Multiple ancestral and a plethora of recent gene duplications during the evolution of the green sensitive opsin genes (<i>RH2</i>) in teleost fishes

Musilová, Zuzana; Cortesi, Fabio

doi:10.1101/2021.05.11.443711

Cited by 10 publications

(9 citation statements)

References 40 publications

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“…To consider the evolutionary history of visual pigments, a comparative analysis of the molecular structure of opsins is widely applied (Carleton et al ., 2020; Cortesi et al ., 2015; Lin et al ., 2017; Minamoto & Shimizu, 2005; Musilova & Cortesi, 2021; Yokoyama, 2000). Nonetheless, the structure and molecular type of the opsin do not always indicate λ max of the visual pigments (Isayama & Makino, 2012; Kondrashev et al ., 2013; Mitchell et al ., 2021).…”

Section: Introductionmentioning

confidence: 99%

“…nos. NRM004260, KP004256; Cortesi et al ., 2015; Musilova & Cortesi, 2021). In M. villosus , the RH2 gene sequence was found after whole genome mining (Musilova & Cortesi, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…NRM004260, KP004256; Cortesi et al ., 2015; Musilova & Cortesi, 2021). In M. villosus , the RH2 gene sequence was found after whole genome mining (Musilova & Cortesi, 2021). In earlier MSP studies on the Pacific rainbow smelt Osmerus dentex Steindachner & Kner 1870, the absorbance spectra of visual pigments of rods and cones were described (Kondrashev et al ., 2017).…”

Section: Introductionmentioning

confidence: 99%

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Photoreceptors, visual pigments and intraretinal variability in spectral sensitivity in two species of smelts (Pisces, Osmeridae)

Kondrashev

2022

Journal of Fish Biology

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The main goal of this study was to clarify whether the spectral properties of retinal photoreceptors reflect the features of behaviour of closely related fish species cohabiting shallow marine and fresh waters. The spectral sensitivity of photoreceptors was compared between two smelt species, Hypomesus japonicus and Japanese smelt Hypomesus nipponensis. The spectral absorption of the visual pigments was measured using microspectrophotometry. In H. japonicus, a mostly marine species, all photoreceptors contained visual pigments based on retinal and were distributed differently in specific retinal areas. The absorbance maxima (λ max ) of rods and long-wavesensitive members of double cones throughout the retina amounted to 507 and 573 nm, respectively, but the λ max value of the short-wave-sensitive members of double cones and single cones in the temporal hemiretina showed a significant blue shift compared to the nasal hemiretina: 485 vs. 516 nm and 375 vs. 412 nm, respectively, thus enhancing the short-wave sensitivity of the temporal hemiretina. In H. nipponensis, an euryhaline species, the estimated λ max value of both rods and cones significantly varied between the groups caught in different localities (sea, river or estuary) because of the presence of rhodopsin/porphyropsin mixtures. The longwavelength shift in rod and cone photoreceptors was observed because of changes in the chromophore complement in closely related but ecologically different species dwelling in freshened bodies of water. Considering the data available in the literature, several putative common opsin genes have been suggested for species under study.

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Section: Introductionmentioning

confidence: 99%

“…nos. NRM004260, KP004256; Cortesi et al ., 2015; Musilova & Cortesi, 2021). In M. villosus , the RH2 gene sequence was found after whole genome mining (Musilova & Cortesi, 2021).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Photoreceptors, visual pigments and intraretinal variability in spectral sensitivity in two species of smelts (Pisces, Osmeridae)

Kondrashev

2022

Journal of Fish Biology

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“…In clear waters the blue-green light spectrum dominates, especially as depth increases, while in shallower or turbid waters red- shifted light conditions prevail. Comparative genomic studies indicate that fish living in marine habitats dominated by green-blue light (e.g., in the deep sea, the pelagic open ocean, or in coral reefs at night) commonly show gene copy expansions of opn1mw (RH2) respect to fish living in shallower (<30 m) or more turbid waters (Lin et al, 2017; Musilova & Cortesi, 2021). Indeed, the horse mackerel has five tandem copies of green-light opsins, which might relate to their preferred habitat at deeper waters (100–200 m depth) (Brunel et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

