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Sexual Fungal Reproduction: Plasmogamy, Karyogamy, and Meiosis

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Fungal sexual reproduction proceeds through three stages: plasmogamy fuses two haploid cells' cytoplasm, karyogamy fuses their nuclei, meiosis restores the haploid state.

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Between plasmogamy and karyogamy, many fungi pass through a dikaryotic stage, where two haploid nuclei coexist briefly in one cell.

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Plasmogamy and karyogamy are separate steps — cytoplasmic fusion does not mean the nuclei have fused as well.