Ethylene and Pathogen Infection Responses in Tomato and Arabidopsis

番茄和拟南芥的乙烯和病原体感染反应

• 批准号: 9728133
• 负责人: Harry Klee
• 金额: --
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-02-01 至 2001-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9728133&HistoricalAwards=false
• 关键词: Ethylene; Pathogen; Infection; Responses; Tomato

9728133 Klee The interactions of plants and disease-causing pathogens generally fall into two types: compatible and incompatible. Incompatibility leads to resistance while compatibility leads to disease. In the absence of a resistant response, disease symptoms can spread leading to severe damage or death of the plant. Using an ethylene-insensitive tomato mutant, we have demonstrated a central role for this phytohormone in disease symptom development in compatible tomato:pathogen interactions. We intend, through the use of mutants, to define how ethylene controls disease development in compatible plant:pathogen interactions. Experiments will define at a molecular genetic level the role of ethylene in symptom development in the tomato:Xanthomonas interaction. Using plants altered in ethylene synthesis or perception as well as plants deficient in accumulation of salicylic acid (SA), the PIs will characterize the roles of ethylene and SA in regulating early and advanced stages of disease. The PIs will also examine a compatible interaction in Arabidopsis. An understanding of how ethylene insensitivity attenuates symptom development to multiple pathogenic organisms also offers the possibility of broad and durable host tolerance with significant applications to agriculture.

9728133 KLEE植物和致病病原体的相互作用通常分为两种类型：兼容和不兼容。 不兼容会导致抵抗力，而兼容性导致疾病。 在没有抵抗反应的情况下，疾病症状会传播导致植物严重损害或死亡。 使用对乙烯不敏感的番茄突变体，我们在兼容番茄的疾病症状发展中表现出了这种植物激素的核心作用：病原体相互作用。 我们打算通过使用突变体来定义乙烯如何控制兼容植物中的疾病发展：病原体相互作用。 实验将在分子遗传水平上定义乙烯在番茄症状发育中的作用：xanthomonas相互作用。 使用乙烯合成或感知中改变的植物以及植物缺乏水杨酸积累（SA），PIS将表征乙烯和SA在调节疾病早期和晚期阶段中的作用。 PI还将检查拟南芥中兼容的相互作用。 对乙烯不敏感性如何减轻症状发育到多种致病生物的理解也提供了具有广泛和耐用的宿主耐受性，并在农业上有重大应用。