کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1947252 1537324 2006 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Molecular characterization of a bHLH transcription factor involved in Arabidopsis abscisic acid-mediated response
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Molecular characterization of a bHLH transcription factor involved in Arabidopsis abscisic acid-mediated response
چکیده انگلیسی

The suppression subtractive hybridization (SSH) method was used to isolate abscisic acid (ABA)-regulated genes in Arabidopsis. We report that the AtAIG1 gene is up-regulated by ABA and the AtAIG1 encodes a basic/helix–loop–helix (bHLH)-type transcription factor in Arabidopsis. The AtAIG1 was targeted into nucleus and bound to the E-box–DNA sequence, which is found in the promoter regions of many ABA-responsive genes. Functional analyses with the ataig1 knockout mutants revealed that the mutant plants show enhanced sensitivity to ABA. In addition, the ataig1 plants showed reduced expression of ABA-responsive genes, such as RD29A and RD22. Thus, these functional analyses suggest that the AtAIG1 protein plays an important role in ABA-mediated signal transduction pathway.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression - Volume 1759, Issues 3–4, March–April 2006, Pages 191–194
نویسندگان
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