Aquatic Microbial Ecology最新文献_第6页

The microbiome of the seagrass Halophila ovalis: community structuring from plant parts to regional scales 卵形嗜盐海草的微生物群:从植物部分到区域尺度的群落结构

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/ame01976

B. Yan, G. Rabbani, Nly Lee, Jls Ooi, JN Lee, D. Huang, Bj Wainwright

引用次数: 3

Differences in regulation of planktonic and epilithic biofilm bacterial production in the middle reaches of a temperate river 温带河流中游浮游生物和附石生物膜细菌生产调控的差异

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/AME01968

K. Tsuchiya, A. Kohzu, V. Kuwahara, SiS Matsuzaki, M. Denda, K. Hirabayashi

{"title":"Differences in regulation of planktonic and epilithic biofilm bacterial production in the middle reaches of a temperate river","authors":"K. Tsuchiya, A. Kohzu, V. Kuwahara, SiS Matsuzaki, M. Denda, K. Hirabayashi","doi":"10.3354/AME01968","DOIUrl":"https://doi.org/10.3354/AME01968","url":null,"abstract":"To clarify the governing factors of planktonic and epilithic bacterial production (BP) and to quantify their relative contributions to the carbon cycle, we investigated the seasonal variation and regulatory factors of planktonic and epilithic BP in the middle reaches of the Shinano River, Japan, ecosystem from February 2019 to May 2020. Sampling was conducted at 3 stations: upper stream riffle, upper stream pool, and lower stream riffle, where current velocity, water depth, and bed shear stress were distinct. Planktonic and biofilm BP ranged from 5.5 to 466 mgC m-3 d-1 and 2.9 to 132 mgC m-2 d-1, respectively, showing clear seasonal variation. Biofilm BP was higher in the upper stream riffle than at the other stations, where no spatial variation in planktonic BP was observed. Generalized linear models suggest that BP was primarily regulated by water temperature. Additionally, planktonic BP was significantly correlated with dissolved organic carbon, suggesting carbon limitation. Biofilm BP showed no evidence of resource limitation (nutrients and organic matter), but was significantly explained by current velocity and station. The results suggest that although seasonality is dominant in biofilm BP variation, spatial differences are significant within the seasonal variability. Moreover, current velocity and bottom shear stress related to local geomorphologies such as riffles and pools affect substrate supply rate and biofilm formation processes, regulating biofilm BP variation. This study demonstrated different regulatory factors of planktonic and biofilm BP in the middle reaches of a temperate river.","PeriodicalId":8112,"journal":{"name":"Aquatic Microbial Ecology","volume":"3 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86874457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Unraveling the distribution patterns of bacterioplankton in a mesoscale cyclonic eddy confined in an oxygen-depleted basin 在缺氧盆地中尺度气旋涡中揭示浮游细菌的分布模式

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/ame01975

S. Pajares

引用次数: 2

Microbial ecology of coral-dominated reefs in the Federated States of Micronesia 密克罗尼西亚联邦以珊瑚为主的珊瑚礁微生物生态学

