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. 2008 Feb 15;4(2):e24. doi: 10.1371/journal.pgen.0040024

Figure 6. Increased Autophagy in daf-2/insulin/IGF Receptor Mutants Is Independent of the daf-16/FOXO and pha-4/FOXA Transcription Factors.

Figure 6

(A) Average number of LGG-1::GFP-containing puncta in daf-2(e1370) progeny of animals fed either control bacteria or bacteria expressing bec-1, vps-34, or pha-4 dsRNA for their entire lives. p < 0.0001 for bec-1 and vps-34 RNAi-bacteria compared to control RNAi-bacteria, respectively, p = 0.17 for pha-4 RNAi-bacteria compared to control RNAi-bacteria, unpaired, two-tailed t-test. n, total number of seam cells observed. Error bars: ±SEM. See Figure 1 for details. Feeding daf-2 mutants for several generations with pha-4 dsRNA sharply decreased the number of eggs laid (data not shown). The mean lifespan of daf-2(e1370) animals was shortened 12.5% by pha-4 RNAi ([28] and data not shown), and we measured an 11% decrease in puncta in daf-2(e1370) animals fed pha-4 RNAi. Even though this decrease was not statistically significant it remains possible that it relates to the small difference seen in lifespan.

(B) Average number of LGG-1::GFP-containing puncta in daf-16(mu86); daf-2(e1370) double mutants compared to daf-2(e1370) animals; p = 0.50, unpaired, two-tailed t-test. N2 wild-type animals (WT) are shown for comparison. n, total number of seam cells observed. Error bars: ±SEM. See Figure 1 for details. The double mutant expressing the LGG-1 reporter had a mean lifespan similar to non-transgenic daf-16; daf-2 double mutants (data not shown, [65]). Please see Table S1 for quantification of all data.