Environmental microbiology最新文献_第8页

The size and diversity of microbes determine carbon use efficiency in soil 微生物的大小和多样性决定土壤中碳的利用效率

IF 5.1 2区生物学

Environmental microbiology Pub Date : 2024-05-10 DOI: 10.1111/1462-2920.16633

Chansotheary Dang, Ember M. Morrissey

{"title":"The size and diversity of microbes determine carbon use efficiency in soil","authors":"Chansotheary Dang, Ember M. Morrissey","doi":"10.1111/1462-2920.16633","DOIUrl":"https://doi.org/10.1111/1462-2920.16633","url":null,"abstract":"Soil is home to a multitude of microorganisms from all three domains of life. These organisms and their interactions are crucial in driving the cycling of soil carbon. One key indicator of this process is Microbial Carbon Use Efficiency (CUE), which shows how microbes influence soil carbon storage through their biomass production. Although CUE varies among different microorganisms, there have been few studies that directly examine how biotic factors influence CUE. One such factor could be body size, which can impact microbial growth rates and interactions in soil, thereby influencing CUE. Despite this, evidence demonstrating a direct causal connection between microbial biodiversity and CUE is still scarce. To address these knowledge gaps, we conducted an experiment where we manipulated microbial body size and biodiversity through size-selective filtering. Our findings show that manipulating the structure of the microbial community can reduce CUE by approximately 65%. When we restricted the maximum body size of the microbial community, we observed a reduction in bacterial diversity and functional potential, which in turn lowered the community's CUE. Interestingly, when we included large body size micro-eukarya in the soil, it shifted the soil carbon cycling, increasing CUE by approximately 50% and the soil carbon to nitrogen ratio by about 25%. Our metrics of microbial diversity and community structure were able to explain 36%–50% of the variation in CUE. This highlights the importance of microbial traits, community structure and trophic interactions in mediating soil carbon cycling.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140907048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modelling dynamics between free-living amoebae and bacteria 自由生活的变形虫和细菌之间的动力学模型。

IF 5.1 2区生物学

Environmental microbiology Pub Date : 2024-05-07 DOI: 10.1111/1462-2920.16623

Marwa Ali, Christopher A. Rice, Andrew W. Byrne, Philip E. Paré, Wendy Beauvais

{"title":"Modelling dynamics between free-living amoebae and bacteria","authors":"Marwa Ali, Christopher A. Rice, Andrew W. Byrne, Philip E. Paré, Wendy Beauvais","doi":"10.1111/1462-2920.16623","DOIUrl":"10.1111/1462-2920.16623","url":null,"abstract":"Free-living amoebae (FLA) serve as hosts for a variety of endosymbionts, which are microorganisms that reside and multiply within the FLA. Some of these endosymbionts pose a pathogenic threat to humans, animals, or both. The symbiotic relationship with FLA not only offers these microorganisms protection but also enhances their survival outside their hosts and assists in their dispersal across diverse habitats, thereby escalating disease transmission. This review is intended to offer an exhaustive overview of the existing mathematical models that have been applied to understand the dynamics of FLA, especially concerning their interactions with bacteria. An extensive literature review was conducted across Google Scholar, PubMed, and Scopus databases to identify mathematical models that describe the dynamics of interactions between FLA and bacteria, as published in peer-reviewed scientific journals. The literature search revealed several FLA–bacteria model systems, including Pseudomonas aeruginosa, Pasteurella multocida, and Legionella spp. Although the published mathematical models account for significant system dynamics such as predator–prey relationships and non-linear growth rates, they generally overlook spatial and temporal heterogeneity in environmental conditions, such as temperature, and population diversity. Future mathematical models will need to incorporate these factors to enhance our understanding of FLA–bacteria dynamics and to provide valuable insights for future risk assessment and disease control measures.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.16623","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140876202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Diverse fates of ancient horizontal gene transfers in extremophilic red algae 嗜极红藻中古老水平基因转移的不同命运

IF 5.1 2区生物学

Environmental microbiology Pub Date : 2024-05-02 DOI: 10.1111/1462-2920.16629

Julia Van Etten, Timothy G. Stephens, Erin Chille, Anna Lipzen, Daniel Peterson, Kerrie Barry, Igor V. Grigoriev, Debashish Bhattacharya

