Response of photosynthetic apparatus in Arabidopsis thaliana L. mutant deficient in phytochrome A and B to UV-B

Title:

Response of photosynthetic apparatus in Arabidopsis thaliana L. mutant deficient in phytochrome A and B to UV-B

Creator:

Kreslavski, V. D., Shmarev, A. N., Lyubimov, V. Yu., Semenova, G. A., Zharmukhamedov, S. K., Shirshikova, G. N., Khudyakova, A. Yu., and Allakhverdiev, S. I.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:87ac6fbe-2651-4170-95b7-182813b41bd1
uuid:87ac6fbe-2651-4170-95b7-182813b41bd1
issn:0300-3604
doi:10.1007/s11099-017-0754-8

Subject:

fotosyntéza, photosynthesis, chloroplast structure, fluorescence of Chl a, photosystem I, phytochrome mutants, stress, ultraviolet, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

The effects of UV-B radiation (1 W m-2, 1 and 2 h) on PSII activity, chloroplast structure, and H2O2 contents in leaves of 26-d-old Arabidopsis thaliana phyA phyB double mutant (DMut) compared with the wild type (WT) were investigated. UV-B decreased PSII activity and affected the H2O2 content in WT and DMut plants grown under white light (WL). The chloroplast structure changes in DMut plants exposed to UV were more significant than that in WT. Reductions in maximal and real quantum photochemical yields and increase in the value of thermal dissipation of absorbed light energy per PSII RC and the amount of QB-nonreducing centers of PSII were bigger in mutant compared to WT plants grown both under WL and red light. Such difference in action of UV-B on WT and DMut can be explained by higher content of UV-absorbing pigments and carotenoids in WT leaves compared with DMut., V. D. Kreslavski, A. N. Shmarev, V. Yu. Lyubimov, G. A. Semenova, S. K. Zharmukhamedov, G. N. Shirshikova, A. Yu. Khudyakova, S. I. Allakhverdiev., and Obsahuje bibliografické odkazy

Language:

Multiple languages

Rights:

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

Coverage:

418-426

Source:

Photosynthetica | 2018 Volume:56 | Number:1

Harvested from:

CDK

Metadata only:

false