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Assembly of the cnidarian camera-type eye from vertebrate-like components
Z. Kozmik, J. Růžičková, K. Jonášová, Y Matsumoto, P. Vopálenský, I. Kozmiková, H. Strnad, S. Kawamura, J. Piatigorsky, V. Pačes, Č. Vlček
Language English Country United States
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from 1915 to 6 months ago
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from 1915 to 6 months ago
PubMed Central
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from 1915-01-01
Open Access Digital Library
from 1915-01-15
- MeSH
- Models, Biological MeSH
- Chlorocebus aethiops MeSH
- Cilia metabolism ultrasonography MeSH
- COS Cells MeSH
- Cubozoa growth & development MeSH
- Financing, Organized MeSH
- Photoreceptor Cells, Invertebrate cytology metabolism ultrastructure MeSH
- Crystallins metabolism MeSH
- Melanins metabolism MeSH
- RNA, Messenger MeSH
- Molecular Sequence Data MeSH
- Vertebrates growth & development MeSH
- Eye cytology growth & development ultrastructure MeSH
- Lens, Crystalline metabolism MeSH
- Pigmentation MeSH
- Gene Expression Regulation genetics MeSH
- Sequence Homology, Nucleic Acid MeSH
- Microphthalmia-Associated Transcription Factor genetics metabolism MeSH
- Rod Opsins metabolism MeSH
- Vision, Ocular genetics MeSH
- Animals MeSH
- Check Tag
- Animals MeSH
Animal eyes are morphologically diverse. Their assembly, however, always relies on the same basic principle, i.e., photoreceptors located in the vicinity of dark shielding pigment. Cnidaria as the likely sister group to the Bilateria are the earliest branching phylum with a well developed visual system. Here, we show that camera-type eyes of the cubozoan jellyfish, Tripedalia cystophora, use genetic building blocks typical of vertebrate eyes, namely, a ciliary phototransduction cascade and melanogenic pathway. Our findings indicative of parallelism provide an insight into eye evolution. Combined, the available data favor the possibility that vertebrate and cubozoan eyes arose by independent recruitment of orthologous genes during evolution.
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