The NAC family transcription factor OsNAP confers abiotic stress response through the ABA pathway

Xu Chen, Yaofeng Wang, Bo Lv, Jie Li, Liqiong Luo, Songchong Lu, Xuan Zhang, Hong Ma, Feng Ming

Research output: Contribution to journalArticle

93 Scopus citations

Abstract

Plants respond to environmental stresses by altering gene expression, and several genes have been found to mediate stress-induced expression, but many additional factors are yet to be identified. OsNAP is a member of the NAC transcription factor family; it is localized in the nucleus, and shows transcriptional activator activity in yeast. Analysis of the OsNAP transcript levels in rice showed that this gene was significantly induced by ABA and abiotic stresses, including high salinity, drought and low temperature. Rice plants overexpressing OsNAP did not show growth retardation, but showed a significantly reduced rate of water loss, enhanced tolerance to high salinity, drought and low temperature at the vegetative stage, and improved yield under drought stress at the flowering stage. Microarray analysis of transgenic plants overexpressing OsNAP revealed that many stress-related genes were up-regulated, including OsPP2C06/OsABI2, OsPP2C09, OsPP2C68 and OsSalT, and some genes coding for stress-related transcription factors (OsDREB1A, OsMYB2, OsAP37 and OsAP59). Our data suggest that OsNAP functions as a transcriptional activator that plays a role in mediating abiotic stress responses in rice.

Original languageEnglish (US)
Pages (from-to)604-619
Number of pages16
JournalPlant and Cell Physiology
Volume55
Issue number3
DOIs
StatePublished - Jan 1 2014

All Science Journal Classification (ASJC) codes

  • Physiology
  • Plant Science
  • Cell Biology

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