But, given the right conditions, they will germinate to form a new haploid fungus. The body of Ascomycota is shared by other fungi and consists of a typical eukaryotic cell surrounded by a wall. In return, the beetles maintain a pure culture of the fungus and transport it to newly established galleries. Reproduction From a human perspective, the most unusual aspect of all fungi is that they have more than one reproductive option. Conidia contain mitotic nuclei, and their cell wall is simply a modified hyphal or yeast wall.
Yeasts grow by budding or fission and hyphae grow apically and branch laterally.
Most yeasts and filamentous Ascomycota are haploid, but some species, Saccharomyces cerevisiae for example, can also be diploid. Mitospores may simply reproduce the parent, or may also act as gametes to fertilize a compatible partner. In hyphal species, cytoplasmic fusion may not be immediately followed by nuclear fusion, leading to a short dikaryotic phase. Ascospores are released from the ascoma and germinate to form a new haploid mycelium. The Ascomycota is a sister group to the Basidiomycota.