干旱区生态环境知识资源中心(Arid): Dry and wet seasonal variations of the sediment fungal community composition in the semi-arid region of the Dali River, Northwest China

Arid

DOI	10.1007/s11356-023-31042-1
	Dry and wet seasonal variations of the sediment fungal community composition in the semi-arid region of the Dali River, Northwest China
	Chen, Xin; Xu, Guoce; Xiong, Ping; Peng, Jianbo; Fang, Kang; Wan, Shun; Wang, Bin; Gu, Fengyou; Li, Jing; Xiong, Haijing
通讯作者	Xu, GC
来源期刊	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN	0944-1344
EISSN	1614-7499
出版年	2023
卷号	30 期号:59 页码:123694-123709
英文摘要	Microbial communities play an important role in water quality regulation and biogeochemical cycling in freshwater ecosystems. However, there has been a lack of research on the seasonal variation of sediment microorganisms in the sediments of small river basins in typical semi-arid region. In this study, high-throughput DNA sequencing was used to investigate the fungal community and its influencing factors in the sediment of the Dali River in the dry and wet seasons. The results showed that there were obvious seasonal differences in fungal alpha diversity. The diversity and richness of fungi in the dry season were greater than that in the wet season, but the evenness of fungi in the dry season was lower than that in the wet season. In addition, Ascomycota and Basidiomycota were the most important phyla in the Dali River fungal community, but their distributions showed clear seasonal differences. In the dry season, the relative abundance of Ascomycota and Basidiomycota were 12.34-46.42% and 17.59-27.20%, respectively. In the wet season, the relative abundances of these two phyla were 24.33-36.56% and 5.75-12.26%, respectively. PICRUSt2 was used to predict the metabolic function of fungal community in the sediment, and it was found that at the first level, the proportion of biosynthesis in the dry season was higher than that in the wet season. The ecological network structure showed that the fungal community in the wet season was more complex and stable than that in the dry season. The characteristic fungi in the dry season sediment were chytrid fungi in the family Rhizophydiaceae and the order Rhizophydiales, whereas those in the wet season sediment were in the orders Eurotiales and Saccharomycetales. Canonical correspondence analysis (CCA) showed that the physicochemical properties of water and sediment together explained a greater proportion of the dry-season fungal community changes than of the wet-season changes. In the dry season, temperature and ammonia nitrogen in the water were the main factors affecting the change of fungal community, whereas in the wet season, total nitrogen concentration of the water, electrical conductivity, total organic carbon and available phosphorus of the sediment, pH, and temperature were the main factors affecting the changes in fungal community composition. The results of this study enhanced our understanding of microbial communities in semi-arid river ecosystems, and highlight the importance of the management and protection in river ecosystems.
英文关键词	ITS sequence Sediment fungi Alpha diversity Environmental factors Seasonal variation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001126554100008
WOS关键词	FRESH-WATER ; MICROBIAL COMMUNITY ; ECOSYSTEM SERVICES ; AQUATIC FUNGI ; DIVERSITY ; BACTERIAL ; QUALITY ; LAKE ; EUTROPHICATION ; SEAWATER
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396291
推荐引用方式 GB/T 7714	Chen, Xin,Xu, Guoce,Xiong, Ping,et al. Dry and wet seasonal variations of the sediment fungal community composition in the semi-arid region of the Dali River, Northwest China[J],2023,30(59):123694-123709.
APA	Chen, Xin.,Xu, Guoce.,Xiong, Ping.,Peng, Jianbo.,Fang, Kang.,...&Xiong, Haijing.(2023).Dry and wet seasonal variations of the sediment fungal community composition in the semi-arid region of the Dali River, Northwest China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,30(59),123694-123709.
MLA	Chen, Xin,et al."Dry and wet seasonal variations of the sediment fungal community composition in the semi-arid region of the Dali River, Northwest China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 30.59(2023):123694-123709.