Table 1

Induction methods for RNAi by feeding


Non-Ind
Ind (1)
Ind (2)
Ind (3)
Ind (4)
Test gene
n
% Phe
n
% Phe
n
% Phe
n
% Phe
n
% Phe

gpb-1
546
0
530
100
309
84
442
97
346
0
unc-22
422
0
255
99
179
80
ND
ND
ND
ND
par-1
ND
ND
313
100
263
100
ND
ND
ND
ND
par-3
ND
ND
391
96
325
11
ND
ND
ND
ND

Four different methods were compared to determine optimal induction conditions for RNAi; non-induced (Non-Ind) bacteria were also included for comparison. Induction conditions (Ind) were as follows: (1) Bacteria were induced on plates with IPTG at room temperature overnight; (2) bacteria were induced in culture at 37°C for 2 h; (3) bacteria were induced on plates with IPTG at 37°C overnight; (4) bacteria were induced in culture at 37°C overnight (see the Materials and methods section for detailed protocols). gpb-1, par-1 and par-3 were scored for percentage of dead embryos, unc-22 was scored for percentage of worms with an uncoordinated phenotype. Data shown represent the progeny of three fed worms. ND, not done; n is the number of worms or embryos scored; %Phe, percentage of worms or embryos with phenotype.

Kamath et al. Genome Biology 2000 2:research0002.1   doi:10.1186/gb-2000-2-1-research0002