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/AME01961

A. Apprill, H. Holm, A. Santoro, C. Becker, M. Neave, K. Hughen, A. Donà, G. Aeby, T. Work, L. Weber, Sean P. McNally

{"title":"Microbial ecology of coral-dominated reefs in the Federated States of Micronesia","authors":"A. Apprill, H. Holm, A. Santoro, C. Becker, M. Neave, K. Hughen, A. Donà, G. Aeby, T. Work, L. Weber, Sean P. McNally","doi":"10.3354/AME01961","DOIUrl":"https://doi.org/10.3354/AME01961","url":null,"abstract":"Microorganisms are central to the functioning of coral reef ecosystems, but their dynamics are unstudied on most reefs. We examined the microbial ecology of shallow reefs within the Federated States of Micronesia. We surveyed 20 reefs surrounding 7 islands and atolls (Yap, Woleai, Olimarao, Kosrae, Kapingamarangi, Nukuoro, and Pohnpei), spanning 875 053 km2. On the reefs, we found consistently higher coral coverage (mean ± SD = 36.9 ± 22.2%; max 77%) compared to macroalgae coverage (15.2 ± 15.5%; max 58%), and low abundances of fish. Reef waters had low inorganic nutrient concentrations and were dominated by Synechococcus, Prochlorococcus, and SAR11 bacteria. The richness of bacterial and archaeal communities was significantly related to interactions between island/atoll and depth. High coral coverage on reefs was linked to higher relative abundances of Flavobacteriaceae, Leisingera, Owenweeksia, Vibrio, and the OM27 clade, as well as other heterotrophic bacterial groups, consistent with communities residing in waters near corals and within coral mucus. Microbial community structure at reef depth was significantly correlated with geographic distance, suggesting that island biogeography influences reef microbial communities. Reefs at Kosrae Island, which hosted the highest coral abundance and diversity, were unique compared to other locations; seawater from Kosrae reefs had the lowest organic carbon (59.8−67.9 μM), highest organic nitrogen (4.5−5.3 μM), and harbored consistent microbial communities (>85% similar), which were dominated by heterotrophic cells. This study suggests that the reef-water microbial ecology on Micronesian reefs is influenced by the density and diversity of corals as well as other biogeographical features.","PeriodicalId":8112,"journal":{"name":"Aquatic Microbial Ecology","volume":"25 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82598790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Environmental influences shaping microbial communities in low oxygen, highly stratified marine embayment 环境影响在低氧、高度分层的海洋环境中形成微生物群落

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/ame01978

R. Da Silva, Caitlin T. White, J. Bowman, E. Raes, A. Bisset, C. Chapman, L. Bodrossy, D. Ross

引用次数: 7

Non-random patterns of chytrid infections on phytoplankton host cells: mathematical and chemical ecology approaches 浮游植物宿主细胞上壶菌感染的非随机模式:数学和化学生态学方法

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/AME01966

K. Yoneya, T. Miki, S. D. Wyngaert, H. Grossart, M. Kagami

{"title":"Non-random patterns of chytrid infections on phytoplankton host cells: mathematical and chemical ecology approaches","authors":"K. Yoneya, T. Miki, S. D. Wyngaert, H. Grossart, M. Kagami","doi":"10.3354/AME01966","DOIUrl":"https://doi.org/10.3354/AME01966","url":null,"abstract":"Host−parasite interactions between phytoplankton and fungi (chytrids) are key processes in aquatic ecosystems. However, individual-level heterogeneity in these interactions remains unexplored, although its importance in predicting the spread of diseases has been demonstrated in epidemiology. In this study, we experimentally tested whether individual-level heterogeneity could be a good indicator of phytoplankton−chytrid interactions, using a freshwater green alga Staurastrum sp., the diatoms Ulnaria sp. and Fragilaria crotonensis, and chytrid fungi. The number of attached fungi per host cell showed a non-random clumped parasite distribution on Ulnaria sp. and F. crotonensis, but a random Poisson distribution on Staurastrum sp. To explore the potential mechanisms of these patterns, we developed a mathematical model describing sequential encounters between chytrid zoospores and host cells. The statistical fits of the model explained the parasite distributions for Ulnaria sp. and F. crotonensis well, indicating that the clumped parasite distributions may result from an infection rate, increasing with the number of infections that already occurred on each host cell. Simultaneous analysis of volatile organic compounds (VOCs) from uninfected and infected host populations revealed that, among 13 VOCs detected, 6 components characterized the differences in VOC compositions between species and infection status. In particular, the level of beta-ionone, potentially acting against fungal activities, was significantly reduced in the presence of chytrid infection of Staurastrum sp. These VOCs are targets for future studies, which potentially act as chemical signals influencing chytrid zoospores’ behaviors. The combination of mathematical and chemical analyses represents a promising approach to better understand the individual-level processes of phytoplankton−chytrid interactions.","PeriodicalId":8112,"journal":{"name":"Aquatic Microbial Ecology","volume":"76 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78999668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

