Welcome all dear student on krishiratna blogs in this blog you will get detail information about reproduction in fungi in very simple language.
Asexual reproduction in fungi :-
a) By fragmentation of Hyphae.
b) Binary fission / Simple splitting
c) Budding
d) Production of asexual spore
By fragmentation of Hyphae:-
- Mycelliun and each fragments grow into a new individual.
- Hyphae breaks into a component cells as oidia which behaves as spore
Binary fission/ Simple splitting
- By forming a cell wall each spore germinates and forms a germ tube which grow the
mycelium eg. Yeast
Budding
It is production of small out growth ( Bud) from parent cells.
Production of asexual spore
Fungi produce spore asexually veg. conidia , sporangiospores
Sexual reproduction in fungi :-
i) Planogametic copulation
ii) Gametangial copulation
iii) Gametangial contact
iv) Spermatization
v) Somatogamy
vi) Dicaryotization
vii) Heterokaryosis
viii) Nuclear dissociation
Planogametic copulation
- In this method swarmspores like cells called gamets fused in pairs to form a motile zygotes
- Planogametic copulation is observed in aquatic forms
Gametangial copulation
The male nuclei and cytoplasm from the antheridium are migrated to the female cell through the special passage called fertilization tube which give out from anthridium followed by fusion of two nuclei and form the egg cell called Oospore which ultimately developes into oospore.
Gametangial contact
It is characterized by the fusion of the entire contact of two connecting gametangia
Spermatization
Some fungi bears minute uninucleate spore like male structure called spermatia which carried by wind, insect, etc to female gametangia.
Somatogamy:-
Somatic cell taking over sexual function eg. Smut fungi
Dikaryotization:-
Karyogamy delayed and simply binucleate cell condition is formed and such a pair of nuclei is called dikaryon and the process is called dikaryotization.
Heterokaryopsis
The phenomenon of existance of different kinds of nuclei in same individual is called as heterokaryopsis
Nuclear dissociation
This is brought about by segregation of nuclei from originally multinucleate condition giving to new mutant or clones.
Also read following notes
1) Disease Triangle
https://krishiratna.blogspot.com/2021/02/plant-pathology-disease-triangle.html
2) Plant pathology; Branches , objectives
https://krishiratna.blogspot.com/2021/02/plant-pathology-branches-objectives-of.html
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