@article {977, title = {Hairy Root Technology: Effect of Etiolation on Datura sp. Transgenic Root Induction and Hyoscyamine Production}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {September 2019}, pages = {991-995}, type = {Original Article}, chapter = {991}, abstract = {

Introduction: Hyoscyamine, because of its medicinal properties, is an important tropane alkaloid. In order to implement a biotechnological process for its production, hairy roots of Datura species resulting from genetic transformation by Agrobacterium rhizogenes A4 strain have been the subject of this work. In the in vitro alkaloids production programs, optimization of the transformation is a crucial step for obtaining a large number of root lines allowing the selection of efficient lines. Methods: The conditions for hairy roots induction were explored by studying the effect of Datura sp. in vitro seedling etiolation on the genetic transformation. The first step was the establishment of Datura in vitro plantlet cultures followed by the hairy roots induction with A4 strain of A. rhizogenes. The confirmation of the genetic transformation was performed by polymerase chain reaction (PCR) analysis of rolB gene in the roots. After hyoscyamine extraction, it was analyzed (quantitatively and qualitatively) by gas chromatography. Results: 343 root lines were obtained in total, 96 root lines from non-etiolated Datura in vitro seedlings and 247 root lines from etiolated in vitro plantlets. After the selection of six transgenic root lines, tow root lines from each species (D. tramonium, D. tatula and D. innoxia), one from non-etiolated in vitro plantlet and one from etiolated in vitro plantlet, the most hyoscyamine content was 8.43 mg/g D.W. obtained with D. tatula etiolated in vitro seedling. Conclusion: The etiolated in vitro plantlets seem more favorable to hairy roots induction.

}, keywords = {Datura sp., Etiolation, Gas chromatography, Hairy roots, Hyoscyamine}, doi = {10.5530/pj.2019.11.156}, author = {Boualem HARFI and Lakhdar KHELIFI} } @article {229, title = {GC-MS Analysis of Ethyl Acetate Extract of Whole Plant of Rostellularia diffusa}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {December 2016}, pages = {70-72}, type = {Original Article}, chapter = {70}, abstract = {

Introduction: To identify the various phyto constituents present in the unexplored plant Rostellularia diffusa (Willd.) by using gas chromatography and mass spectrometry. Methods: The whole plant of Rostellularia diffusa was extracted with ethyl acetate at room temperature for 72 h. The concentrated extract was subjected to GCMS analysis to detect the phyto constituents. Results: Totally 40 compounds were identified and the chromatograph showed 40 peaks with 40 individual compounds. The major constituents were identified in the extract were 16-Hentriacontanone (22.59\%), Hexadecanoic acid (11.23\%), Stigmast-5-en-3-ol (6.78\%), 9-Octadecenoic acid (6.30\%) and many other compounds were identified as low level. This preliminary study gives an idea to isolate the major active constituents present in the plant and also helps to develop potential pharmacologically active compounds

}, keywords = {Bioactive compounds, Gas chromatography, Mass spectrometry, phytosterol., Rostellularia diffusa}, doi = {10.5530/pj.2017.1.13}, author = {Mohamed Saleem Thattakudian Sheik Uduman and Prema Rathinam and Yogendrachari Karuru and Gangadhar Obili and Gopinath Chakka and Ashok Kumar Janakiraman} }