Environmental Microbiology Reports最新文献_第9页

Discovery of a new bacterium, Microbacterium betulae sp. nov., in birch wood associated with hypersensitivity pneumonitis in woodworkers 在与木工超敏性肺炎有关的桦木中发现一种新细菌--betulae sp.

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-08-12 DOI: 10.1111/1758-2229.13311

Mariola Paściak, Krzysztof J. Pawlik, Dariusz Martynowski, Łukasz Łaczmański, Jarosław Ciekot, Bogumiła Szponar, Angelina Wójcik-Fatla, Barbara Mackiewicz, Ewelina Farian, Grażyna Cholewa, Alicja Cholewa, Jacek Dutkiewicz

{"title":"Discovery of a new bacterium, Microbacterium betulae sp. nov., in birch wood associated with hypersensitivity pneumonitis in woodworkers","authors":"Mariola Paściak, Krzysztof J. Pawlik, Dariusz Martynowski, Łukasz Łaczmański, Jarosław Ciekot, Bogumiła Szponar, Angelina Wójcik-Fatla, Barbara Mackiewicz, Ewelina Farian, Grażyna Cholewa, Alicja Cholewa, Jacek Dutkiewicz","doi":"10.1111/1758-2229.13311","DOIUrl":"10.1111/1758-2229.13311","url":null,"abstract":"A Gram-positive, aerobic, rod-shaped mesophilic bacterium was isolated from birch wood, referred to as the AB strain. Allergological tests suggest that this strain may cause allergic alveolitis in sawmill workers. Employing a polyphasic taxonomic approach, the AB strain's 16S rRNA gene sequence showed high similarity to Microbacterium barkeri and M. oryzae, with 97.25% and 96.91%, respectively, a finding supported by rpoB and gyrB sequence analysis. Further genome sequence comparison with the closely related M. barkeri type strain indicated a digital DNA–DNA hybridization value of 25.5% and an average nucleotide identity of 82.52%. The AB strain's cell wall peptidoglycan contains ornithine, and its polar lipids comprise diphosphatidylglycerol, phosphatidylglycerol, and unidentified glycolipids. Its major fatty acids include anteiso C15:0, anteiso C17:0, and iso C16:0, while MK-10 is its predominant respiratory quinone. Comprehensive analysis through 16S rRNA, whole-genome sequencing, phenotyping, chemotaxonomy, and MALDI-TOF MS profiling indicates that the AB strain represents a new species within the Microbacterium genus. It has been proposed to name this species Microbacterium betulae sp. nov., with ABT (PCM 3040T = CEST 30706T) designated as the type strain.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"16 4","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.13311","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141970166","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

In search of the pH limit of growth in halo-alkaliphilic cyanobacteria 寻找卤代嗜碱性蓝藻生长的 pH 值极限。

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-08-11 DOI: 10.1111/1758-2229.13323

Lianchun Yi, Ruchita Solanki, Marc Strous

引用次数: 0

Wolbachia confers protection against the entomopathogenic fungus Metarhizium pingshaense in African Aedes aegypti 沃尔巴奇能保护非洲埃及伊蚊免受昆虫病原真菌平沙 Metarhizium 的侵害。

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-08-04 DOI: 10.1111/1758-2229.13316

Etienne Bilgo, Maria Vittoria Mancini, Jacques E. Gnambani, Houeffa Adeline Tatiana Dokpomiwa, Shivan Murdochy, Brian Lovett, Raymond St. Leger, Steven P. Sinkins, Abdoulaye Diabate

