色素纤毛虫弯曲尾草履虫（Blepharisma sinuosum Sawaya，1940）的休眠包囊（纤毛门：异毛纲）
Resting Cysts of the Pigmented Ciliate Blepharisma sinuosum Sawaya, 1940 (Ciliophora: Heterotrichea).
作者信息
Cavaleiro Jéssica, Fernandes Noemi Mendes, da Silva-Neto Inácio D, Soares Carlos Augusto Gomes
机构信息
Departamento de Genética, Universidade Federal do Rio de Janeiro- UFRJ, Av. Carlos Chagas Filho 373 - CCS, Lab. A2-120, Rio de Janeiro, 21.941-617, Brazil.
Departamento de Zoologia, Universidade Federal do Rio de Janeiro - UFRJ, Av. Carlos Chagas Filho 373 - CCS, Lab. A0-74, Rio de Janeiro, 21.941-617, Brazil.
出版信息
J Eukaryot Microbiol. 2018 May;65(3):422-426. doi: 10.1111/jeu.12483. Epub 2018 Feb 1.
The morphology of Blepharisma sinuosum resting cysts and the dynamics of pigmentation at different stages of encystment are presented for the first time. Cyst morphometrics are similar to other Blepharisma species, with three-wall layers, bacteria surrounding the ectocyst, a conical plug, and wrinkly surface toward the plug in mature stages. The vegetative moniliform macronucleus changes to a horseshoe shape, and at early stages, the cystic cytoplasm is homogeneously pigmented, comprising a contractile vacuole; later, pigments polarize toward the plug, decorate the cortical layer, and become brownish. This work reinforces the potential role of pigment dynamics on cyst biology.
首次呈现了弯曲喇叭虫休眠包囊的形态以及包囊形成不同阶段色素沉着的动态变化。包囊形态测量与其他喇叭虫物种相似，有三层壁，外囊周围有细菌，有一个锥形塞，成熟阶段朝向塞的表面有皱纹。营养期的念珠状大核变为马蹄形，在早期，包囊细胞质均匀着色，包含一个伸缩泡；后来，色素向塞极化，装饰皮层，并变为褐色。这项工作强化了色素动态变化在包囊生物学中的潜在作用。
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