Environmental Microbiology Reports最新文献_第6页

Hidden Allies: Decoding the Core Endohyphal Bacteriome of Aspergillus fumigatus 隐藏的盟友：解码烟曲霉核心菌丝内菌群

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2025-08-19 DOI: 10.1111/1758-2229.70153

Daryna Piontkivska, João M. P. Jorge, Dalila Mil-Homens, Tiago M. Martins, Pedro Crespo, Demosthenes P. Morales, Dinah Carvalho, José Melo-Cristino, Raquel Sá-Leão, Gustavo H. Goldman, Cristina Silva Pereira

{"title":"Hidden Allies: Decoding the Core Endohyphal Bacteriome of Aspergillus fumigatus","authors":"Daryna Piontkivska, João M. P. Jorge, Dalila Mil-Homens, Tiago M. Martins, Pedro Crespo, Demosthenes P. Morales, Dinah Carvalho, José Melo-Cristino, Raquel Sá-Leão, Gustavo H. Goldman, Cristina Silva Pereira","doi":"10.1111/1758-2229.70153","DOIUrl":"10.1111/1758-2229.70153","url":null,"abstract":"Bacterial–fungal interactions that influence the behaviour of one or both organisms are common in nature. Well-studied systems include endosymbiotic relationships that range from transient to long-term associations. Diverse endohyphal bacteria associate with fungal hosts, emphasising the need to better comprehend the fungal bacteriome. We evaluated the hypothesis that Aspergillus fumigatus harbours an endohyphal community of bacteria that influence the host phenotype. We analysed whether 38 A. fumigatus strains show stable association with diverse endohyphal bacteria; all derived from single-conidium cultures that were subjected to antibiotic and heat treatments. The fungal bacteriome, inferred through analysis of bacterial diversity within the fungal strains (short- and long- read sequencing methods), revealed the presence of core endohyphal bacterial genera. Microscopic analysis further confirmed the presence of endohyphal bacteria. The fungal strains exhibited high genetic diversity and phenotypic heterogeneity in drug susceptibility and in vivo virulence. No correlations were observed between genomic or functional traits and bacteriome diversity, but the abundance of some bacterial genera correlated with fungal virulence or posaconazole susceptibility. The observed endobacteriome may play functional roles, for example, nitrogen fixation. Our study emphasises the existence of complex interactions between fungi and endohyphal bacteria, possibly impacting the phenotype of the fungal host, including virulence.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 4","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://enviromicro-journals.onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70153","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144869541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hidden Allies: Decoding the Core Endohyphal Bacteriome of Aspergillus fumigatus 隐藏的盟友：解码烟曲霉核心菌丝内菌群

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2025-08-19 DOI: 10.1111/1758-2229.70153

Daryna Piontkivska, João M. P. Jorge, Dalila Mil-Homens, Tiago M. Martins, Pedro Crespo, Demosthenes P. Morales, Dinah Carvalho, José Melo-Cristino, Raquel Sá-Leão, Gustavo H. Goldman, Cristina Silva Pereira

{"title":"Hidden Allies: Decoding the Core Endohyphal Bacteriome of Aspergillus fumigatus","authors":"Daryna Piontkivska, João M. P. Jorge, Dalila Mil-Homens, Tiago M. Martins, Pedro Crespo, Demosthenes P. Morales, Dinah Carvalho, José Melo-Cristino, Raquel Sá-Leão, Gustavo H. Goldman, Cristina Silva Pereira","doi":"10.1111/1758-2229.70153","DOIUrl":"10.1111/1758-2229.70153","url":null,"abstract":"Bacterial–fungal interactions that influence the behaviour of one or both organisms are common in nature. Well-studied systems include endosymbiotic relationships that range from transient to long-term associations. Diverse endohyphal bacteria associate with fungal hosts, emphasising the need to better comprehend the fungal bacteriome. We evaluated the hypothesis that Aspergillus fumigatus harbours an endohyphal community of bacteria that influence the host phenotype. We analysed whether 38 A. fumigatus strains show stable association with diverse endohyphal bacteria; all derived from single-conidium cultures that were subjected to antibiotic and heat treatments. The fungal bacteriome, inferred through analysis of bacterial diversity within the fungal strains (short- and long- read sequencing methods), revealed the presence of core endohyphal bacterial genera. Microscopic analysis further confirmed the presence of endohyphal bacteria. The fungal strains exhibited high genetic diversity and phenotypic heterogeneity in drug susceptibility and in vivo virulence. No correlations were observed between genomic or functional traits and bacteriome diversity, but the abundance of some bacterial genera correlated with fungal virulence or posaconazole susceptibility. The observed endobacteriome may play functional roles, for example, nitrogen fixation. Our study emphasises the existence of complex interactions between fungi and endohyphal bacteria, possibly impacting the phenotype of the fungal host, including virulence.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 4","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://enviromicro-journals.onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70153","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144869657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Interaction Between the Nematode Caenorhabditis elegans and Its Coexisting Fungal Microbiome Member Barnettozyma californica 秀丽隐杆线虫与共生真菌微生物组成员加利福尼亚巴奈特菌的相互作用

