Austropuccinia

Austropuccinia
On Eugenia reinwardtiana
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Pucciniomycetes
Order: Pucciniales
Family: Sphaerophragmiaceae
Genus: Austropuccinia
(G.Winter) Beenken
Species:
A. psidii
Binomial name
Austropuccinia psidii
(G. Winter) Beenken (2017)[1]
Synonyms[2]

Species synonymy:

  • Puccinia psidii G. Winter (1884)
  • Uredo rangelii J.A. Simpson, K. Thomas & Grgur. (2006)

Austropuccinia is a monotypic genus of rust (a type of plant pathogen) native to South America with the only species Austropuccinia psidii, commonly known as myrtle rust, guava rust, or ʻōhiʻa rust. It affects plants in the family Myrtaceae. It is a member of the fungal complex called the guava rust (Puccinia psidii) group.[3] The spores have a distinctive yellow to orange colour, occasionally encircled by a purple ring. They are found on lesions on new growth including shoots, leaves, buds and fruits. Leaves become twisted and may die. Infections in highly susceptible species may result in the death of the host plant.[4]

As of late 2013, it is infecting around 179 species in New South Wales and Queensland, from 41 genera (around 46% of genera in the Myrtaceae) in Australia.[5]

  1. ^ Cite error: The named reference Beenken 2017 was invoked but never defined (see the help page).
  2. ^ "Austropuccinia psidii (G. Winter) Beenken 2017". biotanz.landcareresearch.co.nz. Manaaki Whenua – Landcare Research 2023. 11 April 2017. Retrieved 13 December 2023.
  3. ^ Cite error: The named reference Carnegie 2010 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference myrtle rust DPI was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Nursery plan was invoked but never defined (see the help page).