Variability of the photosynthetic machinery tolerance when imposed to rapidly or slowly imposed dehydration in native Mediterranean plants

Title:

Variability of the photosynthetic machinery tolerance when imposed to rapidly or slowly imposed dehydration in native Mediterranean plants

Creator:

Koutra, E., Chondrogiannis, C., and Grammatikopoulos, G.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:ca818674-4a0d-43ee-8dc8-3d0713f46d76
uuid:ca818674-4a0d-43ee-8dc8-3d0713f46d76
doi:10.32615/ps.2022.003

Subject:

drought factor index, integrated biomarker response, JIP-test, photosynthesis, plant growth forms, and water stress

Type:

model:article and TEXT

Format:

počítač and online zdroj

Description:

Dehydration affects the photosynthetic apparatus. The impact of dehydration on photosynthesis was assessed in twelve Mediterranean species representing different growth forms. Rapid and slow dehydration experiments were conducted to (1) compare the impact of water stress among species and growth forms, (2) rank species according to their drought tolerance. Rapid dehydration reduced the electron transport up to PSI, the reduction being linearly related to leaf relative water content (RWC), except for the deciduous species. Specific energy fluxes per reaction center and maximum photochemical activity of PSII remained relatively stable until 10-30% RWC. The modification pattern of the studied parameters was similar for all the growth forms. Slow rehydration increased specific energy fluxes and decreased quantum yields. The dehydration pattern was similar among growth forms, while the recovery pattern was species-specific. Drought tolerance ranking through drought factor index was relatively modified with the integrated biomarker response method.

Language:

Multiple languages

Rights:

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

Coverage:

88-101

Source:

Photosynthetica | 2022 Volume:60 | Number:Special issue

Harvested from:

CDK

Metadata only:

false