干旱区生态环境知识资源中心(Arid): Linking microbial community compositions to cotton nitrogen utilization along soil salinity gradients

Arid

DOI	10.1016/j.fcr.2022.108697
	Linking microbial community compositions to cotton nitrogen utilization along soil salinity gradients
	Heng, Tong; Yang, Lili; Hermansen, Cecilie; de Jonge, Lis Wollesen; Zhang, Zhengyong; Wu, Baojian; Chen, Ji; Zhao, Li; Yu, Jiawen; He, Xinlin
通讯作者	He, XL
来源期刊	FIELD CROPS RESEARCH
ISSN	0378-4290
EISSN	1872-6852
出版年	2022
卷号	288
英文摘要	Accumulating evidence has shown that soil salinization is a global threat to microbial functional diversity and crop growth. However, the effects of microorganisms on crop growth, yield components, and nitrogen (N) uti-lization under salt stress are poorly understood. In this research, 16S rRNA, quantitative polymerase chain re-action (qPCR) sequencing, and 15N isotopic tracer method were used to identify associations between microbial community composition and cotton N utilization across four salinity gradients (control, 0-2 dS m-1; low-salinity, 2-4 dS m-1; mid-salinity, 4-8 dS m-1; and high-salinity, 8-15 dS m-1). These findings indicated that salinity is the primary driving force behind environmental degradation. Furthermore, the results showed that the effect of microbial community diversity on cotton 15N utilization was regulated by soil electrical conductivity. The promotional effect of Proteobacteria on cotton 15N utilization was gradually enhanced with increasing soil salinity, while the relative abundance of Actinomycetes first showed an increasing trend after which it decreased. The present study confirms that Actinobacteria dwelling in arid areas are capable of growing under selective soil salinity gradients. This study highlights the importance of focusing on microbial community diversity for cotton growth and yield, and for the first time to clarifying the differences in cotton N utilization under different soil salinity gradients in arid areas. In addition, the association between edaphic properties and cotton parts (rhi-zospheres, stems, leaves, and fruits) was evaluated more in-depth using the mediating and moderating effects model in the present study. Further investigations are required to ascertain whether salt-tolerant bacterial communities in the rhizosphere can be isolated to promote N utilization by cotton.
英文关键词	Cotton yield Bacterial community Soil salinization 15N isotopic Rhizospheres
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000867383600004
WOS关键词	GROWTH ; YIELD ; WATER
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392585
推荐引用方式 GB/T 7714	Heng, Tong,Yang, Lili,Hermansen, Cecilie,et al. Linking microbial community compositions to cotton nitrogen utilization along soil salinity gradients[J],2022,288.
APA	Heng, Tong.,Yang, Lili.,Hermansen, Cecilie.,de Jonge, Lis Wollesen.,Zhang, Zhengyong.,...&He, Xinlin.(2022).Linking microbial community compositions to cotton nitrogen utilization along soil salinity gradients.FIELD CROPS RESEARCH,288.
MLA	Heng, Tong,et al."Linking microbial community compositions to cotton nitrogen utilization along soil salinity gradients".FIELD CROPS RESEARCH 288(2022).