Characterization and pathogenicity of a Paecilomyces variotii isolate infecting the Asian citrus psyllid, Diaphorina citri Kuwayama (Hemiptera: Psyllidae), in China
文献类型： 外文期刊
作者： Song, Xiaobing 1 ; Peng, Aitian 2 ; Cui, Yiping 2 ; Ling, Jinfeng 2 ; Cheng, Baoping 2 ; Zhang, Lianhui 1 ;
作者机构： 1.South China Agr Univ, Guangdong Prov Key Lab Microbial Signals & Dis Co, Agr Coll, Guangzhou, Peoples R China
2.Guangdong Acad Agr Sci, Plant Protect Res Inst, Guangdong Prov Key Lab High Technol Plant Protect, Guangzhou, Peoples R China
关键词： Diaphorina citri Kuwayama; Asian citrus psyllid; Paecilomyces variotii; microbial control; Huanglongbing
期刊名称：INTERNATIONAL JOURNAL OF PEST MANAGEMENT （ 影响因子：1.907； 五年影响因子：1.849 ）
ISSN： 0967-0874
年卷期： 2020 年 66 卷 1 期
页码：
收录情况： SCI
摘要： Diaphorina citri Kuwayama (Hemiptera: Psyllidae) is the primary vector of Candidatus Liberibacter asiaticus (Las), which is responsible for Huanglongbing (HLB), the most devastating disease affecting Asian citrus. A fungal strain isolated from Guangdong citrus groves that infects D. citri adults was isolated and characterized, and morphological and genetic data identified this fungal pathogen as Paecilomyces variotii. The isolated fungus was able to infect healthy D.citri adults and cause a disease phenotype similar to that observed in the field, fulfilling Koch's postulates. In laboratory bioassays, high levels of mortality were observed in D. citri adults after 10 days, and the corrected mortality rate was 98.86% using a conidial suspension of 1.0 x 10(8) conidia/mL. Under greenhouse conditions, the corrected mortality rate of D. citri adults was 66.71% on the 7th day when a conidial suspension of 1.0 x 10(8) conidia/mL was applied by spraying.
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