ArticleFrontiers in physiology2014
Elementary and macroscopic light-induced currents and their Ca(2+)-dependence in the photoreceptors of Periplaneta americana.
Article in Frontiers in physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 21 citations in OpenAlex.
- Suppression of Gq and PLC gene expression has a small effect on quantum bumps in vivo in Periplaneta americana.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2020Article
- Electrophysiological adaptations of insect photoreceptors and their elementary responses to diurnal and nocturnal lifestyles.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2020Article
- Exploration of the Effect of Blue Light on Functional Metabolite Accumulation in Longan Embryonic Calli via RNA Sequencing.International journal of molecular sciences · 2019Article
- Phenotypic plasticity inThe Journal of general physiology · 2018Article
- EAG channels expressed in microvillar photoreceptors are unsuited to diurnal vision.The Journal of physiology · 2017Article
- Insect photoreceptor adaptations to night vision.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2017Review
- Distinct roles of light-activated channels TRP and TRPL in photoreceptors ofThe Journal of general physiology · 2017Article
- Visual ecology and potassium conductances of insect photoreceptors.Journal of neurophysiology · 2016Article
- Static and Dynamic Adaptation of Insect Photoreceptor Responses to Naturalistic Stimuli.Frontiers in physiology · 2016Article
- Transcriptome analysis and RNA interference of cockroach phototransduction indicate three opsins and suggest a major role for TRPL channels.Frontiers in physiology · 2015Article
- Large variation among photoreceptors as the basis of visual flexibility in the common backswimmer.Proceedings. Biological sciences · 2014Article
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In a microvillar photoreceptor, absorption of an incident photon initiates a phototransduction reaction that generates a depolarizing light-induced current (LIC) in the microvillus. Although in-depth knowledge about these processes in photoreceptors of the fruitfly Drosophila is available, not much is known about their nature in other insect species. Here, we present description of some basic properties of both elementary and macroscopic LICs and their Ca(2+)-dependence in the photoreceptors of a dark-active species, the cockroach Periplaneta americana. Cockroach photoreceptors respond to single photon absorptions by generating quantum bumps with about 5-fold larger amplitudes than in Drosophila. At the macroscopic current level, cockroach photoreceptors responded to light with variable sensitivity and current waveform. This variability could be partially attributed to differences in whole-cell capacitance. Transient LICs, both elementary and macroscopic, showed only moderate dependence on extracellular Ca(2+). However, with long light pulses, response inactivation was largely abolished and the overall size of LICs increased when extracellular Ca(2+) was omitted. Finally, by determining relative ionic permeabilities from reversals of LICs, we demonstrate that when compared to Drosophila, cockroach light-gated channels are only moderately Ca(2+)-selective.
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