Optimal transformation occurs when cells are harvested in early to mid log phase.
KYRT1 is currently available for research purposes. Bush, A. L., and S.G. Pueppke. Characterization of an unusual new Agrobacterium tumefaciens strain from Chrysanthemum moriflorium Ram. Hirsch, P.R., and J.E. Berenger. 1984. Kovacs, L., and S.G. Pueppke.