新伪尾柱虫腹皮层纤毛器微管胞器的形态和形态发生  

Morphology and Morphogenesis of the Ciliature Microtubular Organelle in the Ventral Cortex of Pseudourostyla nova

作　　者：周瑶[1] 余齐耀[1] 俞丽丽[1] 顾福康[1] 

机构地区：[1]华东师范大学生命科学学院,上海200062

出　　处：《动物学杂志》2009年第6期74-80,共7页Chinese Journal of Zoology

基　　金：国家自然科学基金项目(No.30770238)

摘　　要：应用荧光紫杉醇直接荧光标记法显示,腹毛目纤毛虫新伪尾柱虫(Pseudourostyla nova)腹皮层纤毛器微管胞器由口围带、波动膜、额腹横棘毛和左右缘棘毛等纤毛器微管及纤毛器基部附属微管组成。口围带基部含小膜托架及与托架相联系的肋壁微管,其中领部小膜托架间由"∧"形微管相联接;额腹横棘毛基部含前纵微管束、后纵微管束、横微管束和周围微管束,其微管在不同棘毛基部的发达程度不一;缘棘毛基部含前纵微管束、后纵微管束。同时,对新伪尾柱虫纤毛器微管胞器的形态发生和生理改组过程进行了详细的追踪研究,并对细胞皮层的额腹棘毛定位及组成特征进行了补充报道。此外,发现形态发生末期新纤毛器微管形成时,残存部分老额棘毛、横棘毛和缘棘毛,此后老结构逐渐被吸收。结果表明,新伪尾柱虫的纤毛器基部微管具有其种的特异性,新纤毛器微管分化过程中老结构可能具有定位和物质贡献作用。The ciliature microtubular organelles in the ventral cortex of Pseudourostyla nova were visualized using direct FLUTAX. The organelle consists of adoral zone of membranelles （AZM）,undulating membranes （UM）,frontal-midventral-transverse cirri （FVTC）,left and right marginal cirri （L-and RMC） and the base-associated microtubules,etc. In the basal part of the AZM,there are membranelle brackets and associated oral rib-wall microtubules. The membranelle brackets located in the collar portion are connected with ＂∧＂ shaped microtubules. There are four types of microtubules at the base of FVTC： anterior longitudinal （ALM）,posterior longitudinal （PLM）,transverse （TM） and radiate microtubules （RM）. These different types of microtubules differ from each other in developmental degree. The base-associated microtubules of L-and RMC contain ALM and PLM. The old cirri （e.g. frontal,transverse and marginal cirri） can persist and remain unchanged for a long time and they may disappear when they lose function. The base-associated microtubules in the ventral cortex of P.nova possess some species-independent structural characters. During the process of morphogenesis of the ciliatures,the old cirri play a role in positioning and material contribution.

关 键 词：新伪尾柱虫 皮层纤毛器 微管胞器 形态发生 

分 类 号：Q954.4[生物学—动物学]