{"title":"Bacterial lipid structural diversity mediates commensalism and pathogenesis","authors":"Stacey L. Heaver, Ruth E. Ley","doi":"10.1038/s41579-026-01351-6","DOIUrl":"10.1038/s41579-026-01351-6","url":null,"abstract":"The human immune system must continuously distinguish between pathogenic bacteria and the numerous symbiotic bacteria that live in and on our bodies. In part, this distinction is driven by host sensing of specific lipid structures that comprise the bacterial membrane. Bacterial lipids from commensal and pathogenic bacteria alike are sensed via lipid recognition receptors, initiating downstream responses in the innate and adaptive immune systems. However, structural variations in the lipids from commensal bacteria tend to enable overall less stimulatory or more immunomodulatory outcomes following host recognition. This contributes to homeostatic immunity in their hosts, supporting normal immune development, proper immune responses and functional gut physiology. Conversely, in some pathogens, similar lipid modifications enable evasion or modulation of the immune system. Here, we review how the detection of pathogenic and commensal lipids via Toll-like receptor 2, Toll-like receptor 4 and CD1 lipid antigen presentation is mediated by bacterial lipid structure, with subsequent outcomes on host physiology. In this Review, Heaver and Ley overview the different lipid structures present in commensal and pathogenic bacteria and their recognition by Toll-like receptor 2, Toll-like receptor 4 and CD1 molecules, highlighting the different effects on host immune responses.","PeriodicalId":18838,"journal":{"name":"Nature Reviews Microbiology","volume":"24 11","pages":"754-770"},"PeriodicalIF":104.6,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148795819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shuo Liu, Bruce A Hungate, Kees Jan van Groenigen, Richard D Bardgett, Yongfu Li, Ji Chen
{"title":"Soil microbial conservation cannot rely on above-ground biodiversity.","authors":"Shuo Liu, Bruce A Hungate, Kees Jan van Groenigen, Richard D Bardgett, Yongfu Li, Ji Chen","doi":"10.1038/s41579-026-01358-z","DOIUrl":"10.1038/s41579-026-01358-z","url":null,"abstract":"","PeriodicalId":18838,"journal":{"name":"Nature Reviews Microbiology","volume":" ","pages":""},"PeriodicalIF":104.6,"publicationDate":"2026-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148762011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Infectious diseases in a changing climate","authors":"","doi":"10.1038/s41579-026-01346-3","DOIUrl":"10.1038/s41579-026-01346-3","url":null,"abstract":"Climate change is reshaping infectious disease risks by affecting the emergence and spread of human, animal and plant pathogens and by adding to the challenge of antimicrobial resistance. This Focus issue explores the links between climate change and infectious diseases and highlights the need for integrated, climate-informed responses. More broadly, this topic highlights the inequalities associated with the dual challenge posed by infectious diseases and climate change, with the greatest burdens falling on vulnerable populations. This Focus issue explores the links between climate change and infectious diseases and highlights the need for integrated, climate-informed responses. More broadly, this topic highlights the inequalities associated with the dual challenge posed by infectious diseases and climate change, with the greatest burdens falling on vulnerable populations.","PeriodicalId":18838,"journal":{"name":"Nature Reviews Microbiology","volume":"24 9","pages":"595-596"},"PeriodicalIF":104.6,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s41579-026-01346-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148710562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"More resources, less microbial diversity","authors":"Agustina Taglialegna","doi":"10.1038/s41579-026-01356-1","DOIUrl":"10.1038/s41579-026-01356-1","url":null,"abstract":"In a recent study, Shalev and colleagues demonstrate that enhanced resource diversity in microbial communities can reduce microbial biodiversity, challenging current ecological theories.","PeriodicalId":18838,"journal":{"name":"Nature Reviews Microbiology","volume":"24 10","pages":"680-680"},"PeriodicalIF":104.6,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148674027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Within-host gene transfer drives tobramycin resistance","authors":"Agustina Taglialegna","doi":"10.1038/s41579-026-01355-2","DOIUrl":"10.1038/s41579-026-01355-2","url":null,"abstract":"In a recent study, Karash and colleagues provide evidence for a resistance mechanism in which plasmid-mediated antibiotic resistance genes are horizontally transferred from transiently infecting bacteria to antibiotic-sensitive pathogens residing in patients’ lungs.","PeriodicalId":18838,"journal":{"name":"Nature Reviews Microbiology","volume":"24 10","pages":"679-679"},"PeriodicalIF":104.6,"publicationDate":"2026-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148670153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yong-Guan Zhu, Dong Zhu, Qing-Lin Chen, Matthias C Rillig
{"title":"Impacts of pollution on the soil microbiome.","authors":"Yong-Guan Zhu, Dong Zhu, Qing-Lin Chen, Matthias C Rillig","doi":"10.1038/s41579-026-01350-7","DOIUrl":"https://doi.org/10.1038/s41579-026-01350-7","url":null,"abstract":"<p><p>Soil microbiomes underpin terrestrial ecosystem functioning and drive nutrient cycling, plant productivity and ecological resilience. However, diverse pollutants, ranging from heavy metals and pesticides to plastics, perfluoroalkyl and polyfluoroalkyl substances and nanomaterials, are reshaping microbial communities in ways that threaten soil health and broader ecological stability. Thus, soils are hotspots of microbial evolution under chemical mixtures. Pollution alters microbial diversity, composition and functional capacity through mechanisms such as direct toxicity, shifts in soil chemistry and selective evolutionary pressures. These disruptions impair nutrient cycling, destabilize plant-microorganism interactions and accelerate the spread of antimicrobial resistance, with cascading effects on food webs and human health under a One Health framework. At the same time, soil microbiomes can serve as indicators of ecosystem stress and as tools for bioremediation and ecological restoration. This Review synthesizes current understanding of terrestrial pollution-microbiome interactions, highlights functional and health implications, and explores how microbiome-informed approaches can guide sustainable soil management and environmental protection under global change, while identifying key knowledge gaps and outlining future research directions for predictive and integrative microbiome-based solutions.