RNAseq revealed the important gene pathways controlling adaptive mechanisms under waterlogged stress in maize

Abstract Waterlogging causes yield penalty in maize-growing countries of subtropical regions. Transcriptome analysis of the roots of a tolerant inbred HKI1105 using RNA sequencing revealed 21,364 differentially expressed genes (DEGs) under waterlogged stress condition. These 21,364 DEGs are known to...

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Autores principales: Kanika Arora, Kusuma Kumari Panda, Shikha Mittal, Mallana Gowdra Mallikarjuna, Atmakuri Ramakrishna Rao, Prasanta Kumar Dash, Nepolean Thirunavukkarasu
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Publicado: Nature Portfolio 2017
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Acceso en línea:https://doaj.org/article/19f67c3fe78f43558516bd6ec788be85
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spelling oai:doaj.org-article:19f67c3fe78f43558516bd6ec788be852021-12-02T15:05:40ZRNAseq revealed the important gene pathways controlling adaptive mechanisms under waterlogged stress in maize10.1038/s41598-017-10561-12045-2322https://doaj.org/article/19f67c3fe78f43558516bd6ec788be852017-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-10561-1https://doaj.org/toc/2045-2322Abstract Waterlogging causes yield penalty in maize-growing countries of subtropical regions. Transcriptome analysis of the roots of a tolerant inbred HKI1105 using RNA sequencing revealed 21,364 differentially expressed genes (DEGs) under waterlogged stress condition. These 21,364 DEGs are known to regulate important pathways including energy-production, programmed cell death (PCD), aerenchyma formation, and ethylene responsiveness. High up-regulation of invertase (49-fold) and hexokinase (36-fold) in roots explained the ATP requirement in waterlogging condition. Also, high up-regulation of expansins (42-fold), plant aspartic protease A3 (19-fold), polygalacturonases (16-fold), respiratory burst oxidase homolog (12-fold), and hydrolases (11-fold) explained the PCD of root cortical cells followed by the formation of aerenchyma tissue during waterlogging stress. We hypothesized that the oxygen transfer in waterlogged roots is promoted by a cross-talk of fermentative, metabolic, and glycolytic pathways that generate ATPs for PCD and aerenchyma formation in root cortical cells. SNPs were mapped to the DEGs regulating aerenchyma formation (12), ethylene-responsive factors (11), and glycolysis (4) under stress. RNAseq derived SNPs can be used in selection approaches to breed tolerant hybrids. Overall, this investigation provided significant evidence of genes operating in the adaptive traits such as ethylene production and aerenchyma formation to cope-up the waterlogging stress.Kanika AroraKusuma Kumari PandaShikha MittalMallana Gowdra MallikarjunaAtmakuri Ramakrishna RaoPrasanta Kumar DashNepolean ThirunavukkarasuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Kanika Arora
Kusuma Kumari Panda
Shikha Mittal
Mallana Gowdra Mallikarjuna
Atmakuri Ramakrishna Rao
Prasanta Kumar Dash
Nepolean Thirunavukkarasu
RNAseq revealed the important gene pathways controlling adaptive mechanisms under waterlogged stress in maize
description Abstract Waterlogging causes yield penalty in maize-growing countries of subtropical regions. Transcriptome analysis of the roots of a tolerant inbred HKI1105 using RNA sequencing revealed 21,364 differentially expressed genes (DEGs) under waterlogged stress condition. These 21,364 DEGs are known to regulate important pathways including energy-production, programmed cell death (PCD), aerenchyma formation, and ethylene responsiveness. High up-regulation of invertase (49-fold) and hexokinase (36-fold) in roots explained the ATP requirement in waterlogging condition. Also, high up-regulation of expansins (42-fold), plant aspartic protease A3 (19-fold), polygalacturonases (16-fold), respiratory burst oxidase homolog (12-fold), and hydrolases (11-fold) explained the PCD of root cortical cells followed by the formation of aerenchyma tissue during waterlogging stress. We hypothesized that the oxygen transfer in waterlogged roots is promoted by a cross-talk of fermentative, metabolic, and glycolytic pathways that generate ATPs for PCD and aerenchyma formation in root cortical cells. SNPs were mapped to the DEGs regulating aerenchyma formation (12), ethylene-responsive factors (11), and glycolysis (4) under stress. RNAseq derived SNPs can be used in selection approaches to breed tolerant hybrids. Overall, this investigation provided significant evidence of genes operating in the adaptive traits such as ethylene production and aerenchyma formation to cope-up the waterlogging stress.
format article
author Kanika Arora
Kusuma Kumari Panda
Shikha Mittal
Mallana Gowdra Mallikarjuna
Atmakuri Ramakrishna Rao
Prasanta Kumar Dash
Nepolean Thirunavukkarasu
author_facet Kanika Arora
Kusuma Kumari Panda
Shikha Mittal
Mallana Gowdra Mallikarjuna
Atmakuri Ramakrishna Rao
Prasanta Kumar Dash
Nepolean Thirunavukkarasu
author_sort Kanika Arora
title RNAseq revealed the important gene pathways controlling adaptive mechanisms under waterlogged stress in maize
title_short RNAseq revealed the important gene pathways controlling adaptive mechanisms under waterlogged stress in maize
title_full RNAseq revealed the important gene pathways controlling adaptive mechanisms under waterlogged stress in maize
title_fullStr RNAseq revealed the important gene pathways controlling adaptive mechanisms under waterlogged stress in maize
title_full_unstemmed RNAseq revealed the important gene pathways controlling adaptive mechanisms under waterlogged stress in maize
title_sort rnaseq revealed the important gene pathways controlling adaptive mechanisms under waterlogged stress in maize
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/19f67c3fe78f43558516bd6ec788be85
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