Differentiation of Species of Taphrina in Culture. Utilization of Carbon Compounds

SUMMARY

Seventy-four isolates, representing twenty-six species and fifty-five host-forms of Taphrina, were grown in mineral solution with thirty-two different carbon compounds. All of these fungi utilized dextrose, suerose, maltose, melezitose, trehalose, dextrin, inulin, and pectin. All but one (T. polystichi) used xylose and all but two (T. polystichi and T. nana) used succinic acid. None of them used lactose, rhamnose, inositol, nor i-erythritol. With regard to eighteen compounds: galactose, levulose, mannose, raffinose, cellobiose, 1-arabinose, melibiose, 1-sorbose, d-ribose, adonitol, dulcitol, mannitol, d-sorbitol, ethanol, glycerol, salicin, soluble starch, and citric acid, each species exhibited an individual pattern of carbon utilization.

Different host-forms of Taphrina deformans, T. flavorubra, T. robinsoniana, and T. ulmi agreed as to carbon compounds utilized. Other host-forms differed from each other in this respect, sometimes as much as did individual species. There was an approach to agreement between different host-forms of T. communis and also between the fungi from Populus, T. johansonii, T. populina, and T. populi-salicis.

None of these fungi required the addition of thiamine chloride to the medium.