کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2056574 1075829 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Expression pattern of genes encoding nitrate and ammonium assimilating enzymes in Arabidopsis thaliana exposed to short term NaCl stress
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Expression pattern of genes encoding nitrate and ammonium assimilating enzymes in Arabidopsis thaliana exposed to short term NaCl stress
چکیده انگلیسی

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).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Plant Physiology - Volume 170, Issue 2, 15 January 2013, Pages 155–160
نویسندگان
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