Literature DB >> 12827434

Efficient transformation of Medicago truncatula cv. Jemalong using the hypervirulent Agrobacterium tumefaciens strain AGL1.

M Chabaud1, F de Carvalho-Niebel, D G Barker.   

Abstract

The efficiency of Agrobacterium tumefaciens transformation of the model legume Medicago truncatula cv. Jemalong (genotype 2HA) was evaluated for strains LBA 4404, C58pMP90, C58pGV2260 and AGL1. Binary vectors carrying promoter- gus/ gfp reporter gene fusions and the nptII gene as selectable marker were used for plant in vitro transformation/regeneration. The highest transformation efficiency was obtained with the disarmed hypervirulent strain AGL1 (Ti plasmid TiBo542), for which the percentage of explants forming kanamycin (Km)-resistant calli was double that obtained with each of the other three strains. In addition, we were able to reduce the time necessary for plant regeneration using AGL1, with 24% of the explants generating Km-resistant transgenic plantlets within only 4-5 months of culture. Transgene expression in planta was analysed and found to be conserved in the T(1) descendents.

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Year:  2003        PMID： 12827434     DOI： 10.1007/s00299-003-0649-y

Source DB:  PubMed          Journal:  Plant Cell Rep        ISSN： 0721-7714            Impact factor:   4.570


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