Environmental Microbiology Reports最新文献_第9页

Bacterial Diversity and Succession in the Presence of Steel and Effects on Corrosion 钢存在下的细菌多样性和演替及其对腐蚀的影响

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2025-06-10 DOI: 10.1111/1758-2229.70119

Liam Nolan, Théo Risser, Rainier Catubig, Abhirami Venugopal, Jess Glasson, Damien L. Callahan, Anthony Somers, M. Leigh Ackland, Agnes Michalczyk

{"title":"Bacterial Diversity and Succession in the Presence of Steel and Effects on Corrosion","authors":"Liam Nolan, Théo Risser, Rainier Catubig, Abhirami Venugopal, Jess Glasson, Damien L. Callahan, Anthony Somers, M. Leigh Ackland, Agnes Michalczyk","doi":"10.1111/1758-2229.70119","DOIUrl":"https://doi.org/10.1111/1758-2229.70119","url":null,"abstract":"Steel corrosion is an extensive problem worldwide, substantially impacting marine infrastructures. In this study, the influence of steel on bacterial succession and corrosion was investigated by culturing marine water samples with and without steel coupons for 14 days. Compared to abiotic controls, oxygen levels were rapidly depleted in biotic cultures. Fe levels increased in controls compared to biotic cultures, potentially due to anoxic conditions and the incorporation of Fe in the biofilm. Proteobacteria dominated the initial cultures, but over 14 days the number of phylogenetic groups decreased overall in abundance. Taxons that increased in abundance included Clostridiaceae, Fusobacteriaceae, Flavobacteriaceae and Prolixibacteraceae, some members of which can utilise Fe. While initially in low abundance, Arcobacteraceae, Pseudoalteromonadaceae, Rhodobacteraceae and Rhizobiaceae numbers increased over time. Sites 1 and 2 cultures displayed localised deep pitting corrosion on coupon surfaces, consistent with microbial action, with an increase in Bacteroidetes, suggesting this phylum facilitates corrosion. In contrast, Site 3 cultures displayed uniform, superficial corrosion, with Clostridiaceae being the dominating family by Day 14, suggesting corrosion inhibition through biofilm formation. By identifying bacteria associated with corrosion, targeted approaches to corrosion reduction may be developed through identifying significant metabolic pathways by transcriptomics and the application of metabolic inhibitors.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70119","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256443","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

A Novel Pathosystem With the Model Plant Arabidopsis thaliana for Defining the Molecular Basis of Taphrina Infections 以拟南芥为模式植物的一种新的病理系统，确定了稻瘟病毒感染的分子基础

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2025-06-10 DOI: 10.1111/1758-2229.70118

Agate Auzane, Margaretta Christita, Kai Wang, Timo Sipilä, Sitaram Rajaraman, Gugan Eswaran, Jasmin Kemppinen, Alejandro De La Fuente, Klaas Bouwmeester, Petri Auvinen, Lars Paulin, Jarkko Salojärvi, Maija Sierla, Mikael Broché, Kirk Overmyer