{"title":"Diverse fates of ancient horizontal gene transfers in extremophilic red algae","authors":"Julia Van Etten, Timothy G. Stephens, Erin Chille, Anna Lipzen, Daniel Peterson, Kerrie Barry, Igor V. Grigoriev, Debashish Bhattacharya","doi":"10.1111/1462-2920.16629","DOIUrl":"https://doi.org/10.1111/1462-2920.16629","url":null,"abstract":"Horizontal genetic transfer (HGT) is a common phenomenon in eukaryotic genomes. However, the mechanisms by which HGT-derived genes persist and integrate into other pathways remain unclear. This topic is of significant interest because, over time, the stressors that initially favoured the fixation of HGT may diminish or disappear. Despite this, the foreign genes may continue to exist if they become part of a broader stress response or other pathways. The conventional model suggests that the acquisition of HGT equates to adaptation. However, this model may evolve into more complex interactions between gene products, a concept we refer to as the ‘Integrated HGT Model’ (IHM). To explore this concept further, we studied specialized HGT-derived genes that encode heavy metal detoxification functions. The recruitment of these genes into other pathways could provide clear examples of IHM. In our study, we exposed two anciently diverged species of polyextremophilic red algae from the Galdieria genus to arsenic and mercury stress in laboratory cultures. We then analysed the transcriptome data using differential and coexpression analysis. Our findings revealed that mercury detoxification follows a ‘one gene-one function’ model, resulting in an indivisible response. In contrast, the arsH gene in the arsenite response pathway demonstrated a complex pattern of duplication, divergence and potential neofunctionalization, consistent with the IHM. Our research sheds light on the fate and integration of ancient HGTs, providing a novel perspective on the ecology of extremophiles.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.16629","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140818945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Resting cells of Skeletonema marinoi assimilate organic compounds and respire by dissimilatory nitrate reduction to ammonium in dark, anoxic conditions 在黑暗缺氧条件下，海鞘的静止细胞同化有机化合物，并通过将硝酸盐还原成铵进行异纤毛呼吸

IF 5.1 2区生物学

Environmental microbiology Pub Date : 2024-04-23 DOI: 10.1111/1462-2920.16625

Rickard Stenow, Elizabeth K. Robertson, Olga Kourtchenko, Martin J. Whitehouse, Matthew I. M. Pinder, Giovanna Benvenuto, Mats Töpel, Anna Godhe, Helle Ploug

{"title":"Resting cells of Skeletonema marinoi assimilate organic compounds and respire by dissimilatory nitrate reduction to ammonium in dark, anoxic conditions","authors":"Rickard Stenow, Elizabeth K. Robertson, Olga Kourtchenko, Martin J. Whitehouse, Matthew I. M. Pinder, Giovanna Benvenuto, Mats Töpel, Anna Godhe, Helle Ploug","doi":"10.1111/1462-2920.16625","DOIUrl":"https://doi.org/10.1111/1462-2920.16625","url":null,"abstract":"Diatoms can survive long periods in dark, anoxic sediments by forming resting spores or resting cells. These have been considered dormant until recently when resting cells of Skeletonema marinoi were shown to assimilate nitrate and ammonium from the ambient environment in dark, anoxic conditions. Here, we show that resting cells of S. marinoi can also perform dissimilatory nitrate reduction to ammonium (DNRA), in dark, anoxic conditions. Transmission electron microscope analyses showed that chloroplasts were compacted, and few large mitochondria had visible cristae within resting cells. Using secondary ion mass spectrometry and isotope ratio mass spectrometry combined with stable isotopic tracers, we measured assimilatory and dissimilatory processes carried out by resting cells of S. marinoi under dark, anoxic conditions. Nitrate was both respired by DNRA and assimilated into biomass by resting cells. Cells assimilated nitrogen from urea and carbon from acetate, both of which are sources of dissolved organic matter produced in sediments. Carbon and nitrogen assimilation rates corresponded to turnover rates of cellular carbon and nitrogen content ranging between 469 and 10,000 years. Hence, diatom resting cells can sustain their cells in dark, anoxic sediments by slowly assimilating and respiring substrates from the ambient environment.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.16625","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140639532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Revealing the genetic traits of the foodborne microbial genus hafnia: Implications for the human gut microbiome 揭示食源性微生物哈夫尼亚属的遗传特征：对人类肠道微生物群的影响

