How do you identify Rhizopus stolonifer?

August 12, 2019 Off By idswater

How do you identify Rhizopus stolonifer?

To identify Rhizopus stolonifer look for either a grayish fluffy mass or a blue or yellow colored coating on the substrate. Black spores are also visible to the eye on the surface of the substrate, which may look like black specs.

What is the shape of Rhizopus stolonifer?

Rhizopus stolonifer (Soft Rot) stolonifer group are: complex and well-developed rhizoids, sporangiophores, sporangium and sporangia. The shape of the main columnella (mycelium) is conical-cylindrical; it is gray or brownish, up to 140 μm in height and branches until a tangled mycelium is formed (Fig. 1.1A).

What conditions does Rhizopus stolonifer like?

Rhizopus stolonifer prefers warm and dry habitats, such as soils, fresh decaying litter, wild bird nests, and even children’s sandboxes. As a decomposer in the soil, the fungus plays a significant role in the carbon cycle.

What is the function of Rhizopus stolonifer?

The good: Rhizopus stolonifer has some importance to the environment. This specific type of mold plays a key role in the carbon cycle because it works as a decomposer in the soil, dung, and many food types. It is able to recycle materials, like sugar and starch, in order to make use of what has previously been used.

What are the main characteristics of Rhizopus?

Rhizopus fungi are characterized by a body of branching mycelia composed of three types of hyphae: stolons, rhizoids, and usually unbranching sporangiophores. The black sporangia at the tips of the sporangiophores are rounded and produce numerous nonmotile multinucleate spores for asexual reproduction.

What is the common name for rhizopus Stolonifer?

black bread mold
Rhizopus stolonifer is commonly known as black bread mold. It is a member of Zygomycota and considered the most important species in the genus Rhizopus. It is one of the most common fungi in the world and has a global distribution although it is most commonly found in tropical and subtropical regions.

What disease does Rhizopus nigricans cause?

Rhizopus rot, caused by Rhizopus nigricans, can be very destructive to harvested fruit. Tiny, black, spherical structures are produced on stalks above the white mold. Each of these contains thousands of spores that are released to float in the air.

How does rhizopus Stolonifer affect humans?

Rhizopus stolonifer is an opportunistic agent of disease and hence will only cause infection in people with a weakened immunity. Zygomycosis is the main disease that might be caused by this fungus in humans and while it is not entirely understood yet, this disease is very dangerous and can be fatal.

What are the examples of Rhizopus?

Some common example of rhizopus species are:

  • Rhizopus Arrhizus: They help in production of alcoholic beverages.
  • Rhizopus Zygospores: they are used to make tempeh.
  • Rhizopus Microsporus: It is used to ferment soybean products.
  • Rhizopus Stolonifer: It is also known as black bread mould.

What color is Rhizopus?

From the front, the color of the colony is white initially and turns grey to yellowish brown in time. The reverse is white to pale. Pathogenic species of Rhizopus can grow well at 37°C [531, 1295, 2144, 2202].

Which is the best description of Rhizopus stolonifer?

Rhizopus stolonifer is a cosmopolitan phytopathogenic fungus belonging to the Mucoraceae family, capable of growing and developing in a wide variety of environments. It is a fast growing species, which favors the colonization and decomposition of stored food or agricultural products.

What are the physical characteristics of a Rhizopus?

All members of the Rhizopus genus are filamentous fungi. Colonies, which are usually deep grey to black in color, grow rapidly at the right temperatures. Rhizopus species have haploid mycelium composed of haploid, multinuclear, coenocytic hyphae. Their morphology is characterized by the presence of stolons, rhizoids, and sporangiophores.

What’s the difference between a Mucor and a Rhizopus?

Mucor has no stolons or apophyses, while Rhizopus has stolons that connect sporangiophores with the rhizoid and contain apophyses in sporangia. There is also a difference between the temperature at which the pathogenic species of these two genera grow. Rhizopus species can grow at 40°C while Mucor species cannot.

What makes a Rhizopus different from other molds?

Rhizopus differs from the molds previously described, because it is nonseptate and produces sporangiospores rather than conidia. It is a very-fast-growing, spreading type of mold which has white mycelia and black sporangia. Rhizopus species form rhizoids at the base of the sporangiophores, and columella in the sporangium (Figure 6).