{"title":"Wolbachia confers protection against the entomopathogenic fungus Metarhizium pingshaense in African Aedes aegypti","authors":"Etienne Bilgo, Maria Vittoria Mancini, Jacques E. Gnambani, Houeffa Adeline Tatiana Dokpomiwa, Shivan Murdochy, Brian Lovett, Raymond St. Leger, Steven P. Sinkins, Abdoulaye Diabate","doi":"10.1111/1758-2229.13316","DOIUrl":"10.1111/1758-2229.13316","url":null,"abstract":"Symbiotic and pathogenic microorganisms such as bacteria and fungi represent promising alternatives to chemical insecticides to respond to the rapid increase of insecticide resistance and vector-borne disease outbreaks. This study investigated the interaction of two strains of Wolbachia, wAlbB and wAu, with the natural entomopathogenic fungi from Burkina Faso Metarhizium pingshaense, known to be lethal against Anopheles mosquitoes. In addition to showing the potential of Metarhizium against African Aedes aegypti wild-type populations, our study shows that the wAlbB and wAu provide a protective advantage against entomopathogenic fungal infections. Compared to controls, fungal-infected wAu and wAlbB-carrying mosquitoes showed higher longevity, without any significant impact on fecundity and fertility phenotypes. This study provides new insights into the complex multipartite interaction among the mosquito host, the Wolbachia endosymbiont and the entomopathogenic fungus that might be employed to control mosquito populations. Future research should investigate the fitness costs of Wolbachia, as well as its spread and prevalence within mosquito populations. Additionally, evaluating the impact of Wolbachia on interventions involving Metarhizium pingshaense through laboratory and semi-field population studies will provide valuable insights into the effectiveness of this combined approach.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"16 4","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11298244/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141887762","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

Population structure and pathogen interaction of Escherichia coli in freshwater: Implications of land-use for water quality and public health in Aotearoa New Zealand 淡水中大肠埃希氏菌的种群结构和病原体相互作用：土地使用对新西兰奥特亚罗瓦水质和公共卫生的影响。

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-08-02 DOI: 10.1111/1758-2229.13319

Adrian L. Cookson, Meg Devane, Jonathan C. Marshall, Marie Moinet, Amanda Gardner, Rose M. Collis, Lynn Rogers, Patrick J. Biggs, Anthony B. Pita, Angela J. Cornelius, Iain Haysom, David T. S. Hayman, Brent J. Gilpin, Margaret Leonard

{"title":"Population structure and pathogen interaction of Escherichia coli in freshwater: Implications of land-use for water quality and public health in Aotearoa New Zealand","authors":"Adrian L. Cookson, Meg Devane, Jonathan C. Marshall, Marie Moinet, Amanda Gardner, Rose M. Collis, Lynn Rogers, Patrick J. Biggs, Anthony B. Pita, Angela J. Cornelius, Iain Haysom, David T. S. Hayman, Brent J. Gilpin, Margaret Leonard","doi":"10.1111/1758-2229.13319","DOIUrl":"10.1111/1758-2229.13319","url":null,"abstract":"Freshwater samples (n = 199) were obtained from 41 sites with contrasting land-uses (avian, low impact, dairy, urban, sheep and beef, and mixed sheep, beef and dairy) and the E. coli phylotype of 3980 isolates (20 per water sample enrichment) was determined. Eight phylotypes were identified with B1 (48.04%), B2 (14.87%) and A (14.79%) the most abundant. Escherichia marmotae (n = 22), and Escherichia ruysiae (n = 1), were rare (0.68%) suggesting that these environmental strains are unlikely to confound water quality assessments. Phylotypes A and B1 were overrepresented in dairy and urban sites (p < 0.0001), whilst B2 were overrepresented in low impact sites (p < 0.0001). Pathogens ((Salmonella, Campylobacter, Cryptosporidium or Giardia) and the presence of diarrhoeagenic E. coli-associated genes (stx and eae) were detected in 89.9% (179/199) samples, including 80.5% (33/41) of samples with putative non-recent faecal inputs. Quantitative PCR to detect microbial source tracking targets from human, ruminant and avian contamination were concordant with land-use type and E. coli phylotype abundance. This study demonstrated that a potential recreational health risk remains where pathogens occurred in water samples with low E. coli concentration, potential non-recent faecal sources, low impact sites and where human, ruminant and avian faecal sources were absent.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"16 4","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11297283/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141877996","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

Microbial communities reveal niche partitioning across the slope and bottom zones of the challenger deep 微生物群落揭示了挑战者深海斜坡和底部区域的生态位分区。

