Tranzschelia discolor (Fuckel) Tranzschel & Litvinov, 1939

on Anemone

gall

spermogonia amphigenous, small black or brown specks. Aecia in early spring, golden yellow, cupulate, dispersed over the entire underside of the leaf, also on the petioles and stem. The plants are disfigured.

spermogonia, aecia

Ranunculaceae, narrowly monophagous

Anemone blanda, coronaria, hortensis.


on Prunus

Tranzschelia discolor: telia on Prunus domestica

Prunus domestica, Dronten © Arnold Grosscurt: upperside of a leaf with telia

Tranzschelia discolor: telia on Prunus domestica

underside

Tranzschelia discolor: telia on Prunus domestica

detail

Tranzschelia discolor: teliospores

teliospores

Tranzschelia discolor: teliospore

a single teliospore

Tranzschelia discolor: telia on Prunus insititia

Prunus insititia, England, Vice County: Berks, VC22: telia © Malcolm Storey, BioImages

Tranzschelia discolor: teliospores

Prunus domestica, England, Vice County: Berks, VC22: teliospores; © Malcolm Storey, BioImages

Tranzschelia discolor on Prunus spinosa

Prunus spinosa, Belgium, prov. Limburg, Kwaadmechelen © Carina Van Steenwinkel

Tranzschelia discolor: urediniospores and paraphyses

urediniospores and paraphyses

Tranzschelia discolor: paraphyses in uredinium

sometimes the cell wall of the paraphyes is thickened apically

Tranzschelia discolor: teliospores

teliospores

gall

uredinia and telia hypophyllous, brown and black, respectively. Uredinia densely and regularly dispersed, with capitate paraphyses. Telia long covered by the epidermis. Teliospores in bundles, two-celled, but easily falling apart. The lower cell is conspicuously less verrucose and lighter in tone than the top one, and more oval or pear shaped. The germination pore of the top cel is positioned near the separation wall, in this cell the wall apically is somewhat thickened.

uredinia, telia

Rosaceae, monophagous

Prunus armeniaca, avium, cerasifera, domestica & subsp. insititia, dulcis, mahaleb, persica, serotina, spinosa.

synonyms

Tranzschelia pruni-spinosae var. discolor (Fuckel) Dunegan, 1938.

notes

the fungus hibernates in the Anemone rhizomes. Especially on peach the fungus is an important pest in regions with a mediterranean climates.

references

Adaskaveg, Soto-Estrada, Förster, Thompson, Hasey, Manji & Teviotdale (2000a), Alaei, Mohammadi & Dehghani (2012a), Beenken & Senn-Irlet (2016a), Brandenburger (1985a), Buhr (1964b), Dauhpin & Aniotsbehere (1997a), Ellis & Ellis (1997a), Gäumann (1959a), Gjaerum (1982a, 1987a), Hafellner (1980a), Helfer (2005a), Henderson (2000a), Jage, Klenke, Kruse ao (2016a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Kruse (2014a), Maier, Begerow, Weiß & Oberwinkler (2003a), Poelt & Zwetko (1997a), Preece & Hick (1994a), Redfern & Shirley (2011a), Sadravi, Ono, Pei & Rahnama (2007a), Savchenko, Heluta, Wasser & Nevo (2014c), Scholler (1992a), Soylu, Soylu & Kurt (2004a), Spooner & Butterfill (1999a), Termorshuizen & Swertz (2011a), Vanderweyen & Fraiture (2007a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).

29/05/2017

pub 29.v.2017 · mod 12.viii.2017