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A procedure has been established for Agrobacterium tumefaciens-mediated genetic transformation of Hevea brasiliensis embryogenic friable calli. Precultivation of tissues on a CaCl2-free maintenance medium dramatically enhanced the transient activity of the reporter gene, gusA encoding -glucuronidase (GUS). The increase was first noticed in highly active cells (undifferentiated or/and embryogenic),...
Abstract The influence of CaCl2 was investigated on Agrobacterium tumefaciens-mediated gene transfer in Hevea brasiliensis friable calli which are usually proliferated on maintenance medium (MM) containing 9mM CaCl2.Five A. tumefaciens strains (C58pMP90, C58pGV2260, AGL1, LBA4404 and EHA 105) and two binary vectors (pGIN and pCAMBIA2301) were tested and the strain EHA105pC2301 was selected to conduct...
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