Developmental morphology of Sarcodia montagneana and S. grandifolia from New Zealand and a phylogeny of Sarcodia (Sarcodiaceae, Rhodophyta) based on rbcL sequence analysis
Despite its widespread distribution in the Indo-West Pacific Ocean, Sarcodia is one of the least understood genera among the red algae. Samples investigated from different parts of the Indo-West Pacific Ocean were well separated phylogenetically, based on rbcL base pair distances, and probably repre...
Published in: | European Journal of Phycology |
---|---|
Main Authors: | , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Taylor and Francis
2011
|
Subjects: | |
Online Access: | http://hdl.handle.net/10256/12301 https://doi.org/10.1080/09670262.2011.580198 |
id |
ftmdx:oai:www.mdx.cat:10503/50262 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
MDX (Learning Materials Online) |
op_collection_id |
ftmdx |
language |
English |
topic |
Algues vermelles -- Classificació Red algae -- Classification Algues vermelles -- Morfologia Red algae -- Morphology Algues vermelles -- Filogènia Red algae -- Phylogeny Algues vermelles -- Pacífic Oceà Red algae -- Pacific Ocean |
spellingShingle |
Algues vermelles -- Classificació Red algae -- Classification Algues vermelles -- Morfologia Red algae -- Morphology Algues vermelles -- Filogènia Red algae -- Phylogeny Algues vermelles -- Pacífic Oceà Red algae -- Pacific Ocean Rodríguez Prieto, Concepció Lin, Showe-Mei Nelson, Wendy A. Hommersand, Max H. Developmental morphology of Sarcodia montagneana and S. grandifolia from New Zealand and a phylogeny of Sarcodia (Sarcodiaceae, Rhodophyta) based on rbcL sequence analysis |
topic_facet |
Algues vermelles -- Classificació Red algae -- Classification Algues vermelles -- Morfologia Red algae -- Morphology Algues vermelles -- Filogènia Red algae -- Phylogeny Algues vermelles -- Pacífic Oceà Red algae -- Pacific Ocean |
description |
Despite its widespread distribution in the Indo-West Pacific Ocean, Sarcodia is one of the least understood genera among the red algae. Samples investigated from different parts of the Indo-West Pacific Ocean were well separated phylogenetically, based on rbcL base pair distances, and probably represent separate species. In this report we investigate the developmental morphology of two species from New Zealand: the type species, Sarcodia montagneana, and S. grandifolia (including S. ‘flabellata’). Molecular studies indicate that S. montagneana is restricted to the north-eastern part of the North Island and that S. grandifolia occurs from Wellington southwards as far as the Snares Islands. Thalli are multiaxial and consist of three primary layers: a surface layer of uninucleate cells, a cortex of five or six layers of polygonal multinucleate cells, and a medulla of multinucleate stellate cells. Secondary rhizoidal filaments are frequent to abundant in the medulla. Spermatangia occur in chains and release spermatia through a pore. The female reproductive system is procarpic and consists of a supporting cell that bears two side branches and a one-celled terminal carpogonium. The auxiliary cell is the basal cell of one of the side branches and is undifferentiated prior to fertilization. After presumed fertilization, the carpogonium separates into a terminal cell and a subterminal hypogynous cell that fuses with the auxiliary cell and deposits in it a single nucleus. The auxiliary cell cuts off a gonimoblast initial obliquely that first forms a short linear chain of gonimoblast cells. Cystocarp formation proceeds rapidly with the outward development of linear files derived from surface cells that differentiate into a terminal ostiole and inner and outer pericarp layers separated by a central cavity. The mature gonimoblasts consist of an inner gonimoblast reticulum of laterally fused cells that attach secondarily to outer cells of the inner pericarp and outer