土壤学报2026，Vol.63Issue(1)：329-337,9.DOI:10.11766/trxb202503310149
植物生长延缓剂对黄花菜根际土壤微生物群落的影响
Effects of Plant Growth Retardants on Rhizosphere Microbial Community in Hemerocallis citrina
摘要
Abstract
[Objective]Hemerocallis citrina Baroni,an important cash crop in China,has become a pillar industry in Yunzhou District,Datong City,Shanxi Province.Plant growth retardants could effectively delay the flowering period of H.citrina and regulate its growth and development.However,the effect of plant growth retardants on soil microbiota remains unexplored.Thus,this study aimed to clarify the impact of plant growth retardants on soil microbial community structure.[Method]This study was conducted in 2023 in Datong City,Shanxi Province.Plant growth retardants uniconazole(S3307)and paclobutrazol(PP333)were sprayed on H.citrina with three treatments:uniconazole 500 mg·L-1 and paclobutrazol 500 mg·L-1,water was used as the control,and each treatment was repeated three times.The rhizosphere soil was collected from each plot at the full bud stage,and the fine roots,plant residues,stones,and other debris were removed through a 10-mesh sieve.Then the response of the rhizosphere bacterial community to plant growth retardants was analyzed using 16S rRNA and internal transcribed spacer(ITS)amplicon sequencing technology.[Result]The results showed that paclobutrazol and uniconazole treatments had no significant effect on the Shannon index and Chao 1 index of the rhizosphere microbial community.However,both treatments increased the total operational taxonomic units(OTUs)and unique OTUs of the rhizosphere soil bacteria.At the phylum level,paclobutrazol treatment increased the relative abundance of beneficial microorganisms such as Proteobacteria,Actinobacteria,Acidobacteria,and Ascomycota.Under the genus level classification,the relative abundance of Fusarium in soil after paclobutrazol treatment was significantly increased by 9.68%,whereas uniconazole treatment increased the relative abundance of Cyathus by 25.13%compared with the control.[Conclusion]Plant growth retardant treatments have the potential to improve the richness and diversity of rhizosphere bacterial communities as well as change the population structure of soil microorganisms in the rhizosphere of H.citrina.关键词
黄花菜/多效唑和烯效唑/土壤微生物/细菌/真菌Key words
Hemerocallis citrina Baroni/Uniconazole and paclobutrazol/Soil microorganism/Bacteria/Fungi分类
农业科技引用本文复制引用
孟璐,马涛,岳新丽,王慧,李小玉..植物生长延缓剂对黄花菜根际土壤微生物群落的影响[J].土壤学报,2026,63(1):329-337,9.基金项目
山西农业大学博士科研启动项目(2022BQ07)、山西省基础研究计划项目(202303021222068)和山西省博士来晋奖励基金合作项目(SXBYKY2022080)资助 Supported by the Doctoral Program of Shanxi Agricultural University,China(No.2022BQ07),the Basic Research Program of Shanxi Province,China(No.202303021222068),and the Doctoral Work Award Fund Cooperation Project of Shanxi Province,China(No.SXBYKY2022080) （2022BQ07）
