion regulation as a core mechanism, future interventions can increasingly focus on honing these skills within VR platforms, potentially integrating neurofeedback, bio-sensing, or adaptive difficulty adjustments to accelerate recovery. Furthermore, emotion regulation could serve as a predictive biomarker to identify patients most likely to benefit from VR-assisted therapy, enabling precision psychiatry approaches tailoring treatment plans according to individual emotional processing profiles.

The study’s implications extend beyond psychosis treatment per se, offering a conceptual framework for utilizing VR in other psychiatric domains where emotional dysregulation plays a pivotal role, such as anxiety disorders, PTSD, and depression. By demonstrating how immersive technologies can catalyze emotion regulation neural circuits, this research paves the way for wide-reaching applications of VR as a transformative therapeutic tool in mental health care.

Nevertheless, the authors acknowledge ongoing challenges in scaling VR therapies, including technological accessibility, patient engagement variability, and the need for standardized protocols to ensure intervention fidelity. Ethical considerations surrounding the intensity of VR experiences and the safeguarding of vulnerable patients also merit ongoing scrutiny as this field evolves. Continued randomized trials with larger samples and diverse populations will be essential to consolidate evidence and inform best practice guidelines.

In summary, the CHALLENGE trial secondary analyses present a landmark investigation revealing that emotion regulation improvements are not merely outcomes but active mechanisms driving symptom improvement in VR-assisted therapy for auditory hallucinations. This discovery heralds a new era where immersive therapeutics grounded in robust neuropsychological theory have the potential to reshape mental health treatment paradigms fundamentally.

As virtual reality continues to infiltrate clinical settings, the intersection of technology and psychology promises unprecedented opportunities to unlock healing mechanisms once obscured by conventional approaches. This pioneering research by Glenthøj et al. charts a visionary pathway—one where harnessing the brain’s intricate emotional machinery through immersive digital environments can rewrite the narratives of suffering for individuals grappling with psychosis worldwide.

The convergence of virtual environments, cognitive science, and clinical innovation showcased in this work highlights a future where mental illness is not merely managed but dynamically transformed through mechanistic precision in therapy design. For patients burdened by the relentless voices of auditory hallucinations, the promise of VR-assisted emotion regulation offers a beacon of hope toward reclaiming agency, resilience, and meaning in their lives.


Subject of Research: Emotion regulation as a mechanism of change in virtual reality-assisted therapy for auditory hallucinations.

Article Title: Is emotion regulation a mechanism of change in virtual reality-assisted therapy for auditory hallucinations? Secondary analyses of the CHALLENGE randomized clinical trial.

Article References:
Glenthøj, L.B., Vernal, D.L., Mariegaard, L.S. et al. (2026). Is emotion regulation a mechanism of change in virtual reality-assisted therapy for auditory hallucinations? Secondary analyses of the CHALLENGE randomized clinical trial. Schizophrenia. https://doi.org/10.1038/s41537-026-00779-2

Image Credits: AI Generated

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This Health Issue After Surgery Can Predict Cognitive Decline in Older Adults

When older adults undergo surgery, doctors often focus on complications such as infections, bleeding, or heart problems. Yet one of the most common complications affects the brain. Known as postoperative delirium, this condition can cause sudden confusion, disorientation, memory difficulties, and changes in behavior. Many families assume that delirium is temporary. In some cases, symptoms […]

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La Voyager 1 no chocó contra una pared de fuego, pero sí cruzó una frontera caliente y casi vacía. El borde del Sol es mucho más extraño de lo que imaginábamos

La llamada “pared de fuego” detectada por las Voyager no es una muralla literal ni un descubrimiento recién ocurrido. Es una forma llamativa de describir la heliopausa, la frontera donde la burbuja creada por el Sol se encuentra con el medio interestelar. Sus temperaturas pueden alcanzar decenas de miles de kelvin, pero el plasma es tan tenue que las sondas pudieron cruzarlo sin quemarse.

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Una colina sagrada de Indonesia fue presentada como una pirámide de 25.000 años. La historia fascinó al mundo, hasta que los arqueólogos señalaron el problema: faltaban pruebas humanas

Gunung Padang, en Indonesia, es un sitio megalítico real, antiguo y fascinante. Pero la hipótesis de que escondía una pirámide construida hace 25.000 años no resistió el escrutinio científico. La revista Archaeological Prospection terminó retractando el estudio que impulsó la polémica, al considerar que las dataciones usadas no estaban vinculadas de forma fiable con actividad humana.

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Un buscador de naufragios aseguró haber encontrado la Santa María bajo las aguas de Haití. La historia parecía enorme, pero la UNESCO dejó una advertencia clave: ese barco no era el de Colón

El supuesto hallazgo de la Santa María frente a Haití reactivó uno de los grandes misterios de la arqueología subacuática: dónde terminó la nave insignia de Cristóbal Colón tras encallar en 1492. Barry Clifford defendió que había localizado sus restos, pero un informe de la UNESCO concluyó que el pecio pertenecía a una época mucho más reciente.

