Mutations affecting somite formation and patterning in the zebrafish, Danio rerio

F J M vanEeden, M Granato, U Schach, M Brand, Makoto Furutani-Seiki, P Haffter, M Hammerschmidt, C P Heisenberg, Y J Jiang, D A Kane, R N Kelsh, M C Mullins, J Odenthal, R M Warga, M L Allende, E S Weinberg, C NussleinVolhard

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Abstract

Somitogenesis is the basis of segmentation of the mesoderm in the trunk and tail of vertebrate embryos, Two groups of mutants with defects in this patterning process have been isolated in our screen for zygotic mutations affecting the embryonic development of the zebrafish (Danio rerio), In mutants of the first group, boundaries between individual somites are invisible early on, although the paraxial mesoderm is present, Later, irregular boundaries between somites are present, Mutations infused somites (fss) and beamter (bea) affect all somites, whereas mutations in deadly seven (des), after eight (aei) and white tail (wit) only affect the more posterior somites, Mutants of all genes but wit are homozygous viable and fertile, Skeletal stainings and the expression pattern of myoD and snail1 suggest that anteroposterior patterning within individual somites is abnormal, In the second group of mutants, formation of the horizontal myoseptum, which separates the dorsal and ventral part of the myotome, is reduced, Six genes have been defined in this group (you-type genes), yea-too mutants show the most severe phenotype; in these the adaxial cells, muscle pioneers and the primary motoneurons are affected, in addition to the horizontal myoseptum. The horizontal myoseptum is also missing in mutants that lack a notochord. The similarity of the somite phenotype in mutants lacking the notochord and in the you-type mutants suggests that the genes mutated in these two groups are involved in a signaling pathway from the notochord, important for patterning of the somites.
Original languageEnglish
Pages (from-to)153-164
Number of pages12
JournalDevelopment
Volume123
Publication statusPublished - 1996

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Somites
Zebrafish
Mutation
Notochord
Tail
Mesoderm
Genes
Phenotype
Motor Neurons
Muscle Cells
Embryonic Development
Vertebrates
Embryonic Structures
Staining and Labeling

Keywords

  • somitogenesis
  • muscle pioneers
  • zebrafish
  • adaxial cells

Cite this

vanEeden, F. J. M., Granato, M., Schach, U., Brand, M., Furutani-Seiki, M., Haffter, P., ... NussleinVolhard, C. (1996). Mutations affecting somite formation and patterning in the zebrafish, Danio rerio. Development, 123, 153-164.

Mutations affecting somite formation and patterning in the zebrafish, Danio rerio. / vanEeden, F J M; Granato, M; Schach, U; Brand, M; Furutani-Seiki, Makoto; Haffter, P; Hammerschmidt, M; Heisenberg, C P; Jiang, Y J; Kane, D A; Kelsh, R N; Mullins, M C; Odenthal, J; Warga, R M; Allende, M L; Weinberg, E S; NussleinVolhard, C.

In: Development, Vol. 123, 1996, p. 153-164.

Research output: Contribution to journalArticle

vanEeden, FJM, Granato, M, Schach, U, Brand, M, Furutani-Seiki, M, Haffter, P, Hammerschmidt, M, Heisenberg, CP, Jiang, YJ, Kane, DA, Kelsh, RN, Mullins, MC, Odenthal, J, Warga, RM, Allende, ML, Weinberg, ES & NussleinVolhard, C 1996, 'Mutations affecting somite formation and patterning in the zebrafish, Danio rerio', Development, vol. 123, pp. 153-164.
vanEeden FJM, Granato M, Schach U, Brand M, Furutani-Seiki M, Haffter P et al. Mutations affecting somite formation and patterning in the zebrafish, Danio rerio. Development. 1996;123:153-164.
vanEeden, F J M ; Granato, M ; Schach, U ; Brand, M ; Furutani-Seiki, Makoto ; Haffter, P ; Hammerschmidt, M ; Heisenberg, C P ; Jiang, Y J ; Kane, D A ; Kelsh, R N ; Mullins, M C ; Odenthal, J ; Warga, R M ; Allende, M L ; Weinberg, E S ; NussleinVolhard, C. / Mutations affecting somite formation and patterning in the zebrafish, Danio rerio. In: Development. 1996 ; Vol. 123. pp. 153-164.
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abstract = "Somitogenesis is the basis of segmentation of the mesoderm in the trunk and tail of vertebrate embryos, Two groups of mutants with defects in this patterning process have been isolated in our screen for zygotic mutations affecting the embryonic development of the zebrafish (Danio rerio), In mutants of the first group, boundaries between individual somites are invisible early on, although the paraxial mesoderm is present, Later, irregular boundaries between somites are present, Mutations infused somites (fss) and beamter (bea) affect all somites, whereas mutations in deadly seven (des), after eight (aei) and white tail (wit) only affect the more posterior somites, Mutants of all genes but wit are homozygous viable and fertile, Skeletal stainings and the expression pattern of myoD and snail1 suggest that anteroposterior patterning within individual somites is abnormal, In the second group of mutants, formation of the horizontal myoseptum, which separates the dorsal and ventral part of the myotome, is reduced, Six genes have been defined in this group (you-type genes), yea-too mutants show the most severe phenotype; in these the adaxial cells, muscle pioneers and the primary motoneurons are affected, in addition to the horizontal myoseptum. The horizontal myoseptum is also missing in mutants that lack a notochord. The similarity of the somite phenotype in mutants lacking the notochord and in the you-type mutants suggests that the genes mutated in these two groups are involved in a signaling pathway from the notochord, important for patterning of the somites.",
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T1 - Mutations affecting somite formation and patterning in the zebrafish, Danio rerio

