Lineaperpetua gen.nov.:a new diatom genus in the Thalassiosirales supported by morphology and molecular data  

作　　者：Pan YU Lin YANG Qingmin YOU John Patrick KOCIOLEK Kangyu WANG Yonghong BI Quanxi WANG 

机构地区：[1]College of Life Sciences,Shanghai Normal University,Shanghai 200234,China [2]Institute of Hydrobiology,Chinese Academy of Sciences,Wuhan 430072,China [3]Museum of Natural History and Department of Ecology and Evolutionary Biology,University of Colorado,UCB 218,Boulder CO 80309,USA

出　　处：《Journal of Oceanology and Limnology》2024年第1期277-290,共14页海洋湖沼学报（英文）

基　　金：the Postdoctoral Science Foundation of China(No.2021 M 703434);the National Natural Science Foundation of China(Nos.32100165,32170205);the Natural Science Foundation of Shanghai(No.21 ZR 144730)。

摘　　要：Based on a combination of morphology and molecular data of ribosomal DNA genes,a new diatom genus Lineaperpetua gen.nov.Yu,You,Kociolek&Wang is described.The features that help define Lineaperpetua at the level of genus include:a tangentially undulated valve face;continuous cribra areolae on the valve interior consisting of pores arranged as strips;single rimoportula located inside the ring of marginal fultoportulae.Additionally,phylogenetic analysis based on nuclear small subunit(SSU)rDNA sequences and nuclear large subunit(LSU)rDNA gene placed the three strains of L.lacustris in a single,monophyletic clade at a considerable sequence distance from the other genera(Thalassiosira,Conticribra,Planktoniella,Shinodiscus,and other genera)belonging to Thalassiosirales.Despite the similarities with some species of Thalassiosira,Conticribra,and Spicaticribra,the suite of features found in Lineaperpetua differentiate it from these other genera.These molecular data and morphological characters suggest an affinity of the new genus to the Thalassiosiraceae.

关 键 词：DIATOM MORPHOLOGY new genus PHYLOGENY TAXONOMY Thalassiosiraceae 

分 类 号：Q949[生物学—植物学]