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2025-08-19 DOI: 10.1111/1758-2229.70177

Carola Petersen, Hanne Griem-Krey, Christina Martínez Christophersen, Hinrich Schulenburg, Michael Habig

{"title":"The Interaction Between the Nematode Caenorhabditis elegans and Its Coexisting Fungal Microbiome Member Barnettozyma californica","authors":"Carola Petersen, Hanne Griem-Krey, Christina Martínez Christophersen, Hinrich Schulenburg, Michael Habig","doi":"10.1111/1758-2229.70177","DOIUrl":"10.1111/1758-2229.70177","url":null,"abstract":"The nematode Caenorhabditis elegans is known to feed on and interact with bacteria in its environment and has become a model organism for microbiome studies. However, whether and how C. elegans interacts with co-occurring fungi remains largely unknown, despite the presence of many fungal species in its natural habitat. Here, we isolate the yeast Barnettozyma californica from a mesocosm experiment with C. elegans and characterise its genome and interaction with the nematode. We find that, like bacterial microbiota, B. californica can colonise the intestine of C. elegans and can serve as a sole, albeit poor, food source for adult nematodes. Yet, when present together with Escherichia coli OP50, the fungus can lead to higher population growth and altered foraging behaviour, suggesting a context-dependent benefit. This effect varied between different natural C. elegans strains, suggesting a genomic basis for the nematode's interaction with B. californica. On the fungal side, we could not identify any obvious candidate genes for its interaction with C. elegans and/or E. coli OP50, despite obtaining a fully assembled and annotated genome of the isolated B. californica strain. Overall, our results provide an intriguing example of the complexity and multi-level relationship between naturally interacting fungi, bacteria and animals.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 4","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://enviromicro-journals.onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70177","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144869769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genetic Drivers of Plant Root Colonisation by the Biocontrol Agent Pseudomonas protegens Pf-5 假单胞菌蛋白Pf-5对植物根定植的遗传驱动

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2025-08-19 DOI: 10.1111/1758-2229.70179

Timothy M. Ghaly, Belinda K. Fabian, Silas H. W. Vick, Christie Foster, Amy J. Asher, Karl A. Hassan, Liam D. H. Elbourne, Ian T. Paulsen, Sasha G. Tetu

{"title":"Genetic Drivers of Plant Root Colonisation by the Biocontrol Agent Pseudomonas protegens Pf-5","authors":"Timothy M. Ghaly, Belinda K. Fabian, Silas H. W. Vick, Christie Foster, Amy J. Asher, Karl A. Hassan, Liam D. H. Elbourne, Ian T. Paulsen, Sasha G. Tetu","doi":"10.1111/1758-2229.70179","DOIUrl":"10.1111/1758-2229.70179","url":null,"abstract":"Plant growth-promoting bacteria can confer a range of health benefits to plants, and are increasingly being used in agriculture as bioinoculants to enhance crop performance and prevent diseases. However, within complex rhizosphere communities, their success as bioinoculants depends heavily on their capacity to competitively colonise root systems. Here, we uncover genetic determinants of root colonisation by the biocontrol agent Pseudomonas protegens Pf-5, known for its ability to suppress multiple plant diseases. Using Transposon-Directed Insertion Site Sequencing (TraDIS), we systematically assayed the entire P. protegens Pf-5 genome to determine genes involved in colonising the rhizoplane of two key agricultural crops, cotton (n = 153 Pf-5 genes) and wheat (n = 110 Pf-5 genes). We find a large overlap of 80 P. protegens Pf-5 genes which are important for colonisation fitness in both plants, suggesting that these encode core traits linked to root colonisation. In-depth functional annotation of these genes, leveraging both protein sequence and structure, reveals key traits that promote P. protegens Pf-5 rhizoplane fitness, including biofilm formation, surface motility, nucleotide and amino acid biosynthesis, sugar catabolism, iron uptake, low-oxygen growth, and stress response mechanisms. These findings can help guide future design and selection of microbial inoculants with improved capacity for competitive root colonisation.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 4","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://enviromicro-journals.onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70179","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144869539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Digestive Microbiome Diversity of the Least Killifish, Heterandria formosa, and Its Implications for Host Adaptability to Varying Trophic Levels 最小鳉鱼的消化微生物群多样性及其对不同营养水平寄主适应性的影响

