Method and compositions for use in the treatment of fireblight
AssigneeMicrolife Technics, Inc.
InventorsPeter A. Vandenbergh, Anne K. Vidaver
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Abstract
A method and compositions for the treatment of fireblight disease in plants are described. The compositions include a phage for Erwinia amylovora which produces fireblight and an enzyme produced by the phage which depolymerizes a polysaccharide produced by Erwinia amylovora which is the cause of the fireblight disease. Purified enzyme preparations are described.
Claims19
A composition for the treatment of fireblight in plants which is caused by an Erwinia amylovora having the characteristic of producing a capsular polysaccharide responsible for the fireblight in the plants which comprises in admixture:
- (a) a phage which lyses the Erwinia amylovora;
- and
- (b) an isolated polysaccharide depolymerase enzyme produced by a phage which lyses the Erwinia amylovora, wherein the composition contains at least 10.sup.6 pfu of the phage per gram of the composition.
The method of treatment of fireblight in affected plants caused by an Erwinia amylovora having the characteristic of producing a capsular polysaccharide responsible for the fireblight in the plants which comprises applying to the plants an effective amount of a composition which comprises:
- (a) a phage which lyses an Erwinia amylovora;
- and
- (b) a depolymerase enzyme for depolymerizing the polysaccharide produced by a phage which lyses the Erwinia amylovora.
Dependencies are inferred from the claim text.