The genomic basis and environmental correlates of local adaptation in the Atlantic horse mackerel (Trachurus trachurus)

Fuentes‐Pardo

Farrell²,

Pettersson

et al. 2022

Preprint

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Understanding how populations adapt to local environments is increasingly important to prevent biodiversity loss due to climate change. Here we examined whole-genome variation of twelve Atlantic horse mackerel samples from the North Sea to North Africa, and the western Mediterranean Sea. This marine migratory benthopelagic fish is one of the most widely distributed and commercially important species in the eastern Atlantic. We found low population structure at neutral loci, but high differentiation at adaptive loci distinguishing the western Mediterranean and the North Sea populations from other Atlantic locations. Candidate genes distinctive of the Mediterranean include a green-sensitive-opsin harbouring two missense mutations that might fine-tune the spectral sensitivity to blue-green light conditions. Candidate genes characteristic of the North Sea could play a critical role in cold tolerance (energy metabolism and cell membrane structure) and increased sensitivity to odours, presumably to compensate reduced visibility in turbid waters. We also discovered a putative chromosomal inversion (9.9 Mb) that follows a climate-related latitudinal cline with a break near mid Portugal. Genome-environment association analysis indicated that seawater-dissolved oxygen concentration and temperature are likely the main environmental drivers of local adaptation. Our genomic data broadly supports the current stock divisions, but recommends revision of the western and southern stock boundaries. We developed a reduced SNP panel that genetically discriminate the North Sea and North Africa from neighbouring populations. Our study highlights the importance of life history and chromosomal inversions in adaptation with gene flow, and the complexity of evolutionary and ecological processes involved in local adaptation.

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“…2019; de Busserolles et al . 2021; Musilova and Cortesi 2021). Developmental changes in holocentrid opsin gene expression correlated well with their switch to a nocturnal, reef-dwelling lifestyle.…”

Section: Discussionmentioning

confidence: 99%

Development of dim-light vision in the nocturnal coral reef fish family, Holocentridae

Fogg

Cortesi

Lecchini

et al. 2022

Preprint

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Developmental changes to the visual systems of animals are often associated with ecological shifts. Reef fishes experience a change in habitat between larval life in the shallow open ocean to juvenile and adult life on the reef. Some species also change their lifestyle over this period and become largely nocturnal. While these ecological transitions are well documented, little is known about the ontogeny of nocturnal reef fish vision. Here, we used histology and transcriptomics to investigate visual development in 12 representative species from both subfamilies, Holocentrinae (squirrelfishes) and Myripristinae (soldierfishes), in the nocturnal coral reef fish family, Holocentridae. Results revealed that the visual systems of holocentrids are initially well-adapted to photopic conditions with pre-settlement larvae having high cone densities, high cone opsin gene expression, a broad cone opsin gene repertoire (8 genes) and a multibank retina (i.e., stacked layers of rods) comprising up to two rod banks. At reef settlement, holocentrids started to invest more in their scotopic visual system and upregulated genes involved in cell differentiation/proliferation. By adulthood, they had well-developed scotopic vision with a rod-dominated multibank retina comprising 5-17 rod banks, increased summation of rods onto ganglion cells, high rod opsin gene expression, reduced cone opsin gene expression and repertoire (1-4 genes) and upregulated phototransduction genes. Finally, although the two subfamilies shared similar ecologies across development, their visual systems diverged after settlement, with Myripristinae investing more in scotopic vision than Holocentrinae. Hence, both ecology and phylogeny likely determine the development of the holocentrid visual system.

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Multiple ancestral and a plethora of recent gene duplications during the evolution of the green sensitive opsin genes (RH2) in teleost fishes

Cited by 10 publications

References 40 publications

Photoreceptors, visual pigments and intraretinal variability in spectral sensitivity in two species of smelts (Pisces, Osmeridae)

Photoreceptors, visual pigments and intraretinal variability in spectral sensitivity in two species of smelts (Pisces, Osmeridae)

The genomic basis and environmental correlates of local adaptation in the Atlantic horse mackerel (Trachurus trachurus)

Development of dim-light vision in the nocturnal coral reef fish family, Holocentridae

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