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2025-08-12 DOI: 10.1111/1758-2229.70164

Benjamin D. Pluer, Joseph Travis

{"title":"The Digestive Microbiome Diversity of the Least Killifish, Heterandria formosa, and Its Implications for Host Adaptability to Varying Trophic Levels","authors":"Benjamin D. Pluer, Joseph Travis","doi":"10.1111/1758-2229.70164","DOIUrl":"10.1111/1758-2229.70164","url":null,"abstract":"Symbiotic microbes, in associations with aquatic hosts, aid in the acquisition of nutrients, breakdown xenobiotics, and contribute to immune system function. If associations with microbial communities facilitate host adaptation to different ecosystems, understanding the important ecological factors that act as drivers of differences among conspecific populations' microbiomes can help conservation efforts to promote beneficial interactions between fish and their microbiome for freshwater fish species facing rapid environmental changes. Here we describe the microbial communities in the gut of a freshwater fish, Heterandria formosa, in spring habitats using 16S rRNA sequencing. We quantified microbiota composition and diversity among springs ranging from oligotrophic to near eutrophic to determine the extent to which the microbiota are associated with different environmental conditions. We found higher microbial richness at sites with lower nutrient load stress. At more eutrophic sites, we detected the potential for increased metabolic capacity for pollutant degradation in the associated microbiota. We noted greater phylogenetic similarity between more environmentally similar sites, supporting previous evidence that the microbiota of freshwater fish is influenced by site water chemistry. Our findings bring to light microbial taxa and pathways that might play critical roles in the bioremediation of stressful environmental conditions.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 4","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://enviromicro-journals.onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70164","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144832734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Digestive Microbiome Diversity of the Least Killifish, Heterandria formosa, and Its Implications for Host Adaptability to Varying Trophic Levels 最小鳉鱼的消化微生物群多样性及其对不同营养水平寄主适应性的影响

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2025-08-12 DOI: 10.1111/1758-2229.70164

Benjamin D. Pluer, Joseph Travis

{"title":"The Digestive Microbiome Diversity of the Least Killifish, Heterandria formosa, and Its Implications for Host Adaptability to Varying Trophic Levels","authors":"Benjamin D. Pluer, Joseph Travis","doi":"10.1111/1758-2229.70164","DOIUrl":"10.1111/1758-2229.70164","url":null,"abstract":"Symbiotic microbes, in associations with aquatic hosts, aid in the acquisition of nutrients, breakdown xenobiotics, and contribute to immune system function. If associations with microbial communities facilitate host adaptation to different ecosystems, understanding the important ecological factors that act as drivers of differences among conspecific populations' microbiomes can help conservation efforts to promote beneficial interactions between fish and their microbiome for freshwater fish species facing rapid environmental changes. Here we describe the microbial communities in the gut of a freshwater fish, Heterandria formosa, in spring habitats using 16S rRNA sequencing. We quantified microbiota composition and diversity among springs ranging from oligotrophic to near eutrophic to determine the extent to which the microbiota are associated with different environmental conditions. We found higher microbial richness at sites with lower nutrient load stress. At more eutrophic sites, we detected the potential for increased metabolic capacity for pollutant degradation in the associated microbiota. We noted greater phylogenetic similarity between more environmentally similar sites, supporting previous evidence that the microbiota of freshwater fish is influenced by site water chemistry. Our findings bring to light microbial taxa and pathways that might play critical roles in the bioremediation of stressful environmental conditions.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 4","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://enviromicro-journals.onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70164","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144832544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strengthen or Weaken: Evolutionary Directions of Cross-Feeding After Formation 加强或削弱：形成后交叉进食的进化方向

