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Title: Asterocladon ednae sp. nov. (Asterocladales, Phaeophyceae) from the Philippines

Journal Article · · Phycological Research
DOI: https://doi.org/10.1111/pre.12490 · OSTI ID:1893565
 [1]; ORCiD logo [2]; ORCiD logo [3]
  1. Department of Natural History Sciences, Graduate School of Science Hokkaido University Sapporo Japan
  2. G. T. Velasquez Phycological Herbarium and The Marine Science Institute, College of Science University of the Philippines Quezon City Philippines
  3. Department of Biological Sciences, Faculty of Science Hokkaido University Sapporo Japan
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SUMMARY Members of the brown algal order Asterocladales are characterized by stellate arrangement of its chloroplasts, in which a stellate configuration has a protruding central pyrenoid complex. The order is represented by the genus Asterocladon , which consists of only three species so far. Similar to other small and filamentous seaweeds, studies on Asterocladon remain scant and their diversity poorly understood. To fill this gap, we conducted molecular‐assisted taxonomic studies on Asterocladon based on seven culture isolates collected from Okinawa Prefecture, Japan and Cebu, the Philippines. One culture isolate from the Philippines was revealed to be a new species of Asterocladon based on morpho‐anatomical and molecular analyses using rbc L and psa A genes and is described here as Asterocladon ednae . The other isolates were attributed to A. rhodochortonoides . A. ednae was most closely related to A. rhodochortonoides in morphology and molecular phylogeny but was distinguished from the latter by its elongately ellipsoid plurilocular sporangia. This is the first report of the genus and species A. ednae in the Philippines, further increasing the diversity of seaweeds in the country.

Sponsoring Organization:
USDOE
OSTI ID:
1893565
Journal Information:
Phycological Research, Journal Name: Phycological Research Journal Issue: 4 Vol. 70; ISSN 1322-0829
Publisher:
Wiley-BlackwellCopyright Statement
Country of Publication:
Australia
Language:
English

References (14)

Molecular phylogeny of small brown algae, with special reference to the systematic position of Caepidium antarcticum (adenocystaceae, ectocarpales) journal January 2001
First record of Asteronema rhodochortonoides (Phaeophyceae) for the Pacific Ocean journal November 2001
A single origin of the peridinin- and fucoxanthin-containing plastids in dinoflagellates through tertiary endosymbiosis journal August 2002
Life history and molecular phylogenetic relationships ofAsterocladon interjectumsp. nov. (Phaeophyceae) journal May 2005
Systematics and evolutionary history of pyrenoid-bearing taxa in brown algae (Phaeophyceae) journal November 2011
MEGA X: Molecular Evolutionary Genetics Analysis across Computing Platforms journal May 2018
MrBayes 3.2: Efficient Bayesian Phylogenetic Inference and Model Choice Across a Large Model Space journal February 2012
Re-examination of ultrastructures of the stellate chloroplast organization in brown algae: Structure and development of pyrenoids journal September 2007
Status, morphology, and phylogenetic relationships of Iyengaria (Scytosiphonaceae, Phaeophyceae), a brown algal genus with a disjunct distribution in the Indian Ocean journal September 2020
Asteronema rhodochortonoides nov. comb. (Ectocarpales, Phaeophyceae)–a newly recognized taxon with stellate chloroplast arrangement journal November 1994
Asterocladon lobatum gen. et sp. nov., a new brown alga with stellate chloroplast arrangement, and its systematic position judged from nuclear rDNA sequences journal November 1998
Phylogeny of the order Scytosiphonales (Phaeophyceae) based on DNA sequences of rbcL, partial rbcS, and partial LSU nrDNA journal November 1999
Stellate chloroplast organization in Asteronema breviarticulatum comb. nov. (Ectocarpales, Phaeophyta) journal July 2000
An Updated Classification of Brown Algae (Ochrophyta, Phaeophyceae) journal May 2014

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