Employing Bacillus cereus strain 2, we examined the fate of two chromosomes contained in vegetative cells in the course of sporulation. Cytological observations and quantitative estimation of deoxyribonucleic acid (DNA) confirmed the earlier observations that, during the course of sporulation, one of two chromosomes of the vegetative cell was incorporated into the sporangium and the other disap...

RHINosPoRIDIosIs is a local inflammatory condition, taking the form of a polypoid growth composed of granulation tissue. This is due to a fungus known as Rhinosporidium seeberi (first described by Seeber), which commences its life cycle as a parasite measuring 8,u but grows by nuclear division until it reaches a size of about 200 to 300 ,u and contains over 4,000 nuclei, which form 16,000 spore...

Many fungi have been identified as pathogens of marine algae. Among them, Chytridiomycota revealed relatively highly abundant, but much the diversity known within these groups is almost entirely based on environmental sequencing data. Here, we present a novel chytridiomycete genus and species, characterized by light microscopical observations, ultrastructure, molecular phylogenetic analysis par...

Because of tile small size of the endoparasite, Bacillus #enetrans (Thorne, 1940) Mankau, 1975 (2), it has been difficult to stttdy, and disagreement about the method of its penetrat ing nematode cuticle has appeared in the literature (3). Concepts previously presented (3) are herein substantiated by en [ace scanning electron micrographs (SEM) of several infected specimens of Dolichodorus from ...

Spores of the bacterium Bacillus subtilis are encased in a two-layered protein shell, which consists of an electron-translucent, lamellar inner coat, and an electron-dense outer coat. The coat protein CotE is both a structural component of the coat and a morphogenetic protein that is required for the assembly of the outer coat. We now show that CotE is located in the outer coat of the mature sp...