Chlorophyll a fluorescence analysis of high-yield rice (Oryza sativa L.) LYPJ during leaf senescence

Title:

Chlorophyll a fluorescence analysis of high-yield rice (Oryza sativa L.) LYPJ during leaf senescence

Creator:

Wang, Y. W., Xu, C., Lv, C. F., Wu, M., Cai, X. J., Liu, Z. T., Song, X. M., Chen, G. X., and Lv, C. G.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:dc48fa2d-2727-4583-8efa-6260a3bd5520
uuid:dc48fa2d-2727-4583-8efa-6260a3bd5520
issn:0300-3604
doi:10.1007/s11099-016-0185-y

Subject:

fotosyntéza, photosynthesis, thylakoid membrane, JIP-test, natural senescence, PSII efficiency, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

Photosystem II (PSII) photochemistry was examined by chlorophyll (Chl) a fluorescence analysis in high-yield rice LYPJ flag leaves during senescence. Parameters deduced from the JIP-test showed that inhibition of the donor side of PSII was greater than that of the acceptor side in hybrid rice LYPJ. The natural senescence process was accompanied by the increased inactivation of oxygen-evolving complex (OEC) and a lower total number of active reaction centers per absorption. It indicated that the inhibition of electron transport caused by natural senescence might be caused partly by uncoupling of the OEC and/or inactivation of PSII reaction centers. Chl fluorescence parameters analyzed in this study suggested that energy dissipation was enhanced in order to protect senescent leaves from photodamage. Nevertheless, considerably reduced PSI electron transport activity was observed at the later senescence. Thus, natural senescence inhibited OEC-PSII electron transport, but also significantly limited the PSII-PSI electron flow., Y. W. Wang, C. Xu, C. F. Lv, M. Wu, X. J. Cai, Z. T. Liu, X. M. Song, G. X. Chen, C. G. Lv., and Seznam literaruty

Language:

Multiple languages

Rights:

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

Coverage:

422-429

Source:

Photosynthetica | 2016 Volume:54 | Number:3

Harvested from:

CDK

Metadata only:

false