Journal Article

The Blue Light-Specific Response of <i>Vicia faba</i> Stomata Acclimates to Growth Environment

Silvia Frechilla, Lawrence D. Talbott and Eduardo Zeiger

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 45, issue 11, pages 1709-1714
Published in print November 2004 | ISSN: 0032-0781
Published online November 2004 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pch197
The Blue Light-Specific Response of Vicia faba Stomata Acclimates to Growth Environment

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  • Biochemistry
  • Molecular and Cell Biology
  • Plant Sciences and Forestry

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Stomata in epidermal strips from growth chamber-grown Vicia faba leaves opened less in response to white light than did stomata from greenhouse-grown leaves. Chlorophyll-mediated, red light-stimulated opening was similar in stomata from the two growth conditions, but stomata from the growth chamber environment had a severely reduced response to blue light. Transfer of plants between the two growth conditions resulted in an acclimation of the stomatal blue light response. Stomata lost blue light sensitivity within 1 d of transfer to growth chamber conditions and gained sensitivity to blue light over an 8 d period after transfer to a greenhouse. Short-term transfer experiments confirmed that the rapid loss of blue light sensitivity was an acclimation response, requiring between 12 and 20 h exposure to growth chamber conditions. The acclimation of the stomatal response to blue light was inversely related to a previously reported acclimation response in which stomata change between high CO2 sensitivity under growth chamber conditions and low CO2 sensitivity under greenhouse conditions. The time courses of the blue light and CO2 acclimation responses were virtually identical, suggesting the possibility of a common acclimation mechanism.

Keywords: Keywords: Blue light — Carbon dioxide — Guard cells — Stomatal acclimation — Vicia faba.; Abbreviations: PPFD, photosynthetic photon flux density; VPD, vapor pressure difference.

Journal Article.  4227 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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