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在Xylella fastidiosa感染的蓝植物中,视觉无症状的叶子损失
Paul M Severns1,2, Jonathan E Oliver3
1Department of Plant Pathology, University of Georgia, Athens, GA 30602, USA.
Pathogens (Basel, Switzerland)
|October 25, 2024
概括
紫 (Xylella fastidiosa) 导致蓝的叶子很容易脱落,甚至在症状出现之前. 这种叶子掉落可能是疾病的早期迹象,对于检测至关重要.
科学领域:
- 植物病理学 植物病理学
- 细菌学 细菌学是一门学科.
- 园艺科学 园艺科学
背景情况:
- 紫菌 (Xylella fastidiosa,Xf) 是一种重要的植物病原体,引起长期潜伏期的疾病,使早期检测复杂化.
- 对Xf的有效疾病管理策略依赖于在广泛的症状出现之前识别受感染的植物.
研究的目的:
- 研究蓝植物中Xylella fastidiosa的早期检测方法.
- 评估叶子脱落力作为Xf感染的潜在指标.
- 为了识别早期除 (自我修剪) 作为Xf疾病的症状.
主要方法:
- 使用热成像来识别症状前Xf感染的蓝叶.
- 测量了从Xf感染植物中移除叶子和控制蓝植物所需的最小力.
- 在不同品种和症状类别中比较叶子脱落力.
主要成果:
- 在Xf感染植物的症状和前症状叶子之间没有发现叶子脱落力的统计差异.
- 感染Xf的植物上的叶子脱落的力比对照植物的叶子少30-50%,因品种而异.
- 在热和视觉症状的叶子中观察到自我修剪 (脱落),表明早期疾病症状.
结论:
- 视觉上症状前的叶子和症状叶子一样容易脱落,这凸显了它们对早期Xf检测的重要性.
- 叶子自剪,即使在无症状的叶子中,也可能是蓝中Xylella fastidiosa感染的未被识别的早期症状.
- 在Xf感染的植物中自我修剪的现象需要在其他重要的植物物种中进行进一步的调查.
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