Laboratory of Protozoological Biodiversity and Evolution in Wetland, College of Life Sciences, Shaanxi Normal University, Xi'an 710119, China; Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China.
Laboratory of Protozoological Biodiversity and Evolution in Wetland, College of Life Sciences, Shaanxi Normal University, Xi'an 710119, China.
Eur J Protistol. 2021 Oct;81:125795. doi: 10.1016/j.ejop.2021.125795. Epub 2021 Apr 21.
The morphology, morphogenesis, and molecular phylogeny of Bakuella (Pseudobakuella) guangdongica n. sp., isolated from southern China, were investigated. The new species is characterized by a body length of 150-225 μm in vivo; 35-42 adoral membranelles; 3-5 buccal, two frontoterminal, 7-12 transverse and two pretransverse ventral cirri; midventral complex comprised of 10-20 pairs and two rows extending to transverse cirri; posterior part of marginal rows slightly overlapping; colorless cortical granules about 1 μm across, arranged in small groups; soil habitat. Its main ontogenetic features are: (1) in the proter, the parental adoral zone of membranelles is completely renewed by new structures; (2) in the opisthe, the oral primordium originates apokinetally, some old midventral cirri join the formation of frontoventral-transverse cirral anlagen; (3) the anlagen for marginal rows and dorsal kineties develop intrakinetally; and (4) the numerous macronuclear nodules fuse into a single mass before dividing. Phylogenetic analyses based on the SSU rDNA sequence suggest the non-monophyly of the genus Bakuella.
对中国南方分离的巴库埃拉（伪巴库埃拉）广东亚种的形态、形态发生和分子系统发育进行了研究。该新种的特征为活体体长 150-225μm；35-42 条口围前纤毛；3-5 条口纤毛，2 条前端腹侧纤毛，7-12 条横纤毛和 2 条前横腹侧纤毛；中腹复杂结构由 10-20 对和 2 排组成，延伸到横纤毛；边缘排的后部分略微重叠；无色皮层颗粒约 1μm 大小，排列成小群；土壤生境。其主要的个体发生特征为：（1）在Protosoma 中，口围前纤毛的亲代区完全由新结构更新；（2）在Opisthosoma 中，口原基以亚端生的方式起源，一些旧的中腹纤毛加入额腹横纤毛原基的形成；（3）边缘排和背动基体原基以内生的方式发育；（4）在分裂前，大量的大核小体融合成一个整体。基于 SSU rDNA 序列的系统发育分析表明，巴库埃拉属的非单系性。
