Varied sensitivity to boscalid among different Clarireedia species causing dollar spot in turfgrass

被引：1

作者：

Hu, Jian ^{[1
]}

Zhang, Huangwei ^{[1
]}

Kong, Yixuan ^{[1
]}

Lamour, Kurt ^{[2
]}

Jung, Geunhwa ^{[3
]}

Yang, Zhimin ^{[1
]}

机构：

[1] Nanjing Agr Univ, Coll Agrograssland Sci, Nanjing 210095, Jiangsu, Peoples R China

[2] Univ Tennessee, Dept Entomol & Plant Pathol, Knoxville, TN 37996 USA

[3] Univ Massachusetts, Stockbridge Sch Agr, Amherst, MA USA

来源：

PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY | 2024年 / 204卷

关键词：

Dollar spot; Species of Clarireedia; Boscalid; Succinate dehydrogenase inhibitor; Differential sensitivity; Pathogenicity; SCLEROTINIA-HOMOEOCARPA; BOTRYTIS-CINEREA; MOLECULAR CHARACTERIZATION; THIOPHANATE-METHYL; GOLF-COURSES; ZYMOSEPTORIA-TRITICI; REDUCED SENSITIVITY; RESISTANCE; FUNGICIDE; DISEASE;

D O I：

10.1016/j.pestbp.2024.106029

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Dollar spot, a highly destructive turfgrasses disease worldwide, is caused by multiple species within the genus Clarireedia. Previous research indicated varying sensitivity to boscalid among Clarireedia populations not historically exposed to succinate dehydrogenase inhibitors (SDHIs). This study confirms that the differential sensitivity pattern is inherent among different Clarireedia spp., utilizing a combination of phylogenetic analyses, in vitro cross-resistance assays, and genetic transformation of target genes with different mutations. Furthermore, greenhouse inoculation experiments revealed that the differential boscalid sensitivity did not lead to pathogenicity issues or fitness penalties, thereby not resulting in control failure by boscalid. This research underscores the importance of continuous monitoring of fungicide sensitivity trends and highlights the complexity of chemical control of dollar spot due to the inherent variability in fungicide sensitivity among different Clarireedia spp.

引用

页数：8

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