The role of phytotoxins in ray blight disease of pyrethrum and significance of toxin tolerance to disease resistance

植物毒素在除虫菊射线枯病中的作用及耐毒性对抗病的意义

• 批准号: LP0348826
• 负责人: Prof Calum Wilson
• 金额: $ 5.7万
• 依托单位: University of Tasmania
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Projects
• 财政年份: 2003
• 资助国家: 澳大利亚
• 起止时间: 2003-08-13 至 2007-08-12
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP0348826
• 关键词: role; phytotoxins; ray; blight; disease

Ray blight disease, caused by Phoma ligulicola, is the greatest threat to the Australian pyrethrum industry causing $2.0M in annual losses. We aim to clarify the pathology of P.ligulicola in pyrethrum, focussing on the role of fungal toxins during infection. Toxin importance in disease will be determined through histology and induction of toxin- pathogen mutants. Toxins will be characterised and used in tissue culture to select obtain toxin tolerant pyrethrum clones that will be evaluated for agronomic performance and disease resistance. Successful development of resistant clones will decrease production costs, minimise risk of fungicide resistance development and reduce environmental pollution.

由木霉菌引起的白纹枯病是澳大利亚除虫菊产业的最大威胁，每年造成200万美元的损失。我们的目的是阐明拟除虫菊酯中舌状念珠菌的病理，重点是真菌毒素在感染过程中的作用。毒素在疾病中的重要性将通过组织学和毒素-病原体突变的诱导来确定。毒素的特性将被用于组织培养，以选择获得毒素耐受性除虫菊无性系，这些无性系将被评估农艺性能和抗病能力。抗性克隆的成功开发将降低生产成本，将杀菌剂抗药性发展的风险降至最低，并减少环境污染。