Contrasting responses of photosynthesis at low temperatures in different annual legume species

Title:

Contrasting responses of photosynthesis at low temperatures in different annual legume species

Creator:

Antolín, M. C., Hekneby, M., and Sánchez-Díaz, M.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:d5d1c928-387d-457e-b172-bb701ba6444b
uuid:d5d1c928-387d-457e-b172-bb701ba6444b
issn:0300-3604
doi:10.1007/s11099-005-5074-8

Subject:

chlorophyll fluorescence, old acclimation, dry matter accumulation, leaf area ratio, net photosynthetic rate, photosystem 2, specific leaf area, ribulose-1,5-bisphosphate carboxylase, oxygenase, and stromal fructose-1,6-bisphosphatase

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Growth, net photosynthetic rate (PN), chlorophyll fluorescence induction kinetics, and stromal fructose-1,6-bisphosphatase (sFBPase) in annual legumes native to the Mediterranean region, two clovers (Trifolium subterraneum L. ssp. oxaloides Nyman cv. Clare and T. michelianum Savi cv. Giorgia) and two Medicago species (M. polymorpha L. cv. Anglona and M. truncatula Gaertn. cv. Paraggio), shifted from 20 to 10 °C for 1 d or developed at 10 °C were compared with controls kept at 20 °C. Cold development produced a larger stimulation of growth in the clover cv. Giorgia and the Medicago cv. Paraggio. Transferring plants to low temperatures affected PN relatively less in clovers than in Medicago plants. Development at 10 °C relieved the inhibition of photosynthesis in Giorgia and Paraggio, but not in Clare and Anglona, which correlated with increases in the maximum rate of carboxylation by ribulose-1,5-bisphosphate carboxylase/oxygenase, RuBPCO (Vcmax), and the photon-saturated rate of electron transport (Jmax). In Medicago, transfer from high to low temperature inhibited photosynthesis in a lesser extent in Anglona than in Paraggio, which showed severe limitations at level of Vcmax and Jmax. Development at 10 °C in Paraggio produced an efficient photosynthetic cold acclimation, this being associated with a two-fold increase of quantum yield of photosystem 2 electron transport (ΔF/F'm) and with the activity of sFBPase. By contrast, Anglona showed an irreversible inhibition of PN coupled with the reduction of carbon metabolism by impairment of Calvin cycle enzyme activities such as RuBPCO and sFBPase, resulting in a poor cold acclimation of photosynthesis in this cultivar. and M. C. Antolín, M. Hekneby, M. Sánchez-Díaz.

Language:

Multiple languages

Rights:

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

Coverage:

65-74

Source:

Photosynthetica | 2005 Volume:43 | Number:1

Harvested from:

CDK

Metadata only:

false