Powdery mildew resistance in strawberry fruit

草莓果实的白粉病抗性

• 批准号: 2290150
• 金额: --
• 依托单位: University of Reading
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2290150
• 关键词: Powdery; mildew; resistance; strawberry; fruit

Powdery mildew is rated the most important strawberry disease for UK strawberry growers; an untreated epidemic of powdery mildew on strawberry leads to severe yield loss and unmarketable fruit. Powdery mildew is currently controlled by regular applications of fungicide. However, the evolution of fungicide resistance to DMI compounds has exacerbated the already heightened concerns over the loss of effective fungicides. Current pre-breeding work at NIAB EMR has laid the groundwork to alleviate this problem through the identification of multiple genetic markers associated with powdery mildew resistance in strawberry foliage. ObjectivesThis studentship will focus on disease symptom progression in the strawberry fruits themselves. Through the utilisation of advanced imaging technologies in the assessment of pathogenicity assays we will be able to screen strawberry fruits for resistance to powdery mildew. The phenotyping data will feed into a genome wide association study, a powerful analysis that is able to identify markers linked to resistance genes present across all strawberry cultivars. Furthermore, by applying the imaging techniques, the project will determine whether powdery mildew resistance is tissue specific and if each tissue (i.e. leaf, calyx and strawberry) contains its own suite of genes responsible for conferring resistance.

白粉病被认为是英国草莓种植者最重要的草莓疾病;未经治疗的草莓白粉病流行导致严重的产量损失和滞销的水果。白粉病目前通过定期施用杀真菌剂来控制。然而，杀真菌剂对杀真菌剂化合物的抗性的演变加剧了对有效杀真菌剂损失的已经高度关注。NIAB EMR目前的预育种工作为通过鉴定与草莓叶片中的白粉病抗性相关的多个遗传标记来缓解这一问题奠定了基础。目的本研究将集中于草莓果实本身的疾病症状进展。通过利用先进的成像技术在致病性测定的评估，我们将能够筛选草莓果实对白粉病的抗性。表型数据将输入全基因组关联研究，这是一种强大的分析，能够识别与所有草莓品种中存在的抗性基因相关的标记。此外，通过应用成像技术，该项目将确定白粉病抗性是否具有组织特异性，以及每个组织（即叶，花萼和草莓）是否包含自己的一套负责赋予抗性的基因。