Symbiotic associations in the phenotypically-diverse brown alga Saccharina japonica.

The brown alga Saccharina japonica (Areschoug) Lane, Mayes, Druehl et Saunders is a highly polymorphic representative of the family Laminariaceae, inhabiting the northwest Pacific region. We have obtained 16S rRNA sequence data in symbiont microorganisms of the typical form (TYP) of S. japonica and...

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Autores principales:	Evgeniy S Balakirev, Tatiana N Krupnova, Francisco J Ayala
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/81f9efb743544adea5dc692400f07a4a
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spelling	oai:doaj.org-article:81f9efb743544adea5dc692400f07a4a2021-11-18T07:14:48ZSymbiotic associations in the phenotypically-diverse brown alga Saccharina japonica.1932-620310.1371/journal.pone.0039587https://doaj.org/article/81f9efb743544adea5dc692400f07a4a2012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22745792/?tool=EBIhttps://doaj.org/toc/1932-6203The brown alga Saccharina japonica (Areschoug) Lane, Mayes, Druehl et Saunders is a highly polymorphic representative of the family Laminariaceae, inhabiting the northwest Pacific region. We have obtained 16S rRNA sequence data in symbiont microorganisms of the typical form (TYP) of S. japonica and its common morphological varieties, known as "longipes" (LON) and "shallow-water" (SHA), which show contrasting bathymetric distribution and sharp morphological, life history traits, and ecological differences. Phylogenetic analysis of the 16S rRNA sequences shows that the microbial communities are significantly different in the three forms studied and consist of mosaic sets of common and form-specific bacterial lineages. The divergence in bacterial composition is substantial between the TYP and LON forms in spite of their high genetic similarity. The symbiont distribution in the S. japonica forms and in three other laminarialean species is not related to the depth or locality of the algae settlements. Combined with our previous results on symbiont associations in sea urchins and taking into account the highly specific character of bacteria-algae associations, we propose that the TYP and LON forms may represent incipient species passing through initial steps of reproductive isolation. We suggest that phenotype differences between genetically similar forms may be caused by host-symbiont interactions that may be a general feature of evolution in algae and other eukaryote organisms. Bacterial symbionts could serve as sensitive markers to distinguish genetically similar algae forms and also as possible growth-promoting inductors to increase algae productivity.Evgeniy S BalakirevTatiana N KrupnovaFrancisco J AyalaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 6, p e39587 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Evgeniy S Balakirev Tatiana N Krupnova Francisco J Ayala Symbiotic associations in the phenotypically-diverse brown alga Saccharina japonica.
description	The brown alga Saccharina japonica (Areschoug) Lane, Mayes, Druehl et Saunders is a highly polymorphic representative of the family Laminariaceae, inhabiting the northwest Pacific region. We have obtained 16S rRNA sequence data in symbiont microorganisms of the typical form (TYP) of S. japonica and its common morphological varieties, known as "longipes" (LON) and "shallow-water" (SHA), which show contrasting bathymetric distribution and sharp morphological, life history traits, and ecological differences. Phylogenetic analysis of the 16S rRNA sequences shows that the microbial communities are significantly different in the three forms studied and consist of mosaic sets of common and form-specific bacterial lineages. The divergence in bacterial composition is substantial between the TYP and LON forms in spite of their high genetic similarity. The symbiont distribution in the S. japonica forms and in three other laminarialean species is not related to the depth or locality of the algae settlements. Combined with our previous results on symbiont associations in sea urchins and taking into account the highly specific character of bacteria-algae associations, we propose that the TYP and LON forms may represent incipient species passing through initial steps of reproductive isolation. We suggest that phenotype differences between genetically similar forms may be caused by host-symbiont interactions that may be a general feature of evolution in algae and other eukaryote organisms. Bacterial symbionts could serve as sensitive markers to distinguish genetically similar algae forms and also as possible growth-promoting inductors to increase algae productivity.
format	article
author	Evgeniy S Balakirev Tatiana N Krupnova Francisco J Ayala
author_facet	Evgeniy S Balakirev Tatiana N Krupnova Francisco J Ayala
author_sort	Evgeniy S Balakirev
title	Symbiotic associations in the phenotypically-diverse brown alga Saccharina japonica.
title_short	Symbiotic associations in the phenotypically-diverse brown alga Saccharina japonica.
title_full	Symbiotic associations in the phenotypically-diverse brown alga Saccharina japonica.
title_fullStr	Symbiotic associations in the phenotypically-diverse brown alga Saccharina japonica.
title_full_unstemmed	Symbiotic associations in the phenotypically-diverse brown alga Saccharina japonica.
title_sort	symbiotic associations in the phenotypically-diverse brown alga saccharina japonica.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/81f9efb743544adea5dc692400f07a4a
work_keys_str_mv	AT evgeniysbalakirev symbioticassociationsinthephenotypicallydiversebrownalgasaccharinajaponica AT tatianankrupnova symbioticassociationsinthephenotypicallydiversebrownalgasaccharinajaponica AT franciscojayala symbioticassociationsinthephenotypicallydiversebrownalgasaccharinajaponica
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Symbiotic associations in the phenotypically-diverse brown alga Saccharina japonica.

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