Morphology and molecular phylogeny of Pleurosigma pacificum sp. nov. (Pleurosigmataceae), a new tropical pelagic species from the Western Pacific Ocean

doi:10.3897/phytokeys.227.103890

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋生物分类与系统演化实验室

	Morphology and molecular phylogeny of Pleurosigma pacificum sp. nov. (Pleurosigmataceae), a new tropical pelagic species from the Western Pacific Ocean
	Du, Fei-Chao 1,2; Li, Yu-Hang 1; Xu, Kui-Dong 1,2,3
刊名	PHYTOKEYS
	2023-06-02
期号	227 页码:99-108
关键词	Marine diatoms morphology new species phylogeny Pleurosigma Western Pacific Ocean
ISSN号	1314-2011
DOI	10.3897/phytokeys.227.103890
通讯作者	Xu, Kui-Dong(kxu@qdio.ac.cn)
英文摘要	A new species of pelagic diatom, Pleurosigma pacificum sp. nov., is described from the trop-ical Western Pacific Ocean. It has the typical features of Pleurosigma, including a slightly sigmoid raphe, intersected transverse and oblique striae, and loculate areolae with external opening slits and internal poroids. Morphologically, P. pacificum belongs to a species group of Pleurosigma with lanceolate valves, including P. atlanticum Heiden & Kolbe, P. nubecula W. Smith, P. indicum Simonsen, and P. simonsenii Hasle. However, P. pacificum differs by its smaller lanceolate valve and smaller intersection angle as well as elliptical areolae without a silica bar. The SSU rDNA and rbcL sequence data place P. pacificum in a basal position rel-ative to other species of Pleurosigma. Our molecular phylogenetic analyses did not support the monophyly of lanceolate and slightly sigmoid species. Thus, the sigmoidality of valve outline cannot be considered as a criterion to define the species group.
资助项目	National Natural Science Foundation of China[42276099] ; National Natural Science Foundation of China[31800171] ; Oceanographic Data Center, Institute of Oceanology, Chinese Academy of Sciences
WOS关键词	BACILLARIOPHYCEAE ; EVOLUTION ; MARINE
WOS研究方向	Plant Sciences
语种	英语
出版者	PENSOFT PUBLISHERS
WOS记录号	WOS:001012843100002
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/182370]
专题	海洋研究所_海洋生物分类与系统演化实验室
通讯作者	Xu, Kui-Dong
作者单位	1.Chinese Acad Sci, Qingdao Key Lab Marine Biodivers & Conservat, Lab Marine Organism Taxon & Phylogeny, Inst Oceanol,Shandong Prov Key Lab Expt Marine Bio, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Biol & Biotechnol, Qingdao 266237, Peoples R China
推荐引用方式 GB/T 7714	Du, Fei-Chao,Li, Yu-Hang,Xu, Kui-Dong. Morphology and molecular phylogeny of Pleurosigma pacificum sp. nov. (Pleurosigmataceae), a new tropical pelagic species from the Western Pacific Ocean[J]. PHYTOKEYS,2023(227):99-108.
APA	Du, Fei-Chao,Li, Yu-Hang,&Xu, Kui-Dong.(2023).Morphology and molecular phylogeny of Pleurosigma pacificum sp. nov. (Pleurosigmataceae), a new tropical pelagic species from the Western Pacific Ocean.PHYTOKEYS(227),99-108.
MLA	Du, Fei-Chao,et al."Morphology and molecular phylogeny of Pleurosigma pacificum sp. nov. (Pleurosigmataceae), a new tropical pelagic species from the Western Pacific Ocean".PHYTOKEYS .227(2023):99-108.