首页|Defensive alteration of root exudate composition by grafting Prunus sp.onto resistant rootstock contributes to reducing crown gall disease
Defensive alteration of root exudate composition by grafting Prunus sp.onto resistant rootstock contributes to reducing crown gall disease
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
Grafting is a traditional and significant strategy to suppress soil-borne diseases,such as the crown gall disease caused by tumorigenic Agrobacterium and Rhizobium.Root exudates and the rhizosphere microbiome play critical roles in controlling crown gall disease,but their roles in suppressing crown gall disease in grafted plants remain unclear.Here,disease-susceptible cherry rootstock'Gisela 6'and disease-resistant cherry rootstock'Haiying 1'were grafted onto each other or self-grafted.The effect of their root exudates on the soil microbiome composition and the abundance of pathogenic Agrobacterium were studied.Grafting onto the disease-resistant rootstock helped to reduce the abundance of pathogenic Agrobacterium,accompanied by altering root exudation,enriching potential beneficial bacteria,and changing soil function.Then,the composition of the root exudates from grafted plants was analyzed and the potential compounds responsible for decreasing pathogenic Agrobacterium abundance were identified.Based on quantitative measurement of the concentrations of the compounds and testing the impacts of supplied pure chemicals on abundance and chemotaxis of pathogenic Agrobacterium and potential beneficial bacteria,the decreased valine in root exudates of the plant grafted onto resistant rootstock was found to contribute to decreasing Agrobacterium abundance,enriching some potential beneficial bacteria and suppressing crown gall disease.This study provides insights into the mechanism whereby grafted plants suppress soil-borne disease.
Lin Chen、Lusen Bian、Qinghua Ma、Ying Li、Xinghong Wang、Yunpeng Liu
展开 >
National Permanent Scientific Research Base for Warm Temperate Zone Forestry of Jiulong Mountain,Experimental Center of Forestry in North China,Chinese Academy of Forestry,Beijing 102300,China
State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China,Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081,China
国家自然科学基金国家自然科学基金Innovation Program of Chinese Academy of Agricultural Sciences
NETL
NSTL
万方数据