{"title":"A Novel Pathosystem With the Model Plant Arabidopsis thaliana for Defining the Molecular Basis of Taphrina Infections","authors":"Agate Auzane, Margaretta Christita, Kai Wang, Timo Sipilä, Sitaram Rajaraman, Gugan Eswaran, Jasmin Kemppinen, Alejandro De La Fuente, Klaas Bouwmeester, Petri Auvinen, Lars Paulin, Jarkko Salojärvi, Maija Sierla, Mikael Broché, Kirk Overmyer","doi":"10.1111/1758-2229.70118","DOIUrl":"https://doi.org/10.1111/1758-2229.70118","url":null,"abstract":"Plant-associated yeasts modulate host immunity to promote or prevent disease. Mechanisms of yeast perception by the plant innate immune system remain unknown, with progress hindered by lack of a model system with the model plant Arabidopsis thaliana (Arabidopsis). A yeast strain of Taphrina tormentillae, named M11, was previously isolated from wild Arabidopsis. Taphrina have been found on many non-host plants, and their complex ecology remains understudied. Here, the interaction of M11 with Arabidopsis was characterised. Infection of Arabidopsis with the birch pathogen T. betulina, used as a non-host control, triggered typical defence activation features but did not multiply, demonstrating Arabidopsis had immunity against a non-adapted yeast. M11 triggered attenuated defence activation features, grew in planta, and caused subtle but clear leaf deformation symptoms, demonstrating it is pathogenic. M11 was widely distributed in environmental sequencing data and found on multiple non-host plants, suggesting Taphrina play previously unrecognised ecological roles on multiple plant species. M11 genome features involved in host interaction were analysed, and potential immune stimulatory molecules in chitin-free cell walls were identified. A pilot screen demonstrated the utility of reverse genetics with Arabidopsis and identified that the BAK1 co-receptor is involved in the perception of M11 Taphrina cell walls.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70118","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256449","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

Evolutionary Convergence of Nutritional Symbionts in Ticks 蜱中营养共生体的进化趋同

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2025-06-10 DOI: 10.1111/1758-2229.70120

Noor Fattar, Meriem Louni, Marie Buysse, Anna Maria Floriano, Joanne Bertaux, Anne Cantereau, Ana Rivero, Marjorie Bruley, Karen D. McCoy, Vincent Delafont, Nathalie Boulanger, Fabrice Vavre, Didier Bouchon, Olivier Duron

{"title":"Evolutionary Convergence of Nutritional Symbionts in Ticks","authors":"Noor Fattar, Meriem Louni, Marie Buysse, Anna Maria Floriano, Joanne Bertaux, Anne Cantereau, Ana Rivero, Marjorie Bruley, Karen D. McCoy, Vincent Delafont, Nathalie Boulanger, Fabrice Vavre, Didier Bouchon, Olivier Duron","doi":"10.1111/1758-2229.70120","DOIUrl":"https://doi.org/10.1111/1758-2229.70120","url":null,"abstract":"Symbiosis with bacteria is essential for the survival of animals with an obligate blood-feeding lifestyle. In ticks, two distinct bacterial lineages, Coxiella-like and Francisella-like endosymbionts, have independently evolved into nutritional symbionts, converging on a key biochemical function for the tick's survival and growth: the production of three B vitamins. In this study, we carried out comparative analyses across multiple tick species and characterised remarkable similarities in their tissue localisation, particularly in organs important for nutrient metabolism and maternal transmission to progeny. In these organs, both symbionts colonise similar intracellular niches, residing within membrane-bound, replicative vacuoles that occupy a substantial part of the cytoplasm of tick cells. Despite extensive genomic reduction, both symbionts have retained pathways for the biosynthesis of B vitamins and, in some cases, chorismate, a precursor used for the production of serotonin by ticks. However, differences exist: while Coxiella-like endosymbionts lack the ability to synthesise heme, Francisella-like endosymbionts possess a complete heme biosynthesis pathway and may potentially provide ticks with this essential cofactor. Overall, these phenotypic and genomic characteristics reveal a broad convergence among symbiotic interactions across major tick families, highlighting the essential role of symbiosis in tick nutrition, feeding behaviour, blood intake and subsequently in pathogen transmission.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70120","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255895","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

A Novel Pathosystem With the Model Plant Arabidopsis thaliana for Defining the Molecular Basis of Taphrina Infections 以拟南芥为模式植物的一种新的病理系统，确定了稻瘟病毒感染的分子基础

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2025-06-10 DOI: 10.1111/1758-2229.70118

Agate Auzane, Margaretta Christita, Kai Wang, Timo Sipilä, Sitaram Rajaraman, Gugan Eswaran, Jasmin Kemppinen, Alejandro De La Fuente, Klaas Bouwmeester, Petri Auvinen, Lars Paulin, Jarkko Salojärvi, Maija Sierla, Mikael Broché, Kirk Overmyer