gonimoblast filaments that terminate in short chains of carposporangia. Tetrasporangia are zonately divided and are scattered over the thallus surface with new initials formed continuously. The morphological and molecular observations reported here contrast sharply with those of previous studies and are largely new to the Sarcodia literature This project was supported by two grants from the Spanish Ministry of Science and Technology (CGL2004-05556-C02-01 and CGL2008-00932); by grants from Taiwan’s National Science Council (NSC 99-2621-B-019-003-MY3) and NTOU’s Center of Excellence for Marine Bioenvironment and Biotechnology (99529001 G) to S.-M. Lin; by Foundation for Research Science & Technology contract C01X0502 (New Zealand) grant to W.A. Nelson, and by NSF grant DEB0937978 to J.M. Lopez Bautista, M.H. Hommersand and S. Fredericq |
author2 |
Ministerio de Ciencia y Tecnología (Espanya) Ministerio de Educación y Ciencia (Espanya) |
format |
Article in Journal/Newspaper |
author |
Rodríguez Prieto, Concepció Lin, Showe-Mei Nelson, Wendy A. Hommersand, Max H. |
author_facet |
Rodríguez Prieto, Concepció Lin, Showe-Mei Nelson, Wendy A. Hommersand, Max H. |
author_sort |
Rodríguez Prieto, Concepció |
title |
Developmental morphology of Sarcodia montagneana and S. grandifolia from New Zealand and a phylogeny of Sarcodia (Sarcodiaceae, Rhodophyta) based on rbcL sequence analysis |
title_short |
Developmental morphology of Sarcodia montagneana and S. grandifolia from New Zealand and a phylogeny of Sarcodia (Sarcodiaceae, Rhodophyta) based on rbcL sequence analysis |
title_full |
Developmental morphology of Sarcodia montagneana and S. grandifolia from New Zealand and a phylogeny of Sarcodia (Sarcodiaceae, Rhodophyta) based on rbcL sequence analysis |
title_fullStr |
Developmental morphology of Sarcodia montagneana and S. grandifolia from New Zealand and a phylogeny of Sarcodia (Sarcodiaceae, Rhodophyta) based on rbcL sequence analysis |
title_full_unstemmed |
Developmental morphology of Sarcodia montagneana and S. grandifolia from New Zealand and a phylogeny of Sarcodia (Sarcodiaceae, Rhodophyta) based on rbcL sequence analysis |
title_sort |
developmental morphology of sarcodia montagneana and s. grandifolia from new zealand and a phylogeny of sarcodia (sarcodiaceae, rhodophyta) based on rbcl sequence analysis |
publisher |
Taylor and Francis |
publishDate |
2011 |
url |
http://hdl.handle.net/10256/12301 https://doi.org/10.1080/09670262.2011.580198 |
long_lat |
ENVELOPE(-63.567,-63.567,-64.850,-64.850) |
geographic |
Lopez New Zealand Pacific |
geographic_facet |
Lopez New Zealand Pacific |
genre |
Snares Islands |
genre_facet |
Snares Islands |
op_relation |
MICYT/PN 2004-2007/CGL2004-05556-C02-01 MEC/PN 2009-2011/CGL2008-00932 Reproducció digital del document publicat a: http://dx.doi.org/10.1080/09670262.2011.580198 © European Journal of Phycology, 2011, vol. 46, núm. 2, p. 153-170 Articles publicats (D-CCAA) 0967-0262 (versió paper) 1469-4433 (versió electrònica) http://dx.doi.org/10.1080/09670262.2011.580198 014642 http://hdl.handle.net/10256/12301 |
op_rights |
Tots els drets reservats info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1080/09670262.2011.580198 |
container_title |
European Journal of Phycology |
container_volume |
46 |
container_issue |
2 |
container_start_page |
153 |
op_container_end_page |
170 |
_version_ |
1766197522678677504 |
spelling |
