Agrobacterium rhizogenes-mediated transformation of Picrorhiza kurroa Royle ex Benth.: establishment and selection of superior hairy root clone View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2007-08-03

AUTHORS

Praveen Chandra Verma, Laiq ur Rahman, Arvind Singh Negi, Dharm Chand Jain, S. P. S. Khanuja, Suchitra Banerjee

ABSTRACT

A protocol for induction and establishment of Agrobacterium rhizogenes-mediated hairy root cultures of Picrorhiza kurroa was developed through optimization of the explant type and the most suitable bacterial strain. The infection of leaf explants with the LBA9402 strain resulted in the emergence of hairy roots at 66.7% relative transformation frequency. Nine independent, opine and TL-positive hairy root clones were studied for their growth and specific glycoside (i.e., kutkoside and picroside I) productivities at different growth phases. Biosynthetic potentials for the commercially desirable active constituents have been expressed by all the tested hairy root clones, although distinct inter-clonal variations could be noted in terms of their quantity. The yield potentials of the 14-P clone, both in terms of biomass as well as individual glycoside contents (i.e., kutkoside and picroside I), superseded that of all other hairy root clones along with the non-transformed, in vitro-grown control roots of P. kurroa. The present communication reports the first successful establishment, maintenance, growth and selection of superior hairy root clone of Picrorhiza kurroa with desired phyto-molecule production potential, which can serve as an effective substitute to its roots and thereby prevent the indiscriminate up-rooting and exploitation of this commercially important, endangered medicinal plant species. More... »

PAGES

169-174

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s11816-007-0029-0

DOI

http://dx.doi.org/10.1007/s11816-007-0029-0

DIMENSIONS

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