The characterization of arsenic biotransformation microbes in paddy soil after straw biochar and straw amendments

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

	The characterization of arsenic biotransformation microbes in paddy soil after straw biochar and straw amendments
	Yang, Yu-Ping; Tang, Xian-Jin; Zhang, Hong-Mei; Cheng, Wang-Da; Duan, Gui-Lan; Zhu, Yong-Guan
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2020-06-05
卷号	391 页码:1-9
关键词	Arsenic mobility Arsenite methylation Arsenic biotransformation genes (ABGs) Soil-rice system Network analysis
ISSN号	0304-3894
英文摘要	Straw biochar and straw application to paddy soil dramatically altered arsenic (As) biogeochemical cycling in soil-rice system, but it remains unknown how As biotransformation microbes (ABMs) contribute to these processes. In this study, rice pot experiments combining terminal restriction fragment length polymorphism (T-RFLP) analysis and clone library were performed to characterize ABMs. Through linear discriminant analysis (LDA) effect size (LEfSe) and correlation analysis, results revealed that arrA-harbouring iron-reducing bacteria (e.g., Geobacter and Shewanella) and arsC-harbouring Gammaproteobacteria (e.g., fermentative hydrogen-producing and lignin-degrading microorganisms) potentially mediated arsenate [As(V)] reduction under biochar and straw amendments, respectively. Methanogens and sulfate-reducing bacteria (SRB) carrying arsM gene might regulate methylated As concentration in soil-rice system. Network analysis demonstrated that the association among ABMs in rhizosphere was significantly stronger than that in bulk soil. Arsenite [As(III)] methylators carrying arsM gene exhibited much stronger co-occurrence pattern with arsC-harbouring As(V) reducers than with arrA-harbouring As(V) reducers. This study would broaden our insights for the dramatic variation of As biogeochemical cycling in soil-rice system after straw biochar and straw amendments through the activities of ABMs, which could contribute to the safe rice production and high rice yield in As-contaminated fields.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/44478]
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	Yang, Yu-Ping,Tang, Xian-Jin,Zhang, Hong-Mei,et al. The characterization of arsenic biotransformation microbes in paddy soil after straw biochar and straw amendments[J]. JOURNAL OF HAZARDOUS MATERIALS,2020,391:1-9.
APA	Yang, Yu-Ping,Tang, Xian-Jin,Zhang, Hong-Mei,Cheng, Wang-Da,Duan, Gui-Lan,&Zhu, Yong-Guan.(2020).The characterization of arsenic biotransformation microbes in paddy soil after straw biochar and straw amendments.JOURNAL OF HAZARDOUS MATERIALS,391,1-9.
MLA	Yang, Yu-Ping,et al."The characterization of arsenic biotransformation microbes in paddy soil after straw biochar and straw amendments".JOURNAL OF HAZARDOUS MATERIALS 391(2020):1-9.