Evolution of the brain developmental plan: Insights from agnathans

In vertebrate evolution, the brain exhibits both conserved and unique morphological features in each animal group. Thus, the molecular program of nervous system development is expected to have experienced various changes through evolution. In this review, we discuss recent data from the agnathan lam...

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Veröffentlicht in:	Developmental biology 2005-04, Vol.280 (2), p.249-259
Hauptverfasser:	Murakami, Yasunori, Uchida, Katsuhisa, Rijli, Filippo M., Kuratani, Shigeru
Format:	Artikel
Sprache:	eng
Schlagworte:	Amphioxus Animals Biochemistry, Molecular Biology Biological Evolution Brain Brain - embryology Cerebellum Cerebellum - embryology Embryonic Development Evolution Evolution, Molecular Gene Expression Regulation, Developmental Genes, Homeobox Genes, Homeobox - genetics Hindbrain Hox genes Lamprey Lampreys Life Sciences Models, Biological Molecular biology Nervous System Nervous System - embryology Regulatory genes Rhombencephalon Rhombencephalon - embryology Telencephalon Telencephalon - embryology Time Factors Vertebrates
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Zusammenfassung:	In vertebrate evolution, the brain exhibits both conserved and unique morphological features in each animal group. Thus, the molecular program of nervous system development is expected to have experienced various changes through evolution. In this review, we discuss recent data from the agnathan lamprey (jawless vertebrate) together with available information from amphioxus and speculate the sequence of changes during chordate evolution that have been brought into the brain developmental plan to yield the current variety of the gnathostome (jawed vertebrate) brains.
ISSN:	0012-1606 1095-564X
DOI:	10.1016/j.ydbio.2005.02.008