Transport of Plant Cell Wall Breakdown Products into Microorganisms

这一行动为植物-病原体相互作用的探索性研究(SGER)提供了一小笔资金。植物细胞壁的降解产物转运或吸收到植物病原黄单胞菌、欧文氏菌和镰刀菌中的机制是本研究的重点。正在测量放射性标记的半乳糖醛酸在植物病原菌中的吸收，以确定运输动力学、运输系统的数量和细胞壁降解酶的诱导性。该项目之所以选择SGER机制，是因为所需的放射性标记化合物的定制合成成本很高。在一个资金充足的多年项目中，所涉及的风险因素比通常假设的要多。一些初步观察为该项目提供了强有力的证据，很有可能获得基本性质的新信息，以及关于许多农业重要植物软腐病过程的信息。

This action funds a Small Grant for Exploratory Research (SGER) in plant-pathogen interactions. The mechanism by which breakdown products of the plant cell wall are transported or taken up into phytopathogenic Xanthomonas, Erwinia and Fusarium species is the major focus of this research. The uptake of radiolabeled galacturonic acid into plant pathogens is being measured to determine the kinetics of transport, the number of transport systems, and the inducibility of cell wall degrading enzymes. The SGER mechanism was selected for this project because of the high cost of custom synthesis for the requisite radiolabeled compound. The element of risk involved is more than would normally be assumed in a fully funded, multi-year project. Some preliminary observations make a strong case for the project and it is highly likely that new information will be gained of a basic nature as well as on the processes of soft-rot diseases of many agriculturally important plants.***