</p>","PeriodicalId":18838,"journal":{"name":"Nature Reviews Microbiology","volume":" ","pages":""},"PeriodicalIF":104.6,"publicationDate":"2026-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148648864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Host–microbiota–pathogen interactions drive Salmonella enterica serovar Typhimurium pathogenesis","authors":"Andrés Vázquez-Torres","doi":"10.1038/s41579-026-01348-1","DOIUrl":"10.1038/s41579-026-01348-1","url":null,"abstract":"In immunocompetent hosts, Salmonella enterica serovar Typhimurium typically causes transient intestinal blooms with acute diarrhoea, followed by asymptomatic systemic carriage with intermittent reactivation. Inflammation elicited by bistable expression of type III secretion systems and pathogen-associated signals shapes Salmonella pathogenesis in both the intestine and systemic tissues. Inflammation is a two-sided coin that, over time, can either benefit or harm the host, microbiota and Salmonella. The host deploys the inflammasome, hypoxia and reactive oxygen and nitrogen species in both intestinal and systemic tissues, but the effectors of these responses are cell-specific and tissue-specific. Salmonella fine-tunes its metabolism and virulence programmes in response to chemical and physical cues derived from the microbiota and from heterogeneous host cells that vary in embryonic origin, architecture and activation states. Similar to its host, Salmonella undergoes coordinated virulence, metabolic, redox and energetic reprogramming with outcomes tailored to specific host cells and tissues. Paradoxically, Salmonella often exploits common signalling and metabolic pathways to support rapid growth in the gut lumen and in the cytosol of enterocytes while sustaining an energy-conserving and metabolic-conserving survival strategy in viscera. In this Review, I discuss current perspectives of how the dynamic interplay between microbial competition, host defences and Salmonella countermeasures determines the outcome of infection ranging from acute gastroenteritis to quiescent chronic infection. In this Review, Vázquez-Torres discusses our current understanding of how the dynamic interplay between microbial competition, host defences and Salmonella enterica serovar Typhimurium countermeasures determines the outcome of infection.","PeriodicalId":18838,"journal":{"name":"Nature Reviews Microbiology","volume":"24 11","pages":"804-820"},"PeriodicalIF":104.6,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148579461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rachel Rock, Shenwei Zhang, Cecilia Noecker, Peter J. Turnbaugh
{"title":"Eggerthella lenta: metabolism, pathogenesis and therapeutic implications","authors":"Rachel Rock, Shenwei Zhang, Cecilia Noecker, Peter J. Turnbaugh","doi":"10.1038/s41579-026-01344-5","DOIUrl":"10.1038/s41579-026-01344-5","url":null,"abstract":"Despite a tremendous body of literature on environmental Actinomycetota, their role in the human gut remains poorly understood. In this Review, we highlight the representative species Eggerthella lenta, which has emerged as a major player in the gut microbiota and is increasingly amenable to mechanistic dissection. We discuss the unique metabolic niche of this asaccharolytic obligate anaerobe, including growth on amino acids and short-chain fatty acids, versatile anaerobic respiratory capacity, and the extensive biotransformation of endogenous, diet-derived and pharmaceutical small molecules. E. lenta is associated with a wide range of chronic diseases in humans and sufficient to exacerbate disease in preclinical models, prompting a renewed consideration of the pathogenic potential of this common member of the gut microbiota. Further mechanistic dissection coupled with the development of microbiome-editing tools is essential to understand E. lenta and its multifaceted contributions to gut microbial ecology and host pathophysiology. Advancing microbiome research beyond well-studied bacterial species is key to understanding the full functional diversity and potential of the human gut microbiome. In this Review, Turnbaugh and colleagues explore the unique metabolism and pathogenic potential of Eggerthella lenta, supporting the feasibility and utility of studying diverse human-associated bacterial species.","PeriodicalId":18838,"journal":{"name":"Nature Reviews Microbiology","volume":"24 11","pages":"790-803"},"PeriodicalIF":104.6,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148579344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
David Mayo-Muñoz, Eugene V. Koonin, Rafael Pinilla-Redondo, Leise Riber
{"title":"Immune safeguarding as a conserved principle of antiviral defence","authors":"David Mayo-Muñoz, Eugene V. Koonin, Rafael Pinilla-Redondo, Leise Riber","doi":"10.1038/s41579-026-01349-0","DOIUrl":"10.1038/s41579-026-01349-0","url":null,"abstract":"All organisms defend against viral infections through active immunity mechanisms that clear the virus or population-level mechanisms that cause regulated cell death. Recent research increasingly shows that, across all domains of life, these two types of defence systems are coupled such that regulated cell death mechanisms safeguard or back up active immunity.","PeriodicalId":18838,"journal":{"name":"Nature Reviews Microbiology","volume":"24 10","pages":"677-678"},"PeriodicalIF":104.6,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148459582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}