Podosphaera minor
| Podosphaera minor | |
|---|---|
| Podosphaera minor on Spiraea in Canada. | |
| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Leotiomycetes |
| Order: | Helotiales |
| Family: | Erysiphaceae |
| Genus: | Podosphaera |
| Species: | P. minor
|
| Binomial name | |
| Podosphaera minor Howe, 1874
| |
| Synonyms | |
| |
Podosphaera minor is a species of powdery mildew in the family Erysiphaceae. It is found in the Americas and Eurasia, where it affects plants in the genus Spiraea.[1][2]
Description
The fungus forms greyish, thin mycelium on host leaves. Podosphaera minor, like most Erysiphaceae, is highly host-specific and infects only Spiraea.[1] Other species also infect the same genus, including Podosphaera spiraeae which is common on cultivated Spiraea in the same regions as P. minor, but rather causes dense, whitish, shoot-distorting growth. Podosphaera spiraeae-douglasii can be found on Spiraea douglasii. Podosphaera spiraeicola is found in East Asia.
Taxonomy
The fungus was formally described in 1874 by Howe. The species comprises two varieties: var. minor and var. longissima. The former has shorter chasmothecial appendages than the latter, which is found in North America.[1]
References
- ^ a b c Braun, Uwe; Cook, Roger T. A. (2012). Taxonomic manual of the Erysiphales (powdery mildews). CBS biodiversity series. Utrecht: CBS-KNAW fungal biodiversity centre. ISBN 978-90-70351-89-2.
- ^ Khodaparast, Seyed Akbar; Darsaraei, Hamideh; Pourmoghaddam, Mohammad Javad (2023). "Morphological and molecular characterization of Podosphaera minor on Spiraea in Iran". Mycologia Iranica. 10 (1). doi:10.22092/MI.2023.361225.1249.