In vitro regeneration and Agrobacterium tumefaciens-mediated genetic transformation of Parkia timoriana (DC.) Merr.: a multipurpose tree legume

• Autorzy: Thangjam R. , Sahoo L.
• Języki publikacji: EN

Abstrakty

EN

In vitro regeneration of Parkia timoriana (DC.) Merr. has been achieved using cotyledonary node explants. The ability to produce multiple shoots has been evaluated using semi-solid Murashige and Skoog (MS) basal medium and Gamborg’s B-5 basal medium supplemented with various concentrations of α-naphthalene acetic acid (NAA) and 6-benzylaminopurine (BA) either in single or in combinations. The explants cultured in MS medium supplemented with combinations of 2.7 µM NAA and 11 µM BA showed the maximum frequency of multiple shoots (96.66%) formation and number of shoots per explants (6.60), respectively. For rooting, full and half strength MS medium supplemented with various concentrations of indole-3-butyric acid (IBA) and NAA were studied and the highest number of root formation was observed in fullstrength MS supplemented with 9.8 µM IBA. Using Agrobacterium tumefaciens strain EHA105 pCAMBIA2301 various optimum conditions for efficient transformation were determined by recording the percentage of GUS⁺ explants. Following the optimized conditions, the co-cultured explants were cultured on semi-solid shoot regeneration medium containing MS medium + 2.7 µM NAA + 11 µM BA + 100 mg/l kanamycin + 500 mg/l cefotaxime. After 8 weeks of culture, the regenerated shoots were rooted in rooting medium (RM) containing MS medium + 9.8 µM indole-3-butyric acid (IBA), 3% sucrose, 7.5 mg/l kanamycin and 500 mg/l cefotaxime. Successful transformation was confirmed by histochemical GUS activity of the regenerated shoots, nptII gene PCR analyses of the regenerated kanamycin resistant plantlets and Southern analysis of putative transgenic PCR⁺ Plants.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2012
• Tom: 34
• Numer: 3
• Opis fizyczny: p.1207-1215,fig.,ref.

Twórcy

autor

Thangjam R.

• Department of Biotechnology, School of Life Sciences, Mizoram University, 796004 Aizawl, Mizoram, India

autor

Sahoo L.

• Department of Biotechnology, Indian Institute of Technology Guwahati, 781039 Guwahati, Assam, India

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