作者：Pascale Rossignol , Vladimir Orbovic , Vivian F. Irish
作者单位：Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06520-8104 USA,Citrus Research and Education Center, University of Florida, 700 Experiment Station Road, Lake Alfred, FL 33850 USA, Department of Ecology and
摘要：Inducible gene expression systems, in which the level or timing of activity of a gene of interest can be controlled exogenously, are an effective means to assess gene function. However, such systems have not been widely employed in crop plants. Here we show that the glucocorticoid receptor (GR)-based inducible gene expression system functions in Citrange (Citrus sinensis x C. trifoliata) plants. We generated transgenic Citrange plants containing a two component 35S::LhGR/p0p6:43-glucuronidase (GUS) system (Wielopolska et al. (2005) Plant Biotechnol. J. 3, 583), in which the synthetic transcription factor, LhGR, is glucocorticoid-inducible and can activate the pOp6 promoter driving expression of the 13-glucuronidase (GUS) reporter gene. We describe a method for inducing LhGR activity using the synthetic glucocorticoid dexamethasone (DEX) in transgenic Citrange. With the advent of transgenic approaches to engineer new traits in Citrus, control of transgene activity will be essential to realize the full potential of such manipulations. The method we describe here is likely to be of general use in many Citrus cultivars to temporally control the activity of introduced transgenes. (C) 2014 Elsevier B.V. All rights reserved.
关键词：Citrus,Transgenic,Inducible,LhGR,Dexamethasone,ˇ-Glucuronidase expression
文献注录：Pascale Rossignol , Vladimir Orbovic , Vivian F. Irish . A dexamethasone-inducible gene expression system is active in Citrus plants [J]. Scientia Horticulturae. 2014: 47-53.
报/刊名：《Scientia Horticulturae》，发表于2014
文献类型： [J]
页码：第 47-53 页 / 共7 页