干旱区生态环境知识资源中心(Arid): Changes in bacterial community structure and root metabolites in Themeda japonica habitat under slight and strong karst rocky desertification

Arid

DOI	10.1016/j.apsoil.2023.105227
	Changes in bacterial community structure and root metabolites in Themeda japonica habitat under slight and strong karst rocky desertification
	Tang, Ming; Hou, Wenpeng; Gong, Jiyi; Jin, Jie; Malik, Kamran; Wang, Chao; Kong, Xin; Chen, Xianlei; Wang, Li; Chen, Lanlan; Liu, Jie; Wang, Jianfeng; Yi, Yin
通讯作者	Yi, Y
来源期刊	APPLIED SOIL ECOLOGY
ISSN	0929-1393
EISSN	1873-0272
出版年	2024
卷号	195
英文摘要	Microorganisms can quickly respond to vegetation succession, and plants also regulate the structure of microbial community through root exudates or by affecting soil nutrients. Themeda japonica is a dominant plant species in karst rocky desertification (KRD) regions, but it is currently unclear the role of soil bacterial communities, interact with T. japonica during the KRD process. The purpose of this study is to explore the variation of soil metal element content, soil enzyme activity, soil bacterial communities and soil environment factor/root metabolites of T. japonica, and the relationship between soil bacterial communities and root metabolites in different degrees of KRD. Our results showed that the significant changes was found in soil metal element content and soil enzyme activity from slight KRD to strong KRD. Metabolic analysis demonstrated that the strong KRD environment increased the organic acid content of T. japonica roots, decreased the amino acids and sugars content. The specific metabolic pathways of Citrate cycle (TCA cycle), carbon fixation in photosynthetic organisms, glyoxylate and dicarboxylate metabolism and pyruvate metabolism were altered to help T. japonica adapt to the harsh envi-ronment. In addition, there was significant difference in beta diversity among bulk soil, rhizosphere and root endophytic bacterial community. With the aggravation of KRD, the abundance of Proteobacteria was decreased, while the abundance of Actinobacteria was increased. KRD also enhanced positive interactions between bacterial communities, and made the inter species associations of endophytic bacteria more sensitive. Mantel analysis showed that potassium (K), magnesium (Mg), cadmium (Cd) lead (Pb) and invertase (Inv), alkaline phosphatase (Alp), catalase (Cat), and aconitic acid, alanine, fructose, glucose, L-malic acid, palmitic acid, saccharic acid and serine significantly influence bacterial communities in bulk soil and rhizosphere. These results implied that root metabolites and soil characteristics might jointly affect the bacterial community in KRD area during the process of T. japonica in adapting to different rocky desertification.
英文关键词	Karst rocky desertification Themeda japonica Bacterial communities structure and diversity Root metabolite Soil properties
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001150045600001
WOS关键词	SOIL MICROBIAL COMMUNITY ; STRESS ; RHIZOSPHERE ; NETWORK ; PLANTS ; SUCCESSION ; FERTILITY ; DIVERSITY ; CALCIUM ; ENZYMES
WOS类目	Soil Science
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/2XILL650/402884
推荐引用方式 GB/T 7714	Tang, Ming,Hou, Wenpeng,Gong, Jiyi,et al. Changes in bacterial community structure and root metabolites in Themeda japonica habitat under slight and strong karst rocky desertification[J],2024,195.
APA	Tang, Ming.,Hou, Wenpeng.,Gong, Jiyi.,Jin, Jie.,Malik, Kamran.,...&Yi, Yin.(2024).Changes in bacterial community structure and root metabolites in Themeda japonica habitat under slight and strong karst rocky desertification.APPLIED SOIL ECOLOGY,195.
MLA	Tang, Ming,et al."Changes in bacterial community structure and root metabolites in Themeda japonica habitat under slight and strong karst rocky desertification".APPLIED SOIL ECOLOGY 195(2024).