Polypeptide composition, pigment-protein complexes, and functional activity of thylakoid membranes isolated from heat-acciimated and non-acciimated pea plants

Title:

Polypeptide composition, pigment-protein complexes, and functional activity of thylakoid membranes isolated from heat-acciimated and non-acciimated pea plants

Creator:

Iordanov, I.E., Moskalenko, A.A., Kuznetsova, N.Y., and Georgieva, K.M.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:dbdbd3cc-c25b-4635-910e-ca48ceedeef4
uuid:dbdbd3cc-c25b-4635-910e-ca48ceedeef4
urnnbn:urn:nbn:cz:aba007-000fhz

Type:

model:internalpart and TEXT

Format:

print

Description:

The influence of higher temperatures on the polypeptide composition of thylakoid membranes and pigment-protein complexes, as well as on some parameters of their functional activity, in both acclimated and non-acclimated young pea plants, was studied. Almost the whole set of polypeptides in thylakoid membranes as vvell as in T40 particles was preserved after heat treatment (5 h, 55 °C). During acclimation of the plants to high temperatures a reorganization of the photosynthetic apparatus took plače. In its thylakoids the oligomer/monomer ratio of the photosystem (PS) 2 light- harvesting antenna was more than 50 % higher compared to similar samples of the non-acclimated plants. After both the treatment of 5 h at 55 °C only (non-acclimated plants) and that with step-wise increasing temperatures (acclimated plants), the PSI activity was practically unchanged in all three variants, whereas the PS2 activity decreased more significantly in non-acclimated plants only.

Language:

Multiple languages

Rights:

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

Coverage:

427-435 and 109-117

Source:

Photosynthetica | 1993 Volume:29 | Number:3

Harvested from:

CDK

Metadata only:

false