abolished actomyosin contractile ring assembly abolished actomyosin contractile ring assembly, clumped medial cortical nodes abolished cytokinetic contractile ring assembly, clumped medial cortical nodes abolished cytokinetic ring formation, clumped medial cortical nodes abolished actomyosin contractile ring assembly, clumped cytokinesis nodes abolished contractile ring assembly, clumped medial cortical nodes abolished actomyosin contractile ring assembly, clumped medial cortical nodes during mitotic cell cycle abolished actomyosin contractile ring formation, clumped medial cortical nodes midori actomyosin contractile ring assembly abolished, clumped medial cortical nodes abolished cytokinetic ring assembly, clumped medial cortical nodes abolished mitotic contractile ring assembly, clumped medial cortical nodes abolished actomyosin contractile ring assembly, clumped medial cortical nodes, during vegetative growth 2013-12-17T14:12:17Z cytokinesis defects, contractile ring actin, absent, with clumped medial cortical nodes FYPO:0002998 A cytokinesis phenotype observed in the vegetative growth phase of the life cycle in which the assembly and distribution of actin filaments and associated proteins does not occur, resulting in the failure to form an actomyosin contractile ring, and in which medial cortical nodes form irregular clumps instead of coalescing into the medial cortex ring. Note that a ring structure may form without filamentous actin, but a ring lacking F-actin is not considered a contractile ring.