热带作物学报2025，Vol.46Issue(3)：754-763,10.DOI:10.3969/j.issn.1000-2561.2025.03.023
盐胁迫对不同品种水稻根际土壤细菌多样性与结构的影响
Effects of Salt Stress on Bacteria Diversity and Structure of Rhizosphere Soil in Different Rice Varieties
摘要
Abstract
Salt is a main factor limiting the utilization of saline land in coastal beach.Rice is the preferred food crop for the utilization of salinized land,and some rhizosphere microorganisms can improve the salt resistance of rice.In order to screen suitable rice varieties planted in salinized land,different rice varieties were selected to cultivate under NaCl stress during the whole growth period,and the diversity and structure of bacterial communities in rhizosphere soil were measured and analyzed by Illumina Miseq sequencing technology.The bacterial community diversity in the rhizosphere soil,the species richness of varieties B3 and B6 were significant higher than those of variety B1 in 0.6%NaCl treat-ments.The community structure,the dominant bacterial phyla were Chloroflexi,Proteobacteria and Actinobacteria with relative abundance more than 10%of three varieties under different concentrations of NaCl treatments.There were dif-ferences in the bacterial community structure of rhizosphere soil,and the number and types of enriched species were also different in different rice varieties.Variety B6 enriched fourteen bacterial taxa branches under 0.6%NaCl treatments,such as Acidobacteriae,Nostocaceae Vicinamibacterales,Thermomicrobiales,KD4-96,etc.Therefore,B6 planted in salinized land of coastal mudflat is beneficial to the formation of dominant bacterial community in rhizosphere soil.关键词
水稻/盐胁迫/根际土壤/细菌群落/16S rRNAKey words
Oryza sativa L./salt stress/rhizosphere soil/bacterial community/16S rRNA分类
农业科技引用本文复制引用
周玉杰,贺治洲,胡伟,林秋云,林越辉,龙开意,谢振宇..盐胁迫对不同品种水稻根际土壤细菌多样性与结构的影响[J].热带作物学报,2025,46(3):754-763,10.基金项目
海南省自然科学基金项目(No.323RC533,No.320RC727) （No.323RC533,No.320RC727）
海南省水稻产业技术体系"种质资源创制与品种选育岗"(No.HNARS-RICE). （No.HNARS-RICE）
