In Oomycetes, oospores can also result from asexual reproduction, by apomixis. These are found in fungi as sexual spores which help the sexual reproduction of fungi. These haploid, non-motile spores are the site of meiosis and karyogamy in oomycetes.

Which fungus produces oospore?

Oospores and zygospores are the result of sexual reproduction in the Oomycota and Zygomycota, respectively. An oospore forms when an oogonium (female gamete) is fertilized by an antheridial (male gamete) nucleus; a characteristically thick wall and food reserves help to ensure survival.

How are Oospores formed?

Oospores and zygospores are the result of sexual reproduction in the Oomycota and Zygomycota, respectively. An oospore forms when an oogonium (female gamete) is fertilized by an antheridial (male gamete) nucleus; a characteristically thick wall and food reserves help to ensure survival.