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Stomatal behaviour, photosynthesis and transpiration under rising CO2.

Jarvis, A. J. and Mansfield, T. A. and Davies, William J. (1999) Stomatal behaviour, photosynthesis and transpiration under rising CO2. Plant Cell and Environment, 22 (6). pp. 639-648. ISSN 0140-7791

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Abstract

Definitions of the variables used and the units are given in Table 1 The literature reports enormous variation between species in the extent of stomatal responses to rising CO2. This paper attempts to provide a framework within which some of this diversity can be explained. We describe the role of stomata in the short-term response of leaf gas exchange to increases in ambient CO2 concentration by developing the recently proposed stomatal model of Jarvis & Davies (1998). In this model stomatal conductance is correlated with the functioning of the photosynthetic system so that the effects of increases in CO2 on stomata are experienced through changes in the rate of photosynthesis in a simple and mechanistically transparent way. This model also allows us to consider the effects of evaporative demand and soil moisture availability on stomatal responses to photosynthesis and therefore provides a means of considering these additional sources of variation. We emphasize that the relationship between the rate of photosynthesis and the internal CO2 concentration and also drought will have important effects on the relative gains to be achieved under rising CO2.

Item Type: Article
Journal or Publication Title: Plant Cell and Environment
Subjects: Q Science > QH Natural history > QH301 Biology
Departments: Faculty of Science and Technology > Lancaster Environment Centre
VC's Office
ID Code: 8904
Deposited By: Prof William J Davies
Deposited On: 16 May 2008 11:58
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 18:28
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/8904

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