PMID: 11607412Jul 15, 1993Paper

Phytochrome-regulated expression of the genes encoding the small GTP-binding proteins in peas

Proceedings of the National Academy of Sciences of the United States of America
K YoshidaY Sasaki

Abstract

We examined the effect of light on the mRNA levels of 11 genes (pra1-pra9A, pra9B, and pra9C) encoding the small GTP-binding proteins that belong to the ras superfamily in Pisum sativum. When the dark-grown seedlings were exposed to continuous white light for 24 hr, the levels of several pra mRNAs in the pea buds decreased: pra2 and pra3 mRNAs decreased markedly; pra4, pra6, and pra9A mRNAs decreased slightly; the other 6 pra mRNAs did not decrease. We studied the kinetics of mRNA accumulation for pra2, pra3, and pra9B in detail during white light illumination and compared them with those of the phytochrome gene and the small subunit gene of ribulose bisphosphate carboxylase: mRNA levels of pra2 and pra3 decreased in a manner similar to that of phytochrome while that of the small subunit increased as was expected. The decreases were triggered by a 2-min monochromatic red light (660 nm) irradiation. The effect of red light was reversed by subsequent exposure to far-red light, indicating an involvement of phytochrome as a photoreceptor in this light-regulated event. This work reports negative regulation of mRNA levels of small GTP-binding proteins by light, mediated by phytochrome.

References

Aug 15, 1991·Proceedings of the National Academy of Sciences of the United States of America·X LinJ C Watson
Jan 15, 1992·Proceedings of the National Academy of Sciences of the United States of America·K PalmeJ Schell
Sep 1, 1991·The Plant Journal : for Cell and Molecular Biology·S AnuntalabhochaiD Inzé
Jul 15, 1991·Proceedings of the National Academy of Sciences of the United States of America·P Van Der SluijsI Mellman
Feb 15, 1988·Biochemical and Biophysical Research Communications·B K DrobakA P Dawson

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Citations

May 9, 1995·Proceedings of the National Academy of Sciences of the United States of America·H Sano, Y Ohashi
Dec 1, 1996·Photochemistry and Photobiology·J M Staub, X W Deng
Apr 4, 2008·Plant & Cell Physiology·Reiaz Ul RehmanGian-Pietro Di Sansebastiano
Jan 5, 2002·The Journal of Biological Chemistry·Takehito InabaYukiko Sasaki

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