Photosynthetic activity of poikilochlorophyllous desiccation tolerant plant Reaumuria soongorica during dehydration and re-hydration

Title:

Photosynthetic activity of poikilochlorophyllous desiccation tolerant plant Reaumuria soongorica during dehydration and re-hydration

Creator:

Xu, D. H., Li, J. H., Fang, X. W., Wang, G., and Su, P. X.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:55fb4b0f-6a20-489e-b383-6c1017536a1a
uuid:55fb4b0f-6a20-489e-b383-6c1017536a1a
issn:0300-3604
doi:10.1007/s11099-008-0092-y

Subject:

carotenoids, chlorophyll fluorescence, drought stress, non-photochemical quenching, photosystem 2, quantum efficiency, relative water content, and stomatal conductance

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Diurnal patterns of gas exchange and chlorophyll (Chl) fluorescence parameters of photosystem 2 (PS2) as well as Chl content were analyzed in Reaumuria soongorica (Pall.) Maxim., a perennial semi-shrub during dehydration and rehydration. The net photosynthetic rate (PN), maximum photochemical efficiency of PS2 (variable to maximum fluorescence ratio, Fv/Fm), quantum efficiency of non-cyclic electron transport of PS2, and Chl content decreased, but non-photochemical quenching of fluorescence and carotenoid content increased in stems with the increasing of drought stress. 6 d after re-hydration, new leaves budded from stems. In the re-watered plants, the chloroplast function was restored and Chl a fluorescence returned to a similar level as in the control plants. This improved hydraulic adjustment in plant triggered a positive effect on ion flow in the tissues and increased shoot electrical admittance. Thus R. soongorica plants are able to sustain drought stress through leaf abscission and keep part of Chl content in stems. and D. H. Xu ... [et al.].

Language:

Multiple languages

Rights:

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

Coverage:

547-551

Source:

Photosynthetica | 2008 Volume:46 | Number:4

Harvested from:

CDK

Metadata only:

false