Table 1

Axon outgrowth and guidance defects in unc-69 mutants


ALM defect (%)






Genotype
B
NR
E
FL

n

Wild type
0
0
0
12

113
unc-69(e602)
12
36
77
84

77
unc-69(e587)
15
45
85
89

80







unc-69(e602) (m+z-)
0
4.3
39
91

70
unc-69(e602)/nDf40 (m+z-)
0
7.2
20
72

69
unc-69(e587) (m+z-)
1.4
7.2
43
87

69
unc-69(e587)/nDf40 (m+z-)
0
8.3
20
82

60







unc-69(e602)*
19
48
62
95

113
unc-69(e602); opEx [P mec -7 ::unc-69]*
1
12
2
5

81
unc-69(e602); opEx [P mec -7 ::unc-69]*
5
9
6
10

79
unc-69(e602); opEx [P mec -7 ::unc-69]*
8
29
0
10

85

AVM defect (%)




Genotype
B
NR
E
FL
V
n

Wild type
0
0
1
8
0
106
unc-69(e602)
32
27
72
73
2.7
77
unc-69(e587)
64
70
86
87
0
80







unc-69(e602) (m+z-)
1.4
4.3
57
86
0
70
unc-69(e602)/nDf40 (m+z-)
0
0
56
80
0
69
unc-69(e587) (m+z-)
2.9
8.8
56
85
0
69
unc-69(e587)/nDf40 (m+z-)
0
3.6
76
95
0
60







unc-69(e602)*
46
67
93
100
ND
113
unc-69(e602); opEx [P mec -7 ::unc-69]*
0
4
4
4
ND
81
unc-69(e602); opEx [P mec -7 ::unc-69]*
8
12
12
23
ND
79
unc-69(e602); opEx [P mec -7 ::unc-69]*
11
21
12
13
ND
85

Neurite outgrowth and guidance defects of mechanosensory touch neurons in unc-69 mutants. The morphology of neurites of ALM (top) and AVM (bottom) neurons (as in the schematic in Figure 2) was scored in different unc-69 mutants, in unc-69/nDf40 heterozygotes, and in mosaic animals carrying a functional unc-69 transgene under the control of the mec-7 promoter, which directs expression in the six touch neurons. All worms scored had a Pmec-4::gfp transgene zdIs5 in the background to allow visualization of the neurite morphology. One ALM neurite was scored per animal. B, failure to form proper branch at the nerve ring; NR, failure of nerve ring branch to fully extend; E: failure to elongate past the branch point; FL, failure to extend fully; V, ventral guidance defect. (m+z-): homozygous mutant animals derived from heterozygous mothers. *These strains also carry a lin-15(n765) mutation in the background. All opEx transgenes also carry a wild-type copy of lin-15(+) as a coinjection marker. ND, not done. n, number of worms scored.

Su et al. Journal of Biology 2006 5:9   doi:10.1186/jbiol39

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