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Genotype-independent and enhanced in planta Agrobacterium tumefaciens-mediated genetic transformation of peanut [Arachis hypogaea (L.)]

Agrobacterium infection and regeneration of the putatively transformed plant from the explant remains arduous for some crop species like peanut. Henceforth, a competent and reproducible in planta genetic transformation protocol is established for peanut cv. CO7 by standardizing various factors such...

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Published in:3 Biotech 2018-04, Vol.8 (4), p.202-202, Article 202
Main Authors: Karthik, Sivabalan, Pavan, Gadamchetty, Sathish, Selvam, Siva, Ramamoorthy, Kumar, Periyasamy Suresh, Manickavasagam, Markandan
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description Agrobacterium infection and regeneration of the putatively transformed plant from the explant remains arduous for some crop species like peanut. Henceforth, a competent and reproducible in planta genetic transformation protocol is established for peanut cv. CO7 by standardizing various factors such as pre-culture duration, acetosyringone concentration, duration of co-cultivation, sonication and vacuum infiltration. In the present investigation, Agrobacterium tumefaciens strain EHA105 harboring the binary vector pCAMBIA1301– bar was used for transformation. The two-stage selection was carried out using 4 and 250 mg l −1 BASTA ® to completely eliminate the chimeric and non-transformed plants. The transgene integration into plant genome was evaluated by GUS histochemical assay, polymerase chain reaction (PCR), and Southern blot hybridization. Among the various combinations and concentrations analyzed, highest transformation efficiency was obtained when the 2-day pre-cultured explants were subjected to sonication for 6 min and vacuum infiltrated for 3 min in Agrobacterium suspension, and co-cultivated on MS medium supplemented with 150 µM acetosyringone for 3 days. The fidelity of the standardized in planta transformation method was assessed in five peanut cultivars and all the cultivars responded positively with a transformation efficiency ranging from minimum 31.3% (with cv. CO6) to maximum 38.6% (with cv. TMV7). The in planta transformation method optimized in this study could be beneficial to develop superior peanut cultivars with desirable genetic traits.
doi_str_mv 10.1007/s13205-018-1231-1
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source Springer Nature; PubMed Central
subjects Acetosyringone
Agriculture
Agrobacterium
Agrobacterium radiobacter
Agrobacterium tumefaciens
Arachis hypogaea
Bioinformatics
Biomaterials
Biotechnology
Cancer Research
Chemistry
Chemistry and Materials Science
chimerism
coculture
crops
Cultivars
Cultivation
Explants
genetic traits
Genetic transformation
Genomes
Genotypes
Hybridization
Infiltration
Original
Original Article
Peanuts
Polymerase chain reaction
Regeneration
Sonication
Southern blotting
Stem Cells
transgenes
Transgenic plants
Vacuum
title Genotype-independent and enhanced in planta Agrobacterium tumefaciens-mediated genetic transformation of peanut [Arachis hypogaea (L.)]
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