Distribution of excitation energy between photosystems 2 and 1 upon adaptation of high-CO2 grown cells of Chlorella vulgaris sp. K to low CO2

Title:

Distribution of excitation energy between photosystems 2 and 1 upon adaptation of high-CO2 grown cells of Chlorella vulgaris sp. K to low CO2

Creator:

Demidov, E. D. and Elfimov, E. I.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:657e8a4a-ef0a-496b-98fd-a7a76a1fa55d
uuid:657e8a4a-ef0a-496b-98fd-a7a76a1fa55d
urnnbn:urn:nbn:cz:aba007-000fbr

Type:

model:internalpart and TEXT

Format:

print

Description:

The 77 K fluorescence emission was measured on Chlorella cells at regular intervals during adaptatíon of high CO2 (1.8 % CO2 v/v) grown cells to air level of CO2. The ratíos of the peaks at 686 and 697 nm (photosystem 2, PS 2, fluorescence) to the peak at 720 nm (PS 1 fluorescence) decreased and approached a constant level in about 1.5 h. The extemal concentration of dissolved inorganic carbon (DlC) required for the half-maximum rates of C02-dependent O2 evolutíon, 5, also decreased and reached a constant level aíter the same period of adaptatíon. Hence the íncreased demand for ATP/NADPH during the CO2 assimilatíon by the ''C02-concentrating mechanism" induces the redistribution of excitation energy from PS 2 to PS 1 and increases formation of ATP by the cyclic photophosphorylatíon.

Language:

Multiple languages

Rights:

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

Coverage:

421-425 and 157-161

Source:

Photosynthetica | 1992 Volume:27 | Number:3

Harvested from:

CDK

Metadata only:

false