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Sci. STKE, 15 April 2003
Vol. 2003, Issue 178, p. tw152
[DOI: 10.1126/stke.2003.178.tw152]


PLANT BIOLOGY Sweet Signals in Plants

Glucose is a nutritional component for plants; its availability supports various physiological responses. Moore et al. (see the Perspective by Frommer et al.) now show that glucose also functions as a signaling molecule to relate physiological responses such as growth, development, and senescence to photosynthetic productivity and other environmental resources. Analysis of mutant plants defective in a hexokinase enzyme shows that some of the signaling functions continue to operate even in the absence of catalytic activity for glucose processing.

B. Moore, L. Zhou, F. Rolland, Q. Hall, W.-H. Cheng, Y.-X. Liu, I. Hwang, T. Jones, J. Sheen, Role of the Arabidopsis glucose sensor HXK1 in nutrient, light, and hormonal signaling. Science 300, 332-336 (2003). [Abstract] [Full Text]

W. B. Frommer, W. X. Schulze, S. Lalonde, Hexokinase, jack-of-all-trades. Science 300, 261-263 (2003). [Summary] [Full Text]

Citation: Sweet Signals in Plants. Sci. STKE 2003, tw152 (2003).

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