{"title":"A Novel Pathosystem With the Model Plant Arabidopsis thaliana for Defining the Molecular Basis of Taphrina Infections","authors":"Agate Auzane, Margaretta Christita, Kai Wang, Timo Sipilä, Sitaram Rajaraman, Gugan Eswaran, Jasmin Kemppinen, Alejandro De La Fuente, Klaas Bouwmeester, Petri Auvinen, Lars Paulin, Jarkko Salojärvi, Maija Sierla, Mikael Broché, Kirk Overmyer","doi":"10.1111/1758-2229.70118","DOIUrl":"https://doi.org/10.1111/1758-2229.70118","url":null,"abstract":"Plant-associated yeasts modulate host immunity to promote or prevent disease. Mechanisms of yeast perception by the plant innate immune system remain unknown, with progress hindered by lack of a model system with the model plant Arabidopsis thaliana (Arabidopsis). A yeast strain of Taphrina tormentillae, named M11, was previously isolated from wild Arabidopsis. Taphrina have been found on many non-host plants, and their complex ecology remains understudied. Here, the interaction of M11 with Arabidopsis was characterised. Infection of Arabidopsis with the birch pathogen T. betulina, used as a non-host control, triggered typical defence activation features but did not multiply, demonstrating Arabidopsis had immunity against a non-adapted yeast. M11 triggered attenuated defence activation features, grew in planta, and caused subtle but clear leaf deformation symptoms, demonstrating it is pathogenic. M11 was widely distributed in environmental sequencing data and found on multiple non-host plants, suggesting Taphrina play previously unrecognised ecological roles on multiple plant species. M11 genome features involved in host interaction were analysed, and potential immune stimulatory molecules in chitin-free cell walls were identified. A pilot screen demonstrated the utility of reverse genetics with Arabidopsis and identified that the BAK1 co-receptor is involved in the perception of M11 Taphrina cell walls.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70118","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256437","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

Overwintering Does Not Affect Microbiota Diversity in Halyomorpha halys: Implications for Its Ecology and Management 越冬不影响Halyomorpha halys微生物群多样性：对其生态学和管理的启示

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2025-06-10 DOI: 10.1111/1758-2229.70116

Riccardo Piccinno, Giulio Galla, Gerardo Roselli, Mirco Rodeghiero, Valerio Mazzoni, Lloyd Stringer, Heidi Christine Hauffe, Gianfranco Anfora, Omar Rota-Stabelli

{"title":"Overwintering Does Not Affect Microbiota Diversity in Halyomorpha halys: Implications for Its Ecology and Management","authors":"Riccardo Piccinno, Giulio Galla, Gerardo Roselli, Mirco Rodeghiero, Valerio Mazzoni, Lloyd Stringer, Heidi Christine Hauffe, Gianfranco Anfora, Omar Rota-Stabelli","doi":"10.1111/1758-2229.70116","DOIUrl":"https://doi.org/10.1111/1758-2229.70116","url":null,"abstract":"Host-associated microbial communities play an important role in regulating many aspects of insect biology, but changes in this microbiota during diapause and overwintering are still largely unknown. Halyomorpha halys is an invasive agricultural pest characterised by a unique overwintering strategy where individuals aggregate and enter a state of dormancy, making it an excellent model to study the relationship between microbiota and diapause. We investigated the bacterial diversity of wild H. halys specimens before and after dormancy using 16S rRNA gene amplicon-sequencing. We found that microbiota varies between geographically neighbouring sampling locations, but there were no significant differences in microbial diversity or composition between populations sampled before and after diapause, despite stressful overwintering conditions. Such stability may relate to the highly specific taxa that dominate the stinkbug-associated microbial community. In addition, we did not detect any strong association of stink bugs with phytopathogens, but we found that two populations harboured Nosema maddoxi, a microsporidian pathogen of stink bugs. Our results are relevant to the assessment of accidental spillovers of microorganisms in newly invaded areas and to the implementation of the sterile insect technique based on mass trapping, irradiation, shipping and release after diapause of wild individuals.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70116","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144245075","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

