Green light reversal of blue-light-stimulated stomatal opening is found in a diversity of plant species

被引：93

作者：

Talbott, LD ^{[1
]}

Nikolova, G ^{[1
]}

Ortiz, A ^{[1
]}

Shmayevich, I ^{[1
]}

Zeiger, E ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Organism Biol Ecol & Evolut, Los Angeles, CA 90024 USA

来源：

AMERICAN JOURNAL OF BOTANY | 2002年 / 89卷 / 02期

关键词：

blue light; guard cell; photoreversibility; stomata; zeaxanthin;

D O I：

10.3732/ajb.89.2.366

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Reversal by green light of blue-light-stimulated stomatal opening was found across a number of plant species. including leguminous and nonleguminous dicots and grass and nongrass monocots. Simultaneous exposure to equal fluence rates of blue and green light resulted in similar to50% reversal of normal blue light opening Complete reversal Occurred when the fluence rate of green light was approximately twice that of blue light. These results suggest that blue-green reversibility of stomatal opening is a basic photobiological property Of guard cells The blue-green reversibility of stomatal opening has been hypothesized to ensue from the cycling of two interconvertible, isomeric forms of the blue-light photoreceptor, zeaxanthin Testing of blue-green reversibility could provide a valuable diagnostic tool for zeaxanthin-mediated blu-light photoperception.

引用

页码：366 / 368

页数：3

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