Parthiban Subramanian, Jung-Hye Choi, So-Soo Kim, Bo-Eun Kim, Ja-Yeong Jang, Ji-Seon Baek, Theresa Lee
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引用次数: 0
摘要
赤霉病(Fusarium head blight, FHB)是影响小麦和大麦产量和品质的重要病害。为了研究杀菌剂药效随时间的变化,从2010-2013年和2020-2023年韩国全罗北道感染的小麦和大麦中分离出161株FHB菌株(亚洲F.和谷物F.)。在过去的10年里,除了少数例外,FHB真菌对去甲基化抑制剂(dmi)、甲基苯并咪唑氨基甲酸酯(MBCs)和邻苯二甲酸亚胺产生了耐药性。此外,对琥珀酸脱氢酶抑制剂(SDHI)和醌外抑制剂(QoI)没有明显的耐药性,但对苯基吡咯(PP)的敏感性增加。结果表明,高剂量的DMI、DMI + DMI、MBC、MBC + DMI和PP控制毛霉烯,而玉米赤霉烯酮仅受SDHI控制。qi、qi + DMI和邻苯二胺对霉菌毒素的产生没有控制作用。尽管出现了耐药性,DMI、MBC和PP仍可用于控制韩国小麦和大麦中的FHB和真菌毒素,并密切监测耐药性。
Ten-Year Comparison of Fungicide Sensitivity and Mycotoxin Production of Fusarium Head Blight Isolates from Korea.
Fusarium head blight (FHB) is an important disease reducing yield and quality of wheat and barley. To study changes in fungicide efficacy over time, 161 FHB isolates (F. asiaticum and F. graminearum) were obtained from infected wheat and barley in the Jeolla provinces of the Republic of Korea from 2010-2013 and 2020-2023. Over 10 years, FHB fungi developed resistance to demethylation inhibitors (DMIs), methyl benzimidazole carbamates (MBCs), and phthalimides, with few exceptions. Also, no significant resistance against succinate dehydrogenase inhibitors (SDHI) and quinoneoutside inhibitors (QoI) was observed, but sensitivity to phenylpyrrole (PP) increased. Mycotoxin production by four representative isolates of both species indicated that higher doses of DMI, DMI + DMI, MBC, MBC + DMI, and PP controlled trichothecenes, whereas zearalenone was controlled only by SDHI. QoI, QoI + DMI, and phthalimide did not control mycotoxin production in either species. Despite resistance development, DMI, MBC, and PP can still be used to control FHB and mycotoxins in wheat and barley in Korea with close monitoring of resistance.