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Deep sequencing of small RNAs reveals ribosomal origin of microRNAs in Oryza sativa and their regulatory role in high temperature

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Title Deep sequencing of small RNAs reveals ribosomal origin of microRNAs in Oryza sativa and their regulatory role in high temperature
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Creator Satendra K. Mangrauthia, B. Sailaja, Madhu Pusuluri, Biswajit Jena, Vishnu V. Prasanth, Surekha Agarwal, P. Senguttuvel, N. Sarla, V. Ravindra Babu, Desiraju Subrahmanyam, S.R. Voleti
 
Subject Rice Novel microRNAs Ribosomal DNA Rice chromosome 9 Gene expression High temperature stress
 
Description Not Available
MicroRNAs are small noncoding regulatory RNAs which control gene expression by mRNA degradation or
translational repression. They are significant molecular players regulating important biological processes such as
developmental timing and stress response. We report here the discovery of miRNAs derived from ribosomal DNA
using the small RNA datasets of 16 deep sequencing libraries of rice. Twelve putative miRNAs were identified
based on highly stringent criteria of novel miRNA prediction. Surprisingly, 10 putative miRNAs (mi_7403,
mi_8435, mi_12675, mi_4266, mi_4758, mi_4218, mi_8200, mi_4644, mi_14291, mi_16235) originated from
rDNA of rice chromosome 9. Expression analysis of putative miRNAs and their target genes in heat tolerant and
susceptible rice cultivars in control and high temperature treated seedlings revealed differential regulation of
rDNA derived miRNAs. This is the first report of rDNA derived miRNAs in rice which indicates their role in gene
regulation during high temperature stress in plants. Further studies in this area will open new research challenges
and opportunities to broaden our knowledge on gene regulation mechanisms.
Not Available
 
Date 2018-12-13T06:24:12Z
2018-12-13T06:24:12Z
2018-05-03
 
Type Journal
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/15889
 
Language English
 
Relation Not Available;
 
Publisher E