Genome wide analysis of heat responsive microRNAs in banana during acquired thermo tolerance

MicroRNAs are a class of small regulatory RNAs in plants, which play vital roles during various abiotic and abiotic stress conditions including plant processes. In this present study, we examined the expression of miRNAs and their predicted target expression levels during heat stress in banana. Out...

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Main Authors: S M Vidya, K V Ravishankar, R H Laxman
Format: Article
Language:English
Published: Society for Promotion of Horticulture - Indian Institute of Horticultural Research 2018-06-01
Series:Journal of Horticultural Sciences
Subjects:
Online Access:https://jhs.iihr.res.in/index.php/jhs/article/view/35
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author S M Vidya
K V Ravishankar
R H Laxman
author_facet S M Vidya
K V Ravishankar
R H Laxman
author_sort S M Vidya
collection DOAJ
description MicroRNAs are a class of small regulatory RNAs in plants, which play vital roles during various abiotic and abiotic stress conditions including plant processes. In this present study, we examined the expression of miRNAs and their predicted target expression levels during heat stress in banana. Out of 235 miRNA found in Musa, 40 miRNA showed homology to heat responsive miRNAs from other plants. Further, 14 targets for miRNA were predicted that are potentially regulated by their cognate miRNAs and were monitored under three stages of stress viz, induction, induction + lethal alone using qPCR analysis. The results suggest that generally, there is a negative relationship in the expression patterns of miRNA and their predicted cognate targets - HSP70, HSP90, SAP, DNAj genes. These were highly up regulated and their respective miRNAs showed lower expression. This is the first report in banana, which demonstrated that during induction stress, various thermo-protective genes are activated at initial stages of stress to achieve thermotolerance through altered miRNA expression. The results will help in broadening our understanding acquired thermotolerance and their regulation by miRNAs in plants.
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spelling doaj.art-f7a54375c0324229b6d98a14d8d809762023-08-20T13:59:22ZengSociety for Promotion of Horticulture - Indian Institute of Horticultural ResearchJournal of Horticultural Sciences0973-354X2582-48992018-06-0113110.24154/jhs.v13i1.3529Genome wide analysis of heat responsive microRNAs in banana during acquired thermo toleranceS M VidyaK V RavishankarR H Laxman MicroRNAs are a class of small regulatory RNAs in plants, which play vital roles during various abiotic and abiotic stress conditions including plant processes. In this present study, we examined the expression of miRNAs and their predicted target expression levels during heat stress in banana. Out of 235 miRNA found in Musa, 40 miRNA showed homology to heat responsive miRNAs from other plants. Further, 14 targets for miRNA were predicted that are potentially regulated by their cognate miRNAs and were monitored under three stages of stress viz, induction, induction + lethal alone using qPCR analysis. The results suggest that generally, there is a negative relationship in the expression patterns of miRNA and their predicted cognate targets - HSP70, HSP90, SAP, DNAj genes. These were highly up regulated and their respective miRNAs showed lower expression. This is the first report in banana, which demonstrated that during induction stress, various thermo-protective genes are activated at initial stages of stress to achieve thermotolerance through altered miRNA expression. The results will help in broadening our understanding acquired thermotolerance and their regulation by miRNAs in plants. https://jhs.iihr.res.in/index.php/jhs/article/view/35Acquired thermo tolerance, banana, heat stress, miRNA,thermo protective genes.
spellingShingle S M Vidya
K V Ravishankar
R H Laxman
Genome wide analysis of heat responsive microRNAs in banana during acquired thermo tolerance
Journal of Horticultural Sciences
Acquired thermo tolerance, banana, heat stress, miRNA,thermo protective genes.
title Genome wide analysis of heat responsive microRNAs in banana during acquired thermo tolerance
title_full Genome wide analysis of heat responsive microRNAs in banana during acquired thermo tolerance
title_fullStr Genome wide analysis of heat responsive microRNAs in banana during acquired thermo tolerance
title_full_unstemmed Genome wide analysis of heat responsive microRNAs in banana during acquired thermo tolerance
title_short Genome wide analysis of heat responsive microRNAs in banana during acquired thermo tolerance
title_sort genome wide analysis of heat responsive micrornas in banana during acquired thermo tolerance
topic Acquired thermo tolerance, banana, heat stress, miRNA,thermo protective genes.
url https://jhs.iihr.res.in/index.php/jhs/article/view/35
work_keys_str_mv AT smvidya genomewideanalysisofheatresponsivemicrornasinbananaduringacquiredthermotolerance
AT kvravishankar genomewideanalysisofheatresponsivemicrornasinbananaduringacquiredthermotolerance
AT rhlaxman genomewideanalysisofheatresponsivemicrornasinbananaduringacquiredthermotolerance