气候变化领域集成服务门户(CCPortal): Response of bacterial community characteristics in the rhizosphere soil of Stellera chamaejasme L. to its expansion on the Qinghai-Tibet Plateau

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DOI	10.1002/ldr.4835
	Response of bacterial community characteristics in the rhizosphere soil of Stellera chamaejasme L. to its expansion on the Qinghai-Tibet Plateau
	Hu, Hanying; Sun, Haoran; Wu, Jinghui; Liu, Jiayi; Jin, Hong; Tao, Ke
发表日期	2023
ISSN	1085-3278
EISSN	1099-145X
起始页码	5135
结束页码	5151
卷号	34 期号:16
英文摘要	Qinghai-Tibet Plateau is facing a serious environmental and ecological problem of Meadow degradation. Toxic weed invasion is a typical characteristic of grassland degradation. Soil microbial community composition is sensitive to environmental changes; however, the effects of poisonous weed expansion on soil bacterial communities are unclear. Here, we investigated the effects of Stellera chamaejasme L. expansion on the rhizosphere soil bacterial community structure and function using high-throughput sequencing. The results showed that expansion of Stellera chamaejasme L. changed soil nitrogen(e.g., total nitrogen [TN, -39.02%], available nitrogen [AN, -32.95%]) and other soil nutrients. Redundancy analysis (RDA) and Variance partitioning analysis (VPA) showed that soil nutrients changed, leading to significant changes in the bacterial community structure. The expansion of Stellera chamaejasme L significantly reduced its rhizosphere bacterial alpha diversity, and the beta diversity had significant differences (p < 0.05). Principal coordinates analysis (PCoA) and analysis of similarity (ANOSIM) indicated that the expansion caused significant variations in the rhizosphere bacterial community (R = 0.7037, p < 0.01). The linear discriminant analysis (LDA) effect size (LEfSe) analysis identified 23 biomarkers, most of which were Proteobacteria, indicating that bacteria involved in soil nutrient cycling were better able to survive in the alpine grassland. The Biolog EcoPlate method was used to determine the soil microbial metabolic capacity in different S. chamaejasme expansions. The result showed that heavy expansion had higher carbon source usage ability and microbial diversity index values. Furthermore, it was also found that heavy expansion improved the usage rate of amino acid carbon sources. Tax4Fun prediction analysis further indicated that carbohydrate metabolism, amino acid metabolism, and membrane transport were central metabolic pathways of rhizosphere soil bacteria. Our study found that Stellera chamaejasme L. changed rhizosphere soil nutrient and bacterial community structure during expansion and helped it tolerate harsh conditions by enriching bacterial communities actively involved in carbon and nitrogen metabolism and promoting plant growth. These findings provided evidence to propose effective restoration measures for poisonous grassland degradation.
关键词	16S rRNA bacterial community metabolic pathway rhizosphere bacteria Stellera chamaejasme L
英文关键词	MICROBIAL COMMUNITIES; GRASSLAND DEGRADATION; POISONOUS PLANTS; ALPINE MEADOW; BIOMASS; ECOSYSTEM; INVASION; CARBON; PHOSPHORUS; MANAGEMENT
WOS研究方向	Environmental Sciences ; Soil Science
WOS记录号	WOS:001039648300001
来源期刊	LAND DEGRADATION & DEVELOPMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283337
作者单位	Sichuan University; Sichuan University
推荐引用方式 GB/T 7714	Hu, Hanying,Sun, Haoran,Wu, Jinghui,et al. Response of bacterial community characteristics in the rhizosphere soil of Stellera chamaejasme L. to its expansion on the Qinghai-Tibet Plateau[J],2023,34(16).
APA	Hu, Hanying,Sun, Haoran,Wu, Jinghui,Liu, Jiayi,Jin, Hong,&Tao, Ke.(2023).Response of bacterial community characteristics in the rhizosphere soil of Stellera chamaejasme L. to its expansion on the Qinghai-Tibet Plateau.LAND DEGRADATION & DEVELOPMENT,34(16).
MLA	Hu, Hanying,et al."Response of bacterial community characteristics in the rhizosphere soil of Stellera chamaejasme L. to its expansion on the Qinghai-Tibet Plateau".LAND DEGRADATION & DEVELOPMENT 34.16(2023).