Abstract:
:Nitrite-dependent anaerobic methane oxidation (N-DAMO), which couples anaerobic methane oxidation and nitrite reduction, is a recently discovered bioprocess coupling microbial nitrogen and carbon cycles. The discovery of this microbial process challenges the traditional knowledge of global methane sinks and nitrogen losses. In this study, the abundance and activity of N-DAMO bacteria were investigated and their contributions to methane sink and nitrogen loss were estimated in different seasons and different partitions of an intertidal zone of the East China Sea. The results showed that N-DAMO bacteria were extensively and continuously present in the intertidal zone, with the number of cells ranging from 5.5 × 104 to 2.8 × 105 copy g-1 soil and the potential activity ranging from 0.52 to 5.7 nmol CO2 g-1 soil day-1, contributing 5.0-36.6% of nitrite- and sulfate-dependent anaerobic methane oxidation in the intertidal zone. The N-DAMO activity and its contribution to the methane consumption were highest in the spring and in the low intertidal zone. These findings showed that the N-DAMO process is an important methane and nitrogen sink in the intertidal zone and varies with the seasons and the partitions of the intertidal zone.
journal_name
Appl Microbiol Biotechnoljournal_title
Applied microbiology and biotechnologyauthors
Wang J,Shen L,He Z,Hu J,Cai Z,Zheng P,Hu Bdoi
10.1007/s00253-017-8521-0subject
Has Abstractpub_date
2017-11-01 00:00:00pages
8007-8014issue
21eissn
0175-7598issn
1432-0614pii
10.1007/s00253-017-8521-0journal_volume
101pub_type
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