Transitions in the thylakoid membranes of barley leaves studied by chlorophyll fluorescence temperature curve

Title:

Transitions in the thylakoid membranes of barley leaves studied by chlorophyll fluorescence temperature curve

Creator:

Nauš, J., Dvořák, L., Kuropatwa, R., and Mašláň, M.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:3198af02-873e-434f-b41a-09a17cad99e9
uuid:3198af02-873e-434f-b41a-09a17cad99e9
urnnbn:urn:nbn:cz:aba007-000fc9

Type:

model:internalpart and TEXT

Format:

print

Description:

Chlorophyll (Chl) fluorescence temperature cinve (FTC) of primary leaves of spring barley (Hordeum vulgare L.), cultivated imder a low irradiance, was studied at low actinic radiation excitation (436 nm, 2 W m'^) under a heating regime consisting of a linear increase of temperature (0.083 °C s’*), followed by a period of constant temperature. After prompt cooling of the sample to 77 K, Chl fluorescence spectra at defined points of the temperature regime were measured. Two distinct temperature and kinetic regions expressed by two discemible temperature maxima were observed for ťhis type of the FTC. Two triggering temperatures of successive irreversible changes are postulated at 45-48 “C and 53-55 °C temperature intervals, respectively; they may correlate with the heat inactivation of photosystem 2 and with changes of the chloroplast and cytoplasmic membrane integrity.

Language:

Multiple languages

Rights:

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

Coverage:

563-570 and 139-146

Source:

Photosynthetica | 1992 Volume:27 | Number:4

Harvested from:

CDK

Metadata only:

false