Nature子刊:根际菌群变化可使易感番茄品种更抗病

创作:gaoch 审核:gaoch 10月11日
两个品种的番茄,一种能够抗青枯雷尔氏菌引起的青枯病,另一种对其敏感;
两种番茄的根际菌群中,黄杆菌在抗性品种中占优,而芽孢杆菌和β变形菌则在易感品种中占优;
将抗性品种移植到易感品种生长过的土壤中,抗性品种也能感病,反之则易感品种能抗病;
两个品种的根系分泌物对致病菌的生长都没有抑制作用,因而认为是根际菌群影响了植株抗病性;
分离到与病原菌有拮抗作用的黄杆菌,将其接种到土壤中可防止易感品种发病。
延伸阅读
Nature Biotechnology [IF:35.724]

Rhizosphere microbiome structure alters to enable wilt resistance in tomato

改变根际菌群结构使番茄获得枯萎病抗性

10-08, Article, 10.1038/nbt.4232more

Abstract:
Tomato variety Hawaii 7996 is resistant to the soil-borne pathogen Ralstonia solanacearum, whereas the Moneymaker variety is susceptible to the pathogen. To evaluate whether plant-associated microorganisms have a role in disease resistance, we analyzed the rhizosphere microbiomes of both varieties in a mesocosm experiment. Microbiome structures differed between the two cultivars. Transplantation of rhizosphere microbiota from resistant plants suppressed disease symptoms in susceptible plants. Comparative analyses of rhizosphere metagenomes from resistant and susceptible plants enabled the identification and assembly of a flavobacterial genome that was far more abundant in the resistant plant rhizosphere microbiome than in that of the susceptible plant. We cultivated this flavobacterium, named TRM1, and found that it could suppress R. solanacearum-disease development in a susceptible plant in pot experiments. Our findings reveal a role for native microbiota in protecting plants from microbial pathogens, and our approach charts a path toward the development of probiotics to ameliorate plant diseases.

First Authors:
Min-Jung Kwak,Hyun Gi Kong,Kihyuck Choi,Soon-Kyeong Kwon,Ju Yeon Song

Correspondence Authors:
Seon-Woo Lee,Jihyun F Kim

All Authors:
Min-Jung Kwak,Hyun Gi Kong,Kihyuck Choi,Soon-Kyeong Kwon,Ju Yeon Song,Jidam Lee,Pyeong An Lee,Soo Yeon Choi,Minseok Seo,Hyoung Ju Lee,Eun Joo Jung,Hyein Park,Nazish Roy,Heebal Kim,Myeong Min Lee,Edward M Rubin,Seon-Woo Lee,Jihyun F Kim