南阳师范学院学报2025，Vol.24Issue(3)：72-81,10.
南水北调中线工程南阳段干渠浮游细菌群落春秋季节特征及其组装过程
Characteristics and assembly processes of Bacterioplankton communities in the main canal of the Middle Route of South-to-North Water Diversion Project of Nanyang City during spring and autumn seasons
摘要
Abstract
The main canal of the South-to-North Water Diversion Project,as the main water conveyance channel,is mainly an open channel.Since the completion and water conveyance of the main canal of the South-to-North Water Diversion Project,the composition,function,and community construction mechanism of the bacterio-plankton community in the main canal have not been clear.This study set up 5 ecological sites in the Nanyang section of the main canal of the South-to-North Water Diversion Project.Samples were collected in the autumn of 2020(October)and spring of 2021(May),and high-throughput sequencing was used to analyze the composi-tion of bacterioplankton communities.Combined with water quality physicochemical properties,the changes and driving factors of bacterioplankton in spring and autumn seasons were analyzed.PICRUSt2 software was used to predict the functions of bacterioplankton communities,molecular ecological network was used to analyze the in-teractions between bacterioplankton,and a neutral model was used to analyze the community assembly process.The results indicate that the community,functions,and interactions of bacterioplankton in the main canal exhibit seasonal variations.Ecological network analysis shows that the total number of nodes,connections,average con-nectivity,and core microbial count in the molecular ecological network of autumn 2020 samples are higher than those of spring 2021 samples.The neutral model explained 80.9%and 61.8%of the community changes of bac-terioplankton in autumn 2020 and spring 2021,respectively,and the random process dominated the construction of bacterioplankton communities in the main canal.This study investigated the composition,function,interac-tion,and assembly of bacterioplankton communities in main canals,as well as their influencing factors,provi-ding assistance for the ecological functions and potential applications of bacterioplankton in main canals.关键词
干渠/浮游细菌/高通量测序/季节变化/群落组装Key words
main canal/Bacterioplankton/high-throughput sequencing/seasonal patterns/community assembly分类
化学化工引用本文复制引用
何建刚,陈彦,李玉英,李百炼,陈兆进..南水北调中线工程南阳段干渠浮游细菌群落春秋季节特征及其组装过程[J].南阳师范学院学报,2025,24(3):72-81,10.基金项目
国家自然科学基金项目(51879130,U2004145) （51879130,U2004145）
河南省高校科技创新人才支持计划资助(23HASTIT018) （23HASTIT018）
河南省科技厅国际科技合作项目(242102521067) （242102521067）
中原科技创新领军人才项目(254000510014) （254000510014）
