ZFIN ID: ZDB-FIG-070620-36
Holtzman et al., 2007 - Endocardium is necessary for cardiomyocyte movement during heart tube assembly. Development (Cambridge, England)   134(13):2379-2386 Full text @ Development
Anatomical Term:
Stage: Prim-5
Observed In:
Stage: Prim-5

Fig. 2 No angular movement in the absence of endocardium. (A,B) Selected images from a time-lapse of cardiac fusion in a typical clo mutant zebrafish embryo expressing Tg(cmlc2:egfp) (see Movie 2 in the supplementary material), exhibiting cardiac morphology at the (A) 17-somite and (B) 20-somite stages. Dorsal views, anterior to the top. (C-E) Paths traveled during the (C,D) entire 90 minutes and (E) final 20 minutes of fusion (arrows and asterisks as described for Fig. 1). Tracks displayed represent a subset of the tracked cells in this time-lapse. In clo mutants, cardiomyocytes exhibit medial movement throughout the duration of cardiac fusion. Scale bar: in E, 20 μm for A-E. (F) Radial bar graph (see Fig. 1J,L) depicting degree of displacement for all tracked clo mutant cardiomyocytes. Few cells exhibit angular movement, resembling the pattern of cell behavior observed during the first phase of wild-type fusion (see Fig. 1J). (G,H) Location of cardiomyocytes moving angularly in clo mutants. In anterior (purple) and posterior (blue) regions (), the percentage of cells moving angularly is significantly reduced (t-test, P<0.01) compared with that observed during the second phase of wild-type fusion (see Fig. 1M). See Table 1 for additional data. (I,J) In situ hybridization depicts cmlc2 expression in wild-type (I) and clo mutant (J) embryos at 28 hpf. Dorsal views, anterior to the top; both images shown at the same magnification. Elongation of the heart tube is delayed and aberrant in clo mutant embryos.

Gene Expression Details
Gene Antibody Fish Conditions Stage Anatomy Assay
myl7 WT standard conditions Prim-5 heart tube ISH
npas4ls5/s5 standard conditions Prim-5 heart tube ISH
Antibody Labeling Details No data available
Phenotype Details
Fish Conditions Stage Phenotype
npas4ls5/s5 standard conditions Prim-5 heart tube decreased length, abnormal
Prim-5 heart tube increased width, abnormal
This image is the copyrighted work of the attributed author or publisher, and ZFIN has permission only to display this image to its users. Additional permissions should be obtained from the applicable author or publisher of the image. Full text @ Development