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Gene Cloning, Expression and Activity Analysis of Manganese Superoxide Dismutase from Two Strains of Gracilaria lemaneiformis (Gracilariaceae, Rhodophyta) under Heat Stress

Manganese superoxide dismutase (Mn-SOD) plays a crucial role in antioxidant responses to environmental stress. To determine whether Mn-SOD affects heat resistance of Gracilaria lemaneiformis, we cloned Mn-SOD cDNA sequences of two strains of this red alga, wild type and cultivar 981. Both cDNA seque...

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Autores principales: Lu, Ning, Zang, Xiaonan, Zhang, Xuecheng, Chen, Hao, Feng, Xiaoting, Zhang, Lu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6268981/
https://www.ncbi.nlm.nih.gov/pubmed/22508332
http://dx.doi.org/10.3390/molecules17044522
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author Lu, Ning
Zang, Xiaonan
Zhang, Xuecheng
Chen, Hao
Feng, Xiaoting
Zhang, Lu
author_facet Lu, Ning
Zang, Xiaonan
Zhang, Xuecheng
Chen, Hao
Feng, Xiaoting
Zhang, Lu
author_sort Lu, Ning
collection PubMed
description Manganese superoxide dismutase (Mn-SOD) plays a crucial role in antioxidant responses to environmental stress. To determine whether Mn-SOD affects heat resistance of Gracilaria lemaneiformis, we cloned Mn-SOD cDNA sequences of two strains of this red alga, wild type and cultivar 981. Both cDNA sequences contained an ORF of 675 bp encoding 224 amino acid residues. The cDNA sequences and the deduced amino acid sequences of the two strains shared relatively high identity (more than 99%). No intron existed in genomic DNA of Mn-SOD in G. lemaneiformis. Southern blotting indicated that there were multiple copies, possibly four, of Mn-SOD in both strains. Both in the wild type and cultivar 981, SOD mRNA transcription and SOD activity increased under high temperature stress, while cultivar 981 was more heat resistant based on its SOD activity. This research suggests that there may be a direct relationship between SOD activity and the heat resistance of G. lemaneiformis.
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spelling pubmed-62689812018-12-11 Gene Cloning, Expression and Activity Analysis of Manganese Superoxide Dismutase from Two Strains of Gracilaria lemaneiformis (Gracilariaceae, Rhodophyta) under Heat Stress Lu, Ning Zang, Xiaonan Zhang, Xuecheng Chen, Hao Feng, Xiaoting Zhang, Lu Molecules Article Manganese superoxide dismutase (Mn-SOD) plays a crucial role in antioxidant responses to environmental stress. To determine whether Mn-SOD affects heat resistance of Gracilaria lemaneiformis, we cloned Mn-SOD cDNA sequences of two strains of this red alga, wild type and cultivar 981. Both cDNA sequences contained an ORF of 675 bp encoding 224 amino acid residues. The cDNA sequences and the deduced amino acid sequences of the two strains shared relatively high identity (more than 99%). No intron existed in genomic DNA of Mn-SOD in G. lemaneiformis. Southern blotting indicated that there were multiple copies, possibly four, of Mn-SOD in both strains. Both in the wild type and cultivar 981, SOD mRNA transcription and SOD activity increased under high temperature stress, while cultivar 981 was more heat resistant based on its SOD activity. This research suggests that there may be a direct relationship between SOD activity and the heat resistance of G. lemaneiformis. MDPI 2012-04-16 /pmc/articles/PMC6268981/ /pubmed/22508332 http://dx.doi.org/10.3390/molecules17044522 Text en © 2012 by the authors; licensee MDPI, Basel, Switzerland. http://creativecommons.org/licenses/by/3.0/ This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Lu, Ning
Zang, Xiaonan
Zhang, Xuecheng
Chen, Hao
Feng, Xiaoting
Zhang, Lu
Gene Cloning, Expression and Activity Analysis of Manganese Superoxide Dismutase from Two Strains of Gracilaria lemaneiformis (Gracilariaceae, Rhodophyta) under Heat Stress
title Gene Cloning, Expression and Activity Analysis of Manganese Superoxide Dismutase from Two Strains of Gracilaria lemaneiformis (Gracilariaceae, Rhodophyta) under Heat Stress
title_full Gene Cloning, Expression and Activity Analysis of Manganese Superoxide Dismutase from Two Strains of Gracilaria lemaneiformis (Gracilariaceae, Rhodophyta) under Heat Stress
title_fullStr Gene Cloning, Expression and Activity Analysis of Manganese Superoxide Dismutase from Two Strains of Gracilaria lemaneiformis (Gracilariaceae, Rhodophyta) under Heat Stress
title_full_unstemmed Gene Cloning, Expression and Activity Analysis of Manganese Superoxide Dismutase from Two Strains of Gracilaria lemaneiformis (Gracilariaceae, Rhodophyta) under Heat Stress
title_short Gene Cloning, Expression and Activity Analysis of Manganese Superoxide Dismutase from Two Strains of Gracilaria lemaneiformis (Gracilariaceae, Rhodophyta) under Heat Stress
title_sort gene cloning, expression and activity analysis of manganese superoxide dismutase from two strains of gracilaria lemaneiformis (gracilariaceae, rhodophyta) under heat stress
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6268981/
https://www.ncbi.nlm.nih.gov/pubmed/22508332
http://dx.doi.org/10.3390/molecules17044522
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