Functional Genomics of the Interactions of Tomato and Pseudomonas syringae pv tomato DC3000

番茄和丁香假单胞菌番茄 pv 番茄 DC3000 相互作用的功能基因组学

• 批准号: 0077622
• 负责人: Alan Collmer
• 金额: $ 572.81万
• 依托单位: Cornell Univ - State: AWDS MADE PRIOR MAY 2010
• 依托单位国家: 美国
• 项目类别: Cooperative Agreement
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-01 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0077622&HistoricalAwards=false
• 关键词: Functional; Genomics; Interactions; Tomato; Pseudomonas

Rapid progress has been made in understanding the molecular basis of plant-microbe interactions. Tomato has been important in that research because of its genetic tractability, its economic value, and the cost of the many diseases that afflict it. A centerpiece of that work has been the gene-for-gene interactions of Pseudomonas syringae pv tomato DC3000 and tomato. DC3000 has emerged as an important model in molecular plant pathology because of its genetic tractability, because it also is a pathogen of Arabidopsis, and because its interactions with plants appear representative of many prevalent bacterial and fungal pathogens. An additional factor that makes DC3000 experimentally attractive is the evidence that its parasitic abilities are largely based on (an unknown number of) effector proteins that are injected into plant cells by the type III secretion system. Identification of these effectors will provide the basis for orderly dissection of the molecular processes underlying pathogenicity, and these proteins, which presumably have evolved to exquisitely alter plant gene expression and metabolism, are a likely source of new tools for plant biologists. Consequently, the first objective of this project is the sequencing of the complete genome of DC3000 by The Institute for Genomic Research and genome-based searches for genes encoding effector proteins and other potential virulence factors. Subsequent objectives involve microarray analyses to identify genes and regulons in both DC3000 and tomato that are likely to be important in the interaction and the development of a series of green fluorescent protein-based tools for monitoring molecular/cellular events in living plant tissues during bacterium-plant interactions. Because DC3000 interactions with tomato (and Arabidopsis) involve highly localized cellular events and appear to be highly multifactorial and dependent on redundant factors, these new tools will be essential for a functional genomic analysis of pathogenesis and defense. Other important objectives of the project involve the establishment of a community-oriented functional genomics annotation web site and database that will serve the wider research community and also provide the centerpiece for educational outreach activities involving high school students. DeliverablesThe key deliverables for the project are the complete genomic sequence of P. s. tomato DC3000, cell biology indicator plants, and bacterial mutants. The draft sequence of the genome is available through a href=www.tigr.org/tdb/mdb/mdbinprogress.html www.tigr.org/tdb/mdb/mdbinprogress.html /a, effector gene coordinates and other resources are available through the project web site a href=http://pseudomonas-syringae.org http://pseudomonas-syringae.org a/

在理解植物-微生物相互作用的分子基础方面取得了迅速进展。番茄在该研究中一直很重要，因为它的遗传易处理性，它的经济价值，和许多疾病的成本，折磨它。这项工作的核心是假单胞菌pv番茄DC 3000和番茄的基因对基因的相互作用。DC 3000已经成为分子植物病理学中的重要模型，因为它的遗传易处理性，因为它也是拟南芥的病原体，并且因为它与植物的相互作用似乎代表了许多流行的细菌和真菌病原体。使DC 3000在实验上具有吸引力的另一个因素是有证据表明其寄生能力主要基于通过III型分泌系统注入植物细胞的效应蛋白（数量未知）。这些效应子的鉴定将为有序解剖致病性的分子过程提供基础，这些蛋白质可能已经进化到精细地改变植物基因表达和代谢，是植物生物学家新工具的可能来源。因此，该项目的第一个目标是由基因组研究所对DC 3000的全基因组进行测序，并基于基因组搜索编码效应蛋白和其他潜在毒力因子的基因。随后的目标涉及微阵列分析，以确定基因和调节子在DC 3000和番茄可能是重要的相互作用和一系列的绿色荧光蛋白为基础的工具，用于监测分子/细胞的活植物组织中的事件在细菌-植物相互作用的发展。由于DC 3000与番茄（和拟南芥）的相互作用涉及高度本地化的细胞事件，似乎是高度多因子和冗余因子的依赖，这些新的工具将是必不可少的发病机制和防御功能基因组分析。该项目的其他重要目标包括建立一个面向社区的功能基因组学注释网站和数据库，为更广泛的研究界服务，并为涉及高中生的教育推广活动提供核心。该项目的关键成果是完整的P.s.基因组序列。番茄DC 3000、细胞生物学指示植物和细菌突变体。基因组的草图序列可通过a href= www.tigr.org/tdb/mdb/mdbinprogress.html www.tigr.org/tdb/mdb/mdbinprogress.html/a获得，效应基因坐标和其他资源可通过项目网站a href=http：pseudomonas-syringae.org http://pseudomonas-syringae.org a/