Oryza sativa rice plants contain molecules that activate different quorum-sensing N-acyl homoserine lactone biosensors and are sensitive to the specific AiiA lactonase.
Gram-negative bacteria most often use N-acyl homoserine lactones (AHLs) as intercellular quorum-sensing signal molecules. In this study, it was demonstrated that rice plants contain AHL mimic molecules that are very sensitive to the highly specific AiiA lactonase enzyme and can activate three different AHL bacterial biosensors, indicating that the compounds have a homoserine lactone structure and could be AHLs. The possible source and biological significance of this finding are discussed.
Degrassi
Giuliano
G
Bacteriology Group, International Centre for Genetic Engineering & Biotechnology, Padriciano, Trieste, Italy.
Devescovi
Giulia
G
Solis
Renando
R
Steindler
Laura
L
Venturi
Vittorio
V
D015107:4-Butyrolactone / Q000031:analogs & derivatives* / Q000378:metabolism; D001426:Bacterial Proteins / Q000378:metabolism; D015374:Biosensing Techniques; D004926:Escherichia coli / Q000378:metabolism; D015964:Gene Expression Regulation, Bacterial; D008666:Metalloendopeptidases / Q000378:metabolism*; D012275:Oryza / Q000737:chemistry* / Q000378:metabolism / Q000382:microbiology*; D018515:Plant Leaves / Q000737:chemistry / Q000378:metabolism; D018547:Plant Stems / Q000737:chemistry / Q000378:metabolism; D053038:Quorum Sensing; D015398:Signal Transduction
D001426:Bacterial Proteins; C088386:homoserine lactone; D008666:Metalloendopeptidases; D015107:4-Butyrolactone