ABSTRACT
Fungi are the largest group of crop pathogens. Fungi belong to three kingdoms: Fungi, Chromista, and Protozoa. The Kingdom Chromista includes the phylum Oomycota, which contains many plant-pathogenic fungi. The Kingdom Protozoa consists of one phylum, Plasmodiophoromycota, which contains crop pathogens. The Kingdom Fungi consists of four phyla: Ascomycota, Basidiomycota, Zygomycota, and Chytridiomycota. Another group, Mitosporic fungi, includes fungi that have not been correlated with any meiotic states. This section describes the structure and reproduction of all these fungal phyla. It also provides a complete list of crop fungal pathogens and their systematic positions.
