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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Expression pattern of genes encoding nitrate and ammonium assimilating enzymes in Arabidopsis thaliana exposed to short term NaCl stress
Journal of Plant Physiology, Volume 170, No. 2, Year 2013
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Description
Key steps in nitrate nutrition and assimilation were assessed over two weeks in control and 100. mM NaCl-exposed Arabidopsis thaliana (Columbia) plants. The data showed that NaCl stress lowered nitrate contents in both leaves and roots. While NaCl stress decreased ammonium contents in leaves, it increased the contents in roots at the end of treatment. A survey of transcript levels of NIA1 (At1g77760) and NIA2 (At1g37130) and nitrate reductase (NR, EC 1.6.1.6) activity in the leaves and roots suggested a major role of NIA2 rather than NIA1 in the regulation of NR by salt stress. A drop in mRNA levels for GLN2 (At5g35630) and GLN1;2 (At1g66200) by salt was associated with a similar inhibition of glutamine synthetase (GS, EC 6.3.1.2) activity in the leaves. In the roots, NaCl stress was found to enhance mRNA levels of GLN2 and cytosolic-encoding genes (GLN1;1 (At5g37600) and GLN1;2). © 2012 Elsevier GmbH.
Authors & Co-Authors
Debouba, Mohamed
Tunisia, Tunis
Université de Tunis el Manar, Faculté Des Sciences de Tunis
Tunisia, Gabes
Université de Gabès
Dguimi, Houda Maaroufi
Tunisia, Tunis
Université de Tunis el Manar, Faculté Des Sciences de Tunis
Ghorbel, Mohamed Habib
Tunisia, Tunis
Université de Tunis el Manar, Faculté Des Sciences de Tunis
Gouia, Houda
Tunisia, Tunis
Université de Tunis el Manar, Faculté Des Sciences de Tunis
Suzuki, Akira
France, Versailles
Institut Jean-pierre Bourgin
Statistics
Citations: 34
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1016/j.jplph.2012.09.011
ISSN:
01761617
Research Areas
Food Security
Study Design
Cross Sectional Study
Study Approach
Quantitative