生态学杂志2024，Vol.43Issue(11)：3376-3382,7.DOI:10.13292/j.1000-4890.202411.001
轻度和中度镉污染稻田土壤微生物群落结构及其互作网络的差异
Differences of soil microbial community structure and co-occurrence network in rice field with light and moderate levels of cadmium pollution
摘要
Abstract
To elucidate the impacts of cadmium pollution on soil microorganisms,soil samples were collected from lightly and moderately cadmium polluted farmlands in Zhuzhou of Hunan Province.This study analyzed the varia-tions of bacteria,fungi and archaea communities,assessed the effects of soil physicochemical properties on soil mi-crobial community structure,and explored the variation of soil microbial networks by network analysis.The results showed cadmium pollution significantly altered the alpha diversity indices of bacteria and archaea,but did not sig-nificantly affect the alpha diversity indices of fungi.There were significant differences in microbial community struc-ture between lightly and moderately cadmium polluted farmlands.Soil pH,total cadmium(CdT),available cadmi-um(CdA),available phosphorus(AP),and microbial biomass carbon(MBC)significantly affected bacteria and archaea,while fungi were mainly affected by pH,CdT,CdA,nitrate nitrogen(NO3-),and ammonium nitrogen(NH4+).Co-occurrence network analysis revealed that moderate cadmium pollution reduced the number of connec-tions,average node degree,and graph density in the microbial co-occurrence network,indicating that increased cadmium pollution affects interactions between microbes and reduces the complexity of microbial networks.关键词
镉/稻田/高通量测序/群落结构/共现网络分析Key words
cadmium/rice fiield/high-throughput sequencing/microbial community structure/co-occurrence net-work analysis引用本文复制引用
张蓓蓓,王薪琪,李卓晴,杜辉辉,刘孝利,铁柏清,雷鸣..轻度和中度镉污染稻田土壤微生物群落结构及其互作网络的差异[J].生态学杂志,2024,43(11):3376-3382,7.基金项目
国家重点研发计划项目(2022YFD1700101和2018YFD0800700)和长沙市自然科学基金项目(kq2202217)资助. （2022YFD1700101和2018YFD0800700）
