دورية أكاديمية
أعرض في EDS

Uptake of Phytoplankton-Derived Carbon and Cobalamins by Novel Acidobacteria Genera in Microcystis Blooms Inferred from Metagenomic and Metatranscriptomic Evidence.

التفاصيل البيبلوغرافية
العنوان: Uptake of Phytoplankton-Derived Carbon and Cobalamins by Novel Acidobacteria Genera in Microcystis Blooms Inferred from Metagenomic and Metatranscriptomic Evidence.
المؤلفون: Smith DJ; Department of Earth & Environmental Science, University of Michigan, Ann Arbor, Michigan, USA., Kharbush JJ; Department of Earth & Environmental Science, University of Michigan, Ann Arbor, Michigan, USA., Kersten RD; Department of Medicinal Chemistry, University of Michigan, Ann Arbor, Michigan, USA., Dick GJ; Department of Earth & Environmental Science, University of Michigan, Ann Arbor, Michigan, USA.; Cooperative Institute for Great Lakes Research, School of Environment and Sustainability, University of Michigan, Ann Arbor, Michigan, USA.
المصدر: Applied and environmental microbiology [Appl Environ Microbiol] 2022 Jul 26; Vol. 88 (14), pp. e0180321. Date of Electronic Publication: 2022 Jul 05.
نوع المنشور: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.
اللغة: English
بيانات الدورية: Publisher: American Society for Microbiology Country of Publication: United States NLM ID: 7605801 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1098-5336 (Electronic) Linking ISSN: 00992240 NLM ISO Abbreviation: Appl Environ Microbiol Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Washington, American Society for Microbiology.
مواضيع طبية MeSH: Cyanobacteria*/genetics , Microcystis*/genetics , Microcystis*/metabolism, Acidobacteria/metabolism ; Amino Acids/metabolism ; Carbon/metabolism ; Ecosystem ; Hydrogen Peroxide/metabolism ; Lakes/microbiology ; Nitrogen/metabolism ; Phytoplankton/metabolism ; Vitamin B 12/metabolism
مستخلص: Interactions between bacteria and phytoplankton can influence primary production, community composition, and algal bloom development. However, these interactions are poorly described for many consortia, particularly for freshwater bloom-forming cyanobacteria. Here, we assessed the gene content and expression of two uncultivated Acidobacteria from Lake Erie Microcystis blooms. These organisms were targeted because they were previously identified as important catalase producers in Microcystis blooms, suggesting that they protect Microcystis from H 2 O 2 . Metatranscriptomics revealed that both Acidobacteria transcribed genes for uptake of organic compounds that are known cyanobacterial products and exudates, including lactate, glycolate, amino acids, peptides, and cobalamins. Expressed genes for amino acid metabolism and peptide transport and degradation suggest that use of amino acids and peptides by Acidobacteria may regenerate nitrogen for cyanobacteria and other organisms. The Acidobacteria genomes lacked genes for biosynthesis of cobalamins but expressed genes for its transport and remodeling. This indicates that the Acidobacteria obtained cobalamins externally, potentially from Microcystis , which has a complete gene repertoire for pseudocobalamin biosynthesis; expressed them in field samples; and produced pseudocobalamin in axenic culture. Both Acidobacteria were detected in Microcystis blooms worldwide. Together, the data support the hypotheses that uncultured and previously unidentified Acidobacteria taxa exchange metabolites with phytoplankton during harmful cyanobacterial blooms and influence nitrogen available to phytoplankton. Thus, novel Acidobacteria may play a role in cyanobacterial physiology and bloom development. IMPORTANCE Interactions between heterotrophic bacteria and phytoplankton influence competition and successions between phytoplankton taxa, thereby influencing ecosystem-wide processes such as carbon cycling and algal bloom development. The cyanobacterium Microcystis forms harmful blooms in freshwaters worldwide and grows in buoyant colonies that harbor other bacteria in their phycospheres. Bacteria in the phycosphere and in the surrounding community likely influence Microcystis physiology and ecology and thus the development of freshwater harmful cyanobacterial blooms. However, the impacts and mechanisms of interaction between bacteria and Microcystis are not fully understood. This study explores the mechanisms of interaction between Microcystis and uncultured members of its phycosphere in situ with population genome resolution to investigate the cooccurrence of Microcystis and freshwater Acidobacteria in blooms worldwide.
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فهرسة مساهمة: Keywords: Acidobacteria; Microcystis; cyanobacterial blooms; metagenomics; metatranscriptomics; microbial ecology; phycosphere
المشرفين على المادة: 0 (Amino Acids)
7440-44-0 (Carbon)
BBX060AN9V (Hydrogen Peroxide)
N762921K75 (Nitrogen)
P6YC3EG204 (Vitamin B 12)
تواريخ الأحداث: Date Created: 20220721 Date Completed: 20220728 Latest Revision: 20230106
رمز التحديث: 20231215
مُعرف محوري في PubMed: PMC9317899
DOI: 10.1128/aem.01803-21
PMID: 35862730
قاعدة البيانات: MEDLINE
الوصف
تدمد:1098-5336
DOI:10.1128/aem.01803-21