Extracellular DNA enhances the formation and stability of symplasmata in Pantoea agglomerans YS19

The Journal of General and Applied Microbiology

Jing Zheng¹ 

[1] School of Life Science, Beijing Institute of Technology

关键词: extracellular DNA;    Pantoea agglomerans;    stress resistance;    symplasmata;   

DOI  :  10.2323/jgam.2018.03.002

学科分类：微生物学和免疫学

来源: Applied Microbiology, Molecular and Cellulrar Biosciences Research Foundation

【 摘 要 】

Extracellular DNA (eDNA) is an important polymeric substance that plays essential roles in cell aggregation and nutrient provision for the sessile bacteria. eDNA in bacterial biofilms was extensively studied. Here we found that eDNA also exists in symplasmata, a bacterial cell aggregate, which is different to a biofilm, in the rice enophyte Pantoea agglomerans YS19. We found that exogenous eDNA enhanced the formation and stability of symplasmata significantly, and that, exogenous eDNA also improved the stress resistance and colonization ability of the bacterium on host rice. These results strongly indicate novel roles of the eDNA in Pantoea agglomerans YS19, showing its special relation to the stress-resistance and endophyte-host association of the strain.

【 授权许可】

Unknown