دورية أكاديمية
أعرض في EDS

Reduced nitrogenase efficiency dominates response of the globally important nitrogen fixer Trichodesmium to ocean acidification.

التفاصيل البيبلوغرافية
العنوان: Reduced nitrogenase efficiency dominates response of the globally important nitrogen fixer Trichodesmium to ocean acidification.
المؤلفون: Luo YW; State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, 361102, Xiamen, Fujian, China. ywluo@xmu.edu.cn., Shi D; State Key Laboratory of Marine Environmental Science and College of the Environment and Ecology, Xiamen University, 361102, Xiamen, Fujian, China. dshi@xmu.edu.cn., Kranz SA; Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL, 32306, USA., Hopkinson BM; Department of Marine Sciences, University of Georgia, Athens, GA, 30602, USA., Hong H; State Key Laboratory of Marine Environmental Science and College of the Environment and Ecology, Xiamen University, 361102, Xiamen, Fujian, China., Shen R; State Key Laboratory of Marine Environmental Science and College of the Environment and Ecology, Xiamen University, 361102, Xiamen, Fujian, China., Zhang F; State Key Laboratory of Marine Environmental Science and College of the Environment and Ecology, Xiamen University, 361102, Xiamen, Fujian, China.
المصدر: Nature communications [Nat Commun] 2019 Apr 03; Vol. 10 (1), pp. 1521. Date of Electronic Publication: 2019 Apr 03.
نوع المنشور: Journal Article; Research Support, Non-U.S. Gov't
اللغة: English
بيانات الدورية: Publisher: Nature Pub. Group Country of Publication: England NLM ID: 101528555 Publication Model: Electronic Cited Medium: Internet ISSN: 2041-1723 (Electronic) Linking ISSN: 20411723 NLM ISO Abbreviation: Nat Commun Subsets: MEDLINE
أسماء مطبوعة: Original Publication: [London] : Nature Pub. Group
مواضيع طبية MeSH: Nitrogen/*metabolism , Nitrogen Fixation/*physiology , Nitrogenase/*metabolism , Trichodesmium/*metabolism, Carbon Dioxide/metabolism ; Carbon Dioxide/pharmacology ; Computer Simulation ; Energy Metabolism/drug effects ; Ferredoxins/metabolism ; Hydrogen-Ion Concentration ; Iron/metabolism ; Models, Theoretical ; Oceans and Seas ; Seawater/chemistry ; Seawater/microbiology ; Trichodesmium/drug effects ; Trichodesmium/enzymology ; Trichodesmium/growth & development
مستخلص: The response of the prominent marine dinitrogen (N 2 )-fixing cyanobacteria Trichodesmium to ocean acidification (OA) is critical to understanding future oceanic biogeochemical cycles. Recent studies have reported conflicting findings on the effect of OA on growth and N 2 fixation of Trichodesmium. Here, we quantitatively analyzed experimental data on how Trichodesmium reallocated intracellular iron and energy among key cellular processes in response to OA, and integrated the findings to construct an optimality-based cellular model. The model results indicate that Trichodesmium growth rate decreases under OA primarily due to reduced nitrogenase efficiency. The downregulation of the carbon dioxide (CO 2 )-concentrating mechanism under OA has little impact on Trichodesmium, and the energy demand of anti-stress responses to OA has a moderate negative effect. We predict that if anthropogenic CO 2 emissions continue to rise, OA could reduce global N 2 fixation potential of Trichodesmium by 27% in this century, with the largest decrease in iron-limiting regions.
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المشرفين على المادة: 0 (Ferredoxins)
142M471B3J (Carbon Dioxide)
E1UOL152H7 (Iron)
EC 1.18.6.1 (Nitrogenase)
N762921K75 (Nitrogen)
تواريخ الأحداث: Date Created: 20190405 Date Completed: 20190429 Latest Revision: 20231006
رمز التحديث: 20240628
مُعرف محوري في PubMed: PMC6447586
DOI: 10.1038/s41467-019-09554-7
PMID: 30944323
قاعدة البيانات: MEDLINE
الوصف
تدمد:2041-1723
DOI:10.1038/s41467-019-09554-7