The microbiology of isoprene cycling in aquatic ecosystems 水生生态系统中异戊二烯循环的微生物学研究

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/AME01972

R. Dawson, AT Crombie, P. Pichon, M. Steinke, TJ McGenity, J. Murrell

{"title":"The microbiology of isoprene cycling in aquatic ecosystems","authors":"R. Dawson, AT Crombie, P. Pichon, M. Steinke, TJ McGenity, J. Murrell","doi":"10.3354/AME01972","DOIUrl":"https://doi.org/10.3354/AME01972","url":null,"abstract":"Isoprene (2-methyl-1,3-butadiene) is emitted in vast quantities (>500 Tg C yr-1). Most isoprene is emitted by trees, but there is still incomplete understanding of the diversity of isoprene sources. The reactivity of isoprene in the atmosphere has potential implications for both global warming and global cooling, with human health implications also arising from isoprene-induced ozone formation in urban areas. Isoprene emissions from terrestrial environments have been studied for many years, but our understanding of aquatic isoprene emissions is less complete. Several abundant phytoplankton taxa produced isoprene in the laboratory, and the relationship between chlorophyll a and isoprene production has been used to estimate emissions from marine environments. The aims of this review are to highlight the role of aquatic environments in the biological cycling of isoprene and to stimulate further study of isoprene metabolism in marine and freshwater environments. From a microbial ecology perspective, the isoprene metabolic gene cluster, first identified in Rhodococcus sp. AD45 (isoGHIJABCDEF) and subsequently found in every genome-sequenced isoprene-degrader, provides the ideal basis for molecular studies on the distribution and diversity of isoprene-degrading communities. Further investigations of isoprene-emitting microbes, such as the influence of environmental factors and geographical location, must also be considered when attempting to constrain estimates of the flux of isoprene in aquatic ecosystems. We also report isoprene emission by the scleractinian coral Acropora horrida and the degradation of isoprene by the same coral holobiont, which highlights the importance of better understanding the cycling of isoprene in marine environments.","PeriodicalId":8112,"journal":{"name":"Aquatic Microbial Ecology","volume":"89 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78382630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Key drivers of microbial abundance, activity, and diversity in karst spring waters across an altitudinal gradient in Slovenia 斯洛文尼亚喀斯特泉水中微生物丰度、活动和多样性的关键驱动因素

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2021-01-01 DOI: 10.3354/AME01956

M. O. Slabe, T. Danevčič, K. Hug, Lucas Fillinger, I. Mandic-Mulec, C. Griebler, A. Brancelj

{"title":"Key drivers of microbial abundance, activity, and diversity in karst spring waters across an altitudinal gradient in Slovenia","authors":"M. O. Slabe, T. Danevčič, K. Hug, Lucas Fillinger, I. Mandic-Mulec, C. Griebler, A. Brancelj","doi":"10.3354/AME01956","DOIUrl":"https://doi.org/10.3354/AME01956","url":null,"abstract":"In aquatic ecosystems, the biomass, activity and composition of microorganisms are determined to a large extent by local and regional environmental conditions. While karst aquifers are an important source for drinking water, the ecology of microbial communities in karst waters has hardly been studied. This study examined the regional variations and seasonal dynamics of microbial communities in pristine karst spring waters of Slovenia (Central Europe). Fifteen springs distributed across 5 eco-regions exhibiting a strong altitudinal gradient were sampled 4 times a year. Evaluation of the microbial communities included quantification of prokaryotic biomass via total cell counts and microbial activity estimated via measurements of electron transport system activity. The taxonomic structure of the bacterial communities was analysed by terminal restriction fragment length polymorphism fingerprinting. Biological measures were complemented by a set of physico-chemical parameters, including dissolved organic carbon, nutrients, major ions, temperature, electrical conductivity, pH, and dissolved oxygen. Bacterial community structure differed significantly with seasons and eco-regions, with the latter causing greater variation. While the overall power of the environmental variable tested was a moderate factor (15%) in explaining the variability in microbial community structure, catchment altitude was a key determinant. Pro karyotic cell density and microbial activity in spring water decreased with an increase in catchment altitude and were significantly positively correlated. For a better understanding of karst ecosystems and the ecosystem service of water purification, future investigation should address karst microbial communities at a higher phylogenetic and functional resolution.","PeriodicalId":8112,"journal":{"name":"Aquatic Microbial Ecology","volume":"15 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75275239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Phosphate diester utilization by marine diazotrophs Trichodesmium erythraeum and Crocosphaera watsonii 海洋重氮营养体赤藓菌和华氏鳄对磷酸二酯的利用

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2020-12-17 DOI: 10.3354/ame01951

