Pauciramus yunnanensis,*** ***.,a novel freshwater red alga from China with proposal of the Ottiales ***.(Nemaliophycidae,Rhodophyta)

作     者：Kunpeng FANG Fangru NAN Jia FENG Junping LÜ Qi LIU Xudong LIU Shulian XIE Kunpeng FANG;Fangru NAN;Jia FENG;Junping Lü;Qi LIU;Xudong LIU;Shulian XIE

作者机构：School of Life ScienceShanxi Key Laboratory for Research and Development of Regional PlantsShanxi UniversityTaiyuan 030006China 

出 版 物：《Journal of Oceanology and Limnology》 (海洋湖沼学报（英文）)

年 卷 期：2022年第40卷第3期

页      面：1245-1256页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 

基　　金：Supported by the National Natural Science Foundation of China (No.41871037 to Shulian XIE and No.31800172 to Fangru NAN) the Fund for Shanxi"1331 Project" 

主　　题：China 5′end of the mitochondrial cytochrome oxidase subunit I(COI-5P) Ottiales Pauciramus ribulose-1,5-bisphosphate carboxylase-oxygenase large-subunit(rbc L) small subunit gene of the ribosomal cistron(SSU) 

摘      要：Species of the red algal order Acrochaetiales mostly inhabit marine environments,with only two freshwater taxa Audouinella and Ottia.A new genus and species are described for freshwater red alga Pauciramus yunnanensis from Ailao Mountain,Yunnan,*** is closely related to Ottia and a new order Ottiales was proposed for these *** has unique combination of morphological characteristics including the following:plants caespitose and densely pulvinate,slender uniseriate filaments with well-developed rhizoids,rarely branched,cylindrical vegetative cell with a single,ribbon-shaped and parietal chloroplast,reproduction by tetrasporangia,and dense sporangial branchlet only at the upper portion of *** analysis of sequence data from the plastid ribulose-1,5-bisphosphate carboxylase-oxygenase large-subunit(rbc L),small subunit gene of the ribosomal cistron(SSU)and barcode region near the 5′end of the mitochondrial cytochrome oxidase subunit I(COI-5P)indicated that:the new taxon,***,was in a well-supported clade with Ottia meiospora,and this clade was sister to order Palmariales and *** adhere to the principle of monophyly,a new freshwater order Ottiales including Ottia and Pauciramus is *** the high sequence interspecific divergences and obvious morphological differences between genera Ottia and Pauciramus,seems impractical to establish a new family for a monospecific ***,we temporarily classified Pauciramus into the family Ottiaceae,and made necessary revisions to the description to accommodate this genus.