Phyllactinia guttata

Phyllactinia guttata
Various stages in the life cycle of Phyllactinia guttata. Fig 1. Natural size, on chestnut leaf. 2. Perithecium enlarged. 3. Two asci. 4.Three sporidia. 5.Conidia-bearing hyphae. 6.Conidium germinating.
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Leotiomycetes
Order: Erysiphales
Family: Erysiphaceae
Genus: Phyllactinia
Species:
P. guttata
Binomial name
Phyllactinia guttata
(Wallr.) Lév.[1]
Synonyms[2]
List
    • Alphitomorpha guttata Wallr., Verh. Ges. nat. Freunde Berlin 1(1): 42 (1819)
    • Erysibe coryli (DC.) Mussat, in Saccardo, Syll. fung. (Abellini) 15: 137 (1901)
    • Erysibe guttata var. coryli (DC.) Link, Fl. lusit.: 484 (1833)
    • Erysibe suffulta (Rebent.) Mussat, in Saccardo, Syll. fung. (Abellini) 15: 138 (1901)
    • Erysiphe betulae DC., Fl. franç., Edn 3 (Paris) 5/6: 107 (1815)
    • Erysiphe coryli DC., in Lamarck & de Candolle, Fl. franç., Edn 3 (Paris) 2: 272 (1805)
    • Erysiphe guttata (Wallr.) Link, in Willdenow, Sp. pl., Edn 4 6(1): 116 (1824)
    • Erysiphe guttata f. corylea (DC.) Fr., Syst. mycol. (Lundae) 3(1): 246 (1829)
    • Erysiphe guttata var. coryli Link, in Willdenow, Sp. pl., Edn 4 6(1): 116 (1824)
    • Erysiphe suffultum (Rebent.) Nees, Syst. Pilze (Würzburg): 148, tab. 14, fig. 134 (1816)
    • Erysiphe varium var. suffultum (Rebent.) Fr., Observ. mycol. (Havniae) 1: 206 (1815)
    • Microsphaera betulae (DC.) Magnus, Ber. dt. bot. Ges. 16: 67 (1898)
    • Phyllactinia betulae (DC.) Fuss, Archiv des Vereins für Siebenbürgische Landeskunde, Neue Folge 14(2): 463 (1878)
    • Phyllactinia berberidis Palla, Ber. dt. bot. Ges. 17: 64 (1899)
    • Phyllactinia corylea (Pers.) P. Karst., in Salmon, Monograph of Erysiphaceae (Berlin-Stuttgart): 224 (1900)
    • Phyllactinia suffulta (Rebent.) Sacc., Michelia 2(no. 6): 50 (1880)
    • Sclerotium erysiphe ß corylea Pers., Observ. mycol. (Lipsiae) 1: 13 (1796)
    • Sclerotium suffultum Rebent., Prodr. fl. neomarch. (Berolini): 360 (1804)

Phyllactinia guttata is a species of fungus in the family Erysiphaceae; the anamorph of this species is Ovulariopsis moricola. A plant pathogen distributed in temperate regions, P. guttata causes a powdery mildew on leaves and stems on a broad range of host plants; many records of infection are from Corylus species, like filbert (Corylus maxima) and hazel (Corylus avellana). Once thought to be conspecific with Phyllactinia chorisiae, a 1997 study proved that they are in fact separate species.[3]

Microscopically, P. guttata is characterized by large ascomata, long narrow pointed appendages with bulbous swellings at base, 2- or 3-spored asci with large ascospores; the ascomata also have gelatinous cells with tufts of hyphae somewhat resembling hairs.[4] The cleistothecia are capable of dissemination and attachment to new growing surfaces by means of gelatinous penicillate cells.

  1. ^ (Wallr.) Lév., Annls Sci. Nat., Bot., sér. 3 15: 144 (1851)
  2. ^ "Species Fungorum - GSD Species". www.speciesfungorum.org. Retrieved 20 October 2023.
  3. ^ Liberato JR. (1997). "Taxonomic notes on two powdery mildews: Phyllactinia chorisiae and Ovulariopsis wissadulae (Erysiphaceae : Phyllactinieae)". Mycotaxon. 101: 29–34.
  4. ^ Shin H-D, Lee H-J. (2002). "Morphology of penicillate cells in the genus Phyllactinia and its taxonomic application". Mycotaxon. 83: 301–325.