Chang M T, Raper K B
J Bacteriol. 1981 Sep;147(3):1049-53. doi: 10.1128/jb.147.3.1049-1053.1981.
Macrocysts have been found among strains of Dictyostelium rosarium Raper and Cavender (K. B. Raper and J. C. Cavender, J. Elisha Mitchell Sci. Soc. 84:31-47, 1968). Strains that exhibit mating capabilities could be classified into one of three mating types: A1, A2, or A3. Each mating type was self-incompatible but cross-compatible with the other two types in most cases. No self-fertile strain was observed. Wet conditions, darkness, and moderate nutrient particularly favored macrocyst production; opposite conditions generally favored asexual sorocarp formation. Macrocyst development followed the same morphogenetic pattern reported previously for other species of Dictyostelium. Cultures exposed to light in stages prior to precyst appearance could be switched from macrocyst to sorocarp development. In contrast, precysts always developed into macrocysts despite the presence of light. There appeared to be an "all-or-none" phenomenon in macrocyst production, suggesting that transformation to macrocysts occurred once certain light-sensitive critical factors had reached a threshold level. Intimate association of cells of mating pairs appeared to be essential for macrocyst formation, and no mating hormones were detected.
在玫瑰盘基网柄菌（Raper and Cavender, K. B. Raper and J. C. Cavender, J. Elisha Mitchell Sci. Soc. 84:31 - 47, 1968）的菌株中发现了大囊。具有交配能力的菌株可分为三种交配类型之一：A1、A2或A3。每种交配类型都是自交不亲和的，但在大多数情况下与其他两种类型是杂交亲和的。未观察到自育菌株。潮湿条件、黑暗和适度营养特别有利于大囊的产生；相反的条件通常有利于无性子实体的形成。大囊的发育遵循先前报道的其他盘基网柄菌属物种的相同形态发生模式。在预囊出现之前的阶段暴露于光照的培养物可以从大囊发育转变为子实体发育。相反，尽管有光照，预囊总是发育成大囊。大囊产生似乎存在一种“全或无”现象，这表明一旦某些光敏感关键因素达到阈值水平，就会发生向大囊的转变。交配型细胞的紧密结合似乎是大囊形成所必需的，并且未检测到交配激素。
