has_part exists_during inheres_in output_of abnormal septum morphology during vegetative growth abnormal secondary cell septum biogenesis decreased secondary cell septum thickness reduced secondary cell septum thickness decreased secondary septum thickness A septation phenotype observed in the vegetative growth phase of the life cycle in which a cell forms a secondary septum that is thinner than normal. decreased secondary cell septum thickness during mitotic cell cycle 2015-05-27T15:47:50Z FYPO:0004651 thin secondary septum midori decreased secondary cell septum thickness during vegetative growth