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鱼的"像星星一样"的疾病 (
Sigal Perets1, Joshua Fooks2, David Ezra3
1Advanced solutions for crop protection, Hadera, Israel; pesigal@gmail.com.
一个新的"像星星"的皮症状在桃果上与Botrytis cinerea有关. 这种与枯的花朵部位相关的真菌感染会造成化品损伤,并影响高达50%的水果,影响其营销能力.
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.
- 园艺园艺 园艺园艺
背景情况:
- 在地中海沿岸的年轻果上观察到一种新型的状星状症状.
- 这些化品损伤显著影响了水果的销售能力,影响了高达50%的作物.
- 症状始终与附着的,枯的花朵部分存在相关.
研究的目的:
- 为了确定观察到的桃果上的星星症状的致病因子.
- 为了实现科赫的假设,确认孤立的真菌的病原性.
- 用形态学和分子方法来描述已识别的真菌.
主要方法:
- 从有症状的果果和附着的花部位中分离真菌,使用土豆乳糖 (PDA) 与四环素.
- 致病性测试 (科赫的假设) 涉及用隔离的真菌对健康的果苗进行注射.
- 用ITS,RPB2和BT-1基因测序对真菌殖民地和菌体进行形态表征,并进行分子鉴定.
主要成果:
- 两个真菌,Alternaria sp. 这两个真菌. 和Botrytis sp. 已经被分离出来;只有Botrytis sp. 已经被分离出来. 在接种疫苗时引起了类似的症状.
- 分子分析证实该分离物是Botrytis cinerea,与已知的菌株具有很高的序列相同性 (99.80-99.87%).
- 鉴定到的Botrytis cinerea分离物产生了特有的灰棕色殖民地和圆形的状,形成了微小硬质细胞.
结论:
- Botrytis cinerea被确定为以色列桃果子上的"星状"皮症状的致病因子.
- 这项研究提供了第一个关于B. cinerea在该地区的鱼身上引起这种特定症状的报告.
- 这些发现突显了管理附着的花碎片的重要性,以减轻瓜种植的化品损害和经济损失.
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