期刊
PROTIST
卷 170, 期 1, 页码 8-20出版社
ELSEVIER GMBH
DOI: 10.1016/j.protis.2018.09.002
关键词
Amoebozoa; Thecamoebidae; phylogenomics; transcriptome; new genus; new species
类别
资金
- National Science Foundation (NSF, USA) RIA Grant [1409587]
- National Institutes of Health (NIH, USA) [1R15GM116103-01]
- National Science Foundation HBCU-UP [1436759]
- Division Of Human Resource Development
- Direct For Education and Human Resources [1409587, 1436759] Funding Source: National Science Foundation
Thecamoebida Smirnov and Cavalier-Smith, 2011 (Discosea, Amoebozoa) has been molecularly understudied. The group until recently consisted of three genera containing species that live in terrestrial or aquatic environments. Here, we describe a fourth genus, Stratorugosa tubuloviscum gen. nov. sp. nov., which was isolated from a freshwater Amoeba proteus Ward's Science culture. Although this species most closely morphologically resembles a large, rugose Thecamoeba, S. tubuloviscum gen. nov. sp. nov. can be differentiated from Thecamoeba spp. by the following: 1) the presence of definitive finger-like (lobate-like) subpseudopodia extending at both the anterior and lateral parts of the cell during locomotion; 2) a peculiar locomotive mechanism with two sections, frontal and back, of the cells moving in a pulling and piggyback movement, respectively; 3) the presence of fibrillar cytoplasmic microtubules (MTs) organized by a prominent, perinuclear microtubule-organizing center (MTOC). A phylogenomic analysis of 511 genes assembled from transcriptomic data showed that this new genus was highly supported as sister to Stenamoeba. Despite the variance in gross morphology, Stenamoeba and S. tubuloviscum gen nov. sp. nov. both have MTOCs unlike two Thecamoeba spp., which display dot-like cytoplasmic MTs and lack an MTOC. (C) 2018 Elsevier GmbH. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据