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Different Growth and Sporulation Responses to Temperature Gradient among Obligate Apomictic Strains of Ulva prolifera

The green macroalga Ulva prolifera has a number of variants, some of which are asexual (independent from sexual variants). Although it has been harvested for food, the yield is decreasing. To meet market demand, developing elite cultivars is required. The present study investigated the genetic stabi...

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Autores principales: Sato, Yoichi, Kinoshita, Yutaro, Mogamiya, Miho, Inomata, Eri, Hoshino, Masakazu, Hiraoka, Masanori
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8617885/
https://www.ncbi.nlm.nih.gov/pubmed/34834619
http://dx.doi.org/10.3390/plants10112256
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author Sato, Yoichi
Kinoshita, Yutaro
Mogamiya, Miho
Inomata, Eri
Hoshino, Masakazu
Hiraoka, Masanori
author_facet Sato, Yoichi
Kinoshita, Yutaro
Mogamiya, Miho
Inomata, Eri
Hoshino, Masakazu
Hiraoka, Masanori
author_sort Sato, Yoichi
collection PubMed
description The green macroalga Ulva prolifera has a number of variants, some of which are asexual (independent from sexual variants). Although it has been harvested for food, the yield is decreasing. To meet market demand, developing elite cultivars is required. The present study investigated the genetic stability of asexual variants, genotype (hsp90 gene sequences) and phenotype variations across a temperature gradient (10–30 °C) in an apomictic population. Asexual variants were collected from six localities in Japan and were isolated as an unialgal strain. The hsp90 gene sequences of six strains were different and each strain included multiple distinct alleles, suggesting that the strains were diploid and heterozygous. The responses of growth and sporulation versus temperature differed among strains. Differences in thermosensitivity among strains could be interpreted as the result of evolution and processes of adaptation to site-specific environmental conditions. Although carbon content did not differ among strains and cultivation temperatures, nitrogen content tended to increase at higher temperatures and there were differences among strains. A wide variety of asexual variants stably reproducing clonally would be advantageous in selecting elite cultivars for long-term cultivation. Using asexual variants as available resources for elite cultivars provides potential support for increasing the productivity of U. prolifera.
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spelling pubmed-86178852021-11-27 Different Growth and Sporulation Responses to Temperature Gradient among Obligate Apomictic Strains of Ulva prolifera Sato, Yoichi Kinoshita, Yutaro Mogamiya, Miho Inomata, Eri Hoshino, Masakazu Hiraoka, Masanori Plants (Basel) Article The green macroalga Ulva prolifera has a number of variants, some of which are asexual (independent from sexual variants). Although it has been harvested for food, the yield is decreasing. To meet market demand, developing elite cultivars is required. The present study investigated the genetic stability of asexual variants, genotype (hsp90 gene sequences) and phenotype variations across a temperature gradient (10–30 °C) in an apomictic population. Asexual variants were collected from six localities in Japan and were isolated as an unialgal strain. The hsp90 gene sequences of six strains were different and each strain included multiple distinct alleles, suggesting that the strains were diploid and heterozygous. The responses of growth and sporulation versus temperature differed among strains. Differences in thermosensitivity among strains could be interpreted as the result of evolution and processes of adaptation to site-specific environmental conditions. Although carbon content did not differ among strains and cultivation temperatures, nitrogen content tended to increase at higher temperatures and there were differences among strains. A wide variety of asexual variants stably reproducing clonally would be advantageous in selecting elite cultivars for long-term cultivation. Using asexual variants as available resources for elite cultivars provides potential support for increasing the productivity of U. prolifera. MDPI 2021-10-22 /pmc/articles/PMC8617885/ /pubmed/34834619 http://dx.doi.org/10.3390/plants10112256 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sato, Yoichi
Kinoshita, Yutaro
Mogamiya, Miho
Inomata, Eri
Hoshino, Masakazu
Hiraoka, Masanori
Different Growth and Sporulation Responses to Temperature Gradient among Obligate Apomictic Strains of Ulva prolifera
title Different Growth and Sporulation Responses to Temperature Gradient among Obligate Apomictic Strains of Ulva prolifera
title_full Different Growth and Sporulation Responses to Temperature Gradient among Obligate Apomictic Strains of Ulva prolifera
title_fullStr Different Growth and Sporulation Responses to Temperature Gradient among Obligate Apomictic Strains of Ulva prolifera
title_full_unstemmed Different Growth and Sporulation Responses to Temperature Gradient among Obligate Apomictic Strains of Ulva prolifera
title_short Different Growth and Sporulation Responses to Temperature Gradient among Obligate Apomictic Strains of Ulva prolifera
title_sort different growth and sporulation responses to temperature gradient among obligate apomictic strains of ulva prolifera
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8617885/
https://www.ncbi.nlm.nih.gov/pubmed/34834619
http://dx.doi.org/10.3390/plants10112256
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