PATTERNS OF CELL-DIFFERENTIATION IN SEVERAL CELLULAR SLIME-MOLD SPECIES
PATTERNS OF CELL-DIFFERENTIATION IN SEVERAL CELLULAR SLIME-MOLD SPECIES
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DOI：
10.1016/0012-1606(85)90434-8
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发表时间：
1985-01-01
影响因子：
2.7
通讯作者：
MEI, W
中科院分区：
文献类型：
--
作者：
SCHAAP, P;PINAS, JE;MEI, W
用免疫组织化学和电子显微镜技术研究了几种黏菌的细胞分化模式的发生。在所有物种中，前孢子细胞从聚集后期开始分化。在Dictyosteliallacteum、D.minutom和Polysphondylium Violaceum中，柄细胞是通过前孢子细胞的再分化在柄的顶端形成的，最终形成结构。在紫珠和盘花中，柄细胞是由尚未分化成前孢子细胞或在早期阶段失去了前孢子特性的细胞形成的；在这些物种中，预型的形成可能是由于分选。物种间的差异主要与生物体所占的比例有关，在该区域中，孢子前分化受到了积极的抵消。相对较大的前孢子无细胞区域与顶端将相对较多的细胞组织成单个子实体的能力有关。讨论了细胞分化和形态发生运动的可能的联合控制。
The generation of patterns of cell differentiation in several slime mold species was studied by immunohistology and electron microscopy. In all species differentiation of prespore cells was visible from the late aggregation stage onward. In the species Dictyostelium lacteum, D. minutum, and Polysphondylium violaceum, stalk cells are formed at the apices of slugs and culminating structures by redifferentiation of prespore cells. In D. purpureum and D. discoideum, stalk cells are formed from cells which have not yet differentiated into prespore cells or which have lost their prespore properties at an earlier stage; formation of a prepattern in these species is probably due to sorting. Differences among the species mainly concern the proportion of the organism which is occupied by a region where prespore differentiation is actively counteracted. A relatively large prespore cell-free region is correlated with the capacity of the apex to organize a relatively large number of cells into a single fruiting body. The possible combined control of cell differentiation and morphogenetic movement is discussed.