Virescentia guangxiensis (Batrachospermales, Rhodophyta): a new freshwater red algal species from South China

Abstract

Virescentia guangxiensis, a new species of Virescentia from Guangxi, South China, is described and illustrated based on morphological observations and phylogenetic analysis. This species was distinguished morphologically from other species by the presence of special expansion cells with a variable shape, obovoid, spherical, pear-shaped, located in the penultimate cells of primary or secondary fascicles, rarely terminal on primary fascicles, as well as by small whorls (250–350-µm wide) and short primary fascicles (5–7 cell stories). Phylogenetic analysis of molecular data from the rbcL and COI-5P loci supported the separation of the proposed new species from other species in the genus Virescentia. This is the first species of the order Batrachospermales reported in Guangxi and the second species of the genus Virescentia reported in China. This study expands the known species diversity and geographical distribution of freshwater Rhodophyta in China.

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Acknowledgment

Dr. E. W. Christina (The Pennsylvania State University) is acknowledged for the English editing.

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Correspondence to Shulian Xie.

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Data Availability Statement

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

Supported by the National Natural Science Foundation of China (Nos. 31670208, 41871037, 31800172) and the Fund for Shanxi “1331 Project”

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Fang, K., Nan, F., Feng, J. et al. Virescentia guangxiensis (Batrachospermales, Rhodophyta): a new freshwater red algal species from South China. J. Ocean. Limnol. (2021). https://doi.org/10.1007/s00343-020-0225-0

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Keyword

  • Virescentia
  • new species
  • rbcL
  • COI-5P
  • China