Two new species of Padina (Dictyotales, Phaeophyceae) from southern Japan, P. ogasawaraensis sp. nov. and P. reniformis sp. nov., based on morphology and molecular markers

Ni Ni Win, Takeaki Hanyuda, Aki Kato, Hiroshi Kawai

Research output: Contribution to journalArticle

Abstract

Two new bistratose species of the brown algal genus Padina, P. ogasawaraensis sp. nov. and P. reniformis, sp. nov., were discovered from Ogasawara and Okinawa Islands and Kagoshima, Japan, respectively, and characterised based on a combination of morphological and molecular analyses. Padina ogasawaraensis is characterised by a
semicircular or circular yellowish-brown thallus with light to heavy calcification except at the hairlines and presence of hairlines on both surfaces in an alternating sequence. These can be seen as a broad-depressed line with a remnant of a thin red hairline at its center on the inferior surface and as a narrow or sometimes rudimentary line on the superior surface. Indusiate reproductive sori are located distally adjacent to the hairlines on the inferior surface, partially to deeply embedded in the epidermis layer. Padina reniformis is characterised by a semicircular or kidney-shaped greenish brown
thallus with light to moderate calcification on both surfaces of the thallus. Hairlines are present only on one (inferior) surface and are narrow, not depressed. Indusiate tetrasporangial sori are arranged in two to three rows between the hairlines on the inferior surface and situated on the thallus surface. Molecular phylogenetic analyses using rbcL and cox3 DNA sequences placed them in distantly related clades. Padina ogasawaraensis showed a sister relationship to P. calcarea; whereas, P. reniformis was sister to P. fasciata.
Original languageEnglish
JournalPhycologia
Publication statusAccepted/In press - Sep 2 2017

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Dictyotales
Phaeophyceae
Japan
new species
genetic markers
thallus
calcification
Padina
marker
Ryukyu Archipelago
epidermis (animal)
kidneys
phylogenetics
nucleotide sequences
DNA

Cite this

@article{8e3647141f3d4086b1618b632007f939,
title = "Two new species of Padina (Dictyotales, Phaeophyceae) from southern Japan, P. ogasawaraensis sp. nov. and P. reniformis sp. nov., based on morphology and molecular markers",
abstract = "Two new bistratose species of the brown algal genus Padina, P. ogasawaraensis sp. nov. and P. reniformis, sp. nov., were discovered from Ogasawara and Okinawa Islands and Kagoshima, Japan, respectively, and characterised based on a combination of morphological and molecular analyses. Padina ogasawaraensis is characterised by asemicircular or circular yellowish-brown thallus with light to heavy calcification except at the hairlines and presence of hairlines on both surfaces in an alternating sequence. These can be seen as a broad-depressed line with a remnant of a thin red hairline at its center on the inferior surface and as a narrow or sometimes rudimentary line on the superior surface. Indusiate reproductive sori are located distally adjacent to the hairlines on the inferior surface, partially to deeply embedded in the epidermis layer. Padina reniformis is characterised by a semicircular or kidney-shaped greenish brownthallus with light to moderate calcification on both surfaces of the thallus. Hairlines are present only on one (inferior) surface and are narrow, not depressed. Indusiate tetrasporangial sori are arranged in two to three rows between the hairlines on the inferior surface and situated on the thallus surface. Molecular phylogenetic analyses using rbcL and cox3 DNA sequences placed them in distantly related clades. Padina ogasawaraensis showed a sister relationship to P. calcarea; whereas, P. reniformis was sister to P. fasciata.",
author = "Win, {Ni Ni} and Takeaki Hanyuda and Aki Kato and Hiroshi Kawai",
year = "2017",
month = "9",
day = "2",
language = "English",
journal = "Phycologia",
issn = "0031-8884",
publisher = "International Phycological Society",

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TY - JOUR

T1 - Two new species of Padina (Dictyotales, Phaeophyceae) from southern Japan, P. ogasawaraensis sp. nov. and P. reniformis sp. nov., based on morphology and molecular markers

AU - Win, Ni Ni

AU - Hanyuda, Takeaki

AU - Kato, Aki

AU - Kawai, Hiroshi

PY - 2017/9/2

Y1 - 2017/9/2

N2 - Two new bistratose species of the brown algal genus Padina, P. ogasawaraensis sp. nov. and P. reniformis, sp. nov., were discovered from Ogasawara and Okinawa Islands and Kagoshima, Japan, respectively, and characterised based on a combination of morphological and molecular analyses. Padina ogasawaraensis is characterised by asemicircular or circular yellowish-brown thallus with light to heavy calcification except at the hairlines and presence of hairlines on both surfaces in an alternating sequence. These can be seen as a broad-depressed line with a remnant of a thin red hairline at its center on the inferior surface and as a narrow or sometimes rudimentary line on the superior surface. Indusiate reproductive sori are located distally adjacent to the hairlines on the inferior surface, partially to deeply embedded in the epidermis layer. Padina reniformis is characterised by a semicircular or kidney-shaped greenish brownthallus with light to moderate calcification on both surfaces of the thallus. Hairlines are present only on one (inferior) surface and are narrow, not depressed. Indusiate tetrasporangial sori are arranged in two to three rows between the hairlines on the inferior surface and situated on the thallus surface. Molecular phylogenetic analyses using rbcL and cox3 DNA sequences placed them in distantly related clades. Padina ogasawaraensis showed a sister relationship to P. calcarea; whereas, P. reniformis was sister to P. fasciata.

AB - Two new bistratose species of the brown algal genus Padina, P. ogasawaraensis sp. nov. and P. reniformis, sp. nov., were discovered from Ogasawara and Okinawa Islands and Kagoshima, Japan, respectively, and characterised based on a combination of morphological and molecular analyses. Padina ogasawaraensis is characterised by asemicircular or circular yellowish-brown thallus with light to heavy calcification except at the hairlines and presence of hairlines on both surfaces in an alternating sequence. These can be seen as a broad-depressed line with a remnant of a thin red hairline at its center on the inferior surface and as a narrow or sometimes rudimentary line on the superior surface. Indusiate reproductive sori are located distally adjacent to the hairlines on the inferior surface, partially to deeply embedded in the epidermis layer. Padina reniformis is characterised by a semicircular or kidney-shaped greenish brownthallus with light to moderate calcification on both surfaces of the thallus. Hairlines are present only on one (inferior) surface and are narrow, not depressed. Indusiate tetrasporangial sori are arranged in two to three rows between the hairlines on the inferior surface and situated on the thallus surface. Molecular phylogenetic analyses using rbcL and cox3 DNA sequences placed them in distantly related clades. Padina ogasawaraensis showed a sister relationship to P. calcarea; whereas, P. reniformis was sister to P. fasciata.

M3 - Article

JO - Phycologia

JF - Phycologia

SN - 0031-8884

ER -