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2025-08-10 DOI: 10.1111/1758-2229.70175

Laipeng Luo, Xiaoli Chen, Bingwen Liu, Yong Nie, Xiao-Lei Wu

{"title":"Strengthen or Weaken: Evolutionary Directions of Cross-Feeding After Formation","authors":"Laipeng Luo, Xiaoli Chen, Bingwen Liu, Yong Nie, Xiao-Lei Wu","doi":"10.1111/1758-2229.70175","DOIUrl":"10.1111/1758-2229.70175","url":null,"abstract":"Interactions between species and the evolution of strains are important biotic factors determining the microbial community dynamics, with these two processes being deeply intertwined. Cross-feeding is a prevailing mutualistic interaction in natural microbial communities in which metabolites secreted by one microbe can be utilised by another. Constructing synthetic microbial consortia based on cross-feeding is a promising strategy for bioremediation and bioproduction. But how to improve the performance and the stability of consortia remains a challenge. This review discusses the features of two opposite evolutionary directions of cross-feeding consortia over time, providing insights into the factors affecting the evolutionary process. While coevolving, cross-feeding may strengthen with stronger metabolic coupling, deeper growth dependence, and/or deeper evolutionary dependence; then the consortia become reinforced. Conversely, unsuitable environmental conditions can lead to the direct collapse of the cross-feeding consortia due to metabolic decoupling, partner extinction, or cheater dominance. The loss of the fitness advantage and the constraints on the evolutionary ability can also lead to the weakening of cross-feeding. Cross-feeding partners can affect the evolution of focal strains from different aspects, such as niche space, selective pressure, horizontal gene transfer, and evolutionary rate. Analysing cross-feeding from an evolutionary perspective will advance our understanding of microbial community dynamics and enable rational designs of efficient and stable synthetic microbial consortia.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 4","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://enviromicro-journals.onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70175","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Ammonia Oxidising Archaeon Nitrosopumilus maritimus Does Not Alter Iodine Oxidation State in Oxic Seawater 氨氧化古菌亚硝基藻对含氧海水中碘的氧化态无影响

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2025-08-10 DOI: 10.1111/1758-2229.70168

Alison L. Webb, Barbora Oudova-Rivera, Martyn Ward, Lucy J. Carpenter, Laura E. Lehtovirta-Morley, Rosie Chance

{"title":"The Ammonia Oxidising Archaeon Nitrosopumilus maritimus Does Not Alter Iodine Oxidation State in Oxic Seawater","authors":"Alison L. Webb, Barbora Oudova-Rivera, Martyn Ward, Lucy J. Carpenter, Laura E. Lehtovirta-Morley, Rosie Chance","doi":"10.1111/1758-2229.70168","DOIUrl":"10.1111/1758-2229.70168","url":null,"abstract":"We investigate the potential for the globally distributed marine ammonia oxidising archaeon (AOA) Nitrosopumilus maritimus to oxidise iodide (I−), with the aim of identifying a key driver of seawater iodate (IO3−) renewal. Batch cultures of N. maritimus grew well in concentrations of 0.1 to 1 mM NH4+ and from 0.0001 to 1 mM I−. There was near 100% conversion of ammonium to nitrite over an 8-day growth period. No loss of I− or production of IO3− was detected in cultures where I− was added, indicating that N. maritimus is unable to drive I− oxidation under the tested conditions. This contrasts with previous observations of I− oxidation by ammonium oxidising bacteria (AOB). We explore whether differences between the metabolism of AOA and AOB could explain their differing actions on I−. N. maritimus cultures grown with the equivalent IO3− concentrations also showed no reduction in [IO3−]. In addition, the growth of the N. maritimus culture was unaffected by inorganic iodine concentrations over 1000 times higher than in ambient seawater, suggesting a resilience to high iodine. These results suggest that AOA might have very little role in inorganic iodine turnover in the global ocean.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 4","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://enviromicro-journals.onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70168","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strengthen or Weaken: Evolutionary Directions of Cross-Feeding After Formation 加强或削弱：形成后交叉进食的进化方向

