Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - The coupled response of stomatal conductance to photosynthesis and transpiration
AU - Jarvis, Andrew J.
AU - Davies, William J.
PY - 1998/3/1
Y1 - 1998/3/1
N2 - Increases in the net rate of photosynthesis and stomatal conductance of leaves are perceived to occur simultaneously. Published data are re-analysed here to show that when increases in the net rate of photosynthesis are a result of transient increases in the ambient CO2 concentration then the reverse is the case, i.e. increases in net photosynthesis are closely correlated to reductions in stomatal conductance. Rather than explain this observation in terms of a direct effect of CO2 on stomata this article develops the idea that stomata respond to a signal in proportion to the degree to which the photosynthetic capacity is realized. This interpretation of stomatal function facilitates the formulation of a simple static model of stomatal responses to the rates of both carbon gain and water loss.
AB - Increases in the net rate of photosynthesis and stomatal conductance of leaves are perceived to occur simultaneously. Published data are re-analysed here to show that when increases in the net rate of photosynthesis are a result of transient increases in the ambient CO2 concentration then the reverse is the case, i.e. increases in net photosynthesis are closely correlated to reductions in stomatal conductance. Rather than explain this observation in terms of a direct effect of CO2 on stomata this article develops the idea that stomata respond to a signal in proportion to the degree to which the photosynthetic capacity is realized. This interpretation of stomatal function facilitates the formulation of a simple static model of stomatal responses to the rates of both carbon gain and water loss.
KW - Photosynthesis
KW - Stomatal conductance
KW - Transpiration
U2 - 10.1093/jxb/49.special_issue.399
DO - 10.1093/jxb/49.special_issue.399
M3 - Journal article
AN - SCOPUS:0031916927
VL - 49
SP - 399
EP - 406
JO - Journal of Experimental Botany
JF - Journal of Experimental Botany
SN - 0022-0957
IS - SPEC. ISS.
ER -