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Einstein explicó la gravedad como curvatura del espacio-tiempo, pero una nueva propuesta intenta contarla con el lenguaje del Modelo Estándar. La idea no tumba la relatividad: busca hacerla compatible con la física cuántica

Mikko Partanen y Jukka Tulkki, de la Universidad Aalto, proponen describir la gravedad como una teoría gauge compatible con las simetrías del Modelo Estándar. La hipótesis no reemplaza de golpe a Einstein ni resuelve todavía la gravedad cuántica, pero abre una vía interesante para atacar uno de los problemas más difíciles de la física moderna.

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Rice Roots Attract Bacillus Using Heptadecanoic Acid

In a groundbreaking revelation that could reshape our understanding of plant-microbe interactions and agricultural biotechnology, researchers have unveiled a novel chemical communication mechanism between rice roots and beneficial soil bacteria. This newly discovered pathway centers on the secretion of heptadecanoic acid, a specific fatty acid, which effectively recruits Bacillus species to the rhizosphere, the densely populated soil region surrounding plant roots. Such a mechanism not only highlights the intricate biochemical dialogues that underpin plant-microbe symbioses but also opens promising avenues for sustainable crop management through microbiome engineering.

Rice, a staple food that sustains more than half of the world’s population, has long been studied for its interactions with the soil ecosystem. The rhizosphere harbors myriad microbial communities, some of which promote plant health by enhancing nutrient acquisition, defending against pathogens, or improving stress tolerance. Identifying the exact signals that facilitate recruitment of beneficial bacteria has presented a considerable scientific challenge. The recent study by Zeng, Wen, Zhao, and colleagues provides essential insights and fills a critical gap by pinpointing heptadecanoic acid as a chemical attractant secreted by rice roots, which acts as a molecular beacon for Bacillus.

Heptadecanoic acid, also known as margaric acid, is a saturated fatty acid containing 17 carbon atoms. Traditionally, plant root exudates—complex mixtures of organic acids, sugars, amino acids, and secondary metabolites—have been observed to influence microbial colonization, but the specific involvement of fatty acids as signals was less appreciated. The team’s meticulous biochemical analyses have now elucidated that rice roots not only exude heptadecanoic acid but do so strategically when recruiting beneficial Bacillus species. This revelation signifies a refined understanding of the selective microbial recruitment strategies employed by plants.

The team’s research employed an array of advanced techniques—ranging from root exudate profiling through gas chromatography-mass spectrometry (GC-MS) to microbial chemotaxis assays—to validate that Bacillus species detect and are attracted to gradients of heptadecanoic acid in the rhizosphere. Importantly, not all soil microbes respond equivalently, underscoring the specificity of this fatty acid signal. Functional studies further demonstrated that disrupting rice root production of heptadecanoic acid diminished Bacillus colonization, which correspondingly weakened the plant’s resistance to common soil-borne pathogens.

Understanding the biochemical basis for such recruitment enables scientists to rethink approaches to crop protection and enhancement. Bacillus species are well-known for their plant growth-promoting traits, including production of antimicrobial compounds, enhancement of nutrient solubilization, and induction of systemic resistance in plants. By harnessing the heptadecanoic acid signaling pathway, it is conceivable that agricultural inoculants could be optimized to improve colonization efficiency and consistency in field conditions, potentially reducing the need for chemical pesticides and fertilizers.

This molecular dialogue highlights a sophisticated communication network where plants actively shape their microbial environment. The discovery that a fatty acid functions not merely as a structural or energy-storage molecule but as a signaling compound redefines our conception of root exudate complexity. Moreover, heptadecanoic acid’s hydrophobic nature prompts questions about its diffusion dynamics in soil and the mechanisms by which Bacillus receptors detect it. Future exploration into bacterial chemoreceptors and downstream signaling pathways activated by this molecule could illuminate novel targets for microbiome manipulation.

Beyond direct agricultural implications, this finding resonates with broader ecological principles. The soil microbiome’s composition significantly influences plant community dynamics, ecosystem productivity, and resilience to environmental stresses. By uncovering a precise mediator of microbe recruitment, the work by Zeng and colleagues contributes to the fundamental ecological theory of plant-soil feedback loops, suggesting that plants possess active biochemical agency in curating their microbial consortia.

Interestingly, the secretion of heptadecanoic acid is not constant but modulated by environmental cues and plant developmental stages, emphasizing the dynamic nature of root exudation profiles. This temporal regulation indicates that plants might selectively recruit beneficial microbes in response to specific physiological needs or external threats, adding an adaptive dimension to this interaction. Understanding these controls could inform timing strategies for microbial inoculant application in agriculture to coincide with natural recruitment periods.