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2025-08-10 DOI: 10.1111/1758-2229.70175

Laipeng Luo, Xiaoli Chen, Bingwen Liu, Yong Nie, Xiao-Lei Wu

{"title":"Strengthen or Weaken: Evolutionary Directions of Cross-Feeding After Formation","authors":"Laipeng Luo, Xiaoli Chen, Bingwen Liu, Yong Nie, Xiao-Lei Wu","doi":"10.1111/1758-2229.70175","DOIUrl":"10.1111/1758-2229.70175","url":null,"abstract":"Interactions between species and the evolution of strains are important biotic factors determining the microbial community dynamics, with these two processes being deeply intertwined. Cross-feeding is a prevailing mutualistic interaction in natural microbial communities in which metabolites secreted by one microbe can be utilised by another. Constructing synthetic microbial consortia based on cross-feeding is a promising strategy for bioremediation and bioproduction. But how to improve the performance and the stability of consortia remains a challenge. This review discusses the features of two opposite evolutionary directions of cross-feeding consortia over time, providing insights into the factors affecting the evolutionary process. While coevolving, cross-feeding may strengthen with stronger metabolic coupling, deeper growth dependence, and/or deeper evolutionary dependence; then the consortia become reinforced. Conversely, unsuitable environmental conditions can lead to the direct collapse of the cross-feeding consortia due to metabolic decoupling, partner extinction, or cheater dominance. The loss of the fitness advantage and the constraints on the evolutionary ability can also lead to the weakening of cross-feeding. Cross-feeding partners can affect the evolution of focal strains from different aspects, such as niche space, selective pressure, horizontal gene transfer, and evolutionary rate. Analysing cross-feeding from an evolutionary perspective will advance our understanding of microbial community dynamics and enable rational designs of efficient and stable synthetic microbial consortia.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 4","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://enviromicro-journals.onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70175","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Ammonia Oxidising Archaeon Nitrosopumilus maritimus Does Not Alter Iodine Oxidation State in Oxic Seawater 氨氧化古菌亚硝基藻对含氧海水中碘的氧化态无影响

IF 2.7 4区生物学

Environmental Microbiology Reports Pub Date : 2025-08-10 DOI: 10.1111/1758-2229.70168

Alison L. Webb, Barbora Oudova-Rivera, Martyn Ward, Lucy J. Carpenter, Laura E. Lehtovirta-Morley, Rosie Chance

{"title":"The Ammonia Oxidising Archaeon Nitrosopumilus maritimus Does Not Alter Iodine Oxidation State in Oxic Seawater","authors":"Alison L. Webb, Barbora Oudova-Rivera, Martyn Ward, Lucy J. Carpenter, Laura E. Lehtovirta-Morley, Rosie Chance","doi":"10.1111/1758-2229.70168","DOIUrl":"10.1111/1758-2229.70168","url":null,"abstract":"We investigate the potential for the globally distributed marine ammonia oxidising archaeon (AOA) Nitrosopumilus maritimus to oxidise iodide (I−), with the aim of identifying a key driver of seawater iodate (IO3−) renewal. Batch cultures of N. maritimus grew well in concentrations of 0.1 to 1 mM NH4+ and from 0.0001 to 1 mM I−. There was near 100% conversion of ammonium to nitrite over an 8-day growth period. No loss of I− or production of IO3− was detected in cultures where I− was added, indicating that N. maritimus is unable to drive I− oxidation under the tested conditions. This contrasts with previous observations of I− oxidation by ammonium oxidising bacteria (AOB). We explore whether differences between the metabolism of AOA and AOB could explain their differing actions on I−. N. maritimus cultures grown with the equivalent IO3− concentrations also showed no reduction in [IO3−]. In addition, the growth of the N. maritimus culture was unaffected by inorganic iodine concentrations over 1000 times higher than in ambient seawater, suggesting a resilience to high iodine. These results suggest that AOA might have very little role in inorganic iodine turnover in the global ocean.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 4","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://enviromicro-journals.onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70168","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0