A myb gene required for leaf trichome differentiation in Arabidopsis is expressed in stipules.

来自 dx.doi.org

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作者：

DG Oppenheimer，PL Herman，S Shan，J Esch，MD Marks

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摘要：

The GL1 gene is required for the initiation of differentiation of hair cells (trichomes) on the crucifer, Arabidopsis thaliana. This gene has been localized to a 4.5 kb DNA fragment by molecular complementation of gl1 mutants. DNA sequence analysis has shown that the protein encoded by GL1 contains a Myb DNA-binding motif. Southern analysis and subsequence analysis of isolated lambda clones has established that GL1 is a member of an extensive myb gene family in Arabidopsis. The putative GL1 promoter directs the expression of the GUS reporter gene in non-trichome-bearing structures that appear to be stipules. This pattern of expression suggests that GL1 may control the synthesis of a diffusible signal that activates the developmental pathway for trichome differentiation.

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关键词：

Plants DNA-Binding Proteins Plant Proteins Arabidopsis Proteins Oligonucleotides Restriction Mapping Polymerase Chain Reaction Sequence Alignment Cell Differentiation Gene Expression