Detection of fungicide resistance to fludioxonil and tebuconazole in Fusarium pseudograminearum , the causal agent of Fusarium crown rot in wheat

PeerJ

article

Na Zhang¹  Yiying Xu¹  Qi Zhang¹  Le Zhao¹  Yanan Zhu¹  Yanhui Wu¹  Zhen Li¹  Wenxiang Yang¹ 

[1] College of Plant Protection, Hebei Agricultrual University;Shangqiu Institute of Technology

关键词: Triticum aestivum L.;    Fusarium pseudograminearum;    Fusarium crown rot;    Fludioxonil;    Tebuconazole;    Fungicide resistance;    Baseline sensitivity;    Field populations;    Resistance monitoring;    Cross-resistance;   

DOI  :  10.7717/peerj.14705

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Fusarium crown rot (FCR) on wheat is a soil-borne disease that affects the yield and quality of the produce. In 2020, 297 Fusarium pseudograminearum isolates were isolated from diseased FCR wheat samples from eight regional areas across Hebei Province in China. Baseline sensitivity of F. pseudograminearum to fludioxonil (0.0613 ± 0.0347 μg/mL) and tebuconazole (0.2328 ± 0.0840 μg/mL) were constructed based on the in vitro tests of 71 and 83 isolates, respectively. The resistance index analysis showed no resistance isolate to fludioxonil but two low-resistance isolates to tebuconazole in 2020. There was an increased frequency of resistant isolates from 2021 to 2022 based on the baseline sensitivity for tebuconazole. There was no cross-resistance between fludioxonil and tebuconazole. This study provides a significant theoretical and practical basis for monitoring the resistance of F. pseudograminearum to fungicides, especially the control of FCR.

【 授权许可】

CC BY