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类作物，因其在土壤固氮、可持续农业和提供丰富的植物蛋白来源方面的作用而受到重视。作物产量和品质面临霜霉病 (DM) 病原体的高风险，影响英国的豌豆和联合豌豆，原因是最近广泛使用的用于室外播种的含甲霜灵的杀菌剂被撤回。该项目的目的是利用基因组工具了解病原体多样性及其在疾病流行中的作用，寻找并验证糖尿病遗传抗性的新来源。为此，我们将评估包含栽培品种、地方品种和野生物种的遗传多样性豌豆种质资源，以寻找新的抗性来源，并使用突变体、双亲群体和/或基因编辑来验证发现的候选基因的潜力。将与我们的工业合作伙伴利马格兰合作，使用标记辅助选择将已识别的抗性转移到优质豌豆品种中，学生将有机会在那里进行为期三个月的实习。还将对病原体多样性进行遗传表征，以开发一种诊断工具，用于快速识别病原体种族并绘制其在英国的分布图，以帮助种植者在品种选择中做出明智的决定。