西方红杉苗木耐药性和易受香柏叶病的组织学,化学和基因表达差异
Juan A Aldana1, Belaid Moa2, Jim Mattsson3
1School of Arts, Science, and Education, Medicine Hat College, Medicine Hat, AB, Canada.
Frontiers in plant science
|February 21, 2024
概括
抗叶病的西红杉幼苗具有更厚的皮皮和更高水平的特定化合物. 这些构成性差异可以用于繁殖抗病的西部红杉 (Thuja plicata).
科学领域:
- 植物病理学 植物病理学
- 森林遗传学 森林遗传学
- 植物生理学 植物生理学
背景情况:
- 西方红杉 (Thuja plicata) 在北美具有经济和文化意义.
- 年轻的西红杉易受香柏叶病 (Didymascella thujina) 的感染,影响幼儿园和种植园.
- 在Thuja plicata中存在对D. thujina耐药性的变异性,这为繁殖提供了潜力.
研究的目的:
- 为了确定耐药和易感的Thuja plicata幼苗之间的表型和基因表达差异.
- 为了阐明对西红杉树叶病的构成性抵抗机制.
主要方法:
- 对抗性和易受性Thuja plicata家族的组织学分析.
- 对受感染和未受感染的苗木进行化学分析 (营养素,素,粉,烯).
- RNA-Seq分析用于比较耐药和易感家族之间的基因表达.
主要成果:
- 耐药的苗木表现出较厚的皮质和较低的口腔密度,与易受影响的苗木相比.
- 耐药植物表现出较高的沙宾和α-thujene的叶子度.
- 基因表达分析显示,抗性植物中富含氨酸的重复受体样蛋白激酶和树皮储存蛋白的转录水平较高.
结论:
- 构成性表型 (组织学,化学) 和基因表达的差异存在于耐药和易感的Thuja plicata幼苗之间.
- 这些已识别的差异可以用于标记器辅助的选择和繁殖计划.
- 未来的育种工作可以增强对西红树叶病的抵抗力.
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