Table of Contents
How do Conidiospores reproduce?
conidium, a type of asexual reproductive spore of fungi (kingdom Fungi) usually produced at the tip or side of hyphae (filaments that make up the body of a typical fungus) or on special spore-producing structures called conidiophores. The spores detach when mature.
How are conidiophores formed?
In a subsequent budding-like process, two layers of uninucleate reproductive cells, the metulae and phialides, are formed on top of the vesicle. Chains of conidia arise from repeated asymmetric mitotic division of phialides. The final multicellular conidium- bearing structures are called conidiophores ( Fig.
What fungi produce conidiophores?
The conidiophore of Penicillium has a branched apex with one or more phialides produced at the tip of each branch. Like Aspergillus, the activity of multiple phialides allows a single conidiophore to support a mass of conidia. These fungi produce millions of dry spores per square centimetre of colony surface.
Is conidia and conidiophores the same?
Conidia are asexual spores and conidiophore is the special mycelium on which conidia are produced exogenously.
What is the function of conidiophores?
Conidiophores arise at right angles to the hyphae and are believed to be infectious for humans when mycelia are disturbed. When inhaled, the fungus converts to the yeast form, which is multinucleate, containing 8 to 12 nuclei.
What type of reproduction forms a Zygospore?
Zygospores are created by the nuclear fusion of haploid cells. In fungi, zygospores are formed in zygosporangia after the fusion of specialized budding structures, from mycelia of the same (in homothallic fungi) or different mating types (in heterothallic fungi), and may be chlamydospores.
Are conidiophores hyphae?
Dematiaceous fungi The conidiophores of Pithomyces species are short, peglike lateral branches from the vegetative hyphae.
What are Penicillium conidiophores?
Conidiophores are hyaline, smooth or rough-walled. Phialides are usually flask-shaped, consisting of a cylindrical basal part and a distinct neck, or lanceolate (with a narrow basal part tapering to a somewhat pointed apex).
What is the purpose of conidiophores?
How is zygospore produced?
Is Sporangiospore asexual spore?
Sporangiospores are asexual spores formed inside a walled sporangium. Sporangiospores include the spores of zygomycetes, which are exposed to air by splitting of the mature sporangial wall, and motile zoospores of chytrids expelled into water from their zoosporangia.
How do the Penicillium reproduce?
Penicillium reproduces asexually by forming conidia.
What is the difference between spore and zygospore?
The main difference between zoospore and zygospore is that zoospore is an asexual, naked spore produced within a sporangium, whereas zygospore is a sexual spore with a thick wall.
What does zygospore look like?
Zygospores generally have a large store of food reserves and a thick, resistant cell wall. Following an appropriate environmental stimulus, such as a change in light, temperature, or nutrients, the zygospores are induced to germinate and start another period of growth. …into a dormant stage (a zygospore).
What is oosphere and oospore?
*** Oospore : – it is (2n) , zygote in fungi ( eg : Rhizopus ) which is thick walled and resistant spore . ** Oosphere — it is (n) , female gamete in bryophytes which is non motile and prsesent inside the archegonium .