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Insights into the small RNA-mediated networks in response to abiotic stress in plants

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Title Insights into the small RNA-mediated networks in response to abiotic stress in plants
 
Creator Balyan, Sonia C.
Mutum, Roseeta D.
Kansal, Shivani
Kumar, Santosh
Mathur, Saloni
Raghuvanshi, Saurabh
 
Subject Abiotic stress
Drought
Heat
Cold
UV
Nutrient starvation
Salt
miRNA
Small RNA
DNA methylation
Epigenetic
Nutrient starvation
 
Description Under natural conditions, plants are constantly exposed to various environmental stresses such as drought, extreme temperature, salt, UV, mechanical, or nutrient starvation. To cope with these adverse conditions, plants have evolved cascade of molecular networks to perceive and transduce the stress signals, resulting into the reprogramming of gene expression. The stress-regulated reprogramming of gene expression at post-transcriptional regulation has been emphasized with the discovery of small regulatory RNAs. Plant small RNAs represent non-coding RNAs in the size range of 20–24 nucleotides and categorized into hairpin RNAs (hpRNAs) and siRNAs. The first category includes miRNAs, lmiRNAs, and nat-miRNAs while the siRNA group includes hc-siRNA, secondary siRNAs and nat-siRNAs. Studies have shown that small RNAs, especially miRNAs, are dynamically regulated by a variety of abiotic stress conditions. Such sRNAs target a variety of downstream targets including regulatory proteins as well as metabolic enzymes and thus play pivotal role in the regulation of plant abiotic stress response. Stress appears to regulate miRNA biogenesis as well as its activity. Several miRNA gene:target pairs respond to multiple stress conditions and are conserved in various plant species indicating that miRNAs may define pivotal regulatory nodes involved in the regulation of the plant stress response. On the other hand, miRNAs also show variety-/cultivar-specific stress response indicating that they themselves are under a very dynamic regulation. The world of small RNAs is gradually unfolding and much remains to be explored, nevertheless, it has been conclusively demonstrated that small RNAs define a new dimension in the molecular regulatory network regulating the plant stress response.
 
Date 2016-01-01T10:00:04Z
2016-01-01T10:00:04Z
2015
 
Type Book chapter
 
Identifier In: Pandey GK (ed), Elucidation of Abiotic Stress Signaling in Plants: Functional Genomics Perspectives. Springer Science, New York, USA, pp 45-91
978-1-4939-2540-7
http://172.16.0.77:8080/jspui/handle/123456789/489
http://link.springer.com/chapter/10.1007%2F978-1-4939-2540-7_3
10.1007/978-1-4939-2540-7_3
 
Language en_US
 
Publisher Springer