AU - vanEeden, F J M

AU - Granato, M

AU - Schach, U

AU - Brand, M

AU - Furutani-Seiki, Makoto

AU - Haffter, P

AU - Hammerschmidt, M

AU - Heisenberg, C P

AU - Jiang, Y J

AU - Kane, D A

AU - Kelsh, R N

AU - Mullins, M C

AU - Odenthal, J

AU - Warga, R M

AU - Allende, M L

AU - Weinberg, E S

AU - NussleinVolhard, C

PY - 1996

Y1 - 1996

N2 - Somitogenesis is the basis of segmentation of the mesoderm in the trunk and tail of vertebrate embryos, Two groups of mutants with defects in this patterning process have been isolated in our screen for zygotic mutations affecting the embryonic development of the zebrafish (Danio rerio), In mutants of the first group, boundaries between individual somites are invisible early on, although the paraxial mesoderm is present, Later, irregular boundaries between somites are present, Mutations infused somites (fss) and beamter (bea) affect all somites, whereas mutations in deadly seven (des), after eight (aei) and white tail (wit) only affect the more posterior somites, Mutants of all genes but wit are homozygous viable and fertile, Skeletal stainings and the expression pattern of myoD and snail1 suggest that anteroposterior patterning within individual somites is abnormal, In the second group of mutants, formation of the horizontal myoseptum, which separates the dorsal and ventral part of the myotome, is reduced, Six genes have been defined in this group (you-type genes), yea-too mutants show the most severe phenotype; in these the adaxial cells, muscle pioneers and the primary motoneurons are affected, in addition to the horizontal myoseptum. The horizontal myoseptum is also missing in mutants that lack a notochord. The similarity of the somite phenotype in mutants lacking the notochord and in the you-type mutants suggests that the genes mutated in these two groups are involved in a signaling pathway from the notochord, important for patterning of the somites.

AB - Somitogenesis is the basis of segmentation of the mesoderm in the trunk and tail of vertebrate embryos, Two groups of mutants with defects in this patterning process have been isolated in our screen for zygotic mutations affecting the embryonic development of the zebrafish (Danio rerio), In mutants of the first group, boundaries between individual somites are invisible early on, although the paraxial mesoderm is present, Later, irregular boundaries between somites are present, Mutations infused somites (fss) and beamter (bea) affect all somites, whereas mutations in deadly seven (des), after eight (aei) and white tail (wit) only affect the more posterior somites, Mutants of all genes but wit are homozygous viable and fertile, Skeletal stainings and the expression pattern of myoD and snail1 suggest that anteroposterior patterning within individual somites is abnormal, In the second group of mutants, formation of the horizontal myoseptum, which separates the dorsal and ventral part of the myotome, is reduced, Six genes have been defined in this group (you-type genes), yea-too mutants show the most severe phenotype; in these the adaxial cells, muscle pioneers and the primary motoneurons are affected, in addition to the horizontal myoseptum. The horizontal myoseptum is also missing in mutants that lack a notochord. The similarity of the somite phenotype in mutants lacking the notochord and in the you-type mutants suggests that the genes mutated in these two groups are involved in a signaling pathway from the notochord, important for patterning of the somites.

KW - somitogenesis

KW - muscle pioneers

KW - zebrafish

KW - adaxial cells

M3 - Article

VL - 123

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EP - 164

JO - Development

JF - Development

SN - 0950-1991

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