Agaricus

Structure and Reproduciton

1. Dr. V. RAMESH
Assistant Professor & Head
Department of Botany
Vivekananda College
Tiruvedakam West –625 234
[email protected]
AGARICUS STRUCTURE &
REPRODUCTION

2. AGARICUS
It is a saprophyticfungus, belongs to the class Basidiomyctes.
It is found in deadand decayingorganicmatter during rainyseasons.
It is commonly called as Club fungi and White Button Mushrooms.
It has more than 25 species like
Agaricus campestries
A. cosmosus
A. regalis
A. bisporus
Systematic Position
Kingdom:Fungi
Class:Basidiomycetes
Order:Agaricales
Family:Agaricaceae
Genus: Agaricus
Species: bisporus

3. STRUCTURE
The vegetative body of Agaricusis mycelium produced by Basidiospore.
It consists of septatehyphae, cells are uninucleate.
This uninucleate mycelium is commonly called as primary mycelium.
The primary mycelium is branched, septateand grow below the soil.
The two different (+strain & -strain)hyphae of primary mycelium
fuse to form secondary mycelium.
Sec. mycelium is binucleate, brancehd, septateand short celled.
The hyphae of the sec. mycelium are interwoven compactely to form
rope like structure called as rhizomorph.
This rhizomorph produced the basidiocarp or fruit body above the
soil. It is edible.

4. Fruiting body consists of a stalkcalled as stipeand large circular
umbrellalike structure called as Pileus.
The stipe is cylindricaland pinkishwhite in colure.
Stipe has a ring like structure called as annulus.
STRUCTUE OF AGARICUS

5. V.S OF GILLS OF BASIDIOCRP

6. It shows three regions such as
1. Trama, 2. Sub-Hymenium & 3. Hymenium
Trama is the central part of the gill lies between two hymenail layers.
Sub hymenium is a compactmass of hyphae made up of
pseudoparenchymatoustissues. It is found either sides of the trama.
It is also called as hypothecium.
Hymeniumis a fertile portion of the fruiting body. It is lies in either
side of the subhymenium.
The hymenium has short and club shaped structure called as basidia
in tips.
The basidium produce thin walled spore called basidospore.

7. Reproduction in Agaricus
1.Vegetative Reproduction, 2.Asexual Reproduction
& 3.Sexual Reproduction
1.Vegetative Reproduction
It reproduces vegetativelyby its perennatingmycelium
2.Asexual Reproduction
Chlamydosporesareproducedwhicharelateralorintercalaryin
position.Ongermination,itgivesrisetohyphae.

8. 3.Sexual Reproduction

9. LIFE CYCEL OF AGARICUS

11. THANK YOU