Knockdown of haao-1 does not prevent polyglutamine aggregation at 15 °C. (a) haao-1 knockdown did not affect the number of YFP-labeled muscle polyglutamine (Q35::YFP) protein aggregates at 15 °C, similar to our previous report for knockdown of tdo-2 or kynu-1 [23]. (b) haao-1 knockdown did not affect the volume of Q35::YFP protein aggregates at 15 °C, unlike our previous report for knockdown of tdo-2, which reduced Q35::YFP aggregate volume at all ages examined, or kynu-1, which reduced Q35::YFP volume in mid-life [23]. (c) Representative images of Q35::YFP aggregation in each test group and age at 15 °C. * p < 0.05 for two-sided Welch’s t-test vs. age-matched EV(RNAi).