Insect retinal pigments: Spectral characteristics and physiological functions

Stavenga, Doekele G.

doi:10.1016/1350-9462(95)00011-9

Cited by 37 publications

(29 citation statements)

References 136 publications

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“…Some of the retinal tracheae have bifurcating branches (Figure 1D, white arrow). This is in contrast to the observation of one tracheal tube associated with each ommatidium in the house-fly Musca domestica [47] and blow-fly Calliphora vicina [48]. …”

Section: Resultscontrasting

confidence: 86%

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FGF /FGFR Signal Induces Trachea Extension in the Drosophila Visual System

2013

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The Drosophila compound eye is a large sensory organ that places a high demand on oxygen supplied by the tracheal system. Although the development and function of the Drosophila visual system has been extensively studied, the development and contribution of its tracheal system has not been systematically examined. To address this issue, we studied the tracheal patterns and developmental process in the Drosophila visual system. We found that the retinal tracheae are derived from air sacs in the head, and the ingrowth of retinal trachea begin at mid-pupal stage. The tracheal development has three stages. First, the air sacs form near the optic lobe in 42-47% of pupal development (pd). Second, in 47-52% pd, air sacs extend branches along the base of the retina following a posterior-to-anterior direction and further form the tracheal network under the fenestrated membrane (TNUFM). Third, the TNUFM extend fine branches into the retina following a proximal-to-distal direction after 60% pd. Furthermore, we found that the trachea extension in both retina and TNUFM are dependent on the FGF(Bnl)/FGFR(Btl) signaling. Our results also provided strong evidence that the photoreceptors are the source of the Bnl ligand to guide the trachea ingrowth. Our work is the first systematic study of the tracheal development in the visual system, and also the first study demonstrating the interactions of two well-studied systems: the eye and trachea.

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Section: Resultscontrasting

confidence: 86%

“…This is consistent with the tracheal function in oxygen transport, as mitochondria require oxygen to generate ATP. The mitochondria in ommatidia have also been reported to be predominantly localized to the periphery sites of the photoreceptors [48,50,51], but not in the surrounding pigment cells.…”

Section: Resultsmentioning

confidence: 99%

FGF /FGFR Signal Induces Trachea Extension in the Drosophila Visual System

2013

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“…Photostable screening pigments in the eye fundamentally function as pupils, which attenuate light influx upon light adaptation [34, 35]. In some cases, colorful perirhabdomal pigments should be regarded as serving a modified function: creating a greater variety of spectrally dissimilar photoreceptors in order to improve color discrimination ability [2, 36].…”

Section: Discussionmentioning

confidence: 99%

Red-shift of spectral sensitivity due to screening pigment migration in the eyes of a moth, Adoxophyes orana

et al. 2017

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BackgroundWe have found that the spectral sensitivity of the compound eye in the summer fruit tortrix moth (Adoxophyes orana) differs in laboratory strains originating from different regions of Japan. We have investigated the mechanisms underlying this anomalous spectral sensitivity.MethodsWe applied electrophysiology, light and electron microscopy, opsin gene cloning, mathematical modeling, and behavioral analysis.ResultsThe ERG-determined spectral sensitivity of dark-adapted individuals of all strains peaks around 520 nm. When light-adapted, the spectral sensitivity of the Nagano strain narrows and its peak shifts to 580 nm, while that in other strains remains unchanged. All tested strains appear to be identical in terms of the basic structure of the eye, the pigment migration in response to light- and dark-adaptation, and the molecular structure of long-wavelength absorbing visual pigments. However, the color of the perirhabdomal pigment clearly differs; it is orange in the Nagano strain and purple in the others. The action spectrum of phototaxis appears to be shifted towards longer wavelengths in the Nagano individuals.ConclusionsThe spectral sensitivities of light-adapted eyes can be modeled under the assumption that this screening pigment plays a crucial role in determining the spectral sensitivity. The action spectrum of phototaxis indicates that the change in the eye spectral sensitivity is behaviorally relevant.

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“…To investigate stoichiometry we exploited the bistable, photointerconvertible pigment system of Drosophila, in which the number of M molecules can be accurately and reversibly controlled by the wavelength of illumination, with short wavelength (blue) light favouring R to M photoisomerization and long wavelength (e.g. orange) light photoreconverting M to R (see Figure 3A, reviewed in Hillman et al, 1983; Stavenga, 1996). Our results support a diffusion model for Drosophila by showing that translocation is rapidly and reversibly driven by stoichiometric binding to M without requirement for NINAC.…”

Section: Introductionmentioning

confidence: 99%

Arrestin Translocation Is Stoichiometric to Rhodopsin Isomerization and Accelerated by Phototransduction in Drosophila Photoreceptors

Satoh

Xia

Lin

et al. 2010

Neuron

101

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Upon illumination visual arrestin translocates from photoreceptor cell bodies to rhodopsin and membrane-rich photosensory compartments - vertebrate outer segments or invertebrate rhabdomeres - where it quenches activated rhodopsin. Both the mechanism and function of arrestin translocation are unresolved and controversial. In dark-adapted photoreceptors of the fruitfly Drosophila, confocal immunocytochemistry shows arrestin (Arr2) associated with distributed photoreceptor endomembranes. Immunocytochemistry and live imaging of GFP-tagged Arr2 demonstrate rapid reversible translocation to stimulated rhabdomeres in stoichiometric proportion to rhodopsin photoisomerization. Translocation is very rapid in normal photoreceptors (time constant <10 s), and can also be resolved in the time course of electroretinogram recordings. Genetic elimination of key phototransduction proteins, including phospholipase C (PLC), Gq and the light-sensitive Ca2+ permeable TRP channels, slows translocation by 10-100 fold. Our results indicate that Arr2 translocation in Drosophila photoreceptors is driven by diffusion, but profoundly accelerated by phototransduction and Ca2+ influx.

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Insect retinal pigments: Spectral characteristics and physiological functions

Cited by 37 publications

References 136 publications

FGF /FGFR Signal Induces Trachea Extension in the Drosophila Visual System

FGF /FGFR Signal Induces Trachea Extension in the Drosophila Visual System

Red-shift of spectral sensitivity due to screening pigment migration in the eyes of a moth, Adoxophyes orana

Arrestin Translocation Is Stoichiometric to Rhodopsin Isomerization and Accelerated by Phototransduction in Drosophila Photoreceptors

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