Fungal Pathogen Diversity and Fungicide Resistance Assessment in Fusarium Crown Rot of Wheat in the Huanghuai Region of China

被引：0
作者：
Xu, Chenghui [1 ]
Guo, Meiling [1 ]
Han, Xingmin [1 ]
Ren, Chunjiang [1 ]
Liu, Chao [1 ]
Fu, Weitao [2 ]
Qi, Junshan [3 ]
Ge, Zhiwei [4 ]
Ma, Zhonghua [1 ]
Chen, Yun [1 ]
机构：
[1] Zhejiang Univ, Inst Biotechnol, State Key Lab Rice Biol & Breeding, Zhejiang Key Lab Biol & Ecol Regulat Crop Pathogen, Hangzhou 310058, Peoples R China
[2] Hefei Comprehens Natl Sci Ctr, Inst Hlth & Med, Hefei 230601, Peoples R China
[3] Shandong Acad Agr Sci, Inst Plant Protect, Shandong Key Lab Green Prevent & Control Agr Pests, Jinan 250100, Peoples R China
[4] Zhejiang Univ, Anal Ctr Agrobiol & Environm Sci, Hangzhou 310058, Peoples R China
来源：
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2025年 / 73卷 / 04期
关键词：
Fusarium crown rot; pathogen population; virulence; trichothecene genotypes; Fusarium pseudograminearum; resistance risk; resistance mechanism; COMMON ROOT-ROT; HEAD BLIGHT; PSEUDOGRAMINEARUM; GRAMINEARUM; QUEENSLAND; CULMORUM; COMPLEX; BARLEY;
D O I：
10.1021/acs.jafc.4c09274
中图分类号：
S [农业科学];
学科分类号：
09 ;
摘要：
Fusarium crown rot (FCR) poses a major threat to wheat production in the Huanghuai wheat region of China. This study aims to enhance understanding of pathogen populations causing FCR, focusing on their pathogenicity, trichothecene genotypes, and fungicide resistance. During the 2022-2023 growing seasons, we collected 1820 fungal isolates from 233 locations in this region. Our results identified Fusarium pseudograminearum, Fusarium graminearum, and Fusarium asiaticum as the primary pathogens, with F. pseudograminearum exhibiting the highest virulence. Three trichothecene genotypes were identified, including nivalenol, 3-acetyldeoxynivalenol, and 15-acetyldeoxynivalenol. No correlation was observed between trichothecene genotype and virulence, except in F. asiaticum. Antifungal assays demonstrated that all six tested fungicides effectively inhibited F. pseudograminearum, with fludioxonil being particularly effective. Field surveys identified isolates resistant to difenoconazole and pyraclostrobin. Laboratory analysis also revealed strains with FpSdhC1 A83 V and FpSdhC1 S80N mutations conferring resistance to cyclobutrifluram. These findings offer critical insights for developing effective control strategies to manage FCR.
引用
收藏
页码：2299 / 2311
页数：13
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