The comparative morphology of the fungal mat and ball of Trichophyton rubrum

Zussman, R. A.; Vicher, E. E.; Lyon, I.

doi:10.1007/bf02057326

Cited by 9 publications

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thorn and Raper (6) detected garlic odors produced by five species of Aspergillus, one of Penicillium and one species of Fusarium in the presence of 1500 iig/ml AS2O3, however, the gas was not identified. Zussman et al (7) observed volatilization of arsenate but not arsenite by Trichophyton rubrum.…”

mentioning

confidence: 98%

Microbiological Methylation of Arsenic

Cox¹

1975

ACS Symposium Series

View full text Add to dashboard Cite

The biological methylation of arsenic was first recognized during several poisoning episodes in the early nineteenth century (1).Several individuals succumbed in their sleep to arsenic poisoning, the cause of which was not immediately recognized. Initially it was attributed to the presence of particles of arsenic in the room air originating from wallpaper pigments.Others thought biological activity might have reduced these arsenic pigments to arsine which was the toxic agent.An experimental approach ultimately determined the cause of gas formation when an Italian scientist, Gosio, isolated and characterized some volatile arsenic-producing fungi.He exposed potato pulp containing arsenic trioxide to the air and soon detected growth of molds accompanied by a garlic-type odor. From these cultures he isolated a mold Penicillium brevicaule (Scopulariopsis brevicaulis) which produced copious quantities of gas with a garlic-like odor. Gosio trapped samples of the gas from this culture and converted it to arsenic proving that the metal had truly been volatilized by the fungus (2). An associate, Bignelli, performed an elemental analysis on the gaseous material and incorrectly deduced the structure of diethylarsine (3).It wasn't for another thirty years that the structure of "Gosio gas" was determined by Challenger's group in England. A great deal of research on biological methylation of metals was performed by Challenger and associates over twenty odd years beginning with the methylation of arsenic compounds (1,4).These researchers cultured several strains of S. brevicaulis on bread crumbs containing arsenic trioxide and the gas produced was precipitated in aqueous solutions as either the mercuric chloride,

show abstract

mentioning

confidence: 98%