MODE OF REPRODUCTION IN FUNGI (Part 1) Vegetation Reproduction

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Mode of Reproduction

 The production of young ones is called reproduction. There are three modes of reproduction in fungi. They are:

1. Vegetative reproduction

2. Asexual reproduction

3. Sexual reproduction.


1. Vegetative Reproduction

In fungi, vegetative reproduction takes place by fragmentation, fission and budding.

1. Fragmentation

The plant body of fungi breaks up into many bits called fragments. This process is known as fragmentation. Each fragment grows into a new individual. Fragmentation may occur acci-dentally or spontaneously.

2. Fission

The simple splitting of a somatic cell into two daughter cells is known as fission or cell division. Eg. Yeasts.

During fission the mother cell elongates. The nucleus of the mother divides into two daughter nuclei. This is followed by the division of the cytoplasm which is known as cytokinesis. A constriction appears in the middle and a cross wall is formed. Two daughter cells are formed. After separation these daughter yeasts are known as fission yeasts.


3. Budding

The formation of a daughter individual from the outgrowth of the parent body is called budding Each bud produces a new individual. Most of the yeasts and many other fungi repro. duce by budding. In the yeasts budding takes place as follows:

A small portion of the cell wall near the pole becomes thin. The protoplast in this region bulges out in the form of an outgrowth or bud. This outgrowth gradually in creases in size. The nucleus of the parent yeast cell drvides into 2 daughter nuclei. One of the nuclei migrates into the enlarging bud. The bud becomes constricted at the base. It gets separated off and forms a new individual.



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