Innate Root Exudates Contributed to Contrasting Coping Strategies in Response to Ralstonia solanacearum in Resistant and Susceptible Tomato Cultivars
文献类型： 外文期刊
作者： Liu, Chong 1 ; Geng, Hao-Yang 1 ; Li, Wang-Xi 1 ; Li, Ya-Ying 1 ; Lu, Yu-Sheng 1 ; Xie, Kai-Zhi 1 ; Sun, Li-Li 1 ; Zhang, Jie-Xin 1 ; Peng, Huan-Long 1 ; Shi, Chao-Hong 1 ; Li, Wan-Ling 1 ; Zhou, Chang-Min 1 ; Gu, Wen-Jie 1 ; Wang, Dan 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Inst Agr Resources & Environm, Guangzhou 510640, Peoples R China
2.Minist Agr & Rural Affairs, Guangdong Engn Res Ctr Soil Microbes & Cultivated, Key Lab Plant Nutr & Fertilizer South Reg, Guangdong Key Lab Nutrient Cycling & Farmland Cons, Guangzhou 510640, Peoples R China
3.Guangdong Lab Lingnan Modern Agr, Maoming Branch, Maoming 525000, Peoples R China
关键词： bacterial wilt; Ralstonia solanacearum; tomato; root exudates; rhizosphere microorganism
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.1； 五年影响因子：6.3 ）
ISSN： 0021-8561
年卷期： 2023 年 71 卷 50 期
页码：
收录情况： SCI
摘要： Tomato cultivars with contrasting resistance to pathogens regulate root exudates differentially in response to Ralstonia solanacearum attacks. However, strategies using innate root exudates against infection remain unknown. This study analyzed the innate root exudates of two tomato cultivars and their functions in regulating R. solanacearum infection. The innate root exudates differed between the two cultivars. Astaxanthin released from resistant plants inhibited colonization by R. solanacearum but promoted motility, while neferine released from susceptible plants suppressed motility and colonization. The secretion of astaxanthin in resistant tomatoes promoted the growth of biocontrol fungi in soil and reduced the abundance of pathogenic fungi. Neferine secreted by the susceptible cultivar inhibited the relative abundance of the bacterial-biocontrol-related Bacillus genus, indirectly reducing the soil's immune capacity. This study revealed contrasting strategies using root exudates in resistant and susceptible tomato cultivars to cope with R. solanacearum infection, providing a basis for breeding disease-resistant cultivars.
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