title: Morphogenetic and chemical stability of long-term maintained Agrobacterium-mediated transgenic Catharanthus roseus plants.
abstract: Transgenic Catharanthus roseus plants (transgenic Dhawal [DT] and transgenic Nirmal [NT]) obtained from the Agrobacterium tumefaciens and Agrobacterium rhizognenes-mediated transformations, respectively, have been maintained in vitro for 5 years. Plants were studied at regular intervals for various parameters such as plant height, leaf size, multiplication rate, alkaloid profile and presence of marker genes. DT plant gradually lost the GUS gene expression and it was not detected in the fifth year while NT plant demonstrated the presence of genes rolA, rolB and rolC even in the fifth year, indicating the more stable nature of Ri transgene. Vindoline content in the DT was two times more than in non-transformed control plants. Alkaloid and tryptophan profiles were almost constant during the 5 years. The cluster analysis revealed that the DT plant is more close to the control Nirmal plant followed by NT plant.
authors.affiliation: a Department of Plant Biotechnology , Central Institute of Medicinal and Aromatic Plants (CIMAP), Council of Scientific and Industrial Research , PO CIMAP, Kukrail Picnic Spot Road, Lucknow 226 015 , India.
authors.forename: Priyanka
authors.initials: P
authors.lastname: Verma
authors.forename: Abhishek
authors.initials: A
authors.lastname: Sharma
authors.forename: Shamshad Ahmad
authors.initials: SA
authors.lastname: Khan
authors.forename: Ajay Kumar
authors.initials: AK
authors.lastname: Mathur
authors.forename: Karuna
authors.initials: K
authors.lastname: Shanker
mesh_terms: D060054:Agrobacterium; D000470:Alkaloids / Q000737:chemistry*; D030008:Catharanthus / Q000737:chemistry* / Q000235:genetics; D017930:Genes, Reporter; D030821:Plants, Genetically Modified / Q000737:chemistry*; D019076:Transgenes; D014364:Tryptophan / Q000737:chemistry; D014747:Vinblastine / Q000031:analogs & derivatives / Q000737:chemistry
chemical_list: D000470:Alkaloids; C009667:vindoline; D014747:Vinblastine; D014364:Tryptophan
keywords: Catharanthus roseus; ISSR; terpenoid indole alkaloids; transgenic plants