alexa Over-expression of Arginine Decarboxylase Gene in Tapetal Tissue Results in Male Sterility in Tomato Plants | OMICS International | Abstract
ISSN: 2168-9296

Cell & Developmental Biology
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Research Article

Over-expression of Arginine Decarboxylase Gene in Tapetal Tissue Results in Male Sterility in Tomato Plants

Soumen Nandy, Ranjita Sinha and Manchikatla V Rajam*
Plant Polyamine, Transgenic and RNAi Research Laboratory, Department of Genetics, University of Delhi South Campus, India
*Corresponding Author : MV Rajam
Plant Polyamine, Transgenic and RNAi Research Laboratory
Department of Genetics, University of Delhi South Campus
Benito Juarez Road, New Delhi 110021, India
Fax: 91-1124112437
E-mail: [email protected]
Received May 23, 2013; Accepted May 24 2013; Published May 27, 2013
Citation: Nandy S, Sinha R, Rajam MV (2013) Over-expression of Arginine Decarboxylase Gene in Tapetal Tissue Results in Male Sterility in Tomato Plants. Cell Dev Biol 2:117. doi:10.4172/2168-9296.1000117
Copyright: © 2013 Nandy S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Homeostasis of cellular Polyamines (PAs) is very important for proper growth and development of living organisms. Development of male sex organ and gametophyte in plants is a complex process involving many known and unknown pathways. PAs are actively involved in the development of anther and pollen. In the present study, oat arginine decarboxylase (ADC) gene has been over-expressed in tapetum of tomato using tapetum-specific TA29 promoter to perturb the PA homeostasis in order to see its implication on male fertility. Tapetum-specific ADC overexpression resulted in PA accumulation, mainly in free and bound fractions in the anther of transgenics. Transgenic lines displayed abnormal pollen and tapetum development. Pollen grains were aborted and distorted in morphology and tapetum showed premature degeneration in ADC transgenics. These transgenics failed to set seeds, but cross pollination with normal pollen from wild type plants restored the seed setting indicating that s ADC over-expression did not affect female fertility. ADC over-expression also did not affect the growth and morphology of transgenics. The present study suggests that the excess of PAs in anther is lethal for pollen and tapetum development and overexpression of ADC gene can be an effective approach for the engineering of male sterility in plants.

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