The Distribution of Fusarium graminearum and Fusarium asiaticum Causing Fusarium Head Blight of Wheat in Relation to Climate and Cropping System

文献类型： 外文期刊

第一作者： Song, Yuli

作者： Song, Yuli;Yang, Gongqiang;Wang, Junmei;Zhang, Jiaojiao;Liu, Lulu;Xu, Fei;Song, Yuli;Yang, Gongqiang;Wang, Junmei;Liu, Lulu;Xu, Fei;Liu, Wei;Zhou, Yilin;Xu, Xiangming

作者机构：

关键词： climate conditions; cropping system; FHB; Fusarium asiaticum; Fusarium graminearum; Fusarium head blight; trichothecene chemotype

期刊名称：PLANT DISEASE （ 影响因子：4.614； 五年影响因子：5.33 ）

ISSN： 0191-2917

年卷期： 2021 年 105 卷 10 期

页码：

收录情况： SCI

摘要： In the main wheat production area of China (the Huang Huai Plain [HHP]), both Fusarium graminearum and Fusarium asiaticum, the causal agents of Fusarium head blight (FHB), are present. We investigated whether the relative prevalence of F. graminearum and F. asiaticum is related to cropping systems and/or climate factors. A total of 1,844 Fusarium isolates were obtained from 103 fields of two cropping systems: maize-wheat and rice-wheat rotations. To maximize the differences in climatic conditions, isolates were sampled from the north and south HHP regions. Based on the phylogenetic analysis of EF-1 alpha and Tri101 sequences, 1,207 of the 1,844 isolates belonged to F. graminearum, and the remaining 637 isolates belonged to F. asiaticum. The former was predominant in the northern region: 1,022 of the 1,078 Fusarium isolates in the north were F. graminearum. The latter was predominant in the southern region: 581 of the 766 Fusarium isolates belonged to F. asiaticum. Using an analysis based on generalized linear modeling, the relative prevalence of the two species was associated more with climatic conditions than with the cropping system. F. graminearum was associated with drier conditions and cooler conditions during the winter but also with warmer conditions in the infection and grain-colonization period as well as with maize-wheat rotation. The opposite was true for F. asiaticum. Except for the 15-acetyldeoxynvalenol genotype, the trichothecene chemotype composition of F. asiaticum differed between the two cropping systems. The 3-acetyldeoxynivalenol genotype was more prevalent in the maize-wheat rotation, whereas the nivalenol genotype was more prevalent in the rice-wheat rotation. The results also suggested that environmental conditions in the overwintering period appeared to be more important than those in the infection, grain-colonization, and prean thesis sporulation periods in affecting the relative prevalence of F. graminearum and F. asiaticum. More research is needed to study the effect of overwintering conditions on subsequent epidemic in the following spring.

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[1]The Distribution of Fusarium graminearum and Fusarium asiaticum Causing Fusarium Head Blight of Wheat in Relation to Climate and Cropping System. Song, Yuli,Yang, Gongqiang,Wang, Junmei,Zhang, Jiaojiao,Liu, Lulu,Xu, Fei,Song, Yuli,Yang, Gongqiang,Wang, Junmei,Liu, Lulu,Xu, Fei,Liu, Wei,Zhou, Yilin,Xu, Xiangming. 2021

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