1. Dermal morphogenesis controls lateral line patterning during postembryonic development of teleost fish
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Wada, Hironori, Ghysen, Alain, Satou, Chie, Higashijima, Shin-Ichi, Kawakami, Koichi, Hamaguchi, Satoshi, and Sakaizumi, Mitsuru
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Developmental biology ,Biological sciences - Abstract
To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.ydbio.2010.02.017 Byline: Hironori Wada (a), Alain Ghysen (b), Chie Satou (c), Shin-ichi Higashijima (c), Koichi Kawakami (d)(e), Satoshi Hamaguchi (f), Mitsuru Sakaizumi (a)(f) Keywords: Lateral line; Neuromast; Postembryonic development; Dermal bone; Opercle; Scale; Zebrafish; Medaka Abstract: The lateral line system displays highly divergent patterns in adult teleost fish. The mechanisms underlying this variability are poorly understood. Here, we demonstrate that the lateral line mechanoreceptor, the neuromast, gives rise to a series of accessory neuromasts by a serial budding process during postembryonic development in zebrafish. We also show that accessory neuromast formation is highly correlated to the development of underlying dermal structures such as bones and scales. Abnormalities in opercular bone morphogenesis, in endothelin 1-knockdown embryos, are accompanied by stereotypic errors in neuromast budding and positioning, further demonstrating the tight correlation between the patterning of neuromasts and of the underlying dermal bones. In medaka, where scales form between peridermis and opercular bones, the lateral line displays a scale-specific pattern which is never observed in zebrafish. These results strongly suggest a control of postembryonic neuromast patterns by underlying dermal structures. This dermal control may explain some aspects of the evolution of lateral line patterns. Author Affiliation: (a) Center for Transdisciplinary Research, Niigata University, Igarashi 2, Nishi-ku, Niigata 950-2181, Japan (b) Laboratory of Neurogenetics, INSERM U881, cc 103, Universite Montpellier 2, Place Bataillon, 34095 Montpellier, France (c) National Institutes of Natural Sciences, Okazaki Institute for Integrative Bioscience, National Institute for Physiological Sciences, Higashiyama 5-1, Myodaiji, Okazaki, Aichi 444-8787, Japan (d) Division of Molecular and Developmental Biology, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka 411-8540, Japan (e) Department of Genetics, The Graduate University for Advanced Studies (SOKENDAI), 1111 Yata, Mishima, Shizuoka 411-8540, Japan (f) Department of Environmental Sciences, Faculty of Science, Niigata University, Igarashi 2, Nishi-ku, Niigata 950-2181, Japan Article History: Received 10 September 2009; Revised 10 February 2010; Accepted 10 February 2010
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- 2010