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Plant Leaves: Pinellia pedatisecta vs Pinellia ternata

ABSTRACT: miRNA expression profiling of Pinellia pedatisecta leaves comparing Pinellia ternata leaves in the same condition. Then we compared the accumulation of known miRNA families using microarray signals to identify further the differential miRNA expression between Pinellia pedatisecta and Pinellia ternata.

ORGANISM(S): Pinellia pedatisecta Pinellia ternata

PROVIDER: GSE48322 | GEO | 2013/12/31

SECONDARY ACCESSION(S): PRJNA209718

REPOSITORIES: GEO

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Plant Leaves: Pinellia pedatisecta vs Pinellia ternata

Project description:miRNA expression profiling of Pinellia pedatisecta leaves comparing Pinellia ternata leaves in the same condition. Then we compared the accumulation of known miRNA families using microarray signals to identify further the differential miRNA expression between Pinellia pedatisecta and Pinellia ternata. Pinellia pedatisecta vs Pinellia ternata, independently grown and harvested. Each sample are mixed. One replicate per array.

2013-12-31 | E-GEOD-48322 | biostudies-arrayexpress

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Project description:MicroRNAs (miRNAs) are part of gene regulatory networks that direct all most all biological processes in plants including their growth and development, as well as adaptation to biotic and abiotic stresses. Sorghum is largely grown for its grain production, but recently it also emerged a major feedstock for biofuel production. Interestingly, Sorghum is relatively drought tolerant crop and largely grown in semi-arid tropical and sub-tropical regions where the drought or high temperature or their combination co-occur in the field. Although miRNA profiles have been reported in Sorghum leaves exposed to drought, but thus far miRNAs in heat- or drought and heat-exposed conditions have not been reported. In this study, we report miRNA profiles in Sorghum leaves exposed to drought or heat or their combination. The bioinformatic analysis of small RNA libraries revealed the expression of approximately 30 conserved miRNA families represented by 81 individual miRNAs as well as 11 novel miRNA families in Sorghum leaves. Of these, 26 miRNAs were found to be differentially regulated in response to one or more of the stress treatments. Overall, the number of miRNAs regulated by heat was more than the drought. Furthermore, miRNA profiles revealed more similarities between heat and the combination of drought and heat stresses. We also have analyzed degradome profiles in control and drought-exposed plants to identify potential targets for the miRNAs. This study provides a frame work for better understanding of miRNA-guided gene regulations that vary between individual drought or heat or combination of drought and heat treatments.

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