HortScience (1993) 28, 1017-1019

Thomas J. Burr, Cheryl L. Reid, Barbara H. Katz, Maria Elisabetta Tagliati, Carlo Bazzi and Deborah I. Breth (1993)
Failure of Agrobacterium radiobacter strain K-84 to control crown gall on raspberry
HortScience 28 (10), 1017-1019
Abstract: Agrobacterium radiobacter (Beijerinc and van Delden) Conn strain K-84 failed to control raspberry (Rubus idaeus L.) crown gall caused by A. tumefaciens (E.F. Smith and Townsend) Conn. Agrobacterium tumefaciens strains isolated from galls on plants that had been treated with K-84 were not sensitive to agrocin 84 in vitro. These strains were isolated from 'Titan' and 'Hilton' raspberry in New York state and from 'Himbo Queen' and 'Schönemann' raspberry in Italy. Almost all strains were identified as A. tumefaciens biovar 2. Raspberry crown gall was not controlled by K-84 in three field experiments in New York state. In two of the experiments, plants were produced by micropropagation and were known to be pathogen-free. The other plant source was shown to be contaminated with the pathogen before treatment with K-84. Crown gall was not controlled either on raspberry in a greenhouse experiment or on Kalanchoe diagremintiana (Hamet. and Perrier) plants that were coinoculated with K-84 and strains of A. tumefaciens isolated from galls on raspberry.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Thomas J. Burr

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Agrobacterium tumefaciens	Raspberry/blackberry (Rubus)	Italy
	Agrobacterium tumefaciens	Raspberry/blackberry (Rubus)	U.S.A. (NE)
Rhizobium radiobacter (antagonist)	Agrobacterium tumefaciens	Raspberry/blackberry (Rubus)	U.S.A. (NE)