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-07-31 DOI: 10.1111/1758-2229.13314

Aoran Hu, Weishu Zhao, Jing Wang, Qi Qi, Xiang Xiao, Hongmei Jing

{"title":"Microbial communities reveal niche partitioning across the slope and bottom zones of the challenger deep","authors":"Aoran Hu, Weishu Zhao, Jing Wang, Qi Qi, Xiang Xiao, Hongmei Jing","doi":"10.1111/1758-2229.13314","DOIUrl":"10.1111/1758-2229.13314","url":null,"abstract":"Widespread marine microbiomes exhibit compositional and functional differentiation as a result of adaptation driven by environmental characteristics. We investigated the microbial communities in both seawater and sediments on the slope (7–9 km) and the bottom (9–11 km) of the Challenger Deep of the Mariana Trench to explore community differentiation. Both metagenome-assembled genomes (MAGs) and 16S rRNA amplicon sequence variants (ASVs) showed that the microbial composition in the seawater was similar to that of sediment on the slope, while distinct from that of sediment in the bottom. This scenario suggested a potentially stronger community interaction between seawater and sediment on the slope, which was further confirmed by community assembly and population movement analyses. The metagenomic analysis also indicates a specific stronger potential of nitrate reduction and sulphate assimilation in the bottom seawater, while more versatile nitrogen and sulphur cycling pathways occur on the slope, reflecting functional differentiations among communities in conjunction with environmental features. This work implies that microbial community differentiation occurred in the different hadal niches, and was likely an outcome of microbial adaptation to the extreme hadal trench environment, especially the associated hydrological and geological conditions, which should be considered and measured in situ in future studies.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"16 4","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11291871/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141858353","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

Seasonal and interannual variability of the free-living and particle-associated bacteria of a coastal microbiome 沿岸微生物群中自由生活细菌和颗粒相关细菌的季节和年际变化。

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-07-31 DOI: 10.1111/1758-2229.13299

Isabel Ferrera, Adrià Auladell, Vanessa Balagué, Albert Reñé, Esther Garcés, Ramon Massana, Josep M. Gasol

{"title":"Seasonal and interannual variability of the free-living and particle-associated bacteria of a coastal microbiome","authors":"Isabel Ferrera, Adrià Auladell, Vanessa Balagué, Albert Reñé, Esther Garcés, Ramon Massana, Josep M. Gasol","doi":"10.1111/1758-2229.13299","DOIUrl":"10.1111/1758-2229.13299","url":null,"abstract":"Marine microbial communities differ genetically, metabolically, and ecologically according to their lifestyle, and they may respond differently to environmental changes. In this study, we investigated the seasonal dynamics of bacterial assemblies in the free-living (FL) and particle-associated (PA) fractions across a span of 6 years in the Blanes Bay Microbial Observatory in the Northwestern Mediterranean. Both lifestyles showed marked seasonality. The trends in alpha diversity were similar, with lower values in spring–summer than in autumn-winter. Samples from both fractions were grouped seasonally and the percentage of community variability explained by the measured environmental variables was comparable (32% in FL and 31% in PA). Canonical analyses showed that biotic interactions were determinants of bacterioplankton dynamics and that their relevance varies depending on lifestyles. Time-decay curves confirmed a high degree of predictability in both fractions. Yet, ‘seasonal’ Amplicon Sequence Variants (ASVs) (as defined by Lomb Scargle time series analysis) in the PA communities represented 46% of the total relative abundance while these accounted for 30% in the FL fraction. These results demonstrate that bacteria inhabiting both fractions exhibit marked seasonality, highlighting the importance of accounting for both lifestyles to fully comprehend the dynamics of marine prokaryotic communities.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"16 4","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11289420/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141854313","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

Changes in microbial community structure of bio-fouled polyolefins over a year-long seawater incubation in Hawai'i 在夏威夷长达一年的海水培养过程中，生物污损聚烯烃微生物群落结构的变化。

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-07-29 DOI: 10.1111/1758-2229.13283

