Publication details

Irradiance prior to and during desiccation improves the tolerance to excess irradiance in the desiccated state of the old forest lichen <i>Lobaria pulmonaria<i>

Investor logo


Year of publication 2008
Type Article in Periodical
Magazine / Source Photosynthetica
MU Faculty or unit

Faculty of Science

Field Botany
Keywords chlorophyll flurescence; photosynthetic quenching; photoinhibition; xanthophyll cycle
Description Hydrated thalli of the lichen Lobaria pulmonaria were either preconditioned to dim irradiance (DI, 5 umol m-2 s-1) or medium irradiance (MI, 200 umol m-2 s-1) for 6 h. After this 6 h period, the thalli were allowed to desiccate under the two respective irradiances. Thereafter, these dry lichens were exposed to high irradiance (HI, 1000 uml m-2 s-1) for 60 h. After this HI treatment, the maximal photochemical quantum yield (Fv/Fm) and the de-epoxidation state of xanthophyll cycle pigments (DEPS) were highest in thalli preconditioned to MI. Hence irradiance in the last hydrated period before sampling is significant for the physiological state of lichens. A standardized
Related projects:

You are running an old browser version. We recommend updating your browser to its latest version.

More info