Low Temperature Antioxidant Activity QTL Associate with Genomic Regions Involved in Physiological Cold Stress Tolerance Responses in Rice (<i>Oryza sativa</i> L.)

Boosting cold stress tolerance in crop plants can minimize stress-mediated yield losses. Asian rice (<i>Oryza sativa</i> L.), one of the most consumed cereal crops, originated from subtropical regions and is generally sensitive to low temperature environments. Within the two subspecies o...

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Autores principales:	Huy Phan, Michael Schläppi
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	anthocyanins antioxidant activity catalase chilling stress GWAS membrane integrity Genetics QH426-470
Acceso en línea:	https://doaj.org/article/2f33dd32615b4a808a55ba8a532926cc
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spelling	oai:doaj.org-article:2f33dd32615b4a808a55ba8a532926cc2021-11-25T17:40:57ZLow Temperature Antioxidant Activity QTL Associate with Genomic Regions Involved in Physiological Cold Stress Tolerance Responses in Rice (<i>Oryza sativa</i> L.)10.3390/genes121117002073-4425https://doaj.org/article/2f33dd32615b4a808a55ba8a532926cc2021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4425/12/11/1700https://doaj.org/toc/2073-4425Boosting cold stress tolerance in crop plants can minimize stress-mediated yield losses. Asian rice (<i>Oryza sativa</i> L.), one of the most consumed cereal crops, originated from subtropical regions and is generally sensitive to low temperature environments. Within the two subspecies of rice, <i>JAPONICA</i>, and <i>INDICA</i>, the cold tolerance potential of its accessions is highly variable and depends on their genetic background. Yet, cold stress tolerance response mechanisms are complex and not well understood. This study utilized 370 accessions from the Rice Diversity Panel 1 (RDP1) to investigate and correlate four cold stress tolerance response phenotypes: membrane damage, seedling survivability, and catalase and anthocyanin antioxidative activity. Most <i>JAPONICA</i> accessions, and admixed accessions within <i>JAPONICA</i>, had lower membrane damage, higher antioxidative activity, and overall, higher seedling survivability compared to <i>INDICA</i> accessions. Genome-wide association study (GWAS) mapping was done using the four traits to find novel quantitative trait loci (QTL), and to validate and fine-map previously identified QTL. A total of 20 QTL associated to two or more traits were uncovered by our study. Gene Ontology (GO) term enrichment analyses satisfying four layers of filtering retrieved three potential pathways: signal transduction, maintenance of plasma membrane and cell wall integrity, and nucleic acids metabolism as general mechanisms of cold stress tolerance responses involving antioxidant activity.Huy PhanMichael SchläppiMDPI AGarticleanthocyaninsantioxidant activitycatalasechilling stressGWASmembrane integrityGeneticsQH426-470ENGenes, Vol 12, Iss 1700, p 1700 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	anthocyanins antioxidant activity catalase chilling stress GWAS membrane integrity Genetics QH426-470
spellingShingle	anthocyanins antioxidant activity catalase chilling stress GWAS membrane integrity Genetics QH426-470 Huy Phan Michael Schläppi Low Temperature Antioxidant Activity QTL Associate with Genomic Regions Involved in Physiological Cold Stress Tolerance Responses in Rice (<i>Oryza sativa</i> L.)
description	Boosting cold stress tolerance in crop plants can minimize stress-mediated yield losses. Asian rice (<i>Oryza sativa</i> L.), one of the most consumed cereal crops, originated from subtropical regions and is generally sensitive to low temperature environments. Within the two subspecies of rice, <i>JAPONICA</i>, and <i>INDICA</i>, the cold tolerance potential of its accessions is highly variable and depends on their genetic background. Yet, cold stress tolerance response mechanisms are complex and not well understood. This study utilized 370 accessions from the Rice Diversity Panel 1 (RDP1) to investigate and correlate four cold stress tolerance response phenotypes: membrane damage, seedling survivability, and catalase and anthocyanin antioxidative activity. Most <i>JAPONICA</i> accessions, and admixed accessions within <i>JAPONICA</i>, had lower membrane damage, higher antioxidative activity, and overall, higher seedling survivability compared to <i>INDICA</i> accessions. Genome-wide association study (GWAS) mapping was done using the four traits to find novel quantitative trait loci (QTL), and to validate and fine-map previously identified QTL. A total of 20 QTL associated to two or more traits were uncovered by our study. Gene Ontology (GO) term enrichment analyses satisfying four layers of filtering retrieved three potential pathways: signal transduction, maintenance of plasma membrane and cell wall integrity, and nucleic acids metabolism as general mechanisms of cold stress tolerance responses involving antioxidant activity.
format	article
author	Huy Phan Michael Schläppi
author_facet	Huy Phan Michael Schläppi
author_sort	Huy Phan
title	Low Temperature Antioxidant Activity QTL Associate with Genomic Regions Involved in Physiological Cold Stress Tolerance Responses in Rice (<i>Oryza sativa</i> L.)
title_short	Low Temperature Antioxidant Activity QTL Associate with Genomic Regions Involved in Physiological Cold Stress Tolerance Responses in Rice (<i>Oryza sativa</i> L.)
title_full	Low Temperature Antioxidant Activity QTL Associate with Genomic Regions Involved in Physiological Cold Stress Tolerance Responses in Rice (<i>Oryza sativa</i> L.)
title_fullStr	Low Temperature Antioxidant Activity QTL Associate with Genomic Regions Involved in Physiological Cold Stress Tolerance Responses in Rice (<i>Oryza sativa</i> L.)
title_full_unstemmed	Low Temperature Antioxidant Activity QTL Associate with Genomic Regions Involved in Physiological Cold Stress Tolerance Responses in Rice (<i>Oryza sativa</i> L.)
title_sort	low temperature antioxidant activity qtl associate with genomic regions involved in physiological cold stress tolerance responses in rice (<i>oryza sativa</i> l.)
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2f33dd32615b4a808a55ba8a532926cc
work_keys_str_mv	AT huyphan lowtemperatureantioxidantactivityqtlassociatewithgenomicregionsinvolvedinphysiologicalcoldstresstoleranceresponsesinriceioryzasativail AT michaelschlappi lowtemperatureantioxidantactivityqtlassociatewithgenomicregionsinvolvedinphysiologicalcoldstresstoleranceresponsesinriceioryzasativail
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Low Temperature Antioxidant Activity QTL Associate with Genomic Regions Involved in Physiological Cold Stress Tolerance Responses in Rice (<i>Oryza sativa</i> L.)

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