数字农科院2.0

First report of fruit rot caused by Fusarium avenaceum and Fusarium graminearum on Plum in Yunnan, China

文献类型： 外文期刊

作者： Fenghuan Yang;Yonghui Cheng;Chao Yu;Yijuan Yang;Zhenghui Huang;Huamin Chen

作者机构：

关键词： Causal agent;Fruit rot;Fusarium;Prunus salicina lindl

期刊名称： Crop Protection

ISSN： 0261-2194

年卷期： 2025 年 198 卷

页码：

收录情况： SCIE（2025版）

摘要： Plum (Prunus salicina Lindl.) is cultivated worldwide for its nutritional value. An outbreak of a disease that caused fruit rot in plums in July 2024 resulted in a 30 %–60 % yield loss in the commercial orchard in Suijiang County, Yunnan Province, China. A total of 15 plums with rot symptoms were collected from 4 orchards, and 13 fungal isolates were obtained from these diseased plums. The 13 isolates were classified into 2 groups based on colony morphology. Group 1 comprised 10 isolates exhibiting fluffy white aerial hyphae with golden pigment rings, whereas Group 2 comprised 3 isolates displaying white mycelium with pink pigmentation. The pathogenicity assays confirmed that the 13 isolates induced fruit rot symptoms at 7–10 days post inoculation. The fungal isolates exhibiting the same morphological features as the inoculated strains were reisolated from diseased plums, fulfilling Koch's postulates. Four strains (YZS3.1, YZS4.2, YZS5.3, and YZS7.1) in Group 1 and one strain in Group 2 (YN-3) were identified by molecular characterization, including sequencing of the internal transcribed spacer region, translation elongation factor (TEF1), and RNA polymerase II subunit (RPB2). The phylogenetic analysis of TEF1 and RPB2 identified Group 1 isolates as Fusarium avenaceum and Group 2 isolates as F. graminearum. These findings indicated that F. avenaceum and F. graminearum are the causal agents of fruit rot in plums in Yunnan Province, China.

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