Explain some features of aspergillus, Biology

Assignment Help:

Explain some Features of Aspergillus?

The identifying features include:

1. Macroscopically Aspergillus colonies are powdery and are of different colours like green, blue, black, yellow, brown etc.

2. Microscopically mycelium consists of branched, bright or pale coloured hyphae some of which grow within the substrate while others grow on the substrate.

3. From these vegetative hyphae, long, unbranched, nonseptate erect hyphae arise called conidiophores. The cell from which conidiophore arise is called foot cell. It is thick walled and T-shaped and one conidiophore arises from each foot cell.

4. Conidiophores terminate into a globular structure called vesicle

5. Around the vesicle, there are 1-2 layers of flask shaped structures called phialides or sterigmata.

6. At the tip of the sterigmata, a chain of small unicellular spores called conidia arises. These conidia are formed in basipetal manner (oldest is at the top). These are arranged compactly side by side. The whole structure consisting of the foot cell, the upright hypha, the vesicle, the metullae and the phialides constitutes the conidiophore.

7. Sexual Reproduction occurs by formation of ascus and ascospores.


Related Discussions:- Explain some features of aspergillus

Nature: matter and energy, Nature: Matter and Energy Nature is not just...

Nature: Matter and Energy Nature is not just our immediate surrounding or environment, but is the whole Universe of Cosmos. Study of the origin   and topography of cosmos is ca

Explain food borne toxic infections, Q. Explain Food borne toxic infections...

Q. Explain Food borne toxic infections? Ans. The food borne toxic infections, you may recall reading earlier, are caused by the ingestion of a large numbers of ent

Explain the characteristics of agar- agar, Explain the Characteristics of A...

Explain the Characteristics of Agar- Agar? There are many characteristics, which make agar-agar, an ideal solidifying agent. These are: (a) It has high gel strength, so it c

Determine about the accommodation of eye, Determine about the Accommodation...

Determine about the Accommodation of eye Accommodation is the ability of the overall refracting power of the eye to change to clearly view objects at different distances. This

Coordination, how does impuses reaches the brain

how does impuses reaches the brain

Concomitant caroid endarterectomy and cabg, Concomitant caroid endarterecto...

Concomitant caroid endarterectomy and CABG :   Symptoimatic or asymptomatic carotid artery disease may be present in patients undergoing CABG. It is very important to recognize thi

Explain prophylaxis with antimicrobial, Explain Prophylaxis with antimicrob...

Explain Prophylaxis with antimicrobial Prophylaxis with antimicrobials has decreased the incidence of surgical site infection after head and neck operations that involve an inc

Pathogenesis of acute rheumatic fever, You have learnt about the epidemiolo...

You have learnt about the epidemiology, etiology and pathogenesis of acute rheumatic fever. Revised Jones criteria, which have major and minor criteria, are helping to diagnosis of

What is termination , In the eukaryotes, eukaryotic release factor eRF...

In the eukaryotes, eukaryotic release factor eRF-1 recognizes all three termination codons that are UGA UAA, and UAG and, with the help of protein eRF-3, terminates translation.

Define nitrogen estimation - kjeldahl''s method, Define Nitrogen Estimation...

Define Nitrogen Estimation - Kjeldahl's Method? Nitrogen in the protein is estimated by a method referred to as Kjeldahl's method. Although over a period of time many other met

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd