“…However, caspase inhibitors can block PCD in plants, and most instances of plant PCD are associated with the induction of caspase-like activities (reviewed in Sanmartín et al, 2005). Caspase-3-like enzymes have been reported to be involved in reproductive processes in plants, such as pollen-pistil interaction in Olea (Serrano et al, 2010), self-incompatibility in Papaver Franklin-Tong, 2007, 2008), suspensor degeneration during embryogenesis in Leguminosae (Wredle et al, 2001;Lombardi et al, 2007;Endo, 2012), cotyledon dismantling during seed germination in Vigna (Egorova et al, 2010) and megagametophyte degeneration post-germination in Araucaria (Casani et al, 2009). In our system (Fig.…”