Metabolomic and Genomic Analysis of Bioactive Compounds of Phacidium infestans Karsten DSM 5139 Cultivated on Pinus sylvestris Needles 在西林松针上培养的鼠疫杆菌（Phacidium infestans Karsten DSM 5139）生物活性物质的代谢组学和基因组学分析

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2025-06-09 DOI: 10.1111/1758-2229.70084

Chahira Zerouki, Omolara Mofikoya, Taskeen Badar, Marko Mäkinen, Ossi Turunen, Janne Jänis

{"title":"Metabolomic and Genomic Analysis of Bioactive Compounds of Phacidium infestans Karsten DSM 5139 Cultivated on Pinus sylvestris Needles","authors":"Chahira Zerouki, Omolara Mofikoya, Taskeen Badar, Marko Mäkinen, Ossi Turunen, Janne Jänis","doi":"10.1111/1758-2229.70084","DOIUrl":"https://doi.org/10.1111/1758-2229.70084","url":null,"abstract":"This study investigates how Phacidium infestans acquires nutrients on Pinus sylvestris needles, which possess antimicrobial properties. P. infestans was evaluated for its growth and enzyme production on various substrates, alongside genomic and metabolomic analysis. Direct-infusion high-resolution mass spectrometry (DI-HRMS) was performed on methanol extracts obtained from P. infestans cultivated on needles and malt extract media. DI-HRMS analysis identified 21 compounds from the malt extract and 112 from the needle samples. The resin components increased in the needle samples post-cultivation, suggesting terpenoid release from resin ducts due to fungal degradation of plant cell walls. P. infestans fully consumed sugars and antifungal compounds, including taxiresinol and salicylic acid, with control-to-sample ratios (CTR/SA) of 289.76 and 47.24, respectively. Moreover, lariciresinol and pinoresinol were reduced to undetectable levels. The genomic analysis identified 421 secreted proteins, including 128 carbohydrate-active enzymes, 3 cutinases, and 49 lipases that aid host penetration and wax degradation. Several multi-drug efflux pumps and two acyclic terpene utilisation proteins were identified as well. These proteins support the cellular integrity of P. infestans by expelling toxic compounds. Our findings provide valuable insights into the metabolic strategies of P. infestans for nutrient assimilation on pine needles.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70084","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144244334","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

Metabolomic and Genomic Analysis of Bioactive Compounds of Phacidium infestans Karsten DSM 5139 Cultivated on Pinus sylvestris Needles 在西林松针上培养的鼠疫杆菌（Phacidium infestans Karsten DSM 5139）生物活性物质的代谢组学和基因组学分析

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2025-06-09 DOI: 10.1111/1758-2229.70084

Chahira Zerouki, Omolara Mofikoya, Taskeen Badar, Marko Mäkinen, Ossi Turunen, Janne Jänis

