Volkartia (Volkartia rhaetica)
- Department: Ascomycota (Ascomycetes)
- Subdivision: Taphrinomycotina (Taphrinomycotaceae)
- Chav Kawm: Taphrinomycetes
- Subclass: Taphrinomycetidae (Taphrinomycetes)
- Kev txiav txim: Taphrinales (Taphrines)
- Tsev neeg: Taphrinaceae (Taphrinaceae)
- Hom: Volkartia (Volkartiya)
- hom: Volkartia rhaetica (Volkartia)
Volkartia (lat. Volkartia rhaetica) yog ib tug tshwj xeeb nceb. Nws tsuas yog fungus ntawm genus Volkartia. Qhov no yog ib tug genus ntawm ascomycete fungi (tsev neeg Protomycium). Cov fungus no feem ntau parasitizes cov nroj tsuag ntawm genus Skerda.
Lub genus Volkartia tau tshawb pom thiab muab tso rau hauv kev siv los ntawm R. Mair rov qab rau xyoo 1909, tab sis rau lub sijhawm ntev nws tau ua ke nrog cov genus Taphridium. Tab sis xyoo 1975, cov genus no (thiab fungus) tau rov ua ywj pheej los ntawm Reddy thiab Kramer. Tom qab ntawd nws tau raug lees paub los suav nrog hauv cov genus no qee cov kab mob uas yav dhau los tau koom nrog Taphridium.
Volkarthia suav hais tias yog kab mob cab. Cov fungus ua rau tsaus me ntsis ntawm nplooj ntawm cov nroj tsuag cuam tshuam los ntawm Volcarthia. Cov fungus nws tus kheej feem ntau nyob ntawm ob sab ntawm nplooj. Volkarthia muaj ib tug greyish-dawb xim thiab occupies ib tug ncaj loj ib feem ntawm nplooj ntawm cov nroj tsuag.
Ob peb lo lus hais txog cov qauv sab hauv ntawm cov fungus.
Ascogenous hlwb tsim ib txheej ntawm cov cellular txiav txim siab nyob rau hauv lub epidermis. Feem ntau lawv yog spherical, qhov loj yog 20-30 microns. Lawv loj hlob raws li synasci, tsis muaj lub sij hawm dormant. Nws yog cov tsos ntawm synascos uas yog ib qho txawv feature uas tso cai rau peb cais Volkarthia los ntawm fungi ntawm Tafridium genus. Qhov chaw ntawm ascogenous hlwb tuaj yeem suav tias yog qhov sib txawv ntawm cov kab mob no thiab cov neeg sawv cev ntawm protomyces, nyob rau hauv uas cov hlwb nyob rau hauv lub epidermis yog tawg. Nws tuaj yeem ntxiv tias hauv protomyces, kev tsim ntawm synasces tshwm sim tom qab lub sijhawm dormant. Yog hais tias peb tham txog synasces, ces nyob rau hauv Volcarthia lawv yog cylindrical, lawv loj yog kwv yees li 44-20 µm, lub thickness ntawm lub plhaub tsis muaj xim yog hais txog 1,5-2 µm.
Spores, zoo li lub plhaub, tsis muaj xim, 2,5-2 µm loj, puag ncig lossis ellipsoidal hauv cov duab, tuaj yeem ncaj lossis nkhaus. Ascospores feem ntau yog tsim nyob rau hauv ascogenous cell theem. Spores zoo li loj hlob mycelium tom qab lub sijhawm dormant tas.
Cov fungus no feem ntau parasitizes Crepis blattarioides lossis lwm hom skerda zoo sib xws.
Cov fungus muaj nyob rau hauv lub teb chaws Yelemees, Fabkis, Switzerland thiab Finland, thiab kuj tuaj nyob rau hauv Altai.