N-(3-Oxooctanoyl)-DL-homoserine lacton is a member of N-Acyl homoserine lactone (AHL) from gram-negative bacteria, with stereochemistry-dependent growth regulatory activity for roots ^[1]. In Vitro: The S enantiomer of N-(3-Oxooctanoyl)-DL-homoserine lacton increases sprouting of roots more effectively than the R enantiomer in sugar cane^[1].
Both the R and S enantiomers let to stretch root cells^[1].