Ultrastructural Analyses Support Different Morphological Lineages in the Phylum Placozoa Grell, 1971
Ultrastructural Analyses Support Different Morphological Lineages in the Phylum Placozoa Grell, 1971
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DOI：
10.1002/jmor.10922
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发表时间：
2011-03-01
影响因子：
1.5
通讯作者：
Balsamo, Maria
中科院分区：
文献类型：
--
作者：
Guidi, Loretta;Eitel, Michael;Balsamo, Maria
对10个克隆长生动物谱系的形态和超微结构进行了研究。我们在细胞和细胞内水平上对几个形态特征进行了评分，并鉴定了克隆之间的许多形态差异。一些差异似乎是克隆特异性的，并且允许仅根据形态标准识别五个不同的谱系。这些数据对于尚未建立的长生动物系统学至关重要。此外，我们在这里描述了扁动物的三个新的诊断形态特征：上皮细胞中的一种新结构，称为“凹盘”，两种不同的纤维细胞亚群，特别是身体边缘的小细胞。此外，纤维细胞似乎排列成多层，形成先前未描述的复杂的三维网络。我们还将边缘细胞描述为先前建议的潜在干细胞类型。基本形态被修改。 J.莫菲尔。 272: 371-378, 2011。(C) 2011 Wiley-Liss, Inc.
The morphology and ultrastructure of 10 clonal placozoan lineages were studied. We scored several morphological characters at a cellular and intracellular level and identified a number of morphological differences among clones. Some differences appear clone specific and allow recognizing five distinct lineages based on morphological criteria only. These data will be crucial for a yet to be established placozoan systematics. Furthermore, we here describe three new diagnostic morphological characters for Placozoa: a new structure in the upper epithelium, called "concave disc," two distinct subpopulations of fiber cells, and especially small cells in the body margin. Besides the fiber cells appear to be arranged in several layers forming a complex, three-dimensional net not previously described. We also describe the marginal cells as the formerly suggested potential stem-cell type. The basic morphology is revised. J. Morphol. 272: 371-378, 2011. (C) 2011 Wiley-Liss, Inc.