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Sea Urchin Larvae Utilize Light for Regulating the Pyloric Opening by Yaguchi, Junko (author);Yaguchi, Shunsuke (author) is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is Sea Urchin Larvae Utilize Light for Regulating the Pyloric Opening about?

## Background Light is essential for various biological activities. In particular, visual information through eyes or eyespots is very important for most of animals, and thus, the functions and developmental mechanisms of visual systems have been well studied to date. In addition, light-dependent non-visual systems expressing photoreceptor Opsins have been used to study the effects of light on diverse animal behaviors. However, it remains unclear how light-dependent systems were acquired and diversified during deuterostome evolution due to an almost complete lack of knowledge on the light-response signaling pathway in Ambulacraria, one of the major groups of deuterostomes and a sister group of chordates. ## Results Here, we show that sea urchin larvae utilize light for digestive tract activity. We found that photoirradiation of larvae induces pyloric opening even without addition of food stimuli. Micro-surgical and knockdown experiments revealed that this stimulating light is received and mediated by Go(/RGR)-Opsin (Opsin3.2 in sea urchin genomes) cells around the anterior neuroectoderm. Furthermore, we found that the anterior neuroectodermal serotoninergic neurons near Go-Opsin-ex

Who reads Sea Urchin Larvae Utilize Light for Regulating the Pyloric Opening?

Author

Yaguchi, Junko (author);Yaguchi, Shunsuke (author)

Publisher

Springer Science and Business Media LLC

Published

2021

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)