A fine‐structural survey of dinoflagellate pyrenoids and food‐reserves

摘要: About half of the 30 or so species dinoflagellates examined by electron microscopy have been found to possess distinct pyrenoids associated with chloroplasts and having a granular proteinaceous matrix. The fall into following five categories: (A) simple fusiform interlamellar pyrenoid; (B) compound pyrenoid much larger more extensive than previous type; (C) stalked structure usually surrounded starch sheath; (D) complex multiple-stalked supported two chloroplast projections; (E) pyrenoid, matrix which is perforated numerous invaginations envelope. Many dinoflagellates, including all heterotrophic examined, had no obvious pyrenoids. Most organisms both fat food reserves. Many genera exhibit one condition rather similar variety types has in other algal classes. Pyrenoids would appear be little taxonomic value except description individual species.