Title: Inhibition of Botrytis cinerea spores by bacteria on the surface of chrysanthemum leaves
Abstract: Spores of Botrytis cinerea exhibited poor germination and growth in water drops on the surface of chrysanthemum leaves. The presence of B. cinerea spores in water drops placed on chrysanthemum leaves, or on plastic Petri dishes previously exposed to the air under chrysanthemum plants, resulted in an increased in the number of bacteria together with an inhibition of germination of spores added to the drops after their removal from the leaf. After separating the bacteria from the drops there was a stimulation of germination and growth of test spores. Re-addition of the bacteria resulted in a return of the inhibition. Of five isolates of bacteria from spore drops one caused marked reduction in the length of germ tubes of test spores. The results indicate that bacteria sedimenting on to leaves from the air could have an effect on the resistance of chrysanthemum to B. cinerea. There was no evidence of antifungal substances produced by the leaves or that phytoalexins were formed in response to spores of B. cinerea.
Publication Year: 1971
Publication Date: 1971-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 54
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