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Passive origins of stomatal control in vascular plants

Citation

Brodribb, TJ and McAdam, SAM, Passive origins of stomatal control in vascular plants, Science, 331, (6017) pp. 582-585. ISSN 0036-8075 (2011) [Refereed Article]


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Copyright Statement

Copyright 2011 The American Association for the Advancement of Science

DOI: doi:10.1126/science.1197985

Abstract

Carbon and water flow between plants and the atmosphere is regulated by the opening and closing of minute stomatal pores in surfaces of leaves. By changing the aperture of stomata, plants regulate water loss and photosynthetic carbon gain in response to many environmental stimuli, but stomatal movements cannot yet be reliably predicted. We found that the complexity that characterizes stomatal control in seed plants is absent in early-diverging vascular plant lineages. Lycophyte and fern stomata are shown to lack key responses to abscisic acid and epidermal cell turgor, making their behavior highly predictable. These results indicate that a fundamental transition from passive to active metabolic control of plant water balance occurred after the divergence of ferns about 360 million years ago.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Evolutionary Biology
Research Field:Biological Adaptation
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Forest and Woodlands Flora, Fauna and Biodiversity
Author:Brodribb, TJ (Professor Tim Brodribb)
Author:McAdam, SAM (Dr Scott McAdam)
ID Code:71957
Year Published:2011
Web of Science® Times Cited:168
Deposited By:Plant Science
Deposited On:2011-08-16
Last Modified:2017-08-23
Downloads:9 View Download Statistics

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