Abstract
Effect of growing seedling, seeds and seedlings extracts from seven leguminous plants (
Pisum sativum, Vigna radiata, Vigna mungo, Cajanus cajan, Lentil culinaris, Cicer arietinum
and
Trigonella foenum graecum
) were screened for their ability to influence quorum sensing controlled pigment production in
Chromobacterium violaceum
indicator strains (CV12472 and CVO26). Germinating seedling and seedling extracts of only
P. sativum
(pea) showed inhibition of violacein production. Interestingly, the
T. foenum graecum
(fenugreek) seed extracts enhances the pigment production. Quorum sensing regulated swarming motility in
Pseudomonas aerugionsa
PAO1 was reduced by pea seedling extract while enhanced by the fenugreek seed extracts. These findings suggest that plant metabolites of some legumes interact actively with bacterial quorum sensing and could modulate its associated functions.