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- Title
Characteristics of soil ammonia-oxidation microbial communities in different subtropical forests, China.
- Authors
LI Yong-chun; LIU Bu-rong; GUO Shuai; WU Qi-feng; QIN Hua; WU Jiasen; XU Qiu-fang
- Abstract
To investigate the effects of different forest stands in subtropical China on the communities of soil ammonia-oxidizing microorganisms, we characterized the abundance of ammonia-oxidizing archaea (AOA) and bacteria (AOB), and the community structure of AOA in soils under stands of broad-leaved (BF), Chinese fir (CF), Pinus assoniana (PF) and moso bamboo (MB) forests using real-time quantitative PCR and denaturing gradient gel electrophoresis (DGGE). The results showed that the AOA gene copy numbers (1. 62×106 -1. 88×107 per gram of dry soil) were significantly higher than those of AOB genes (2. 41×105 -4. 36×105 per gram of dry soil). Significantly higher soil AOA abundance was detected in the MB than that in the CF (P<0. 05), and the latter was significantly higher than that in the BF and PF soils (P<0. 05). There were no significant differences in the soil AOB abundance among the four forest stands. As indicated by DGGE pattern, soil AOA species varied among the four forest stands. There was a difference in the soil AOA communities between the CF and MB stands. The AOA demonstrated a competitive advantage over the AOB in the soils under these major subtropical forests. Soil pH, concentrations of soil available potassium and organic carbon as well as the forest type were the main factors that influence the variation of AOA community structure and diversity.
- Subjects
CHINA; OXIDATION of ammonia; MICROORGANISMS; SOILS; FORESTS &; forestry; ARCHAEBACTERIA
- Publication
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2014, Vol 25, Issue 1, p125
- ISSN
1001-9332
- Publication type
Article