The fine structure of conidiogenesis inAlysidium resinae(=Torula ramosa)

摘要

Conidia ofAlysidium resinae(Fr.) M. B. Ellis (=Torula ramosaPeck) arise enteroblastically from polyblastic, ampulliform conidiogenous cells aftermechanicalrupture of the conidiogenous cell wall and are produced in either branched or unbranched acropetalous chains, successively younger conidia being produced enteroblastically from the immediately older conidia. There is no indication that conidial evagination occurs via enzymatically produced channels in the parent wall, protrusion being exclusively mechanical. Attention is drawn to the controversy surrounding the enteroblastic tretic mode of conidiogenesis.