期刊
ANNUAL REVIEW OF PLANT BIOLOGY
卷 57, 期 -, 页码 675-709出版社
ANNUAL REVIEWS
DOI: 10.1146/annurev.arplant.57.032905.105441
关键词
glucose; sucrose; trehalose; Arabidopsis; hexokinase; Snfl-related protein kinase
资金
- NIGMS NIH HHS [R01 GM060493] Funding Source: Medline
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R01GM060493] Funding Source: NIH RePORTER
Sugars not only fuel cellular carbon and energy metabolism but also play pivotal roles as signaling molecules. The experimental amenability of yeast as a unicellular model system has enabled the discovery of multiple sugar sensors and signaling pathways. In plants, different sugar signals are generated by photosynthesis and carbon metabolism in source and sink tissues to modulate growth, development, and stress responses. Genetic analyses have revealed extensive interactions between sugar and plant hormone signaling, and a central role for hexokinase (HXK) as a conserved glucose sensor. Diverse sugar signals activate multiple HXK-dependent and HXK-independent pathways and use different molecular mechanisms to control transcription, translation, protein stability and enzymatic activity. Important and complex roles for Snf1-related kinases (SnRKs), extracellular sugar sensors, and trehalose metabolism in plant sugar signaling are now also emerging.
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