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MS, Resmi and PJ, Vivek and EV, Soniya (2015) Over-expression of bael quinolone synthase in tobacco improves plant vigor under favorable conditions, drought, or salt stress. FEBS letters, 589 (3). pp. 332-341. ISSN 1873-3468

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Abstract

Type III polyketide synthases (PKSs) catalyze the biosynthesis of various medicinally important secondary metabolites in plants, but their role in growth and stress response is unclear. Here, we overexpressed quinolone synthase (QNS) from bael in tobacco. QNS-overexpressing plants showed an overall increase in growth, photosynthetic efficiency and chlorophyll content compared to wild type plants. Second-generation (T2) transgenic plants grew to maturity, flowered early and set viable seeds under favorable conditions without yield penalty. An increased accumulation of flavonoids, phenols and alkaloids was associated with higher tolerance to drought and salinity stress in transgenic plants. Thus, bael QNS seems to function as a positive regulator of plant growth and stress response, and could be potentially used for engineering plants tolerant to abiotic stress.

Item Type: Article
Uncontrolled Keywords: Bael; Drought stress; Over-expression; Quinolone synthase; Salt stress; Tobacco
Subjects: Plant Disease Biology & Biotechnology
Depositing User: Mrs Lathika K
Date Deposited: 29 Dec 2016 07:29
Last Modified: 24 Jan 2017 04:03
URI: http://rgcb.sciencecentral.in/id/eprint/87

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