Plant Biotechnology
Online ISSN : 1347-6114
Print ISSN : 1342-4580
ISSN-L : 1342-4580
Short Communication
Sugar-responsive transcription factor bZIP3 affects leaf shape in Arabidopsis plants
Miho SanagiYu LuShoki AoyamaYoshie MoritaNobutaka MitsudaMiho IkedaMasaru Ohme-TakagiTakeo SatoJunji Yamaguchi
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Supplementary material

2018 Volume 35 Issue 2 Pages 167-170


Sugars are essential for plant metabolism, growth and development. Plants must therefore manage their growth and developmental processes in response to sugar availability. Sugar signaling pathways constitute a complicated molecular network and are associated with global transcriptional regulation. However, the molecular mechanisms underlying sugar signaling remain largely unclear. This study reports that the protein basic-region leucine zipper 3 (bZIP3) is a novel sugar-responsive transcription factor in Arabidopsis plants. The expression of bZIP3 was rapidly repressed by sugar. Genetic analysis indicated that bZIP3 expression was modulated by the SNF1-RELATED KINASE 1 (SnRK1) pathway. Moreover, transgenic plants overexpressing bZIP3 and dominant repressor form bZIP3-SRDX showed aberrant shaped cotyledons with hyponastic bending. These findings suggest that bZIP3 plays a role in plant responses to sugars and is also associated with leaf development.

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© 2018 The Japanese Society for Plant Cell and Molecular Biology
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