Paucimyces. Radwa A. Hanafy, Noha H. Youssef, and Mostafa Elshahed, gen. nov.
MycoBank number: MB 838953; Index Fungorum number: IF 838953; Facesoffungi number: FoF;
Typification: Paucimyces polynucleatus Radwa A. Hanafy, Noha H. Youssef, and Mostafa Elshahed
Etymology: Pauci = derived from the Latin word for few, reflecting its relatively limited distribution in nature; myces = the Greek name for fungus.
Obligate anaerobic fungus that produces polycentric thallus with highly branched nucleated rhizomycelium of indeterminate length. The fungus is characterized by formation of spherical vesicles at the hyphal tips. Multiple sporangia are developed either directly on the spherical vesicles or the end of sporangiophores. Mature sporangia are separated from the sporangiophores by basal walls. Old cultures produce sporangiophore initials with no sporangia. Zoospores are mainly monoflagellated . Bi-flagellated zoospores are occasionally encountered. Frequent sub- culturing results in cultures that lose the zoosporogenesis ability and produce sterile sporangia.
The clade is defined by the sequence MW694896 (for ITS1, 5.8S rDNA, ITS2, D1-D2 28SrDNA). The most genetically similar genera are Orpinomyces, which is characterized by its polyflagellated zoospores and polycentric thallus that produce sporangia that are either terminal or intercalary, and Joilinomyces, which is defined as producing monocentric thalli and monoflagellated zoospores.
Species
Paucimyces polynucleatus