Puccinia thlaspeos Ficinus & Schubert, 1823

on Brassicaceae

Puccinia thlaspeos on Noccaea caerulescens

Noccaea caerulescens, Belgium, prov. Liège, Plombières, Haldes calaminaires de Plombières, 1.v.2019 © Carina Van Steenwinkel

Puccinia thlaspeos on Noccaea caerulescens

infected plant have a pale colour and do not come into flowering

Puccinia thlaspeos: telia  on Noccaea caerulescens

telia at the undersides of the leaves

Puccinia thlaspeos: telia  on Noccaea caerulescens

detail

Puccinia thlaspeos: teliospores

teliospores

Puccinia thlaspeos: germinating teliospores

the spores germinate almost immediately, forming a basidium

Puccinia thlaspeos: telia  on Noccaea caerulescens

at low magnification the early germination is recognisable by the greyish aspect of the telia

Puccinia thlaspeos: telia and teliospores

Thlaspi stenopterum, from Unamuno (1941a): infected plant, underside of a leaf with telia, teliospores (some unicellular, other germinating)

gall

No host plant alternation; only telia. The fungus is systemic; infected plants clearly appear diseased. The pulvinate telia, brown at first, greyish later, cover the entire underside of the leaves. Spores 12-21 x 35-55 µm, mostly two-celled, broad-elliptic, smooth, on a short, persistent pedicel, soon germinating.

host plants

Brassicaceae, oligophagous

Arabidopsis halleri, petraea, thaliana; Arabis alpina, arenicola, ciliata, collina, faub, hirsuta, nordmanniana, petraea, planisiliqua subsp. nemorensis, sagittata; Draba cinerea; Erysimum cheiranthoides, hieracifolium; Isatis tinctoria; Noccaea brachypetala, caerulescens, dacica, kovatsii, montana, perfoliata, praecox, stenoptera; Sisymbrium; Thlaspi alliaceum, arvense, “bulbosum”.

synonyms

Puccinia holboellii (Hornemann) Rostrup, 1888.

references

Brandenburger (1985a), Buhr (1964a, 1965a), Coulianos & Karlsson (2014a), Dauphin & Aniotsbehere (1997a), Dietrich (2013a), Gäumann (1959a), González Fragoso (1924a), Klenke & Scholler (2015a), Kropp, Hansen, Wolf ao (1997a), Poelt & Zwetko (1997a), Roskam (2009a), Termorshuizen & Swertz (2011a), Tomasi (2014a), Unamuno (1941a).

mod 18.vii.2019