Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8362472 | Soil Biology and Biochemistry | 2018 | 5 Pages |
Abstract
We investigated the response of aerobic methane oxidation and the associated methanotrophs to salt-stress in a NaCl gradient ranging from 0â¯M (un-amended reference) to 0.6â¯M NaCl (seawater salinity) using a rice paddy soil as a model system. Salt-stress significantly inhibited methanotrophic activity at > 0.3â¯M NaCl; at 0.6â¯M NaCl amendment, methanotrophic activity fully ceased. MiSeq sequencing of the pmoA gene and group-specific qPCR analyses revealed that type Ia methanotroph (Methylobacter) appeared to be favored under salinity up to 0.3â¯M NaCl, increasing in numerical abundance, while the type Ib was adversely affected. This suggests niche differentiation within members of the gammaproteobacterial methanotrophs. Overall, rice paddy soil methanotrophs showed remarkable resistance to salt-stress.
Keywords
Related Topics
Life Sciences
Agricultural and Biological Sciences
Soil Science
Authors
Adrian Ho, Yongliang Mo, Hyo Jung Lee, Leopold Sauheitl, Zhongjun Jia, Marcus A. Horn,