The whole-genomic gene-expression changes of maize (Zea mays L.) plants in response to water-deficit stress at the heading stage have not been previously studied. The present work utilized a maize oligonucleotide array (‘57K’, ~57000 sequences; http://www.maizearray.org/) representing more than 30000 unique genes, to profile transcriptome changes in maize leaves subjected to 1d (day) and 7d water-deficit stress. After 1d and 7d water-stress treatment, 195 and 1008 differential genes were identified respectively. One-third of 1d-water-stress-induced genes had known or putative functions in various cellular signalling pathways, indicating that signal-transduction-related genes play important roles in the early responses of maize leaves to water stress. The 7d-stress-regulated genes were involved in a broad range of cellular and biochemical activities. The most notable genes may function in compatible osmolyte metabolism, particularly in proline, sucrose, trehalose and raffinose metabolism in the leaves. The present study provided a valuable starting point for further elucidation of molecular mechanisms in the drought tolerance of maize plants.
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Research Article|
June 27 2008
Differential gene expression analysis of maize leaf at heading stage in response to water-deficit stress
Guidong Yue;
Guidong Yue
1
1School of Life Sciences, Shandong University, 27 Shanda South Road, Jinan 250100, People's Republic of China
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Yunlong Zhuang;
Yunlong Zhuang
1
1School of Life Sciences, Shandong University, 27 Shanda South Road, Jinan 250100, People's Republic of China
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Zhaoxia Li;
Zhaoxia Li
1School of Life Sciences, Shandong University, 27 Shanda South Road, Jinan 250100, People's Republic of China
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Li Sun;
Li Sun
1School of Life Sciences, Shandong University, 27 Shanda South Road, Jinan 250100, People's Republic of China
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Juren Zhang
Juren Zhang
2
1School of Life Sciences, Shandong University, 27 Shanda South Road, Jinan 250100, People's Republic of China
2To whom correspondence should be addressed ([email protected]).
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Publisher: Portland Press Ltd
Received:
November 16 2007
Revision Received:
February 27 2008
Accepted:
April 21 2008
Accepted Manuscript online:
April 21 2008
Online ISSN: 1573-4935
Print ISSN: 0144-8463
© The Authors Journal compilation © 2008 Biochemical Society
2008
Biosci Rep (2008) 28 (3): 125–134.
Article history
Received:
November 16 2007
Revision Received:
February 27 2008
Accepted:
April 21 2008
Accepted Manuscript online:
April 21 2008
Citation
Guidong Yue, Yunlong Zhuang, Zhaoxia Li, Li Sun, Juren Zhang; Differential gene expression analysis of maize leaf at heading stage in response to water-deficit stress. Biosci Rep 1 June 2008; 28 (3): 125–134. doi: https://doi.org/10.1042/BSR20070023
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