Overexpression of the soybean GmWNK1 altered the sensitivity to salt and osmotic stress in Arabidopsis

Yingxiang Wang, Haicui Suo, Chuxiong Zhuang, Hong Ma, Xiaolong Yan

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The WNK (With No Lysine K) serine-threonine kinases have been shown to be osmosensitive regulators and are critical for cell volume homeostasis in humans. We previously identified a soybean root-specific WNK homolog, GmWNK1, which is important for normal late root development by fine-tuning regulation of ABA levels. However, the functions of WNKs in plant osmotic stress response remains uncertain. In this study, we generated transgenic Arabidopsis plants with constitutive expression of GmWNK1. We found that these transgenic plants had increased endogenous ABA levels and altered expression of ABA-responsive genes, and exhibited a significantly enhanced tolerance to NaCl and osmotic stresses during seed germination and seedling development. These findings suggest that, in addition to regulating root development, GmWNK1 also regulates ABA-responsive gene expression and/or interacts with other stress related signals, thereby modulating osmotic stress responses. Thus, these results suggest that WNKs are members of an evolutionarily conserved kinase family that modulates cellular response to osmotic stresses in both animal and plants.

Original languageEnglish (US)
Pages (from-to)2260-2267
Number of pages8
JournalJournal of Plant Physiology
Volume168
Issue number18
DOIs
StatePublished - Dec 15 2011

Fingerprint

Osmoregulation
Osmotic Pressure
osmotic stress
Soybeans
Arabidopsis
salt stress
Salts
Genetically Modified Plants
soybeans
Lysine
stress response
lysine
phosphotransferases (kinases)
Protein-Serine-Threonine Kinases
Germination
Seedlings
Cell Size
Seeds
Homeostasis
Phosphotransferases

All Science Journal Classification (ASJC) codes

  • Physiology
  • Agronomy and Crop Science
  • Plant Science

Cite this

Wang, Yingxiang ; Suo, Haicui ; Zhuang, Chuxiong ; Ma, Hong ; Yan, Xiaolong. / Overexpression of the soybean GmWNK1 altered the sensitivity to salt and osmotic stress in Arabidopsis. In: Journal of Plant Physiology. 2011 ; Vol. 168, No. 18. pp. 2260-2267.
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Overexpression of the soybean GmWNK1 altered the sensitivity to salt and osmotic stress in Arabidopsis. / Wang, Yingxiang; Suo, Haicui; Zhuang, Chuxiong; Ma, Hong; Yan, Xiaolong.

In: Journal of Plant Physiology, Vol. 168, No. 18, 15.12.2011, p. 2260-2267.

Research output: Contribution to journalArticle

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