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Journal of Experimental Botany, Vol. 51, No. 349, pp. 1479-1480, August 2000
© 2000 Oxford University Press

Gene Note

Abg1: a novel gene up-regulated by abscisic acid in guard cells of Vicia faba L.

Karthik Aghoram1, William H. Outlaw, Jr1,4, George W. Bates1, John Cairney2, Agustin O. Pineda1, Christopher M. Bacot1, Lloyd M. Epstein1 and Cathy W. Levenson3

1 Department of Biological Science, Florida State University, Tallahassee, FL 32306–4370, USA
2 Institute of Paper Science and Technology, 500 10th Street NW, Atlanta, GA 30318–5794, USA
3 Department of Nutrition, Food and Exercise Science and Program in Neuroscience, Florida State University, Tallahassee, FL 32306–4340, USA

Abstract

A novel gene (abg1) was isolated by differential display RT-PCR from guard cells of Vicia faba L. Abg1 transcript accumulated in guard cells that were incubated with 5 µM S(+)-ABA for 1 h. The full-length abg1 cDNA was 753 bp, which included a 513 bp coding region. The deduced 17.8 kDa protein shared sequence similarity with several desiccation-related proteins reported in plants.

Key words: Abscisic acid, guard cell, gene expression, Vicia faba.


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