photopigment

(redirected from photopigments)
Also found in: Dictionary, Thesaurus, Encyclopedia.

photopigment

/pho·to·pig·ment/ (fo″to-pig´ment) a pigment that is unstable in the presence of light.

photopigment

a pigment molecule that can be excited by light, such as CHLOROPHYLL.

photopigment 

Any pigment, such as the visual pigment found in the photoreceptors of the retina, which is altered by the absorption of light energy. See visual pigment; rhodopsin.
References in periodicals archive ?
Likewise, we know of no microspectrophotometry studies detailing the absorbance maxima of photopigments in juvenile or adult Pacific halibut retinas.
This, taken together with evidence for extraocular photoreception in the nerve cords of decapods, warrants further investigation into whether the abundance of stomatopod opsin transcripts found in retinas extends to extraretinal tissues and whether they there form functional photopigments that contribute to a significant physiological role.
Other structural changes are produced from a series of cross over events and result in a wide range of photopigments with peak wavelength sensitivities between 560nm and 530nm.
These new indicators include such metrics as diagnostic photopigments of algal functional groups to assess eutrophication (Paerl et al.
This trichromatic theory of vision assumes that people inherit a separate gene for each of the three photopigments.
66-68) This has been attributed to the existence of a range of hybrid opsin genes which encode a range of photopigments with different peak spectral sensitivities.
Opsin proteins, together with a light-sensitive chromophore, form photopigments that are the basis of light detection in most animal extraocular and visual systems (Porter et al.
Further investigation into the spectral class(es) of planula photoreceptors, and the photopigments responsible, is warranted.
An endoevaporitic microbial mat within a gypsum crust: zonation of phototrophs, photopigments, and light penetration.
Knowledge of the spectral absorption characteristics of photopigments for vertically migrating organisms and their relationship to the spectral availability of ambient light is critical to understanding the proximate physiological basis of DVM.
Maximum absorbance by photopigments was determined by microspectrophotometry (MSP) or pigment extraction (PE).