Biologia plantarum 55:196-200, 2011 | DOI: 10.1007/s10535-011-0030-x
The effects of abiotic stresses on the NADP-dependent malic enzyme in the leaves of the hexaploid wheat
- 1 Institute of Genetic and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, P.R. China
- 2 Xinjiang Institute of Physics and Chemistry Technology, Chinese Academy of Sciences, Wulumuqi, P.R.China
- 3 Graduate University of the Chinese Academy of Sciences, Beijing, P.R.China
- 4 Institute of Life Sciences, Qingdao University of Science and Technology, Qingdao, P.R. China
- 5 Experimental and Education Technology Center, Linyi Normal University, Linyi, P.R.China
The objective of this study was to examine the effects of different abiotic stresses on the activity of an NADP-dependent malic enzyme (NADP-ME) and the corresponding gene transcription in the leaves of the hexaploid wheat (Triticum aestivum L.) The activity of the NADP-ME enzyme was increased by water stress (20 % polyethylene glycol 6000), low temperature (4 °C), darkness, salinity (200 mM NaCl), abscisic acid and salicylic acid. The transcription of the TaNADP-ME1 gene decreased in response to all of the stresses except darkness and NaCl. In addition, the transcription of TaNADP-ME2 was down-regulated by all of the tested treatments and could not be detected under dark stress.
Keywords: abscisic acid; enzyme activity; gene transcription; low temperature; salicylic acid; salinity; water stress
Received: May 31, 2009; Accepted: January 17, 2010; Published: March 1, 2011 Show citation
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