Light re-emitted by chlorophyll molecules during return from excited to non-excited states
A chlorophyll extract in alcohol shown under white light (above) and UV light inducing fluorescence (below).Confocal microscope images of a tomato leaf from Solanum lycopersicum. Brightfield DIC image showing guard cells and pavement cells (above). Same region showing Chlorophyll A autofluorescence with 440 nm laser excitation and far red emission (below).Microscopic images of a moss leaf from Plagiomnium undulatum. Bright-field microscopy at the top and fluorescence microscopy at the bottom. The red fluorescence is from the chlorophyll in the chloroplasts.
Chlorophyll fluorescence is light re-emitted by chlorophyll molecules during return from excited to non-excited states. It is used as an indicator of photosynthetic energy conversion in plants, algae and bacteria. Excited chlorophyll dissipates the absorbed light energy by driving photosynthesis (photochemical energy conversion), as heat in non-photochemical quenching or by emission as fluorescence radiation. As these processes are complementary processes, the analysis of chlorophyll fluorescence is an important tool in plant research with a wide spectrum of applications.[1][2]
^Lu, Congming; Zhang, Jianhua (July 1999). "Effects of Water Stress on Photosystem II Photochemistry and Its Thermostability in Wheat Plants" (PDF). Journal of Experimental Botany. 50 (336): 1199–1206. doi:10.1093/jxb/50.336.1199.
Chlorophyllfluorescence is light re-emitted by chlorophyll molecules during return from excited to non-excited states. It is used as an indicator of...
of chlorophylls are summarized below: Structures of chlorophyllschlorophyll a chlorophyll b chlorophyll c1 chlorophyll c2 chlorophyll d chlorophyll f...
that measure parameters related to photosynthesis (chlorophyll content, chlorophyllfluorescence, gas exchange) or water use (porometer, pressure bomb)...
environmental monitoring. For instance, they are used to measure chlorophyllfluorescence to investigate plant physiology. Typically fluorometers utilize...
cuticles. In 2020 fluorescence was reported for several platypus specimens. Many plants are fluorescent due to the presence of chlorophyll, which is probably...
as chlorophyllfluorescence at longer (redder) wavelengths. This fact allows measurement of the light reaction of photosynthesis by using chlorophyll fluorometers...
measure chlorophyll content using chlorophyllfluorescence. In his scientific paper Gitelson (1999) states, "The ratio between chlorophyllfluorescence, at...
Chlorophyll a is a specific form of chlorophyll used in oxygenic photosynthesis. It absorbs most energy from wavelengths of violet-blue and orange-red...
A fluorescence microscope is an optical microscope that uses fluorescence instead of, or in addition to, scattering, reflection, and attenuation or absorption...
photosynthesising cells are illuminated with continuous light, chlorophyllfluorescence displays characteristic changes in intensity accompanying the induction...
dissipated as heat (non-photochemical quenching), or emitted as chlorophyllfluorescence. Quoted values sunlight-to-biomass efficiency The following is...
salinity (including dissolved nutrients), temperature, pressure, and chlorophyllfluorescence. Collected water samples can be used to determine phytoplankton...
relative chlorophyll concentration. Chlorophyll content can also be assessed with a chlorophyll fluorometer, which measures a chlorophyllfluorescence ratio...
and Chlorophyllfluorescence emission was used to examine the effect of extreme light intensity. As the emission of the Chlorophyllfluorescence increased...
and shows high genetic correlation with yield. (D) ChlorophyllfluorescenceChlorophyllfluorescence, an indication of the fate of excitation energy in...
application framework for Scala Light-Induced Fluorescence Transient, a device to remotely measure chlorophyllfluorescence in plants Lift (mathematics), a morphism...
light is reflected from snow. There is a small contribution from chlorophyllfluorescence, but this is marginal and is not the real cause of the brightness...
and other electronic sensors (such as a fluorometer to measure chlorophyllfluorescence and a transmissometer to measure turbidity). A CTD-rosette comes...
evaluation of anthocyanins in olive (Olea europaea) fruits by in situ chlorophyllfluorescence spectroscopy". Journal of Agricultural and Food Chemistry. 53 (5):...
determined by chlorophyllfluorescence quenching: Characterization and function" in Papageorgiou GC & Govindjee (eds.) "ChlorophyllFluorescence: A Signature...
(2011). "The interrelationship between the lower oxygen limit, chlorophyllfluorescence and the xanthophyll cycle in plants". Photosynthesis Research....
Patrick D. (1995-03-01). "Movement Influences Carambola Leaflet ChlorophyllFluorescence and Temperature under Sunny Conditions". Journal of the American...
"Acclimation effects of heat waves and elevated [CO2] on gas exchange and chlorophyllfluorescence of northern red oak (Quercus rubra L.) seedlings". Plant Ecology...
changes at 531 nm and their relationship with photosynthesis and chlorophyllfluorescence". Remote Sensing of Environment. 91 (2): 175–185. Bibcode:2004RSEnv...
"An inexpensive flow cytometer for the analysis of fluorescence signals in phytoplankton: Chlorophyll and DNA distributions". Journal of Experimental Marine...
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