Acclimation of photosynthesis to temperature in Arabidopsis thaliana and Brassica oleracea

Title:

Acclimation of photosynthesis to temperature in Arabidopsis thaliana and Brassica oleracea

Creator:

Bunce, J. A.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:15d0bdb6-d97e-4ee3-9ebb-42b94a1190e7
uuid:15d0bdb6-d97e-4ee3-9ebb-42b94a1190e7
issn:0300-3604
doi:10.1007/s11099-008-0088-7

Subject:

chlorophyll fluorescence, mesophyll conductance to CO2, photosynthetic electron transport, species differences, and triose phosphate utilization ratio

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Plants differ in how much the response of net photosynthetic rate (PN) to temperature (T) changes with the T during leaf development, and also in the biochemical basis of such changes in response. The amount of photosynthetic acclimation to T and the components of the photosynthetic system involved were compared in Arabidopsis thaliana and Brassica oleracea to determine how well A. thaliana might serve as a model organism to study the process of photosynthetic acclimation to T. Responses of single-leaf gas exchange and chlorophyll fluorescence to CO2 concentration measured over the range of 10-35 °C for both species grown at 15, 21, and 27 °C were used to determine the T dependencies of maximum rates of carboxylation (VCmax), photosynthetic electron transport (Jmax), triose phosphate utilization rate (TPU), and mesophyll conductance to carbon dioxide (g'm). In A. thaliana, the optimum T of PN at air concentrations of CO2 was unaffected by this range of growth T, and the T dependencies of VCmax, Jmax, and g'm were also unaffected by growth T. There was no evidence of TPU limitation of PN in this species over the range of measurement conditions. In contrast, the optimum T of PN increased with growth T in B. oleracea, and the T dependencies of VCmax, Jmax, and g'm, as well as the T at which TPU limited PN all varied significantly with growth T. Thus B. oleracea had much a larger capacity to acclimate photosynthetically to moderate T than did A. thaliana.

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

517-524

Source:

Photosynthetica | 2008 Volume:46 | Number:4

Harvested from:

CDK

Metadata only:

false