Delayed fluorescence as a direct indicator of diurnal variation in quantum and radiant energy utilization efficiencies of phytoplankton

Title:

Delayed fluorescence as a direct indicator of diurnal variation in quantum and radiant energy utilization efficiencies of phytoplankton

Creator:

Kurzbaum, E., Eckert, W., and Yacobi, Y. Z.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:69b00162-6c7c-4bb3-acba-c6f4860efedf
uuid:69b00162-6c7c-4bb3-acba-c6f4860efedf
issn:0300-3604
doi:10.1007/s11099-007-0096-z

Subject:

Chlorella, chlorophyll, index of radiant energy utilization efficiency (Ψ), and photosynthesis

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

We compared delayed fluorescence (DF) excitation spectrometry with radiocarbon (14C) technique using a monoalgal culture of Chlorella vulgaris grown under natural temperature and irradiance. This was done by monitoring the DF, in parallel to quantum efficiency (QE) and index of radiant energy utilization efficiency (Ψ) as calculated on the basis of carbon uptake measurements by radiocarbon technique. During the diurnal cycle, temperature, irradiance, and chlorophyll (Chl) contents were monitored in the algal culture that was kept in an open transparent plastic tank submerged at the surface of Lake Kinneret, Israel. The DF signal correlated with both the QE (r 2 = 0.869, p<0.01) and Ψ (r 2 = 0.977, p<0.01) during a diurnal cycle. We suggest that, besides the measurement of active Chl and phytoplankton population composition, the DF signal provides additional information on the QE and Ψ in phytoplankton population. and E. Kurzbaum, W. Eckert, Y. Z. Yacobi.

Language:

Multiple languages

Rights:

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

Coverage:

562-567

Source:

Photosynthetica | 2007 Volume:45 | Number:4

Harvested from:

CDK

Metadata only:

false