Time-dependent shifts in populations and activity of bacterial and archaeal ammonia oxidizers in response to liming in acidic soils

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Time-dependent shifts in populations and activity of bacterial and archaeal ammonia oxidizers in response to liming in acidic soils
	He, Ji-Zheng; Zhang, Miao-Miao; Alves, Ricardo J. E.; Zhang, Dan-Dan; Han, Li-Li; Zhang, Li-Mei
刊名	SOIL BIOLOGY & BIOCHEMISTRY
	2017-09-01
卷号	112 期号:27 页码:77-89
关键词	Ammonia-oxidizing Bacteria (Aob) Ammonia-oxidizing Archaea (Aoa) Nitrification n Fertilizers Liming Acidic Soils
英文摘要	During the past decades, extensive nitrogen fertilization and acid deposition have greatly contributed to soil acidification in agroecosystems. Liming, the addition of calcium-and magnesium-rich material to soil, is an effective management strategy used to improve fertility and productivity of agricultural soils degraded by acidification. Nitrification plays a central role in nitrogen (N) availability in agroecosystems and contributes to soil acidification. However, little is known regarding the effects of liming on this process and microbial populations that drive it. Here, we investigated population dynamics and activity of ammonia oxidizers in response to a 2-year liming field trial in acidic soils received long-term fertilization with chemical N fertilizers and short-term lime amendment in microcosm incubations. Our results showed that activity, abundance and population structure of both ammonia-oxidizing archaea (AOA) and bacteria (AOB) were sensitive to liming in fertilized acidic soils. AOB abundance and potential nitrification rates increased in field plots subjected to liming, whereas the opposite was observed for AOA. In microcosm incubations, AOA abundance increased progressively over 60 days, namely under low CaO levels, whereas AOB abundance was greatly stimulated only during the first week under high CaO levels. 13CO2-SIP-DNA experiments further supported that AOA were the most active ammonia oxidizers in fertilized field soils. However, in N-fertilized soils freshly amended with CaO, only autotrophic growth of AOB was observed after seven days, but not after 30 days when growth of AOA was observed. Taken together, our results indicated that both AOA and AOB play a role in nitrification following liming in fertilized acidic soils, likely through selection of better adapted clades of organisms. Although AOA were likely the main drivers of nitrification in these soils in the long-term, liming stimulated AOB activity in the short-term. (C) 2017 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39136]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	He, Ji-Zheng,Zhang, Miao-Miao,Alves, Ricardo J. E.,et al. Time-dependent shifts in populations and activity of bacterial and archaeal ammonia oxidizers in response to liming in acidic soils[J]. SOIL BIOLOGY & BIOCHEMISTRY,2017,112(27):77-89.
APA	He, Ji-Zheng,Zhang, Miao-Miao,Alves, Ricardo J. E.,Zhang, Dan-Dan,Han, Li-Li,&Zhang, Li-Mei.(2017).Time-dependent shifts in populations and activity of bacterial and archaeal ammonia oxidizers in response to liming in acidic soils.SOIL BIOLOGY & BIOCHEMISTRY,112(27),77-89.
MLA	He, Ji-Zheng,et al."Time-dependent shifts in populations and activity of bacterial and archaeal ammonia oxidizers in response to liming in acidic soils".SOIL BIOLOGY & BIOCHEMISTRY 112.27(2017):77-89.