Open AccessZoosporic plant pathogens produce bacterial autoinducer‐2 that affects Vibrio harveyi quorum sensing
Author(s) -
Kong Ping,
Lee Bobby W.K.,
Zhou Zhaohui Sunny,
Hong Chuanxue
Publication year - 2010
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.2009.01861.x
Subject(s) - zoospore , oomycete , vibrio harveyi , biology , microbiology and biotechnology , quorum sensing , autoinducer , pythium , phytophthora , pythium aphanidermatum , bacteria , biofilm , vibrio , bioluminescence , botany , pathogen , spore , ecology , biological pest control , genetics
The frequent coisolation of bacteria with Phytophthora and Pythium species suggests possible interspecies communication. Zoospore‐free fluids (ZFF) from bacteria‐free and nutrient‐depleted zoospore suspensions were examined to investigate the production of autoinducer‐2 (AI‐2), a bacterial interspecies signal molecule, by zoosporic oomycetes. ZFF from Phytophthora nicotianae, Phytophthora sojae , and Pythium aphanidermatum triggered luminescence of the Vibrio harve7yi AI‐2 reporter, indicating the presence of AI‐2 in zoospore extracellular products and the potential of cross‐kingdom communication between oomycetes and bacteria. The production of AI‐2 by zoospores was confirmed by chemical assays. These results provide a new insight into the physiology and ecology of oomycetes.