Cloning and Characterization of 5' Flanking Regulatory Sequences of AhLEC1B Gene from Arachis Hypogaea L.: e0139213

Cloning and Characterization of 5' Flanking Regulatory Sequences of AhLEC1B Gene from Arachis Hypogaea L.: e0139213

LEAFY COTYLEDON1 (LEC1) is a B subunit of Nuclear Factor Y (NF-YB) transcription factor that mainly accumulates during embryo development. We cloned the 5' flanking regulatory sequence of AhLEC1B gene, a homolog of Arabidopsis LEC1, and analyzed its regulatory elements using online software. To...

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Veröffentlicht in:PloS one 2015-01, Vol.10 (10)
Hauptverfasser: Tang, Guiying, Xu, Pingli, Liu, Wei, Liu, Zhanji, Shan, Lei
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Liu, Wei
Liu, Zhanji
Shan, Lei
description LEAFY COTYLEDON1 (LEC1) is a B subunit of Nuclear Factor Y (NF-YB) transcription factor that mainly accumulates during embryo development. We cloned the 5' flanking regulatory sequence of AhLEC1B gene, a homolog of Arabidopsis LEC1, and analyzed its regulatory elements using online software. To identify the crucial regulatory region, we generated a series of GUS expression frameworks driven by different length promoters with 5' terminal and/or 3' terminal deletion. We further characterized the GUS expression patterns in the transgenic Arabidopsis lines. Our results show that both the 65bp proximal promoter region and the 52bp 5' UTR of AhLEC1B contain the key motifs required for the essential promoting activity. Moreover, AhLEC1B is preferentially expressed in the embryo and is co-regulated by binding of its upstream genes with both positive and negative corresponding cis-regulatory elements.
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subjects Arabidopsis
Arachis hypogaea
title Cloning and Characterization of 5' Flanking Regulatory Sequences of AhLEC1B Gene from Arachis Hypogaea L.: e0139213
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