{"title":"Metabolomic and Genomic Analysis of Bioactive Compounds of Phacidium infestans Karsten DSM 5139 Cultivated on Pinus sylvestris Needles","authors":"Chahira Zerouki, Omolara Mofikoya, Taskeen Badar, Marko Mäkinen, Ossi Turunen, Janne Jänis","doi":"10.1111/1758-2229.70084","DOIUrl":"https://doi.org/10.1111/1758-2229.70084","url":null,"abstract":"This study investigates how Phacidium infestans acquires nutrients on Pinus sylvestris needles, which possess antimicrobial properties. P. infestans was evaluated for its growth and enzyme production on various substrates, alongside genomic and metabolomic analysis. Direct-infusion high-resolution mass spectrometry (DI-HRMS) was performed on methanol extracts obtained from P. infestans cultivated on needles and malt extract media. DI-HRMS analysis identified 21 compounds from the malt extract and 112 from the needle samples. The resin components increased in the needle samples post-cultivation, suggesting terpenoid release from resin ducts due to fungal degradation of plant cell walls. P. infestans fully consumed sugars and antifungal compounds, including taxiresinol and salicylic acid, with control-to-sample ratios (CTR/SA) of 289.76 and 47.24, respectively. Moreover, lariciresinol and pinoresinol were reduced to undetectable levels. The genomic analysis identified 421 secreted proteins, including 128 carbohydrate-active enzymes, 3 cutinases, and 49 lipases that aid host penetration and wax degradation. Several multi-drug efflux pumps and two acyclic terpene utilisation proteins were identified as well. These proteins support the cellular integrity of P. infestans by expelling toxic compounds. Our findings provide valuable insights into the metabolic strategies of P. infestans for nutrient assimilation on pine needles.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70084","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144244866","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 Characterisation of the Bacterial Microbiota Associating With a Strain of Epichloë Fungal Endophyte of Perennial Ryegrass and the Interaction With Its Paenibacillus Members 多年生黑麦草Epichloë真菌内生菌相关菌群的遗传特征及其与芽孢杆菌成员的相互作用

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2025-06-08 DOI: 10.1111/1758-2229.70113

Daniel A. Bastías, Linda J. Johnson, Sandeep Kumar, Ruy Jáuregui, Emma R. Applegate, Stuart D. Card

{"title":"Genetic Characterisation of the Bacterial Microbiota Associating With a Strain of Epichloë Fungal Endophyte of Perennial Ryegrass and the Interaction With Its Paenibacillus Members","authors":"Daniel A. Bastías, Linda J. Johnson, Sandeep Kumar, Ruy Jáuregui, Emma R. Applegate, Stuart D. Card","doi":"10.1111/1758-2229.70113","DOIUrl":"https://doi.org/10.1111/1758-2229.70113","url":null,"abstract":"Plant-associated fungi can host unique bacterial microbiota to provide multiple benefits to their fungal hosts. Here it was characterised the bacterial microbiota associated with an Epichloë fungal endophyte (strain AR135) isolated from perennial ryegrass (Lolium perenne) via both 16S rRNA gene sequencing and direct microbial isolation and investigated the microbe-microbe interactions between these bacteria and the fungus. The bacterial microbiota of AR135 was dominated by members within the genus Paenibacillus, with 99% of abundance (on average); although bacteria within genera Delftia and Bradyrhizobium were also present. Paenibacillus cells were located on the surface of hyphae of AR135 fungus in vitro on synthetic media and in planta within perennial ryegrass leaves. Two bacterial strains, E100 and E300, identified as Paenibacillus, were isolated from the AR135 mycelium. E300 drastically altered the abundance of both the whole bacterial microbiota (increased by 63%) and E100 (reduced to 0%). None of the variations observed in the abundance of total bacterial microbiota and E100 and E300 were associated with changes in the fungal biomass of Epichloë. The findings show that Epichloë fungal endophytes can host bacterial communities, the structure of which was regulated by key members of the bacterial community.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70113","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144244187","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 Characterisation of the Bacterial Microbiota Associating With a Strain of Epichloë Fungal Endophyte of Perennial Ryegrass and the Interaction With Its Paenibacillus Members 多年生黑麦草Epichloë真菌内生菌相关菌群的遗传特征及其与芽孢杆菌成员的相互作用

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2025-06-08 DOI: 10.1111/1758-2229.70113

Daniel A. Bastías, Linda J. Johnson, Sandeep Kumar, Ruy Jáuregui, Emma R. Applegate, Stuart D. Card

