Fungal Reproduction and Nutrition
Mycology
FUNGAL SPORES
TERMS 2. Blastospores
• Fragmentation – mycelium is torn apart by
external forces and these bits start new
individuals if conditions are favorable.
• Fission – a simple splitting of a cell into two
new daughter cells by constriction and the
formation of a cell wall, e.g., yeast.
• Budding – the production of small
outgrowths (bud) from a parent cell and as
the bus is formed, the nucleus of the parent
cell divides and one daughter nucleus 3. Chlamydospores
migrates into the bud. The bud increase in
size while still attached to the parent cell
and eventually breaks off and forms a new
individual. Yeast reproduces via budding
and so does some other fungi in different
conditions.
ASEXUAL SPORES
• More important type of reproduction
• Occurs several times throughout the
season 4. Sporangiospores
• Produced by fragmentation of aerial
hyphae
• Progeny is genetically identical to the
parent
MORPHOLOGY
• Color of hyaline: green, yellow, orange,
red, brown, black
• Shape: oval, oblong, needle-shaped,
helical 5. Arthrospores
• Number of cells: one to many
• Arrangement of the cells and where they
are situated
TYPES
1. Conidiospores
BS BIOLOGY (MICROBIOLOGY TRACK) | 1
, Fungal Reproduction and Nutrition
Mycology
CONIDIOSPORE
• Multiple chains or single spores formed at
the end of an aerial hypha
• Not enclosed within a sac
• Aspergillus spp. and Penicillium spp.
• Method of reproduction produces a
substantial resting spore very quickly
• Nutrients are shunted from adjacent cells
into a preferred cell and swells up, converts
CONIDIAL FUNGUS
nutrient materials to oil droplets for efficient
• Reproduces by means of asexual spores storage, then rounds off with a thick, often
called conidia roughened outer wall for protection
• Conidia vary greatly in shape, size and color SPORANGIOSPORES
• Most of the common household molds & • Hundreds of spores are formed within a sac
mildews are conidial fungi (sporangium) at the end of an aerial hypha
BLASTOSPORES • Rhizopus spp.
• A bud coming off the parent cell
• Candida albicans
SPORULATION
• Spores which develop within a sporangium
at the hyphal tip
CHLAMYDOSPORES
• Formed within hypha
• Thick-walled spore SEXUAL REPRODUCTION
• Candida albicans • Union of two nuclei.
• The entire thallus can be converted into one
or more reproductive structures
• Holocarpic – somatic and reproductive
phases do not occur together in the same
individual
• Eucarpic – in majority of fungi, only a
portion of the thallus give rise to
reproductive organs
BS BIOLOGY (MICROBIOLOGY TRACK) | 2
Mycology
FUNGAL SPORES
TERMS 2. Blastospores
• Fragmentation – mycelium is torn apart by
external forces and these bits start new
individuals if conditions are favorable.
• Fission – a simple splitting of a cell into two
new daughter cells by constriction and the
formation of a cell wall, e.g., yeast.
• Budding – the production of small
outgrowths (bud) from a parent cell and as
the bus is formed, the nucleus of the parent
cell divides and one daughter nucleus 3. Chlamydospores
migrates into the bud. The bud increase in
size while still attached to the parent cell
and eventually breaks off and forms a new
individual. Yeast reproduces via budding
and so does some other fungi in different
conditions.
ASEXUAL SPORES
• More important type of reproduction
• Occurs several times throughout the
season 4. Sporangiospores
• Produced by fragmentation of aerial
hyphae
• Progeny is genetically identical to the
parent
MORPHOLOGY
• Color of hyaline: green, yellow, orange,
red, brown, black
• Shape: oval, oblong, needle-shaped,
helical 5. Arthrospores
• Number of cells: one to many
• Arrangement of the cells and where they
are situated
TYPES
1. Conidiospores
BS BIOLOGY (MICROBIOLOGY TRACK) | 1
, Fungal Reproduction and Nutrition
Mycology
CONIDIOSPORE
• Multiple chains or single spores formed at
the end of an aerial hypha
• Not enclosed within a sac
• Aspergillus spp. and Penicillium spp.
• Method of reproduction produces a
substantial resting spore very quickly
• Nutrients are shunted from adjacent cells
into a preferred cell and swells up, converts
CONIDIAL FUNGUS
nutrient materials to oil droplets for efficient
• Reproduces by means of asexual spores storage, then rounds off with a thick, often
called conidia roughened outer wall for protection
• Conidia vary greatly in shape, size and color SPORANGIOSPORES
• Most of the common household molds & • Hundreds of spores are formed within a sac
mildews are conidial fungi (sporangium) at the end of an aerial hypha
BLASTOSPORES • Rhizopus spp.
• A bud coming off the parent cell
• Candida albicans
SPORULATION
• Spores which develop within a sporangium
at the hyphal tip
CHLAMYDOSPORES
• Formed within hypha
• Thick-walled spore SEXUAL REPRODUCTION
• Candida albicans • Union of two nuclei.
• The entire thallus can be converted into one
or more reproductive structures
• Holocarpic – somatic and reproductive
phases do not occur together in the same
individual
• Eucarpic – in majority of fungi, only a
portion of the thallus give rise to
reproductive organs
BS BIOLOGY (MICROBIOLOGY TRACK) | 2
