在加利福尼亚州,与年轻葡萄藤相关的Fusarium物种的鉴定和致病性正在下降
Marcelo I Bustamante1, Colin Todd2, Karina Elfar1
1Department of Plant Pathology, University of California, Davis, CA 95616.
Plant disease
|December 12, 2023
概括
类真菌会导致葡萄树干的重大疾病,影响产量和葡萄树的寿命. 这项研究确定了10种Fusarium物种,其中Fusarium annulatum是最常见的,并证实了它们在年轻葡萄树上的致病性.
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.
- 葡萄种植 葡萄种植 葡萄种植
背景情况:
- 葡萄树干疾病 (GTD) 在全球范围内显著减少葡萄园产量和寿命.
- 真菌病原体,特别是类物种,与GTD有关,影响多年作物.
研究的目的:
- 识别和确定与加利福尼亚州葡萄树干疾病相关的Fusarium物种的致病性.
- 调查类物种在年轻葡萄树衰退中的作用.
主要方法:
- 在加利福尼亚州的苗圃和葡萄园 (2018-2022) 进行实地调查,以隔离真菌.
- 使用翻译延长因子1-alpha (tef1) 和RNA聚合酶II第二大子单元 (rpb2) 基因进行了形态特征和多位点遗传学分析.
- 在Paulsen根茎上使用Koch的假设进行病原性测试.
主要成果:
- 确定了十种Fusarium物种,属于六个物种综合体:F. fujikuroi (FFSC),F. oxysporum (FOSC),F. solani (FSSC),F. sambucinum (FSAMSC),F. incarnatum-equiseti (FIESC) 和F. tricinctum (FTSC). 这些物种包括:
- 最常见的物种是Fusarium annulatum (FFSC),在73.5%的症状年轻葡萄园和62.5%的苗圃材料中发现.
- 在葡萄藤根茎上证实了10种最常见物种的致病性.
结论:
- 类物种是葡萄树干疾病和年轻葡萄树衰退的重要贡献者.
- 这些真菌可能会作为机会性病原体,特别是在压力条件下,影响葡萄藤的健康和寿命.
关键词:
葡萄酒 (Vitis vinifera) L. 葡萄酒 (Vitis vinifera) L. 葡萄酒 (Vitis vinifera) L. 葡萄酒 (Vitis vinifera) L. 葡萄酒 (Vitis vinifera) L. 葡萄酒 (L.病因 病因学 病因学葡萄树干疾病 葡萄树干疾病人类的基因组学.更多相关视频
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