IF 5.1 2区生物学

Environmental microbiology Pub Date : 2024-04-22 DOI: 10.1111/1462-2920.16626

Federico Fontana, Giulia Longhi, Elisa Carli, Giulia Alessandri, Leonardo Mancabelli, Gabriele Andrea Lugli, Chiara Tarracchini, Alice Viappiani, Rosaria Anzalone, Francesca Turroni, Christian Milani, Marco Ventura

{"title":"Revealing the genetic traits of the foodborne microbial genus hafnia: Implications for the human gut microbiome","authors":"Federico Fontana, Giulia Longhi, Elisa Carli, Giulia Alessandri, Leonardo Mancabelli, Gabriele Andrea Lugli, Chiara Tarracchini, Alice Viappiani, Rosaria Anzalone, Francesca Turroni, Christian Milani, Marco Ventura","doi":"10.1111/1462-2920.16626","DOIUrl":"https://doi.org/10.1111/1462-2920.16626","url":null,"abstract":"The bacterial genus Hafnia has recently attracted attention due to its complex metabolic features and host-interaction capabilities, which are associated with health benefits, primarily weight loss. However, significant gaps remain in our understanding of the genomic characteristics of this emerging microbial group. In this study, we utilized all available high-quality genomes of Hafnia alvei and Hafnia paralvei to uncover the broad distribution of Hafnia in human and honeybee guts, as well as in dairy products, by analysing 1068 metagenomic datasets. We then investigated the genetic traits related to Hafnia's production of vitamins and short-chain fatty acids (SCFAs) through a comparative genomics analysis that included all dominant bacterial species in the three environments under study. Our findings underscore the extensive metabolic capabilities of Hafnia, particularly in the production of vitamins such as thiamine (B1), nicotinate (B3), pyridoxine (B6), biotin (B7), folate (B9), cobalamin (B12), and menaquinone (K2). Additionally, Hafnia demonstrated a conserved genetic makeup associated with SCFA production, including acetate, propanoate, and butanoate. These metabolic traits were further confirmed using RNAseq analyses of a newly isolated H. paralvei strain T10. Overall, our study illuminates the ecological distribution and genetic attributes of this bacterial genus, which is of increasing scientific and industrial relevance.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140632045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using digital PCR to predict ciliate abundance from ribosomal RNA gene copy numbers 利用数字 PCR 从核糖体 RNA 基因拷贝数预测纤毛虫的丰度

IF 5.1 2区生物学

Environmental microbiology Pub Date : 2024-04-22 DOI: 10.1111/1462-2920.16619

Megan Gross, Micah Dunthorn, Quentin Mauvisseau, Thorsten Stoeck

{"title":"Using digital PCR to predict ciliate abundance from ribosomal RNA gene copy numbers","authors":"Megan Gross, Micah Dunthorn, Quentin Mauvisseau, Thorsten Stoeck","doi":"10.1111/1462-2920.16619","DOIUrl":"https://doi.org/10.1111/1462-2920.16619","url":null,"abstract":"Ciliates play a key role in most ecosystems. Their abundance in natural samples is crucial for answering many ecological questions. Traditional methods of quantifying individual species, which rely on microscopy, are often labour-intensive, time-consuming and can be highly biassed. As a result, we investigated the potential of digital polymerase chain reaction (dPCR) for quantifying ciliates. A significant challenge in this process is the high variation in the copy number of the taxonomic marker gene (ribosomal RNA [rRNA]). We first quantified the rRNA gene copy numbers (GCN) of the model ciliate, Paramecium tetraurelia, during different stages of the cell cycle and growth phases. The per-cell rRNA GCN varied between approximately 11,000 and 130,000, averaging around 50,000 copies per cell. Despite these variations in per-cell rRNA GCN, we found a highly significant correlation between GCN and cell numbers. This is likely due to the coexistence of different cellular stages in an uncontrolled (environmental) ciliate population. Thanks to the high sensitivity of dPCR, we were able to detect the target gene in a sample that contained only a single cell. The dPCR approach presented here is a valuable addition to the molecular toolbox in protistan ecology. It may guide future studies in quantifying and monitoring the abundance of targeted (even rare) ciliates in natural samples.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.16619","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140633735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Defence systems and horizontal gene transfer in bacteria 细菌的防御系统和水平基因转移

