plant diseases caused by pathogenic fungi of
the order Pucciniales
are an estimated 168 rust genera and approximately
7000 species, more than half of which belong to the genus Puccinia.
Rust fungi are highly specialized parasites with
several unique features.
other plant pathogens, rust usually
affects healthy and vigorously growing plants, so the infection is
plant parts such as leaves, petioles, tender shoots, stem, fruits, etc. Infection
cause deformities such as growth retardation, witch's broom,
or formation of galls.
with severe rust infection may appear
stunted, chlorotic (yellowed), or otherwise discoloured
is most commonly seen as coloured powder,
composed of tiny aeciospores which land on vegetation producing
uredia, that form on the lower surfaces.
When picking any fungus for consumption,
caution should be exercised at all times.