scholarly journals Image Analysis of Chlorophyll Fluorescence Transients of Cultured Carrot Tissues.

1992 ◽  
Vol 30 (3) ◽  
pp. 127-131 ◽  
Author(s):  
Kenji OMASA
Keyword(s):  
Image Analysis ◽  
Chlorophyll Fluorescence ◽  
Fluorescence Transients ◽  
Chlorophyll Fluorescence Transients

scholarly journals Image Analysis of Chlorophyll Fluorescence Transients for Diagnosing the Photosynthetic System of Attached Leaves

1987 ◽  
Vol 84 (3) ◽  
pp. 748-752 ◽  
Author(s):  
Kenji Omasa ◽  
Ken-Ichiro Shimazaki ◽  
Ichiro Aiga ◽  
Walter Larcher ◽  
Morio Onoe
Keyword(s):  
Image Analysis ◽  
Chlorophyll Fluorescence ◽  
Photosynthetic System ◽  
Fluorescence Transients ◽  
Chlorophyll Fluorescence Transients

Chlorophyll fluorescence transients in a barley mutant lacking Photosystem I

1993 ◽  
Vol 35 (3) ◽  
pp. 305-310 ◽  
Author(s):  
Ren� K. Juhler ◽  
Mette Miller ◽  
David Simpson ◽  
Raymond P. Cox
Keyword(s):  
Chlorophyll Fluorescence ◽  
Photosystem I ◽  
Barley Mutant ◽  
Fluorescence Transients ◽  
Chlorophyll Fluorescence Transients

Effects of short-term low temperature stress on chlorophyll fluorescence transients in Antarctic lichen species

2016 ◽  
Vol 6 (1) ◽  
pp. 54-65 ◽  
Author(s):  
Michaela Marečková ◽  
Miloš Barták
Keyword(s):  
Chlorophyll Fluorescence ◽  
Low Temperature ◽  
Temperature Effects ◽  
Photochemical Quenching ◽  
Short Term ◽  
Ps Ii ◽  
Species Specific ◽  
Non Photochemical Quenching ◽  
Fluorescence Transients ◽  
Chlorophyll Fluorescence Transients

Chlorophyll fluorescence is an effective tool for investigating characteristics of any photosynthesizing organisms and its responses due to different stressors. Here, we have studied a short-term temperature response on two Antarctic green algal lichen species: Umbilicaria antarctica, and Physconia muscigena. We measured slow chlorophyll fluorescence transients in the species during slow a cooling of thallus temperature from 20°C to 5°C with a 10 min. acclimation at each temperature in dark. The measurements were supplemented with saturation pulses for the analysis of chlorophyll fluorescence parameters: maximum yield of PS II photochemistry (FV/FM), effective quantum yield of PS II photochemistry (FPSII) and non-photochemical quenching (NPQ). In response to decreasing thallus temperature, we observed species-specific changes in chlorophyll fluorescence levels P, S, M, T reached during chlorophyll fluorescence transient as well as in the shape of the chlorophyll fluorescence transients. With a decrease in temperature, the time at which M and T chlorophyll fluorescence levels were reached, increased. These changes were attributed to redox state of plastoquinon pool, changes in Calvin-Benson cycle activity, non-photochemical quenching components, state transition in particular. In this study, we present some chlorophyll fluorescence ratios (P/M, M/T, P/T) and chlorophyll fluorescence increase rates (FR1, i.e. O to P, and FR2 - i.e. S to M) as the parameters reflecting direct temperature effects on chloroplastic apparatus of lichen alga sensitively. We proposed that species-specific changes in the slow phase of chlorophyll fluorescence transients could be potentially used as indicators of low temperature effects in photosynthetic apparatus of lichen algal photobionts. Interspecific differences in response to low temperature might be evaluated using the approach as well.

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