Abstract
Four diverse strains of Agrobacterium tumefaciens (C58, Ach5, GV3111, and A281) were capable of inducing tumors at a high frequency on inoculated stems of lentil (Lens culinaris Medik. cultivar Laird) in vivo, and on excised shoot apices in vitro. GV3111 and Ach5 produced the largest and heaviest tumors in vivo, while A281 produced the heaviest tumors in vitro. Tumor formation and opine production are indicative of plant cell transformation and tumors produced appropriate opines: nopaline (C58), octopine (Ach5 and GV3111), and agropine and mannopine (A281). Southern analysis of DNA from a tumor line produced by strain C58 showed that a T-DNA fragment had been transferred into the lentil genome.
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