Abstract
The fine structures of conidia of Cochliobolus miyabeanus were investigated by electron microscopic observations of ultrathin sections of conidia fixed in a solution of 2per cent permanganate buffered with veronal acetate to pH 7.4 and the results were shown in Figs. 1∼7.
Fig. 1. General view of a conidium. The conidium was cut parallely to the long axis of cell.
Fig. 2. Higher magnification of a small area (cf. rectangle in Fig. 1). Note the different orientation of cellulose microfibrils in outer and inner layers.
Fig. 3. Various profiles of mitochondria and endoplasmic reticulum.
Fig. 4. General view of nuclear area.
Fig. 5. Portion of protoplasmic junction. The junction was cut parallely to the long axis of the cell.
Fig. 6. Portion of protoplasmic junction. The junction was cut perpendicularly to the long axis of cell.
Fig. 7. Diagrammatic view of conidium of Cochliobolus miyabeanus reconstructed from the data obtained.
C: cytoplasm N: nucleus
CW: cell wall NM: nuclear membrane
ER: endoplasmic reticulum OL: outer layer
IL: inner layer PJ: protoplasmic junction
M: mitochondria PM: protoplasmic membrane
