Dominance of ammonia-oxidizing archaea community induced by land use change from Masson pine to eucalypt plantation in subtropical China.
A considerable proportion of Masson pine forests have been converted into eucalypt plantations in the last 30 years in Guangdong Province, subtropical China, for economic reasons, which may affect the ammonia-oxidizing archaea (AOA) community and the process of ammonia transformation. In order to determine the effects of forest conversion on AOA community, AOA communities in a Masson pine (Pinus massoniana) plantation and a eucalypt (Eucalyptus urophylla) plantation, which was converted from the Masson pine, were compared. Results showed that the land use change from the Masson pine to the eucalypt plantation decreased soil nutrient levels. A significant decrease of the potential nitrification rates (PNR) was also observed after the forest conversion (p < 5 %, n = 6). AOA were the only ammonia oxidizers in both plantations (no ammonia-oxidizing bacteria were detected). The detected AOA are affiliated with the genera Nitrosotalea and Nitrososphaera. A decrease of AOA abundance and an increase of the diversity were evident with the plantation conversion in the surface layer. AOA amoA gene diversity was negatively correlated with organic C and total N, respectively (p < 0.05, n = 12). AOA amoA gene abundance was negatively correlated with NH4 (+) and available P, respectively (p < 0.05, n = 12). However, AOA abundance was positively correlated with PNR, but not significantly (p < 0.05, n = 6), indicating AOA community change was only a partial reason for the decrease of PNR.
Guangdong Provincial Key Laboratory of Bio-control for the Forest Disease and Pest, Guangdong Academy of Forestry, No. 233, Guangshan 1st Road, Guangzhou, People's Republic of China.|Laboratory of Microbial Ecology and Toxicology, Guangdong Academy of Forestry, No. 233, Guangshan 1st Road, Guangzhou, People's Republic of China.
Fang-Qiu
FQ
Zhang
Laboratory of Microbial Ecology and Toxicology, Guangdong Academy of Forestry, No. 233, Guangshan 1st Road, Guangzhou, People's Republic of China.
Wen
W
Pan
Laboratory of Environmental Microbiology and Toxicology, School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, SAR, People's Republic of China. jdgu@hku.hk.
Ji-Dong
JD
Gu
Laboratory of Microbial Ecology and Toxicology, Guangdong Academy of Forestry, No. 233, Guangshan 1st Road, Guangzhou, People's Republic of China.
Bin
B
Xu
Laboratory of Microbial Ecology and Toxicology, Guangdong Academy of Forestry, No. 233, Guangshan 1st Road, Guangzhou, People's Republic of China.
Wei-Hua
WH
Zhang
Laboratory of Microbial Ecology and Toxicology, Guangdong Academy of Forestry, No. 233, Guangshan 1st Road, Guangzhou, People's Republic of China.
Bao-Zhu
BZ
Zhu
Laboratory of Microbial Ecology and Toxicology, Guangdong Academy of Forestry, No. 233, Guangshan 1st Road, Guangzhou, People's Republic of China.
Yu-Xia
YX
Wang
Guangdong Provincial Key Laboratory of Bio-control for the Forest Disease and Pest, Guangdong Academy of Forestry, No. 233, Guangshan 1st Road, Guangzhou, People's Republic of China. david_hku@qq.com.|Laboratory of Microbial Ecology and Toxicology, Guangdong Academy of Forestry, No. 233, Guangshan 1st Road, Guangzhou, People's Republic of China. david_hku@qq.com.
Yong-Feng
YF
Wang
D000383:Agriculture; D000641:Ammonia / Q000378:metabolism*; D001105:Archaea / Q000235:genetics / Q000378:metabolism*; D044822:Biodiversity; D002681:China; D005052:Eucalyptus; D065928:Forests; D058465:Nitrification; D010084:Oxidation-Reduction; D028223:Pinus; D012987:Soil / Q000737:chemistry; D012988:Soil Microbiology
D012987:Soil; D000641:Ammonia
Acidic soil; Ammonia-oxidizing archaea; Eucalyptus urophylla; Land use change; Pinus massoniana