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Uromyces setariae-italicae Yoshino

Description
Uredinia on both leaf surfaces, subepidermal, erumpent, round, less than 1000 µm, yellow, peridium present, paraphyses present.

Urediniospores globose, subglobose or obovoid, apex obtuse, yellowish brown, 25‒32 × 23‒29 µm; wall 2‒2.5 µm thick, apex unthickened, finely verruculose, with 3 equatorial germ pores.

Hosts
Host family: Poaceae
Host species: Brachiaria pubigera
Setaria glauca

Distribution
NSW, QLD, WA

Comments
Uromyces setariae-italicae is one of the most important diseases of foxtail millet (Setaria italica), which is widely grown as a grain crop for human consumption in much of Asia (Weng et al. 2009). Uromyces setariae-italicae on was first reported on Setaria glauca in New South Wales by Sydow (1937).

Highslide JS
Uromyces setariae-italicae on Brachiaria pubigera - BRIP 60928.
Highslide JS
Uromyces setariae-italicae on Brachiaria pubigera - BRIP 56931.
Highslide JS
Urediniospores of Uromyces setariae-italicae on Brachiaria pubigera - BRIP 58048.
Scale bar = 10 µm.