||Infection of the European Chafer, 'Amphimallon majalis' by 'Bacillus popilliae': Ultrastructure.
Kawanishi, C. Y. ;
Splittstoesser, C. M. ;
Tashiro., H. ;
||Health Effects Research Lab., Research Triangle Park, N.C. Environmental Toxicology Div. ;New York State Agricultural Experiment Station, Geneva.
Electron microscopy ;
European chafer ;
Amphimallon majalis ;
Bacillus popilliae ;
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Electron microscopical studies indicate that midgut alterations observed in larval Amphimallon majalis during Bacillus popilliae invasion were due to infection of epithelium, wound repair, and hemocytic encapsulation. Hemocytes bearing angular cytoplasmic granules formed the capsule which adhered to the basal lamina subjacent to the mesenteronic lesion. Exocytosis of hemocyte granules into bacilli-containing endocytic invaginations of plasma membranes and vacuoles was observed. These hemocytes as well as mesenteronic cells exhibited bactericidal capabilities.