Elizabeth Connors, Laurent Lebreton, Jeff S. Bowman, Sarah-Jeanne Royer

{"title":"Changes in microbial community structure of bio-fouled polyolefins over a year-long seawater incubation in Hawai'i","authors":"Elizabeth Connors, Laurent Lebreton, Jeff S. Bowman, Sarah-Jeanne Royer","doi":"10.1111/1758-2229.13283","DOIUrl":"10.1111/1758-2229.13283","url":null,"abstract":"Plastic waste, especially positively buoyant polymers known as polyolefins, are a major component of floating debris in the marine environment. While plastic colonisation by marine microbes is well documented from environmental samples, the succession of marine microbial community structure over longer time scales (> > 1 month) and across different types and shapes of plastic debris is less certain. We analysed 16S rRNA and 18S rRNA amplicon gene sequences from biofilms on polyolefin debris floating in a flow-through seawater tank in Hawai'i to assess differences in microbial succession across the plastic types of polypropylene (PP) and both high-density polyethylene (HDPE) and low-density polyethylene (LDPE) made of different plastic shapes (rod, film and cube) under the same environmental conditions for 1 year. Regardless of type or shape, all plastic debris were dominated by the eukaryotic diatom Nitzschia, and only plastic type was significantly important for bacterial community structure over time (p = 0.005). PE plastics had higher differential abundance when compared to PP for 20 bacterial and eight eukaryotic taxa, including the known plastic degrading bacterial taxon Hyphomonas (p = 0.01). Results from our study provide empirical evidence that plastic type may be more important for bacterial than eukaryotic microbial community succession on polyolefin pollution under similar conditions.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"16 4","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11286543/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141791478","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 preliminary survey of the cellular responses of the black fungus Cryomyces antarcticus to long and short-term dehydration 黑木耳细胞对长期和短期脱水反应的初步调查。

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-07-29 DOI: 10.1111/1758-2229.13309

Cassaro Alessia, D' Alò Federica, Pacelli Claudia, Cavalazzi Barbara, Zucconi Laura, Onofri Silvano

{"title":"A preliminary survey of the cellular responses of the black fungus Cryomyces antarcticus to long and short-term dehydration","authors":"Cassaro Alessia, D' Alò Federica, Pacelli Claudia, Cavalazzi Barbara, Zucconi Laura, Onofri Silvano","doi":"10.1111/1758-2229.13309","DOIUrl":"10.1111/1758-2229.13309","url":null,"abstract":"The McMurdo Dry Valleys in Southern Victoria Land, Antarctica, are known for their extreme aridity, cold, and nutrient-poor conditions. These valleys provide a valuable comparison to environments on Mars. The survival of microorganisms in these areas hinges on their ability to withstand dehydration due to the limited availability of liquid water. Some microorganisms have adapted to survive extended periods of metabolic inactivity and dehydration, a physiological response to the harsh conditions in which they exist. This adaptation is significant for astrobiology studies as it allows for testing the resilience of microorganisms under extraterrestrial conditions, exploring the boundaries and potential for life beyond Earth. In this study, we examined the survivability, metabolic activity, cellular membrane integrity, and ultrastructural damage of Cryomyces antarcticus, a eukaryotic organism used for astrobiological studies, following two dehydration processes. We conducted a fast dehydration process, simulating what happens on the surface of Antarctic rocks under typical environmental conditions, and a slow dehydration process, which is commonly used in astrobiological experiments. Our findings revealed a higher percentage of damaged cells following slow dehydration treatments, confirming that rapid dehydration reflects the adaptability of microorganisms to respond to sudden and drastic changes in the Antarctic environment.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"16 4","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11286975/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141791477","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

Phagotrophy in the nitrogen-fixing haptophyte Braarudosphaera bigelowii 固氮合藻 Braarudosphaera bigelowii 的吞噬作用。

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-07-24 DOI: 10.1111/1758-2229.13312

Esther Wing Kwan Mak, Kendra A. Turk-Kubo, David A. Caron, Rachel C. Harbeitner, Jonathan D. Magasin, Tyler H. Coale, Kyoko Hagino, Yoshihito Takano, Tomohiro Nishimura, Masao Adachi, Jonathan P. Zehr

