УЛЬТРАТОНКОЕ СТРОЕНИЕ ВОЗБУДИТЕЛЯ НЕКРОБАКТЕРИОЗА FUSOBACTERIUM NECROPHORUM

Abstract

Necrobacteriosis is widely spread transmittable disease affecting cattle herds. The disease causative agent Fusobacterium necrophorum is gram-negative nonspore-forming anaerobic bacteria belonging to Bacteroidaceae family. For electron-microscope study 2 Fusobacterium necrophorum strains - «8 TS630501» and «12TSK630501» were selected for study involving negative contrast and ultrathin cultures section. The cells were observed to have rod-like shape with various length and the cell walls have smooth surface without any flagella and other cell damages. The cell walls have the construction peculiar to all gram-negative bacteria. Some cellular regions had gaps - cell wall deficiencies. The investigations provide morphological process of fusobacteria cell paraplasma spaces during growth process. Cytoplasma around nucleoide has medium electronic density with few ribosomes, polysomes and complete absence of inclusions.