Identification of the expression mechanism of the virulence factors by quorum sensing in plant pathogen and its application

许多植物病原体具有群体感应系统，这是一种依赖于细胞群体密度的细胞间通讯机制。几种N-酰基高丝氨酸内酯（阿勒）已被确定为参与这一机制的信号化合物。在这项研究中，我们试图确定未知的因素，这是由AHL介导的群体感应植物病原菌Pantoea ananatis SK-1。结果表明，菠萝斑潜蝇SK-1胞外多糖（EPS）的产生和细胞聚集受AHL介导的群体感应调节。

Many plant pathogens have a quorum-sensing system, a cell-cell communication mechanism that depends on cell population density. Several kinds of N-acyl homoserine lactone (AHL) have been identified as signal compounds involved in this mechanism. In this study, we attempted to identify the unknown factors, which were regulated by AHL-mediated quorum sensing in the plant pathogen Pantoea ananatis SK-1. As the results, it was revealed that the production of extracellular polysaccharide (EPS) and cell aggregation were regulated by AHL-mediated quorum sensing in P. ananatis SK-1.