Title |
Against friend and foe: Type 6 effectors in plant-associated bacteria |
Author |
Choong-Min Ryu |
Address |
Molecular Phytobacteriology Laboratory, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Republic of Korea |
Bibliography |
Journal of Microbiology, 53(3),201-208, 2015,
|
DOI |
10.1007/s12275-015-5055-y
|
Key Words |
type VI secretion system, biofilm, pathogenesis,
effector, PGPR |
Abstract |
Bacterial secretion systems play critical roles in communication
with neighboring bacteria and in the modulation of
host immune responses via the secretion of small proteins
called effectors. Several secretion systems have been identified
and these are denoted types I-II. Of these, the type VI
secretion system (T6SS) and its effectors were only recently
elucidated. Most studies on the role and significance of the
T6SS and its effectors have focused on human pathogens.
In this review, type 6 effectors from plant-associated beneficial
and pathogenic bacteria are discussed, including effectors
from Agrobacterium tumefaciens, Dickeya dadanti, Rhizobium
leguminosarum, Pectobacterium atroseptium, Ralstonia
solanacearum, Pseudomonas syringae, Pseudomonas
fluorescens, and Pseudomonas protegens. Type 6 effectors act
in symbiosis, biofilm formation, virulence, and interbacterial
competition. Understanding the impact of type 6 effectors
on pathogenesis will contribute to the management of bacterial
pathogens in crop plants by allowing the manipulation
of intra and inter-specific interactions. |