IF 5.1 2区生物学

Environmental microbiology Pub Date : 2024-04-21 DOI: 10.1111/1462-2920.16630

Roman Kogay, Yuri I. Wolf, Eugene V. Koonin

{"title":"Defence systems and horizontal gene transfer in bacteria","authors":"Roman Kogay, Yuri I. Wolf, Eugene V. Koonin","doi":"10.1111/1462-2920.16630","DOIUrl":"https://doi.org/10.1111/1462-2920.16630","url":null,"abstract":"Horizontal gene transfer (HGT) is a fundamental process in prokaryotic evolution, contributing significantly to diversification and adaptation. HGT is typically facilitated by mobile genetic elements (MGEs), such as conjugative plasmids and phages, which often impose fitness costs on their hosts. However, a considerable number of bacterial genes are involved in defence mechanisms that limit the propagation of MGEs, suggesting they may actively restrict HGT. In our study, we investigated whether defence systems limit HGT by examining the relationship between the HGT rate and the presence of 73 defence systems across 12 bacterial species. We discovered that only six defence systems, three of which were different CRISPR-Cas subtypes, were associated with a reduced gene gain rate at the species evolution scale. Hosts of these defence systems tend to have a smaller pangenome size and fewer phage-related genes compared to genomes without these systems. This suggests that these defence mechanisms inhibit HGT by limiting prophage integration. We hypothesize that the restriction of HGT by defence systems is species-specific and depends on various ecological and genetic factors, including the burden of MGEs and the fitness effect of HGT in bacterial populations.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.16630","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140632035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Unveiling the culturable and non-culturable actinobacterial diversity in two macroalgae species from the northern Portuguese coast 揭示葡萄牙北部海岸两种大型藻类中可培养和不可培养放线菌的多样性

IF 5.1 2区生物学

Environmental microbiology Pub Date : 2024-04-16 DOI: 10.1111/1462-2920.16620

Mariana Girão, Diogo A. M. Alexandrino, Weiwei Cao, Isabel Costa, Zhongjun Jia, Maria F. Carvalho

{"title":"Unveiling the culturable and non-culturable actinobacterial diversity in two macroalgae species from the northern Portuguese coast","authors":"Mariana Girão, Diogo A. M. Alexandrino, Weiwei Cao, Isabel Costa, Zhongjun Jia, Maria F. Carvalho","doi":"10.1111/1462-2920.16620","DOIUrl":"https://doi.org/10.1111/1462-2920.16620","url":null,"abstract":"Actinomycetota, associated with macroalgae, remains one of the least explored marine niches. The secondary metabolism of Actinomycetota, the primary microbial source of compounds relevant to biotechnology, continues to drive research into the distribution, dynamics, and metabolome of these microorganisms. In this study, we employed a combination of traditional cultivation and metagenomic analysis to investigate the diversity of Actinomycetota in two native macroalgae species from the Portuguese coast. We obtained and taxonomically identified a collection of 380 strains, which were distributed across 12 orders, 15 families, and 25 genera affiliated with the Actinomycetia class, with Streptomyces making up approximately 60% of the composition. Metagenomic results revealed the presence of Actinomycetota in both Chondrus crispus and Codium tomentosum datasets, with relative abundances of 11% and 2%, respectively. This approach identified 12 orders, 16 families, and 17 genera affiliated with Actinomycetota, with minimal overlap with the cultivation results. Acidimicrobiales emerged as the dominant actinobacterial order in both macroalgae, although no strain affiliated with this taxonomic group was successfully isolated. Our findings suggest that macroalgae represent a hotspot for Actinomycetota. The synergistic use of both culture-dependent and independent approaches proved beneficial, enabling the identification and recovery of not only abundant but also rare taxonomic members.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.16620","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140559534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Clonal genomic population structure of Beauveria brongniartii and Beauveria pseudobassiana: Pathogens of the common European cockchafer (Melolontha melolontha L.) Beauveria brongniartii 和 Beauveria pseudobassiana 的克隆基因组种群结构：欧洲普通鸡毛虫（Melolontha melolontha L.）的病原体

