کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8364253 1542601 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Depth-specific distribution and importance of nitrite-dependent anaerobic ammonium and methane-oxidising bacteria in an urban wetland
ترجمه فارسی عنوان
توزیع خاص عمق و اهمیت از باکتری های اکسید کننده بی هوازی وابسته به نیتریت و باکتری های متان اکسید کننده در یک تالاب شهری
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش خاک شناسی
چکیده انگلیسی
Anaerobic ammonium oxidation (anammox) and nitrite-dependent anaerobic methane oxidation (n-damo) are two recently discovered processes in the nitrogen cycle that are catalysed by anammox bacteria and n-damo bacteria, respectively. Here, the depth-specific distribution and importance of anammox bacteria and n-damo bacteria were studied in an urban wetland, Xixi Wetland, Zhejiang Province (China). Anammox bacteria related to Candidatus Brocadia, Candidatus Kuenenia and Candidatus Anammoxoglobus, and n-damo bacteria related to “Candidatus Methylomirabilis oxyfera” were present in the collected soil samples. The abundance of anammox bacteria (2.6-8.6 × 106 copies g−1 dry soil) in the shallow soils (0-10 cm and 20-30 cm) was higher than that (2.5-9.8 × 105 copies g−1 dry soil) in the deep soils, whereas the abundance of n-damo bacteria (0.6-1.3 × 107 copies g−1 dry soil) in the deep soils (50-60 cm and 90-100 cm) was higher than that (3.4-4.5 × 106 copies g−1 dry soil) in the shallow soils. Anammox activity was detected at all depths, and higher potential rates (12.1-21.4 nmol N2 g−1 dry soil d−1) were observed at depths of 0-10 cm and 20-30 cm compared with the rates (3.5-8.7 nmol N2 g−1 dry soil d−1) measured at depths of 50-60 and 90-100 cm. In contrast, n-damo was mainly occurred at depths of 50-60 cm and 90-100 cm with potential rates of 0.7-5.0 nmol CO2 g−1 dry soil d−1. This study suggested the niche segregation of the anammox bacteria and n-damo bacteria in wetland soils, with anammox bacteria being active primarily in deep soils and n-damo bacteria being active primarily in shallow soils.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Biology and Biochemistry - Volume 83, April 2015, Pages 43-51
نویسندگان
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