NDLI: Characterization of a wheat (Triticum aestivum L.) expansin gene, TaEXPB23, involved in the abiotic stress response and phytohormone regulation.

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Characterization of a wheat (Triticum aestivum L.) expansin gene, TaEXPB23, involved in the abiotic stress response and phytohormone regulation.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Han, Yang yang Li, Ai xiu Li, Feng Zhao, Mei rong Wang, Wei
Description	Author Affiliation: Han Yy ( State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Tai'an, Shandong 271018, PR China.)
Abstract	Expansins are proteins that are generally accepted to be key regulators of cell wall extension and plant growth. We examined the expression pattern of TaEXPB23, a wheat (Triticum aestivum L.) expansin gene, under exogenous phytohormone and abiotic stress treatments. In addition, we evaluated its function in the tolerance to salt stress and high temperature (HT) by overexpressing it in transgenic tobacco plants. In subcellular localization assays, TaEXPB23 localized to the cell wall. Expression analysis demonstrated that the transcription pattern of TaEXPB23 corresponded to wheat coleoptile growth. Real-time RT-PCR analysis revealed that TaEXPB23 transcript expression was upregulated by exogenous methyl jasmonate (MeJA) and salt stress, but downregulated by exogenous gibberellins (GA3), ethylene (ET), indole-3-acetic acid (IAA) and -naphthlcetic acid (NAA). Overexpression of TaEXPB23 in tobacco (tabacum) conferred tolerance to salt stress by enhancing water retention ability (WRA) and decreasing osmotic potential (OP). However, transgenic plants overexpressing TaEXPB23 did not show any improvement in the tolerance to HT stress. These results suggested that TaEXPB23 is regulated by phytohormones and is involved in the regulation of salt stress tolerance.
File Format	HTM / HTML
ISSN	09819428
Volume Number	54
e-ISSN	18732690
Journal	Plant Physiology and Biochemistry
Language	English
Publisher	Elsevier
Publisher Date	2012-05-01
Publisher Place	France
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Botany Discipline Biochemistry Adaptation, Physiological Genetics Genes, Plant Plant Growth Regulators Metabolism Plant Proteins Salt-tolerance Stress, Physiological Triticum Hot Temperature Osmosis Plants, Genetically Modified Sodium Chloride Adverse Effects Tobacco Growth & Development Up-regulation Water Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Genetics Physiology Plant Science

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Drought tolerance through over-expression of the expansin gene TaEXPB23 in transgenic tobacco.

Wheat TaSP gene improves salt tolerance in transgenic Arabidopsis thaliana.

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Physiological, Biochemical, Epigenetic and Molecular Analyses of Wheat (Triticum aestivum) Genotypes with Contrasting Salt Tolerance

Characterization of a wheat (Triticum aestivum L.) expansin gene, TaEXPB23, involved in the abiotic stress response and phytohormone regulation.

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Drought tolerance through over-expression of the expansin gene TaEXPB23 in transgenic tobacco.

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Characterization of a wheat (Triticum aestivum L.) expansin gene, TaEXPB23, involved in the abiotic stress response and phytohormone regulation.

Overexpression of TaNHX3, a vacuolar Naâº/Hâº antiporter gene in wheat, enhances salt stress tolerance in tobacco by improving related physiological processes.