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Title: Expression of a WIPK-activated transcription factor results in increase of endogenous salicylic acid and pathogen resistance in tobacco plants
Authors: Frank Waller
Axel Müller
Kwi Mi Chung
Yun Kiam Yap
Kimiyo Nakamura
Elmar Weiler
Hiroshi Sano
Nara Institute of Science and Technology
Ruhr-Universitat Bochum
Justus Liebig University Giessen
Mahidol University
Keywords: Agricultural and Biological Sciences;Biochemistry, Genetics and Molecular Biology
Issue Date: 1-Aug-2006
Citation: Plant and Cell Physiology. Vol.47, No.8 (2006), 1169-1174
Abstract: NtWIF is a transcription factor activated upon phosphorylation by wound-induced protein kinase (WIPK) in tobacco plants. Transgenic tobacco plants overexpressing NtWIF exhibited constitutive accumulation of transcripts for pathogenesis-related genes, PR-1a and PR-2. Salicylic acid levels were 50-fold higher than those in wild-type plants. The levels of jasmonic acid and IAA did not significantly differ, while an increase of ABA upon wounding was delayed by 3 h in the transgenics. When challenged with tobacco mosaic virus, lesions developed faster and were smaller in the transgenic plants. The results suggest that NtWIF is likely to influence salicylic acid biosynthesis, being located downstream of WIPK. © The Author 2006. Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists. All rights reserved.
ISSN: 14719053
Appears in Collections:Scopus 2006-2010

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