Abstract
MicroRNAs (miRNAs) are a newly discovered class of noncoding small RNAs that regulate gene expression by directing target mRNA cleavage or translational inhibition. A large number of miRNAs have been identified in plants. Increasing evidence has shown that miRNAs play multiple roles in plant biological processes. So far, identification of miRNAs has been limited to a few model plant species, whose genomes have been sequenced. Wheat (Triticum aestivum L.) is one of the most important cereal crops worldwide. To date, only a few conserved miRNAs have been predicted in wheat. Here, we showed the conserved miRNAs identified in wheat by expressed sequence tag (EST) analysis. All previously known miRNAs from Arabidopsis, rice, and other plant species were used in a BLAST search against the wheat EST database to identify novel wheat miRNAs by a series of filtering criteria. By this strategy, we identified 62 conserved miRNAs, belonging to 30 miRNA families, 48 of which were newly discovered in wheat. These newly identified wheat miRNAs may regulate 287 potential targets, which are involved in development, signal transduction, metabolic pathways, disease resistance, ion transportation, and environmental stress response.
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Claims 5
Claim · model-written summary
EST analysis identified 62 conserved wheat miRNAs in 30 families.
- Taxon
- wheat
Triticum aestivumt0 - Outcome
- conserved miRNAse0
- Value
- 62e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“we identified 62 conserved miRNAs, belonging to 30 miRNA families”
t0“wheat”
Claim · model-written summary
The identified miRNAs belonged to 30 families.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- miRNA familiese0
- Value
- 30 miRNA familiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“62 conserved miRNAs, belonging to 30 miRNA families”
t0“wheat”
Claim · model-written summary
Forty-eight of the miRNAs were newly discovered in wheat.
- Taxon
- wheatTriticum aestivume0
- Outcome
- newly discovered in wheate0
- Value
- 48e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“48 of which were newly discovered in wheat”
Claim · model-written summary
The newly identified wheat miRNAs may regulate 287 potential targets.
- Taxon
- wheatTriticum aestivume0
- Gene
- wheat miRNAse0
- Outcome
- potential targetse0
- Value
- 287e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These newly identified wheat miRNAs may regulate 287 potential targets”
Claim · model-written summary
Potential targets were linked to development, signaling, metabolism, disease resistance, ion transport and stress responses.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- development, signal transduction, metabolic pathways, disease resistance, ion transportation, and environmental stress responsee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potential targets, which are involved in development, signal transduction, metabolic pathways, disease resistance, ion transportation, and environmental stress response”
t0“wheat”