Sustainable solutions to combat Downy Mildew pathogen of pea

对抗豌豆霜霉病病原体的可持续解决方案

• 批准号: 2749884
• 金额: --
• 依托单位: University of East Anglia
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2749884
• 关键词: Sustainable; solutions; combat; Downy; Mildew

Pea is a globally important legume crop valued for its role in soil nitrogen fixation, sustainable agriculture and providing a rich source of plant protein. The crop yield and quality are at a high risk from Downy Mildew (DM) pathogen, affecting both vining and combining peas in the UK, due to the recent withdrawal of the widely used metalaxyl-M containing fungicides for outdoor sowing of seeds. The aim of this project is to use genomic tools to understand the pathogen diversity and its role in disease epidemics, find and validate novel sources of genetic resistance to DM. To this end, we will evaluate a genetically diverse Pisum germplasm collection containing cultivars, landraces and wild species for novel sources of resistance and validate the potential of discovered candidate genes using mutants, biparental populations and/or gene editing. Identified resistances will be transferred into elite pea varieties, using marker-assisted selection in collaboration with our industrial partner, Limagrain, where the student will have the opportunity to undertake a three-month placement. The pathogen diversity will also be genetically characterized to develop a diagnostic tool for the rapid identification of pathogen races and map their distribution across UK to help the growers make an informed decision in the variety selection.

豌豆是一种全球重要的豆科作物，因其在土壤固氮、可持续农业和提供丰富的植物蛋白质来源方面的作用而受到重视。由于最近广泛使用的含有甲霜灵-M的杀菌剂被停用于户外播种，因此作物产量和质量面临霜霉病(DM)病原体的高风险，在英国影响豌豆的蔓生和结合。该项目的目的是利用基因组工具来了解病原体的多样性及其在疾病流行中的作用，寻找和验证糖尿病的新的遗传抗性来源。为此，我们将评估包含品种、地方品种和野生种的豌豆种质资源的遗传多样性，寻找新的抗源，并利用突变体、双亲群体和/或基因编辑来验证已发现的候选基因的潜力。通过与我们的工业合作伙伴LImagrain合作，使用标记辅助选择，已确定的抗性将被转移到豌豆精英品种中，学生将有机会进行为期三个月的安置。病原菌多样性还将具有遗传特征，以开发一种快速识别病原菌小种的诊断工具，并绘制其在英国各地的分布图，以帮助种植者在品种选择中做出知情决定。