Bacterial succession along a long-term chronosequence of paddy soil in the Yangtze River Delta, China

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

	Bacterial succession along a long-term chronosequence of paddy soil in the Yangtze River Delta, China
	Ding, Long-Jun; Su, Jian-Qiang; Li, Hu; Zhu, Yong-Guan; Cao, Zhi-Hong
刊名	SOIL BIOLOGY & BIOCHEMISTRY
	2017
卷号	104 期号:2018-01-02 页码:59-67
关键词	Bacterial Community Tidal Wetland Reclamation Chronosequence Paddy Soil
英文摘要	Conversion of tidal wetlands into paddy soils is an ancient and prevalent agricultural practice to meet increasing demand of food in the Yangtze River Delta of China, a coastal region where paddy soils originated. However, the impacts of tidal wetland reclamation and continuous rice cultivation at long time scales on soil bacterial communities remains poorly understood. In this study, we investigated temporal dynamics of bacterial communities using 16S rRNA gene pyrosequencing to delineate the patterns and drivers of soil bacterial succession along a long-term (2000 years) chronosequence of paddy field since reclamation from tidal wetlands. The results exhibited orderly changes in soil physicochemical characteristics and bacterial community composition with increasing rice cultivation time, indicating the occurrence of paddy soil development and bacterial succession since reclamation from tidal wetlands. Soil bacterial diversity significantly increased after reclamation of tidal wetlands. Succession of bacterial community composition was primarily linked with significant decrease in the relative abundances of Gammaproteobacteria and Planctomycetes and increase in those of Alphaproteobacteria and Firmicutes. Further analysis showed that long-term rice cultivation led to the enrichment of certain populations such as Rhodospirillaceae (within the class Alphaproteobacteria) and Clostridiaceae (within the phylum Firmicutes), which are potentially beneficial to higher rice yields. Canonical correspondence analysis indicated that at the time scale of millennia, the shift of bacterial community structure was mainly driven by the changes of soil physicochemical properties, especially cation exchange capacity and pH during paddy soil development. Overall, we demonstrate an orderly shift of soil bacterial communities towards higher productivity along with a 2000-year development of paddy soils after the tidal wetland reclamation, which was primarily associated with soil physicochemical alterations with time, and suggest that such chronosequence of paddy soils can serve as a test bed to delineate the relationship between microbial community and soil functions, particularly crop productivity. (C) 2016 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/38958]
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	Ding, Long-Jun,Su, Jian-Qiang,Li, Hu,et al. Bacterial succession along a long-term chronosequence of paddy soil in the Yangtze River Delta, China[J]. SOIL BIOLOGY & BIOCHEMISTRY,2017,104(2018-01-02):59-67.
APA	Ding, Long-Jun,Su, Jian-Qiang,Li, Hu,Zhu, Yong-Guan,&Cao, Zhi-Hong.(2017).Bacterial succession along a long-term chronosequence of paddy soil in the Yangtze River Delta, China.SOIL BIOLOGY & BIOCHEMISTRY,104(2018-01-02),59-67.
MLA	Ding, Long-Jun,et al."Bacterial succession along a long-term chronosequence of paddy soil in the Yangtze River Delta, China".SOIL BIOLOGY & BIOCHEMISTRY 104.2018-01-02(2017):59-67.