Response of Endophytic Bacterial Diversity in Cirsium arvense to Cadmium Stress
[Objective]To explore the response of different endophytic bacterial communities to cadmium(Cd)stress and their impact on host Cd accumulation.[Method]Taking the endophytic bacteria of C.arvense as the research object,the community structure was reshaped through soil sterilization,and high-throughput 16S rDNA gene sequencing was used to clarify the changes in the community structure of different endo-phytic bacteria of C.arvense under Cd stress and its impact on the enrichment characteristics of C.arvense.[Result]Endophytic reshaping(ST)treatment significantly changed the structure of endophytic bacterial communities and significantly increased their diversity.Under Cd stress,some bacteria that could promote plant growth,such as Sphingomonas and Devosia became dominant groups.The biomass of C.arvense in cad-mium stress treatment was significantly higher than that in the control group,with a significant increase in root and leaf biomass under Cd stress(P＜0.05).The reshaping of endophytic bacteria(ST)significantly increased the cadmium content and accumulation in C.arvense(P＜0.05).[Conclusion]Different endophytic bacterial communities within the C.arvense plant have different responses to Cd stress and affect its ability to accumulate Cd.
万方数据
维普