{"title":"Phagotrophy in the nitrogen-fixing haptophyte Braarudosphaera bigelowii","authors":"Esther Wing Kwan Mak, Kendra A. Turk-Kubo, David A. Caron, Rachel C. Harbeitner, Jonathan D. Magasin, Tyler H. Coale, Kyoko Hagino, Yoshihito Takano, Tomohiro Nishimura, Masao Adachi, Jonathan P. Zehr","doi":"10.1111/1758-2229.13312","DOIUrl":"10.1111/1758-2229.13312","url":null,"abstract":"Biological nitrogen fixation provides fixed nitrogen for microbes living in the oligotrophic open ocean. UCYN-A2, the previously known symbiont of Braarudosphaera bigelowii, now believed to be an early-stage B. bigelowii organelle that exchanges fixed nitrogen for fixed carbon, is globally distributed. Indirect evidence suggested that B. bigelowii might be a mixotrophic (phagotrophic) phototrophic flagellate. The goal of this study was to determine if B. bigelowii can graze on bacteria using several independent approaches. The results showed that B. bigelowii grazed on co-occurring bacteria at a rate of 5–7 cells/h/B. bigelowii and that the overall grazing rate was significantly higher at nighttime than at daytime. Bacterial abundance changes, assessed with 16S rRNA gene amplicon sequencing analysis, may have indicated preferential grazing by B. bigelowii on specific bacterial genotypes. In addition, Lysotracker™ staining of B. bigelowii suggested digestive activity inside B. bigelowii. Carbon and nitrogen fixation measurements revealed that the carbon demand of B. bigelowii could not be fulfilled by photosynthesis alone, implying supplementation by heterotrophy. These independent lines of evidence together revealed that B. bigelowii engages in phagotrophy, which, beyond serving as a supplementary source of carbon and energy, may also facilitate the indirect assimilation of inorganic nutrients.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"16 4","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11269211/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141755979","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

Phaeocystis globosa and diatom blooms promote distinct bacterial communities and associations in a coastal ecosystem 球藻和硅藻的大量繁殖促进了沿海生态系统中不同的细菌群落和关联。

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-07-10 DOI: 10.1111/1758-2229.13313

Dimitra-Ioli Skouroliakou, Elsa Breton, Urania Christaki

{"title":"Phaeocystis globosa and diatom blooms promote distinct bacterial communities and associations in a coastal ecosystem","authors":"Dimitra-Ioli Skouroliakou, Elsa Breton, Urania Christaki","doi":"10.1111/1758-2229.13313","DOIUrl":"10.1111/1758-2229.13313","url":null,"abstract":"Phytoplankton and bacteria form the foundation of marine food webs. While most studies on phytoplankton bloom influence on bacteria dynamics focus on diatom-dominated blooms due to their global ecological significance, it is unclear if similar patterns extend to other species that compete with diatoms like Phaeocystis spp. This study aimed to contribute to the understanding of associations between phytoplankton and bacteria in a temperate ecosystem. For this, we studied the dynamics of phytoplankton and bacteria, combining 16S metabarcoding, microscopy, and flow cytometry over 4 years (282 samples). Phytoplankton and bacterial communities were studied throughout the year, particularly during contrasting phytoplankton blooms dominated by the Haptophyte Phaeocystis globosa or diatoms. We applied extended local similarity analysis (eLSA) to construct networks during blooming and non-blooming periods. Overall, the importance of seasonal and species-specific interactions between phytoplankton and bacteria is highlighted. In winter, mixed diatom communities were interconnected with bacteria, indicating a synergistic degradation of diverse phytoplankton-derived substrates. In spring, despite the intensity variations of P. globosa blooms, the composition of bacterial communities remained consistent over several years, suggesting establishing a stable-state environment for bacterial communities. Specific associations between monospecific diatom blooms and bacteria were evidenced in summer.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"16 4","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.13313","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141578422","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