T. Yamaguchi, Mitsuhide Sato, N. Gonda, Kazutaka Takahashi, K. Furuya

{"title":"Phosphate diester utilization by marine diazotrophs Trichodesmium erythraeum and Crocosphaera watsonii","authors":"T. Yamaguchi, Mitsuhide Sato, N. Gonda, Kazutaka Takahashi, K. Furuya","doi":"10.3354/ame01951","DOIUrl":"https://doi.org/10.3354/ame01951","url":null,"abstract":"In the phosphate-depleted oligotrophic ocean, microbes utilize various dissolved organic phosphorus (P) compounds as alternative P sources, using enzymes such as alkaline phosphatases. However, knowledge of such P acquisition mechanisms is limited, especially in association with the physiology of nitrogen-fixing organisms, which play a substantial role in marine biogeochemical cycling. We show that nonaxenic clonal cultures of 2 oceanic diazotrophs,Trichodesmium erythraeumandCrocosphaera watsonii, have the ability to utilize phosphate diester as their sole P source, using a model artificial compound—bis-p-nitrophenyl phosphate (bisNPP). Although both diazotroph cultures likely preferred phosphate monoester to diester, the expressed diesterase activity was theoretically sufficient to fulfill their P demands, and they showed significant growth in bisNPP-added media. Interestingly, a distinct difference in their growth trends was observed, with faster onset of growth byC. watsoniiand delayed onset of growth byT. erythraeum. This indicates that theC. watsoniiconsortium can effectively and rapidly assimilatein situdiesters as alternative P sources in the field. Nonetheless, when considering the poor bisNPP utilization reported from other marine phytoplankton taxa, our results indicate that the utilization of particular diester compounds is a notable and advantageous strategy for both diazotroph consortia to alleviate P limitation in the oligotrophic ocean.","PeriodicalId":8112,"journal":{"name":"Aquatic Microbial Ecology","volume":"4 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2020-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79731317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Assessment of viral assemblages in different types of wetland water in northeast China using RAPD-PCR RAPD-PCR技术评价东北不同类型湿地水体中病毒组合

IF 1.4 4区环境科学与生态学

Aquatic Microbial Ecology Pub Date : 2020-12-03 DOI: 10.3354/ame01952

Yonggang Sun, Ju-dong Liu, Qin Yao, Jie-qiong Jin, Xun Liu, Gui-zhou Wang

{"title":"Assessment of viral assemblages in different types of wetland water in northeast China using RAPD-PCR","authors":"Yonggang Sun, Ju-dong Liu, Qin Yao, Jie-qiong Jin, Xun Liu, Gui-zhou Wang","doi":"10.3354/ame01952","DOIUrl":"https://doi.org/10.3354/ame01952","url":null,"abstract":"Viruses are the most abundant and ubiquitous biological entities in various ecosystems, yet few investigations of viral communities in wetlands have been performed. To address this data gap, water samples from 6 wetlands were randomly collected across northeast China; viruses in the water were concentrated by sequential tangential flow filtration, and viral communities were assessed through randomly amplified polymorphic DNA-PCR (RAPD-PCR) with 4 decamer oligonucleotide primers. Principal coordinate analysis and hierarchical clustering analysis of the DNA fingerprints showed that viral community compositions differed among the water samples: communities in the 2 coastal wetlands were more similar to each other than to those in the 4 freshwater wetlands. The Shannon-Weaver index (H) and evenness index (E) of the RAPD-PCR fingerprint also differed among the 6 wetlands. Mantel test revealed that the changes in viral communities in wetland water were most closely related to the water NH4+-N and inorganic C content, followed by total K, P, C and NO3--N. DNA sequence analysis of the excised bands revealed that viruses accounted for ~40% of all sequences. Among the hit viral homologs, the majority belonged to the Microviridae. Moreover, variance partitioning analysis showed that the viral community contributed 24.58% while environmental factors explained 30.56% of the bacterial community variation, indicating that the bacterial community composition was strongly affected by both viral community and water variables. This work provides an initial outline of the viral communities from different types of wetlands in northeast China and improves our understanding of the viral diversity in these ecosystems.","PeriodicalId":8112,"journal":{"name":"Aquatic Microbial Ecology","volume":"14 1","pages":"183-196"},"PeriodicalIF":1.4,"publicationDate":"2020-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76311206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0