PMID: 11607640Mar 5, 1996Paper

Close correspondence between the action spectra for the blue light responses of the guard cell and coleoptile chloroplasts, and the spectra for blue light-dependent stomatal opening and coleoptile phototropism

Proceedings of the National Academy of Sciences of the United States of America
M A QuiñonesEduardo Zeiger

Abstract

Fluorescence spectroscopy was used to characterize blue light responses from chloroplasts of adaxial guard cells from Pima cotton (Gossypium barbadense) and coleoptile tips from corn (Zea mays). The chloroplast response to blue light was quantified by measurements of the blue light-induced enhancement of a red light-stimulated quenching of chlorophyll a fluorescence. In adaxial (upper) guard cells, low fluence rates of blue light applied under saturating fluence rates of red light enhanced the red light-stimulated fluorescence quenching by up to 50%. In contrast, added blue light did not alter the red light-stimulated quenching from abaxial (lower) guard cells. This response pattern paralleled the blue light sensitivity of stomatal opening in the two leaf surfaces. An action spectrum for the blue light-induced enhancement of the red light-stimulated quenching showed a major peak at 450 nm and two minor peaks at 420 and 470 nm. This spectrum matched closely an action spectrum for blue light-stimulated stomatal opening. Coleoptile chloroplasts also showed an enhancement by blue light of red light-stimulated quenching. The action spectrum of this response, showing a major peak at 450 nm, a minor peak at 470 nm, and a shoulder at 4...Continue Reading

References

Jan 1, 1988·Proceedings of the National Academy of Sciences of the United States of America·E E SerranoS Hagiwara
Jan 1, 1993·Annual Review of Cell Biology·S M Assmann
Sep 1, 1958·Plant Physiology·W Shropshire, R B Withrow

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Citations

Dec 28, 1999·Annual Review of Cell and Developmental Biology·W R Briggs, E Huala
Nov 11, 1999·Proceedings of the National Academy of Sciences of the United States of America·G BaumA J Trewavas
Jul 21, 1999·Proceedings of the National Academy of Sciences of the United States of America·J M ChristieW R Briggs
Jun 13, 2002·Physiologia Plantarum·Gordon I. McIntyre
Jun 23, 2009·Journal of Plant Physiology·Beatriz Fernández-MarínJosé Ignacio García-Plazaola
Nov 20, 2002·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·T A MooreD Gust
Feb 20, 2003·Journal of Bacteriology·Wing-On NgDevaki Bhaya
Jan 1, 2010·The Arabidopsis Book·Ullas V PedmaleEmmanuel Liscum
Jan 1, 2006·Functional Plant Biology : FPB·Fabio PaolicchiRoberto Lorenzi
Mar 9, 1999·Plant Physiology·S M Assmann, K i Shimazaki

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