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Jeong SY, Nelson WA, Sutherland JE, Peña V, Le Gall L, Diaz-Pulido G, Won BY, Cho TO. Corallinapetrales and Corallinapetraceae: A new order and family of coralline red algae including Corallinapetra gabrielii comb. nov. J Phycol 2021; 57:849-862. [PMID: 33305368 DOI: 10.1111/jpy.13115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 10/26/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
The coralline algal genus Corallinapetra is currently monospecific and was established on the species Corallinapetra novaezelandiae, known from a single collection from north-eastern New Zealand. On the basis of multi-gene phylogenetic analyses, Corallinapetra has been resolved apart from all currently recognized families and orders within the Corallinophycidae. We analyzed DNA sequence data from the holotype of Lithothamnion gabrielii, which has been considered a heterotypic synonym of L. muelleri, and an unidentified sample collected from Stewart Island in New Zealand, using psbA, rbcL, and COI-5P genes. We also observed detailed morpho-anatomical characters with light and scanning electron microscopy. Our phylogenetic analyses showed that L. gabrielii and the sample from New Zealand belonged to the same clade as Corallinapetra, distinct from other families and orders in the Corallinophycidae. Members of this clade are distinguishable from other families and orders in the Corallinophycidae by possessing sporangia that are surrounded by remnant sterile filaments that are weakly calcified in mature multiporate sporangial conceptacles that produce zonately divided tetrasporangia. Therefore, we propose that Corallinapetra be placed in its own family, Corallinapetraceae and order, Corallinapetrales, and that L. gabrielii should be assigned to Corallinapetra, as C. gabrielii, to reflect their phylogenetic relationships. We also obtained a partial rbcL sequence data from the lectotype of L. muelleri, the generitype of Lithothamnion. Comparison of the L. muelleri type sequence with L. gabrielii unambiguously demonstrated that these two species are not conspecific, and confirm the placement of L. muelleri within the Hapalidiales.
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Affiliation(s)
- So Young Jeong
- Australian Rivers Institute-Coast & Estuaries and School of Environment and Science, Nathan Campus, Griffith University, Brisbane, QLD, 4111, Australia
- Department of Life Science, Chosun University, Gwangju, 61452, Korea
| | - Wendy A Nelson
- National Institute of Water and Atmospheric Research, Private Bag 14-901, Wellington, 6241, New Zealand
- School of Biological Sciences, University of Auckland, Private Bag 92-019, Auckland, 1142, New Zealand
| | - Judith E Sutherland
- National Institute of Water and Atmospheric Research, Private Bag 14-901, Wellington, 6241, New Zealand
| | - Viviana Peña
- BIOCOST Research Group, Departamento de Bioloxía, Facultade de Ciencias and Advanced Scientific Research Center (CICA), Universidade da Coruña, 15071 A, Coruña, Spain
| | - Line Le Gall
- Institut Systématique Evolution Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, CNRS, Sorbonne Université, EPHE, 57 rue Cuvier, CP 39, 75005, Paris, France
| | - Guillermo Diaz-Pulido
- School of Environment and Science and Australian Rivers Institute-Coast & Estuaries, Nathan Campus, Griffith University, Brisbane, QLD, 4111, Australia
| | - Boo Yeon Won
- Department of Life Science, Chosun University, Gwangju, 61452, Korea
| | - Tae Oh Cho
- Department of Life Science, Chosun University, Gwangju, 61452, Korea
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