ULTRASTRUCTURE OF EXOSPORIUM AND UNDERLYING INCLUSIONS IN SPORES OF BACILLUS-MEGATERIUM STRAINS
ULTRASTRUCTURE OF EXOSPORIUM AND UNDERLYING INCLUSIONS IN SPORES OF BACILLUS-MEGATERIUM STRAINS
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DOI：
10.1128/jb.109.3.1198-1209.1972
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发表时间：
1972-01-01
影响因子：
3.2
通讯作者：
GERHARDT, P
中科院分区：
文献类型：
--
作者：
BEAMAN, TC;PANKRATZ, HS;GERHARDT, P
Spores of selected strains ofBacillus megateriumwere prepared by various methods and examined with the electron microscope. An exosporium like that ofB. cereus, with a nap and basal layer, was found in spores of aB. megateriumstrain that reportedly contains a capsule-like exosporium. The exosporium occasionally appeared to be doubled or have an apical opening. Pili-like filaments were discerned on the surface. Beneath the exosporium were found large deposits of planar inclusions, which in cross section appeared laminated and in surface views consisted of a patchwork of striated packets with a periodicity of ∼5 nm. The inclusions were usually attached to the exosporium, but in ultrastructure they differed from both the exosporium and coat. In two other strains ofB. megaterium, one or two coats occurred but a typical exosporium was not present.
