N-hexanoyl-DL-Homoserine lactone is a bacterial quorum sensing signaling molecule that is produced by mammalian pathogenic and rhizosphere-colonizing bacteria.1,2,3 Application of N-hexanoyl-DL-homoserine lactone (60 µM) to tomato leaves suppresses the development of lesions induced by the plant pathogenic fungi B. cinerea.2 It also increases root length and shoot diameter when applied to A. thaliana seedlings in a hydroponic growth system at a concentration of 10 µM.3
1.Ngeow, Y.F., Cheng, H.J., Chen, J.W., et al.Short chain N-acylhomoserine lactone production by clinical multidrug resistant Klebsiella pneumoniae strain CSG20Sensors (Basel)13(11)15242-15251(2013) 2.Hu, Z., Shao, S., Zheng, C., et al.Induction of systemic resistance in tomato against Botrytis cinerea by N-decanoyl-homoserine lactone via jasmonic acid signalingPlanta247(5)1217-1227(2018) 3.von Rad, U., Klein, I., Dobrev, P.I., et al.Response of Arabidopsis thaliana to N-hexanoyl-??-homoserine-lactone, a bacterial quorum sensing molecule produced in the rhizospherePlanta229(1)73-85(2008)