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

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Title Genome wide analysis of heat responsive microRNAs in banana during acquired thermo tolerance
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Creator SM Vidya, RH Laxman, KV Ravishankar
 
Subject Acquired thermo tolerance, banana, heat stress, miRNA,thermo protective genes
 
Description Not Available
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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Date 2019-10-19T09:31:11Z
2019-10-19T09:31:11Z
2019-03-06
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/23654
 
Language English
 
Relation Not Available;
 
Publisher Society for Promotion of Horticulture