PLST-1 loss and SMA-1 loss have opposite effects on the structural integrity of cyk-1(RNAi) rings. Confocal time-lapse imaging series of cyk-1(RNAi), cyk-1(RNAi);plst-1(prt89), and cyk-1(RNAi);sma-1(ru18) ABa rings labeled with NMY-2::GFP. Time is in seconds and playback rate is 4 frames per second. Scale bar, 5 µm.