The authors also raise intriguing evolutionary considerations. The conserved ability among rice varieties to secrete heptadecanoic acid suggests selective pressure favoring plants capable of enlisting Bacillus partners. Parallel studies on other cereal crops could reveal whether this fatty acid signaling is a widespread mechanism or unique to rice. Such comparative analyses across plant taxa may unearth a broader family of fatty acid signals mediating symbioses and expand the toolkit for synthetic microbiome engineering.

This pioneering investigation underscores the necessity of interdisciplinary approaches combining plant biology, microbiology, analytical chemistry, and ecology to fully decipher plant-microbe interactions. It leverages cutting-edge omics technologies and bioinformatics pipelines to characterize metabolite profiles and microbial responses, illustrating the power of integrative science. The robust experimental design and reproducible methodologies set a new benchmark for future studies aiming to parse root exudate signaling.

As the global agricultural sector grapples with the challenges of increasing food production sustainably on finite arable land under climate change pressures, the discovery of a natural plant mechanism to recruit growth-promoting and protective microbes represents a potentially transformative tool. Strategies informed by such foundational knowledge could reduce reliance on synthetic inputs, lower environmental footprints, and enhance crop resilience, aligning with ambitious global sustainability goals.

In conclusion, the identification of heptadecanoic acid as a pivotal signaling molecule secreted by rice roots to attract beneficial Bacillus species marks an exciting advance in the field of plant-microbe research. It unravels a previously unrecognized layer of biochemical communication with profound implications for agriculture and ecology. Continued investigation into the molecular details, environmental regulation, and cross-species relevance of this signaling mechanism promises to unlock innovative avenues for crop improvement and sustainable farming practices worldwide.


Subject of Research: Plant-microbe interactions focusing on the biochemical signaling between rice roots and Bacillus species mediated by heptadecanoic acid secretion.

Article Title: Author Correction: Rice roots recruit Bacillus via the secretion of heptadecanoic acid.

Article References: Zeng, J., Wen, T., Zhao, J. et al. Author Correction: Rice roots recruit Bacillus via the secretion of heptadecanoic acid. Nat. Plants (2026). https://doi.org/10.1038/s41477-026-02341-5

Image Credits: AI Generated

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El cristianismo sigue siendo la religión más grande del mundo, pero el mapa global de la fe ya no se mueve como antes. El islam crece por demografía y los no afiliados avanzan por abandono religioso

Un informe del Pew Research Center muestra cómo cambió el mapa religioso global entre 2010 y 2020. El cristianismo continúa siendo el grupo más numeroso, pero perdió peso relativo; el islam fue la religión que más creció; y las personas sin afiliación religiosa aumentaron pese a tener una desventaja demográfica.

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Scientists Discover the “Achilles’ Heel” of Two of the World’s Deadliest Diarrhea Bacteria

Fleckenstein ETECScientists have uncovered a shared target used by multiple diarrhea-causing bacteria to invade the gut. Despite decades of research, scientists still do not have vaccines against two of the world’s most common causes of severe bacterial diarrhea: enterotoxigenic E. coli (ETEC) and Shigella. Together, these pathogens infect hundreds of millions of people each year and [...]
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Arabia Saudí quiso levantar un cubo de 400 metros para convertirlo en el nuevo icono de Riad. El Mukaab prometía una ciudad inmersiva dentro de un edificio, pero su futuro ya no parece tan sólido

El Mukaab fue presentado como el gran icono de New Murabba, el nuevo distrito urbano de Riad: un cubo de 400 metros por lado, con experiencias inmersivas, comercios, hoteles, viviendas y tecnología holográfica. Pero el proyecto, anunciado como una pieza central de la Visión 2030 saudí, también revela algo menos espectacular: la dificultad de convertir la arquitectura de ciencia ficción en una obra viable.ero el proyecto, anunciado como una pieza central de la Visión 2030 saudí, también revela algo menos espectacular: la dificultad de convertir la arquitectura de ciencia ficción en una obra viable.

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Why Older Adults Need To Pay Closer Attention to Vitamin B12

Vitamin B12 NewspaperVitamin B12 is needed in only trace amounts, yet its absence can have far-reaching effects. Two micrograms is an almost unimaginably small amount. It weighs less than a tiny fragment of a grain of table salt. Yet adults need only around this amount of vitamin B12 each day, depending on the guideline used, to support [...]
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Las empresas compran Bitcoin como si hubieran descubierto tarde el oro digital. Pero el verdadero poder de la red sigue estando en las claves privadas, los usuarios y una escasez que nadie puede imprimir

La entrada de compañías, fondos cotizados y gobiernos cambió la imagen pública de Bitcoin, pero no necesariamente su centro de gravedad. Aunque empresas como Strategy acumulan cantidades enormes de BTC, la propiedad del activo no equivale al control de la red. Ahí sigue estando la idea original: reglas fijas, emisión limitada y poder distribuido entre quienes custodian sus propias claves.

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