Seasonal variation of photoinhibition of photosynthesis in bark from Populus tremula L.

Title:

Seasonal variation of photoinhibition of photosynthesis in bark from Populus tremula L.

Creator:

Solhaug, K. A. and Haugen, J.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:cf2c3538-a12d-48bc-a547-5b9a8a608ef1
uuid:cf2c3538-a12d-48bc-a547-5b9a8a608ef1
issn:0300-3604
doi:10.1023/A:1006968403331

Subject:

chlorophyll fluorescence induction, irradiance, oxygen evolution, phellem, photosystem 2, poplar, quantum yyield, seasonal course, and tree age

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

In the bark of Populus tremula L. photochemical efficiency of photosystem 2 (PS2) determined as Fv/Fm decreased during winter. The strongest reduction was found after cold periods. The degree of reduction depended on irradiance since the lowest levels of Fv/Fm were found on the sun-exposed side of the stem and below thin phellem. Therefore, photoinhibition was partly responsible for the reduction in Fv/Fm. The photochemical efficiency of PS2 recovered in late April about a month before the trees got leaves. In the laboratory, Fv/Fm recovered within about a week under low irradiance at 20 °C. Rapid recovery of photochemical efficiency of PS2 in the bark may be important to reduce respiratory loss of CO2 from the stem before the trees get leaves. and K. A. Solhaug, J. Haugen.

Language:

Multiple languages

Rights:

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

Coverage:

411-417

Source:

Photosynthetica | 1998 Volume:35 | Number:3

Harvested from:

CDK

Metadata only:

false