PIGMENTS FROM BEAN (Phaseolus vulgaris, L.) COAT AS INHIBITORS OF GROWING invitro OF Xanthomonas axonopodis pv. phaseoli AND Pseudomonas syringae pv. phaseolicola

Abstract

It has been known that the pigments from flowers, fruits and seeds have several functions that are involved on mechanisms that permit the plants to overcome adverse environmental conditions, principally the tolerance that they show against phytopathogenic fungy. An affect of pigments from been seeds on development of two plant pathogenic bacteria namely Xanthomonas axonopodis pv. phaseoli (X. a. pv. p.) and Pseudomonas syringae pv. phaseolicola (Ps. s. pv. p.) were studied. Inhibition of both bacteria was noted, being more marked in the case of X. a. pv. p. On separation of chemical components of each pigment it was found that they belong to different flavonoid groups and the anthocyanins were present in all the extracts.