STREPTOMYCES BETA-VULGARIS STRAIN, CULTURE FILTRATE, DERIVED ACTIVE COMPOUNDS AND USE THEREOF IN THE TREATMENT OF PLANTS

摘要

A method of stimulating the natural defense system of a plant utilizing an isolated strain of Streptomyces beta-vulgaris is described. The method includes administering to the plant an effective amount of the Streptomyces beta-vulgaris strain, or an active compound obtained from culturing the strain, which stimulates the expression of the plant defense genes such as PR1 and PDF1.2a.