<italic style="font-style: italic">Pauciramus yunnanensis</italic>, gen. et sp. nov., a novel freshwater red alga from China with proposal of the Ottiales ord. nov. (Nemaliophycidae, Rhodophyta)

Kunpeng FANG; Fangru NAN; Jia FENG; Junping LÜ; Qi LIU; Xudong LIU; Shulian XIE

doi:10.1007/s00343-021-1154-2

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Pauciramus yunnanensis, gen. et sp. nov., a novel freshwater red alga from China with proposal of the Ottiales ord. nov. (Nemaliophycidae, Rhodophyta)

Biology | Updated：2023-05-20

- Pauciramus yunnanensis, gen. et sp. nov., a novel freshwater red alga from China with proposal of the Ottiales ord. nov. (Nemaliophycidae, Rhodophyta)
- Journal of Oceanology and Limnology Vol. 40, Issue 3, Pages: 1245-1256(2022)
- Affiliations：
  
  School of Life Science, Shanxi Key Laboratory for Research and Development of Regional Plants, Shanxi University, Taiyuan 030006, China
- Author bio：
  
  Shulian XIE, xiesl@sxu.edu.cn
- Funds：
- DOI：10.1007/s00343-021-1154-2
  CLC：
- Published：2022-03
- Accepted：
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Kunpeng FANG, Fangru NAN, Jia FENG, et al. Pauciramus yunnanensis, gen. et sp. nov., a novel freshwater red alga from China with proposal of the Ottiales ord. nov. (Nemaliophycidae, Rhodophyta)[J]. Journal of Oceanology and Limnology, 2022, 40(3): 1245-1256.
DOI：

Kunpeng FANG, Fangru NAN, Jia FENG, et al. Pauciramus yunnanensis, gen. et sp. nov., a novel freshwater red alga from China with proposal of the Ottiales ord. nov. (Nemaliophycidae, Rhodophyta)[J]. Journal of Oceanology and Limnology, 2022, 40(3): 1245-1256. DOI： 10.1007/s00343-021-1154-2.

摘要

Abstract

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

China. It is closely related to

Ottia

and a new order Ottiales was proposed for these genera.

Pauciramus

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 filaments. Phylogenetic analysis of sequence data from the plastid ribulose-1

5-bisphosphate carboxylase-oxygenase large-subunit (

rbc

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

yunnanensis

was in a well-supported clade with

Ottia meiospora

and this clade was sister to order Palmariales and Acrochaetiales. To adhere to the principle of monophyly

a new freshwater order Ottiales including

Ottia

and

Pauciramus

is proposed. Despite the high sequence interspecific divergences and obvious morphological differences between genera

Ottia

and

Pauciramus

seems impractical to establish a new family for a monospecific genus. Therefore

we temporarily classified

Pauciramus

into the family Ottiaceae

and made necessary revisions to the description to accommodate this genus.

关键词

Keywords

references

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Pauciramus yunnanensis, gen. et sp. nov., a novel freshwater red alga from China with proposal of the Ottiales ord. nov. (Nemaliophycidae, Rhodophyta)

DOI：10.1007/s00343-021-1154-2

摘要

Abstract

关键词

Keywords

references