Plant biology

A Busy Gα Subunit

Science's STKE  19 Jun 2001:
Vol. 2001, Issue 87, pp. tw6
DOI: 10.1126/stke.2001.87.tw6

A typical animal genome contains several genes encoding G protein α subunits, but the Arabidopsis genome appears to encode just one. Two reports show that this one Gα is busy regulating physiological functions in plants. Wang et al. found that Gα mediates abscisic acid regulation of stomatal pore size, thus affecting water conservation in the plant. Ullah et al. show that the same protein is involved in regulation of cell proliferation. Ellis and Miles provide a Perspective on the articles.

X.-Q. Wang, H. Ullah, A. M. Jones, S. M. Assmann G protein regulation of ion channels and abscisic acid signaling in Arabidopsis guard cells. Science 292, 2070-2072 (2001). [Abstract] [Full Text]

H. Ullah, J.-G. Chen, J. C. Young, K.-H. Im, M. R. Sussman, A. M. Jones, Modulation of cell proliferation by heterotrimeric G protein in Arabidopsis. Science 292, 2066-2069 (2001). [Abstract] [Full Text]

B. E. Ellis, G. P. Miles, One for all? Science 292, 2022-2023 (2001). [Full Text]