IF 5.1 2区生物学

Environmental microbiology Pub Date : 2024-04-15 DOI: 10.1111/1462-2920.16612

Chiara Pedrazzini, Stephen A. Rehner, Hermann Strasser, Niklaus Zemp, Rolf Holderegger, Franco Widmer, Jürg Enkerli

{"title":"Clonal genomic population structure of Beauveria brongniartii and Beauveria pseudobassiana: Pathogens of the common European cockchafer (Melolontha melolontha L.)","authors":"Chiara Pedrazzini, Stephen A. Rehner, Hermann Strasser, Niklaus Zemp, Rolf Holderegger, Franco Widmer, Jürg Enkerli","doi":"10.1111/1462-2920.16612","DOIUrl":"https://doi.org/10.1111/1462-2920.16612","url":null,"abstract":"Beauveria brongniartii is a fungal pathogen that infects the beetle Melolontha melolontha, a significant agricultural pest in Europe. While research has primarily focused on the use of B. brongniartii for controlling M. melolontha, the genomic structure of the B. brongniartii population remains unknown. This includes whether its structure is influenced by its interaction with M. melolontha, the timing of beetle-swarming flights, geographical factors, or reproductive mode. To address this, we analysed genome-wide SNPs to infer the population genomics of Beauveria spp., which were isolated from infected M. melolontha adults in an Alpine region. Surprisingly, only one-third of the isolates were identified as B. brongniartii, while two-thirds were distributed among cryptic taxa within B. pseudobassiana, a fungal species not previously recognized as a pathogen of M. melolontha. Given the prevalence of B. pseudobassiana, we conducted analyses on both species. We found no spatial or temporal genomic patterns within either species and no correlation with the population structure of M. melolontha, suggesting that the dispersal of the fungi is independent of the beetle. Both species exhibited clonal population structures, with B. brongniartii fixed for one mating type and B. pseudobassiana displaying both mating types. This implies that factors other than mating compatibility limit sexual reproduction. We conclude that the population genomic structure of Beauveria spp. is primarily influenced by predominant asexual reproduction and dispersal.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.16612","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140556226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Microorganisms uniquely capture and predict stony coral tissue loss disease and hurricane disturbance impacts on US Virgin Island reefs 微生物独特捕捉和预测美属维尔京群岛珊瑚礁石珊瑚组织损失疾病和飓风干扰的影响

IF 5.1 2区生物学

Environmental microbiology Pub Date : 2024-04-04 DOI: 10.1111/1462-2920.16610

Cynthia C. Becker, Laura Weber, Joel K. Llopiz, T. Aran Mooney, Amy Apprill

{"title":"Microorganisms uniquely capture and predict stony coral tissue loss disease and hurricane disturbance impacts on US Virgin Island reefs","authors":"Cynthia C. Becker, Laura Weber, Joel K. Llopiz, T. Aran Mooney, Amy Apprill","doi":"10.1111/1462-2920.16610","DOIUrl":"https://doi.org/10.1111/1462-2920.16610","url":null,"abstract":"Coral reef ecosystems are now commonly affected by major climate and disease disturbances. Disturbance impacts are typically recorded using reef benthic cover, but this may be less reflective of other ecosystem processes. To explore the potential for reef water-based disturbance indicators, we conducted a 7-year time series on US Virgin Island reefs where we examined benthic cover and reef water nutrients and microorganisms from 2016 to 2022, which included two major disturbances: hurricanes Irma and Maria in 2017 and the stony coral tissue loss disease outbreak starting in 2020. The disease outbreak coincided with the largest changes in the benthic habitat, with increases in the percent cover of turf algae and Ramicrusta, an invasive alga. While sampling timepoint contributed most to changes in reef water nutrient composition and microbial community beta diversity, both disturbances led to increases in ammonium concentration, a mechanism likely contributing to observed microbial community shifts. We identified 10 microbial taxa that were sensitive and predictive of increasing ammonium concentration. This included the decline of the oligotrophic and photoautotrophic Prochlorococcus and the enrichment of heterotrophic taxa. As disturbances impact reefs, the changing nutrient and microbial regimes may foster a type of microbialization, a process that hastens reef degradation.","PeriodicalId":11898,"journal":{"name":"Environmental microbiology","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1462-2920.16610","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140348564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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