Production of phaseollin, coumestrol and related compounds in bean leaves inoculated with Pseudomonas spp

摘要: Abstract Phaseollin accumulated in hypersenstive and susceptiblee responses of leaves bean (Phaseolus vulgaris) inoculated with Pseudomonas mors-prunorum or P. phaseolicola Races 1,2. At 100 μg/ml it did not decrease growth but prevent the saprophyte Brevibacterium linens for 3 days. The isoflavanoid coumestrol which also infected inhibited liquid media at 10 to μg/ml. About 40 μg was obtained from 1 g fresh weight hypersensitive lesions on day after inoculation. Similar concentrations were found susceptible 5 days Coumestrol occur diffusates podsinoculated treated cupric chloride (3 × 10−3 m ); a closely related compound pods chloride. untreated infiltrated heat-killed bacteria. Two unidentified compounds 0·5 times those leaves. accumulation these substances probably explains why numbers bacteria do increase 2