Alterations in electron transport characteristics during senescence of Cucumis cotyledonary leaves. Analysis of the effects of inhibitors

Title:

Alterations in electron transport characteristics during senescence of Cucumis cotyledonary leaves. Analysis of the effects of inhibitors

Creator:

Prakash, J. S. S., Baig, M. A., and Mohanty, Prasanna

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:a8114a9c-e01f-469c-833e-eebaa7ae6fc3
uuid:a8114a9c-e01f-469c-833e-eebaa7ae6fc3
issn:0300-3604
doi:10.1023/A:1006904116535

Subject:

atrazine, cucumber, DCMU, dibromothymoquinone, KCN, photosystems 1 and 2, plant age, and thylakoid proteins

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Cotyledonary leaves of Cucumis sativus cv. Poinsette exhibited senescence-induced losses in chlorophyll (Chl) and protein contents within three weeks since germination. Chl and protein concentrations in cotyledonary leaves approached maximum on 6th d after germination and they declined to 50 and 41 %, respectively, by the 20th day of growth. Activities of both photosystem (PS) 2 and PS1 decreased by 33 and 31 %, respectively, on the 20th day, compared to the control 6th day. Changes in sensitivity of PS2 to inhibitors like atrazine and dibromothymoquinone and sensitivity of PS1 to KCN accompanied the changes in PS2 and PS1 activities. Hence both the acceptor side of PS2 and the donor side of PS1 are affected by senescence-induced changes in cucumber cotyledonary leaves. and J. S. S. Prakash, M. A. Baig, Prasanna Mohanty.

Language:

Multiple languages

Rights:

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

Coverage:

345-352

Source:

Photosynthetica | 1998 Volume:35 | Number:3

Harvested from:

CDK

Metadata only:

false