Opinion: stomatal responses to light and CO(2) depend on the mesophyll - PubMed (original) (raw)

Review

. 2009 Nov;32(11):1479-86.

doi: 10.1111/j.1365-3040.2009.02022.x. Epub 2009 Jul 17.

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Review

Opinion: stomatal responses to light and CO(2) depend on the mesophyll

Keith A Mott. Plant Cell Environ. 2009 Nov.

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Abstract

The mechanisms by which stomata respond to red light and CO(2) are unknown, but much of the current literature assumes that these mechanisms reside wholly within the guard cells. However, responses of guard cells in isolated epidermes are typically much smaller than those in leaves, and there are several lines of evidence in the literature suggesting that the mesophyll is necessary for these responses in leaves. This paper advances the opinion that although guard cells may have small direct responses to red light and CO(2), most of the stomatal response to these factors in leaves is caused by an unknown signal that originates in the mesophyll.

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