干旱区生态环境知识资源中心(Arid): Cell-division pattern and phylogenetic analyses of a new ciliate genus Parasincirra n. g. (Protista, Ciliophora, Hypotrichia), with a report of a new soil species, P. sinica n. sp. from northwest China

Arid

DOI	10.1186/s12862-020-01730-4
	Cell-division pattern and phylogenetic analyses of a new ciliate genus Parasincirra n. g. (Protista, Ciliophora, Hypotrichia), with a report of a new soil species, P. sinica n. sp. from northwest China
	Ma, Jiyang; Zhao, Yan; Zhang, Tengyue; Shao, Chen; Al-Rasheid, Khaled A. S.; Song, Weibo
通讯作者	Shao, C (corresponding author), Shaanxi Normal Univ, Lab Protozool Biodivers & Evolut Wetland, Coll Life Sci, Xian 710119, Peoples R China.
来源期刊	BMC ECOLOGY AND EVOLUTION
EISSN	2730-7182
出版年	2021
卷号	21 期号:1
英文摘要	BackgroundCiliated protists, a huge assemblage of unicellular eukaryotes, are extremely diverse and play important ecological roles in most habitats where there is sufficient moisture for their survivals. Even though there is a growing recognition that these organisms are associated with many ecological or environmental processes, their biodiversity is poorly understood and many biotopes (e.g. soils in desert areas of Asia) remain largely unknown. Here we document an undescribed form found in sludge soil in a halt-desert inland of China. Investigations of its morphology, morphogenesis and molecular phylogeny indicate that it represents a new genus and new species, Parasincirra sinica n. g., n. sp.ResultsThe new, monotypic genus Parasincirra n. g. is defined by having three frontal cirri, an amphisiellid median cirral row about the same length as the adoral zone, one short frontoventral cirral row, cirrus III/2 and transverse cirri present, buccal and caudal cirri absent, one right and one left marginal row and three dorsal kineties. The main morphogenetic features of the new taxon are: (1) frontoventral-transverse cirral anlagen II to VI are formed in a primary mode; (2) the amphisiellid median cirral row is formed by anlagen V and VI, while the frontoventral row is generated from anlage IV; (3) cirral streaks IV to VI generate one transverse cirrus each; (4) frontoventral-transverse cirral anlage II generates one or two cirri, although the posterior one (when formed) will be absorbed in late stages, that is, no buccal cirrus is formed; (5) the posterior part of the parental adoral zone of membranelles is renewed; (6) dorsal morphogenesis follows a typical Gonostomum-pattern; and (7) the macronuclear nodules fuse to form a single mass. The investigation of its molecular phylogeny inferred from Bayesian inference and Maximum likelihood analyses based on small subunit ribosomal DNA (SSU rDNA) sequence data, failed to reveal its exact systematic position, although species of related genera are generally assigned to the family Amphisiellidae Jankowski, 1979. Morphological and morphogenetic differences between the new taxon and Uroleptoides Wenzel, 1953, Parabistichella Jiang et al., 2013, and other amphisiellids clearly support the validity of Parasincirra as a new genus. The monophyly of the family Amphisiellidae is rejected by the AU test in this study.ConclusionsThe critical character of the family Amphisiellidae, i.e., the amphisiellid median cirral row, might result from convergent evolution in different taxa. Amphisiellidae are not monophyletic.
英文关键词	New species Morphology Morphogenesis Parasincirra SSU rDNA phylogeny
类型	Article
语种	英语
开放获取类型	gold, Green Published, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000620073300001
WOS关键词	MOLECULAR PHYLOGENY ; NOV CILIOPHORA ; MORPHOLOGY ; ESTABLISHMENT ; MORPHOGENESIS ; ONTOGENY
WOS类目	Ecology ; Evolutionary Biology ; Genetics & Heredity
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology ; Genetics & Heredity
来源机构	King Saud University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349726
作者单位	[Ma, Jiyang; Zhang, Tengyue; Song, Weibo] Ocean Univ China, Inst Evolut & Marine Biodivers, Qingdao 266003, Peoples R China; [Ma, Jiyang; Zhang, Tengyue; Song, Weibo] Ocean Univ China, Coll Fisheries, Qingdao 266003, Peoples R China; [Ma, Jiyang; Shao, Chen; Song, Weibo] Shaanxi Normal Univ, Lab Protozool Biodivers & Evolut Wetland, Coll Life Sci, Xian 710119, Peoples R China; [Zhao, Yan] Capital Normal Univ, Coll Life Sci, Beijing 100048, Peoples R China; [Al-Rasheid, Khaled A. S.] King Saud Univ, Coll Sci, Zool Dept, Riyadh 11451, Saudi Arabia; [Song, Weibo] Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266003, Peoples R China
推荐引用方式 GB/T 7714	Ma, Jiyang,Zhao, Yan,Zhang, Tengyue,et al. Cell-division pattern and phylogenetic analyses of a new ciliate genus Parasincirra n. g. (Protista, Ciliophora, Hypotrichia), with a report of a new soil species, P. sinica n. sp. from northwest China[J]. King Saud University,2021,21(1).
APA	Ma, Jiyang,Zhao, Yan,Zhang, Tengyue,Shao, Chen,Al-Rasheid, Khaled A. S.,&Song, Weibo.(2021).Cell-division pattern and phylogenetic analyses of a new ciliate genus Parasincirra n. g. (Protista, Ciliophora, Hypotrichia), with a report of a new soil species, P. sinica n. sp. from northwest China.BMC ECOLOGY AND EVOLUTION,21(1).
MLA	Ma, Jiyang,et al."Cell-division pattern and phylogenetic analyses of a new ciliate genus Parasincirra n. g. (Protista, Ciliophora, Hypotrichia), with a report of a new soil species, P. sinica n. sp. from northwest China".BMC ECOLOGY AND EVOLUTION 21.1(2021).