Production profile and comparison analysis of main toxin components of Fusarium oxysporum f.sp.sesami isolates with different pathogenicity levels  

作　　者：Hailing Li Yinghui Duan Guizhen Xu Shuxian Chang Ming Ju Yin Wu Wenen Qu Hengchun Cao Haiyang Zhang Hongmei Miao 

机构地区：[1]The Shennong Laboratory,Zhengzhou,450002,People's Republic of China [2]Henan Sesame Research Center,Henan Academy of Agricultural Sciences,Zhengzhou,450002,People's Republic of China [3]Henan Key Laboratory of Specific Oilseed Crops Genomics(Henan Sesame Research Center,Henan Academy of Agricultural Sciences),Zhengzhou,450002,People's Republic of China [4]Institute of Cereal and Oil Crops,Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang,050035,People's Republic of China

出　　处：《Oil Crop Science》2023年第2期104-110,共7页中国油料作物学报(英文版）

基　　金：financially supported by China Agriculture Research System of MOF and MARA(CARS-14);the Key Project of Science and Technology of Henan province(201300110600);Zhongyuan Science and Technology Innovation Leading Talent Plan(214200510020);the Zhongyuan Scientist Workshop Construction(214400510026);the Science and Technology Research Project of Henan Province(222102110081);Key Research and Development Project of Henan Province(22111520400);Distinguished Young Scholars from Henan Academy of Agricultural Sciences(2022JQ01).

摘　　要：Fusarium wilt is a common fungal disease in sesame caused by Fusarium oxysporum f.sp.sesami(FOS).To determine the toxin production profiles of the FOS isolates with different pathogenicity levels under various culture conditions,we assessed the content variation of fusaric acid(FA)and 9,10-dehydrofusaric acid(9,10-DFA)produced by the four representative FOS isolates.Results indicated that the concentration of FA reached to a maximum of 2848.66μg/mL in Czapek medium,while 9,10-DFA was mainly produced in Richard and Lowcarbon Richard medium.The concentration of 9,10-DFA on Richard culture medium varied from 0μg/mL to 716.89μg/mL.Of the five culture media used in this study,Czapek culture medium was the most conductive to produce FA.FA production was significantly affected by culture medium,culture time,and their interactions.Results suggest that there is no correlation between toxin production and pathogenicity level of FOS isolates.These findings provide key information for the mechanism analysis of FOS-sesame interaction and pathogen control.

关 键 词：Fusarium oxysporum Fusaric acid 9 10-dehydrofusaric acid Pathogenicity level 

分 类 号：S435.653[农业科学—农业昆虫与害虫防治]