Peyronellaea curtisii

Peyronellaea curtisii (leaf scorch) is a fungal plant pathogen first described by Miles Joseph Berkeley and received its current name in 2010. [3] Formerly it was Stagonospora (syn. Stagonosporopsis) curtisii.[4] It is a cause of leaf blotch, and its substrates include Narcissus, Galanthus and Hippeastrum.[5]

Peyronellaea curtsii
Scientific classification
Kingdom:
Fungi
Phylum:
Ascomycota
Class:
Dothideomycetes
Subclass:
Pleosporomycetidae
Order:
Pleosporales
Family:
Didymellaceae
Genus:
Peyronellaea
Binomial name
Peyronellaea curtsii
(Berk.) Aveskamp, Gruyter & Verkley 2010
Synonyms
  • Stagonosporopsis curtisii (Berk.) Boerema[1]
  • Stagonospora curtisii (Berk.) Sacc.[2]

Symptoms

Peyronellaea curtisii causes red-brown spots on leaf tips of Narcissus[6] and other members of the family Amaryllidaceae; this gives them a scorched appearance that is easily mistaken for frost damage. A yellowish discolouration then spreads down the leaf; more spots may develop as the leaf withers, turns brown and die away. Minute black fungal fruiting bodies may be visible on the foliage. The flowers and flower stalks may also display brown spots and marks.[7]

On hippeastrum bulbs the fungus causes red spots that may develop into soft, sunken patches. Leaf scorch fungus can also affect other members of the Amaryllidaceae, including Amaryllis, Crinum, Nerine, Sprekelia and Sternbergia.[8]

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References
  1. Boerema (1981), In: Jaarboek. Plantenziektenkundige Dienst, 1980, no. 157:20
  2. Sylloge Fungorum 3: 451 (1884)
  3. Aveskamp, M.M.; de Gruyter, J.; Woudenberg, J.H.C.; Verkley, G.J.M.; Crous, P.W. (2010). "Highlights of the Didymellaceae: A polyphasic approach to characterise Phoma and related pleosporalean genera". Studies in Mycology. 65: 1–60. doi:10.3114/sim.2010.65.01. PMC 2836210. PMID 20502538.
  4. RHS:Narcissus leaf scorch
  5. Invasive.org
  6. "McCain, A.; Pyeatt, L.; Pierce, L. Leaf scorch of Narcissus. California Plant Pathology 1980 No. 50 pp. 1-2" (PDF). Archived from the original (PDF) on 2014-11-29. Retrieved 2014-11-21.
  7. RHS:Narcissus leaf scorch
  8. RHS:Narcissus leaf scorch

Bibliography


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