ftmdx:oai:www.mdx.cat:10503/50262 2023-05-15T18:20:03+02:00 Developmental morphology of Sarcodia montagneana and S. grandifolia from New Zealand and a phylogeny of Sarcodia (Sarcodiaceae, Rhodophyta) based on rbcL sequence analysis Rodríguez Prieto, Concepció Lin, Showe-Mei Nelson, Wendy A. Hommersand, Max H. Ministerio de Ciencia y Tecnología (Espanya) Ministerio de Educación y Ciencia (Espanya) 2011 application/pdf http://hdl.handle.net/10256/12301 https://doi.org/10.1080/09670262.2011.580198 eng eng Taylor and Francis MICYT/PN 2004-2007/CGL2004-05556-C02-01 MEC/PN 2009-2011/CGL2008-00932 Reproducció digital del document publicat a: http://dx.doi.org/10.1080/09670262.2011.580198 © European Journal of Phycology, 2011, vol. 46, núm. 2, p. 153-170 Articles publicats (D-CCAA) 0967-0262 (versió paper) 1469-4433 (versió electrònica) http://dx.doi.org/10.1080/09670262.2011.580198 014642 http://hdl.handle.net/10256/12301 Tots els drets reservats info:eu-repo/semantics/closedAccess Algues vermelles -- Classificació Red algae -- Classification Algues vermelles -- Morfologia Red algae -- Morphology Algues vermelles -- Filogènia Red algae -- Phylogeny Algues vermelles -- Pacífic Oceà Red algae -- Pacific Ocean info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2011 ftmdx https://doi.org/10.1080/09670262.2011.580198 2019-05-23T16:28:00Z Despite its widespread distribution in the Indo-West Pacific Ocean, Sarcodia is one of the least understood genera among the red algae. Samples investigated from different parts of the Indo-West Pacific Ocean were well separated phylogenetically, based on rbcL base pair distances, and probably represent separate species. In this report we investigate the developmental morphology of two species from New Zealand: the type species, Sarcodia montagneana, and S. grandifolia (including S. ‘flabellata’). Molecular studies indicate that S. montagneana is restricted to the north-eastern part of the North Island and that S. grandifolia occurs from Wellington southwards as far as the Snares Islands. Thalli are multiaxial and consist of three primary layers: a surface layer of uninucleate cells, a cortex of five or six layers of polygonal multinucleate cells, and a medulla of multinucleate stellate cells. Secondary rhizoidal filaments are frequent to abundant in the medulla. Spermatangia occur in chains and release spermatia through a pore. The female reproductive system is procarpic and consists of a supporting cell that bears two side branches and a one-celled terminal carpogonium. The auxiliary cell is the basal cell of one of the side branches and is undifferentiated prior to fertilization. After presumed fertilization, the carpogonium separates into a terminal cell and a subterminal hypogynous cell that fuses with the auxiliary cell and deposits in it a single nucleus. The auxiliary cell cuts off a gonimoblast initial obliquely that first forms a short linear chain of gonimoblast cells. Cystocarp formation proceeds rapidly with the outward development of linear files derived from surface cells that differentiate into a terminal ostiole and inner and outer pericarp layers separated by a central cavity. The mature gonimoblasts consist of an inner gonimoblast reticulum of laterally fused cells that attach secondarily to outer cells of the inner pericarp and outer gonimoblast filaments that terminate in short chains of carposporangia. Tetrasporangia are zonately divided and are scattered over the thallus surface with new initials formed continuously. The morphological and molecular observations reported here contrast sharply with those of previous studies and are largely new to the Sarcodia literature This project was supported by two grants from the Spanish Ministry of Science and Technology (CGL2004-05556-C02-01 and CGL2008-00932); by grants from Taiwan’s National Science Council (NSC 99-2621-B-019-003-MY3) and NTOU’s Center of Excellence for Marine Bioenvironment and Biotechnology (99529001 G) to S.-M. Lin; by Foundation for Research Science & Technology contract C01X0502 (New Zealand) grant to W.A. Nelson, and by NSF grant DEB0937978 to J.M. Lopez Bautista, M.H. Hommersand and S. Fredericq Article in Journal/Newspaper Snares Islands MDX (Learning Materials Online) Lopez ENVELOPE(-63.567,-63.567,-64.850,-64.850) New Zealand Pacific European Journal of Phycology 46 2 153 170 |