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Mutations affecting neurogenesis and brain morphology in the zebrafish, Danio rerio

MPS-Authors
/persons/resource/persons274433

Jiang,  Y-J
Department Genetics, Max Planck Institute for Developmental Biology, Max Planck Society;

/persons/resource/persons219033

Brand,  M       
Department Genetics, Max Planck Institute for Developmental Biology, Max Planck Society;

/persons/resource/persons219231

Heisenberg,  C-P
Department Genetics, Max Planck Institute for Developmental Biology, Max Planck Society;

/persons/resource/persons277769

Beuchle,  D
Department Genetics, Max Planck Institute for Developmental Biology, Max Planck Society;

/persons/resource/persons274429

Furutani-Seiki,  M
Department Genetics, Max Planck Institute for Developmental Biology, Max Planck Society;

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Kelsh,  RN       
Department Genetics, Max Planck Institute for Developmental Biology, Max Planck Society;

/persons/resource/persons274441

Warga,  RM
Department Genetics, Max Planck Institute for Developmental Biology, Max Planck Society;

/persons/resource/persons274425

Granato,  M
Department Genetics, Max Planck Institute for Developmental Biology, Max Planck Society;

/persons/resource/persons274411

Haffter,  P
Department Genetics, Max Planck Institute for Developmental Biology, Max Planck Society;

/persons/resource/persons191086

Hammerschmidt,  M
Department Genetics, Max Planck Institute for Developmental Biology, Max Planck Society;

/persons/resource/persons274435

Kane,  DA
Department Genetics, Max Planck Institute for Developmental Biology, Max Planck Society;

/persons/resource/persons274439

Mullins,  MC
Department Genetics, Max Planck Institute for Developmental Biology, Max Planck Society;

/persons/resource/persons274416

Odenthal,  J
Department Genetics, Max Planck Institute for Developmental Biology, Max Planck Society;

/persons/resource/persons274409

van Eeden,  FJM
Department Genetics, Max Planck Institute for Developmental Biology, Max Planck Society;

/persons/resource/persons271460

Nüsslein-Volhard,  C
Department Genetics, Max Planck Institute for Developmental Biology, Max Planck Society;

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Citation

Jiang, Y.-J., Brand, M., Heisenberg, C.-P., Beuchle, D., Furutani-Seiki, M., Kelsh, R., et al. (1996). Mutations affecting neurogenesis and brain morphology in the zebrafish, Danio rerio. Development, 123(1), 205-216. doi:10.1242/dev.123.1.205.


Cite as: https://hdl.handle.net/21.11116/0000-000D-6F98-C
Abstract
In a screen for embryonic mutants in the zebrafish a large number of mutants were isolated with abnormal brain morphology. We describe here 26 mutants in 13 complementation groups that show abnormal development of large regions of the brain. Early neurogenesis is affected in white tail (wit). During segmentation stages, homozygous wit embryos display an irregularly formed neural keel, particularly in the hindbrain. Using a variety of molecular markers, a severe increase in the number of various early differentiating neurons can be demonstrated. In contrast, late differentiating neurons, radial glial cells and some nonneural cell types, such as the neural crest-derived melanoblasts, are much reduced. Somitogenesis appears delayed. In addition, very reduced numbers of melanophores are present posterior to the mid-trunk. The wit phenotype is reminiscent of neurogenic mutants in Drosophila, such as Notch or Delta. In mutant parachute (pac) embryos the general organization of the hindbrain is disturbed and many rounded cells accumulate loosely in the hindbrain and midbrain ventricles. Mutants in a group of 6 genes, snakehead(snk), natter (nat), otter (ott), fullbrain (ful), viper (vip) and white snake (wis) develop collapsed brain ventricles, before showing signs of general degeneration. atlantis (atl), big head (bid), wicked brain (win), scabland (sbd) and eisspalte (ele) mutants have different malformation of the brain folds. Some of them have transient phenotypes, and mutant individuals may grow up to adults.