Cu2+ effect upon photosynthesis, chloroplast structure, RNA and protein synthesis of pea plants

Title:

Cu2+ effect upon photosynthesis, chloroplast structure, RNA and protein synthesis of pea plants

Creator:

Angelov, M., Tsonev, T., Uzunova, A., and Gaidardjieva, K.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:b17c0974-68f5-477b-8c96-be9ca313fb4f
uuid:b17c0974-68f5-477b-8c96-be9ca313fb4f
urnnbn:urn:nbn:cz:aba007-000feg

Type:

model:internalpart and TEXT

Format:

print

Description:

Ten day old pea plants {Pisum sativum L., cv. Ran) were ušed to analýze the effects of Cu2+ ions on the dry mass, chlorophyll, carotenoid and proline contents, rates of photosynthesis (En) and transpiration {E), stomatal resistance {r^, carboxylation enzymes activities (RuBPC, PEPC), RNA and protein syntheses and changes in chloroplast structure. Cu^^ treated plants showed lower chlorophyll a and carotenoids contents, and higher than Controls. Pii, E and protein synthesis were significantly reduced. Four days after metal treatment P^ was 5-7 % at 500 and 1000 pM Cu2+ from the Controls, was reduced and E was increased by all ušed metal concentrations. The lower RuBPC activity after the 4 d treatment by 1000 pM Cu2+ could be due to the inhibition of de novo protein synthesis. The higher proline content was probably due to the same reason. Cu2+ ions did not change RNA synthesis in pea leaves. We foímd complete disintegration of chloroplast lamellar systém 4 d after 1000 pM Cu2+ treatment, which confirmed the observed ftmctional changes.

Language:

Multiple languages

Rights:

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

Coverage:

341-350 and 23-32

Source:

Photosynthetica | 1993 Volume:28 | Number:3

Harvested from:

CDK

Metadata only:

false