Introduction to Sporulation
Many (not all) fungi are capable of reproducing BOTH SEXUALLY and
ASEXUALLY - usually producing spores as a result.
- Purpose of sporulation:
- DISPERSAL - spores ensure that a small portion of the fungus' protoplasm
is widely and efficiently dispersed away from the site currently
occupied by the organism, e.g. zoospores, sporangiospores,
Why might this be important? ANSWER]
- PRESERVATION - certain types of spore preserve the potential for growth
at the same site because they provide a means by which the
fungus can survive unfavourable environmental conditions, e.g.
oospores, zygospores, chlamydospores.
- GENETIC VARIATION - sexual sporulation provides the potential for genetic
- Factors influencing the type of sporulation:
- GENOTYPE of the SPECIES - each species possesses its own genetic 'programme'.
- GENOTYPE of the MYCELIUM - one strain may behave differently to another.
- EXTENT OF SOMATIC GROWTH - a certain amount of growth is often necessary
before sporulation can occur.
- SPECIFIC ENVIRONMENTAL CONDITIONS - e.g. temperature, light, specific