烟草青枯病发生与根际细菌群落结构特征关联分析

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引用格式：，等.烟草青枯病发生与根际细菌群落结构特征关联分析[J].湖南农业科学，2025（5）：54-62

DOI：10.16498/j.cnki.hnnykx.2025.005.011

中图分类号：Q939.96 文献标识码：A 文章编号：1006-060X（2025）05-0054-09

Abstract：Thissdyimstoinvestigateteasociationbetweentobaccobacterialwiltseverityndrzosphremicrobialcounity structure.Tobacco plants with different disease indexes wereused as materials，and high-throughput sequencing was performed torevealtherhizosphere microbialcommunitystructure.Theresultsshowedthat increase intheseverityof tobacco bacterialwilt mildlyaffectedthebacterialphylaandgenerabutsignificantlyaffectedtheabundanceofvarious groupsofbacteria.Atthe phylum level，thediseaseseverityhadthe mostsignificantefectsonActinobacteriaandFmicutes，decreasingtheirrelativeabundnce by 16.04% and 12.68% ，respectively，while increasing the abundance of Bacteroidetes by 20.41% .At the genus level， the abundance of Burkholderceeatofccilo severityof thediseaseenhanced.Theresultsofalphaandbeta diversityanalysesshowed thattheincidenceoftobacco bacterial wilt increased the number and communitystructure diversity of rhizosphere bacteria.

Keywords：tobacco bacterial wilt; rhizosphere bacterial diversity; community characteristics

烟草青枯病是由青枯雷尔氏菌（Ralstoniasolanacearum）引起的一种毁灭性土传细菌病害，给我国烟叶生产造成了极大的经济损失[1-2]。（剩余10393字）