Journal Article

Overexpression of the <i>AtmybL2</i> Gene Represses Trichome Development in <i>Arabidopsis</i>

Shinichiro Sawa

in DNA Research

Published on behalf of Kazusa DNA Research Institute

Volume 9, issue 2, pages 31-34
Published in print January 2002 | ISSN: 1340-2838
Published online January 2002 | e-ISSN: 1756-1663 | DOI: http://dx.doi.org/10.1093/dnares/9.2.31

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Leaf trichome formation is known to be regulated by the TTG, GL1, GL2, and GL3 genes in Arabidopsis. GL1 and GL3 encode proteins with Myb and bHLH domains, respectively. Overexpression of the AtmybL2 gene, which encodes a single Myb-like DNA-binding domain, repressed trichome development in transgenic Arabidopsis plants. The amount of GL2 transcription was clearly reduced in the transgenic plants. Consistent with this, overexpression of AtmybL2 decreased β-glucuronidase (GUS) activity in transgenic plants carrying a GUS-reporter gene regulated by the GL2 promoter. These findings, together with the results from our yeast two-hybrid analysis, suggest that GL3 gene function and overexpression of AtmybL2 act synergistically to inhibit trichome formation by negatively regulating GL2 expression.

Keywords: AtmybL2; trichome; Arabidopsis

Journal Article.  0 words. 

Subjects: Genetics and Genomics

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