Role of alternative oxidase pathway in protection against drought-induced photoinhibition in pepper leaves

Title:

Role of alternative oxidase pathway in protection against drought-induced photoinhibition in pepper leaves

Creator:

Hu, W. H., Yan, X. H., He, Y., and Ye, X. L.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:1ce5bbc4-204d-430f-a296-a690c4fcbcdb
uuid:1ce5bbc4-204d-430f-a296-a690c4fcbcdb
issn:0300-3604
doi:10.1007/s11099-018-0837-1

Subject:

fotosyntéza, photosynthesis, photoinhibition, alternative oxidase pathway, Capsicum annuum L, chlorophyll fluorescence, drought, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

The aim of this study was to assess the impact of the mitochondrial alternative oxidase (AOX) pathway on energy metabolism in chloroplasts, and evaluate the importance of the AOX in alleviating drought-induced photoinhibition in pepper (Capsicum annuum L.). Inhibition of AOX pathway decreased photosynthesis and increased thermal energy dissipation in plants under normal conditions. It indicated that AOX pathway could influence chloroplast energy metabolism. Drought reduced carbon assimilation. Photoinhibition was caused by excess of absorbed light energy in spite of the increase of thermal energy dissipation and cyclic electron flow around PSI (CEF-PSI). Upregulation of AOX pathway in leaves experiencing drought would play a critical role in protection against photoinhibition by optimization of carbon assimilation and PSII function, which would avoid over-reduction of photosynthetic electron transport chain. However, inhibition of AOX pathway could be compensated by increasing the thermal energy dissipation and CEF-PSI under drought stress, and the compensation of CEF-PSI was especially significant., W. H. Hu, X. H. Yan, Y. He, X. L. Ye., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

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

Coverage:

1297-1303

Source:

Photosynthetica | 2018 Volume:56 | Number:4

Harvested from:

CDK

Metadata only:

false