niitjates kottseentes esinevad rakuvaheseinte läheduses paiknevad modifitseerunud peroksüsoomid, mis hüüfide vigastamisel sulgevad poorid ja takistavad rakusisaldise väljumist, Peroxisome-derived microbody found near the septae that divide hyphal compartments in filamentous Ascomycota. Their function is plugging of the septal pores after hyphal wounding, which restricts the loss of cytoplasm to the sites of injury.