{"title":"Genetic Characterisation of the Bacterial Microbiota Associating With a Strain of Epichloë Fungal Endophyte of Perennial Ryegrass and the Interaction With Its Paenibacillus Members","authors":"Daniel A. Bastías, Linda J. Johnson, Sandeep Kumar, Ruy Jáuregui, Emma R. Applegate, Stuart D. Card","doi":"10.1111/1758-2229.70113","DOIUrl":"https://doi.org/10.1111/1758-2229.70113","url":null,"abstract":"Plant-associated fungi can host unique bacterial microbiota to provide multiple benefits to their fungal hosts. Here it was characterised the bacterial microbiota associated with an Epichloë fungal endophyte (strain AR135) isolated from perennial ryegrass (Lolium perenne) via both 16S rRNA gene sequencing and direct microbial isolation and investigated the microbe-microbe interactions between these bacteria and the fungus. The bacterial microbiota of AR135 was dominated by members within the genus Paenibacillus, with 99% of abundance (on average); although bacteria within genera Delftia and Bradyrhizobium were also present. Paenibacillus cells were located on the surface of hyphae of AR135 fungus in vitro on synthetic media and in planta within perennial ryegrass leaves. Two bacterial strains, E100 and E300, identified as Paenibacillus, were isolated from the AR135 mycelium. E300 drastically altered the abundance of both the whole bacterial microbiota (increased by 63%) and E100 (reduced to 0%). None of the variations observed in the abundance of total bacterial microbiota and E100 and E300 were associated with changes in the fungal biomass of Epichloë. The findings show that Epichloë fungal endophytes can host bacterial communities, the structure of which was regulated by key members of the bacterial community.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70113","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144244127","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

Differential Expression of Core Metabolic Functions in Candidatus Altiarchaeum Inhabiting Distinct Subsurface Ecosystems 不同地下生态系统中候选念珠菌核心代谢功能的差异表达

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2025-06-03 DOI: 10.1111/1758-2229.70096

Sarah P. Esser, Victoria Turzynski, Julia Plewka, Julia Nuy, Carrie J. Moore, Indra Banas, André R. Soares, Janey Lee, Tanja Woyke, Alexander J. Probst

{"title":"Differential Expression of Core Metabolic Functions in Candidatus Altiarchaeum Inhabiting Distinct Subsurface Ecosystems","authors":"Sarah P. Esser, Victoria Turzynski, Julia Plewka, Julia Nuy, Carrie J. Moore, Indra Banas, André R. Soares, Janey Lee, Tanja Woyke, Alexander J. Probst","doi":"10.1111/1758-2229.70096","DOIUrl":"https://doi.org/10.1111/1758-2229.70096","url":null,"abstract":"Candidatus Altiarchaea are widespread across aquatic subsurface ecosystems and possess a highly conserved core genome, yet adaptations of this core genome to different biotic and abiotic factors based on gene expression remain unknown. Here, we investigated the metatranscriptome of two Ca. Altiarchaeum populations that thrive in two substantially different subsurface ecosystems. In Crystal Geyser, a high-CO2 groundwater system in the USA, Ca. Altiarchaeum crystalense co-occurs with the symbiont Ca. Huberiarchaeum crystalense, while in the Muehlbacher sulfidic spring in Germany, an artesian spring high in sulfide concentration, Ca. A. hamiconexum is heavily infected with viruses. We here mapped metatranscriptome reads against their genomes to analyse the in situ expression profile of their core genomes. Out of 537 shared gene clusters, 331 were functionally annotated and 130 differed significantly in expression between the two sites. Main differences were related to genes involved in cell defence like CRISPR-Cas, virus defence, replication, transcription and energy and carbon metabolism. Our results demonstrate that altiarchaeal populations in the subsurface are likely adapted to their environment while influenced by other biological entities that tamper with their core metabolism. We consequently posit that viruses and symbiotic interactions can be major energy sinks for organisms in the deep biosphere.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206430","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