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隔离,表征和致病性Fusarium物种,导致小麦冠状腐烂

Guoping Ma¹, Heng Wang^1,2, Kai Qi¹

¹Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Shandong Key Laboratory of Plant Virology, Jinan, China.

Frontiers in microbiology

|June 14, 2024

概括

小麦中的菌冠状腐烂 (FCR) 是由多种菌种引起的,菌伪素在山东省占主导地位. 这项研究确定了11种物种,包括新的FCR病原体,突出了比以前知道的更大的多样性.

科学领域:

植物病理学植物病理学
菌类学菌类学是指菌类学.
农业科学农业科学

背景情况:

菌冠 (FCR) 是一种严重的土壤传播疾病,影响全球小麦产量.
了解因果Fusarium物种的多样性对于有效的疾病管理策略至关重要.

研究的目的:

调查从中国山东省的小麦中引起FCR的Fusarium物种的多样性.
为了确定在研究区域中占主导地位的负责FCR的Fusarium物种.
评估在小麦上发现的Fusarium物种的致病性.

主要方法:

从山东省的13个城市收集了199个患病的小麦样本.
使用翻译延长因子-1α (TEF-1α),RPB1和RPB2基因序列的遗传学分析,分离和识别了468个Fusarium分离物.
在小麦幼苗上进行致病性测试,以确认引起疾病的潜力.

主要成果:

在山东省确定了11种与FCR相关的Fusarium物种.
鉴定出Fusarium pseudograminearum是占主导地位的物种,占283个分离物种.
在全球范围内,Fusarium incarnatum,Fusarium ipomoeae和Fusarium flocciferum首次被报告为小麦中的FCR病原体.
所有11种已识别的Fusarium物种都表现出致病性,导致典型的FCR症状.

结论:

山东省的小麦FCR是由比以前认可的更广泛的Fusarium物种引起的.
Fusarium pseudograminearum是主要的病原体,但其他物种有助于疾病发病率.
这项研究扩大了FCR已知的病原体谱,为未来的疾病控制工作提供了信息.

关键词:

菌体的皇冠腐烂已经发生了.虫 (Fusarium spp.) 是一种植物.标志性特征的描述.病原性是一种病原性.小麦小麦小麦小麦小麦小麦小麦.

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