Fusarium pseudograminearum as an emerging pathogen of crown rot of wheat in eastern China
文献类型： 外文期刊
作者： Deng, Y. Y. 1 ; Li, W. 1 ; Zhang, P. 2 ; Sun, H. Y. 1 ; Zhang, X. X. 1 ; Zhang, A. X. 1 ; Chen, H. G. 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing 210014, Jiangsu, Peoples R China
2.Yangzhou Univ, Coinnovat Ctr Modern Prod Technol Grain Crops, Yangzhou 225009, Jiangsu, Peoples R China
3.Jiangsu Acad Agr Sci, Inst Food Crops, Nanjing 210014, Jiangsu, Peoples R China
4.Jiangsu Univ, Inst Life Sci, Zhenjiang 212013, Jiangsu, Peoples R China
关键词： chemotype; crown rot of wheat; Fusarium pseudograminearum; mating type
期刊名称：PLANT PATHOLOGY （ 影响因子：2.59； 五年影响因子：2.924 ）
ISSN： 0032-0862
年卷期： 2020 年 69 卷 2 期
页码：
收录情况： SCI
摘要： Fusarium crown rot of wheat has been spreading in the Huanghuai wheat-growing area in China since 2010, leading to a potential yield loss. To investigate the pathogens associated with this disease in Jiangsu and Shandong provinces in recent years, 617 Fusarium isolates were isolated from nine sites in these two provinces between 2014 and 2016. Of these isolates, 372 were identified as Fusarium pseudograminearum, and the remaining isolates were identified as F. asiaticum and F. graminearum, suggesting that F. pseudograminearum is becoming a predominant causative pathogen of crown rot of wheat in eastern China. Trichothecene gene detection and chemical analyses of trichothecenes indicated that the F. pseudograminearum isolates belonged to the 3-ADON or 15-ADON chemotype, and one isolate had the NIV genotype but produced no detectable NIV. 3-ADON isolates were predominant in Jiangsu, whereas 15-ADON isolates were prevalent in Shandong. The mating type of the F. pseudograminearum isolates were identified. MAT-1 and MAT-2 existed, but in most collections, particularly those in Jiangsu, the ratios of the two mating types deviated significantly from an expected 1:1 ratio. The reason for the occurrence of F. pseudograminearum is hypothesized, and the chemotype and mating type distribution of this species in these two provinces are analysed.
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