New Beginnings: Mitochondrial Renewal by Massive Mitochondrial Fusion
of quality control for mitochondrial
populations in new generations
Figure 1. Massive Mitochondrial Fusion in Three Different Contexts. (A) Freshly isolated tobacco mesophyll protoplasts contain discrete round/oval mitochondria that can be clumped into irregular aggregates. (B) Mitochondria fused into long, tubular structures 4 h after culture. (C) Interphase cell from Arabidopsis stem showing round/oval-shaped mitochondria (green). (D) Prometaphase cell from SAM with individual elongated mitochondria (green) or mitochondria fused into a massive cage-like structure (blue).