Increased microbial functional diversity under long-term organic and integrated fertilization in a paddy soil

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	Increased microbial functional diversity under long-term organic and integrated fertilization in a paddy soil
	Wei, Wen-Xue; Ding, Long-Jun; Su, Jian-Qiang; Sun, Guo-Xin; Wu, Jin-Shui
刊名	APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
	2018-02-01
卷号	102 期号:4 页码:1969-1982
关键词	Fertilization Microbial community Functional gene structure Rice yield Paddy soil
ISSN号	0175-7598
文献子类	Article
英文摘要	Microbes play key roles in diverse biogeochemical processes including nutrient cycling. However, responses of soil microbial community and functional genes to long-term integrated fertilization (chemical combined with organic fertilization) remain unclear. Here, we used pyrosequencing and a microarray-based GeoChip to explore the shifts of microbial community and functional genes in a paddy soil which received over 21-year fertilization with various regimes, including control (no fertilizer), rice straw (R), rice straw plus chemical fertilizer nitrogen (NR), N and phosphorus (NPR), NP and potassium (NPKR), and reduced rice straw plus reduced NPK (L-NPKR). Significant shifts of the overall soil bacterial composition only occurred in the NPKR and L-NPKR treatments, with enrichment of certain groups including Bradyrhizobiaceae and Rhodospirillaceae families that benefit higher productivity. All fertilization treatments significantly altered the soil microbial functional structure with increased diversity and abundances of genes for carbon and nitrogen cycling, in which NPKR and L-NPKR exhibited the strongest effect, while R exhibited the least. Functional gene structure and abundance were significantly correlated with corresponding soil enzymatic activities and rice yield, respectively, suggesting that the structural shift of the microbial functional community under fertilization might promote soil nutrient turnover and thereby affect yield. Overall, this study indicates that the combined application of rice straw and balanced chemical fertilizers was more pronounced in shifting the bacterial composition and improving the functional diversity toward higher productivity, providing a microbial point of view on applying a cost-effective integrated fertilization regime with rice straw plus reduced chemical fertilizers for sustainable nutrient management.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/40581]
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	Wei, Wen-Xue,Ding, Long-Jun,Su, Jian-Qiang,et al. Increased microbial functional diversity under long-term organic and integrated fertilization in a paddy soil[J]. APPLIED MICROBIOLOGY AND BIOTECHNOLOGY,2018,102(4):1969-1982.
APA	Wei, Wen-Xue,Ding, Long-Jun,Su, Jian-Qiang,Sun, Guo-Xin,&Wu, Jin-Shui.(2018).Increased microbial functional diversity under long-term organic and integrated fertilization in a paddy soil.APPLIED MICROBIOLOGY AND BIOTECHNOLOGY,102(4),1969-1982.
MLA	Wei, Wen-Xue,et al."Increased microbial functional diversity under long-term organic and integrated fertilization in a paddy soil".APPLIED MICROBIOLOGY AND BIOTECHNOLOGY 102.4(2018):1969-1982.