Rhizopus arrhizus

Rhizopus arrhizus
Scientific classification
Kingdom:	Fungi
Phylum:	Mucoromycota
Order:	Mucorales
Family:	Mucoraceae
Genus:	Rhizopus
Species:	R. arrhizus
Binomial name
	Rhizopus arrhizus; (Fisher)

Rhizopus arrhizus is a fungus of the family Mucoraceae, characterized by sporangiophores that arise from nodes at the point where the rhizoids are formed and by a hemispherical columella. It is the most common cause of mucormycosis in humans and occasionally infects other animals.

Rhizopus arrhizus spores contain ribosomes as a spore ultrastructure.[1]

Metabolism in the fungus changes from aerobic to fermentation at various points in its life cycle.[2]

Plant diseases

See:

Uses

Rhizopus arrhizus can be used for bio-remediation, i.e., is useful in treating uranium and thorium-affected soils.[3]

References

Buckley, Patricia M.; Sommer, N. F.; Matsumoto, T. T. (June 1968). "Ultrastructural Details in Germinating Sporangiospores of Rhizopus stolonifer and Rhizopus arrhizus" (PDF). Journal of Bacteriology. 95 (6): 2365–2373. doi:10.1128/JB.95.6.2365-2373.1968. PMC 315172. PMID 4876136. One detail of spore ultrastructure not previously emphasized in studies of these fungi is the appearance of ribosomes. After chrome-osmium postfixation, it was possible to observe dense, approximately round, cytoplasmic particles which lay apparently free throughout the cells
Lawler, George C.; Weber, Darrell L. (1980). "Metabolism During Asexual Sporulation in Rhizopus arrhizus (Fischer)" (PDF). Journal of General Microbiology. 117 (2): 465–474. doi:10.1099/00221287-117-2-465. The metabolism of Rhizopus arrhizus (Fischer) during growth and asexual sporulation was investigated. Aerobic respiration occurred during spore germination but changed to fermentation during the initial stages of growth. During the later stages of growth and sporulation, the respiration again became aerobic.
"Journal of Scientific & Industrial Research Vol.64, February 2005, pp 93-100 Fungus — An alternative for bioremediation of heavy metal c ontaining wastewater: A review" (PDF).

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[1] Buckley, Patricia M.; Sommer, N. F.; Matsumoto, T. T. (June 1968). "Ultrastructural Details in Germinating Sporangiospores of Rhizopus stolonifer and Rhizopus arrhizus" (PDF). Journal of Bacteriology. 95 (6): 2365–2373. doi:10.1128/JB.95.6.2365-2373.1968. PMC 315172. PMID 4876136. One detail of spore ultrastructure not previously emphasized in studies of these fungi is the appearance of ribosomes. After chrome-osmium postfixation, it was possible to observe dense, approximately round, cytoplasmic particles which lay apparently free throughout the cells

[2] Lawler, George C.; Weber, Darrell L. (1980). "Metabolism During Asexual Sporulation in Rhizopus arrhizus (Fischer)" (PDF). Journal of General Microbiology. 117 (2): 465–474. doi:10.1099/00221287-117-2-465. The metabolism of Rhizopus arrhizus (Fischer) during growth and asexual sporulation was investigated. Aerobic respiration occurred during spore germination but changed to fermentation during the initial stages of growth. During the later stages of growth and sporulation, the respiration again became aerobic.

[3] "Journal of Scientific & Industrial Research Vol.64, February 2005, pp 93-100 Fungus — An alternative for bioremediation of heavy metal c ontaining wastewater: A review" (PDF).