Abstract

Procedures were developed for rapid and prolific adventitious shoot regeneration of Arabidopsis thaliana (L.) Heynh ecotypes “Landsberg erect” and “C24” from cotyledon explants at 90–100% efficiency. Immature cotyledons had the highest shoot regeneration efficiency. Prolific regeneration was achieved in Murashige and Skoog medium (MS) supplemented with 0.1–0.4 mg−1 naphthalene acetic acid (NAA) and 1.0 mg−1 6-benzylaminopurine (BAP) within 2 weeks. The regenerated plants had a normal phenotype and produced fertile flowers and set seeds. The above regeneration protocol was used to develop a transformation method using disarmed strains of Agrobacterium tumefaciens strains pGV3850::pH1121 based on kanamycin (Km) selection. Transgenic shoots were produced within 2–3 weeks after inoculation. Transformation of shoots was confirmed by GUS histochemical assay, as well as southern blot hybridization.

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