Mechanism for the genomic and functional evolution of the MIR2118 family in the grass lineage

© 2021 The Authors. New Phytologist © 2021 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 233(2022), 4 vom: 27. Feb., Seite 1915-1930
1. Verfasser: Lan, Ting (VerfasserIn)
Weitere Verfasser: Yang, Xiaoyu, Chen, Jiwei, Tian, Peng, Shi, Lina, Yu, Yu, Liu, Lin, Gao, Lei, Mo, Beixin, Chen, Xuemei, Tang, Guiliang
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't MIR1859 Oryza sativa MIR2118 cluster evolution grass lineage reproductive development and fertility MicroRNAs RNA, Plant RNA, Small Interfering
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520 |a The MIR2118 family has undergone tremendous expansion in the grass lineage, in which the miRNA targets numerous noncoding PHAS loci to produce 21-nt phased small interfering RNAs (phasiRNAs) involved in male fertility. However, the evolutionary trajectory of the grass MIR2118 genes and the functions of phasiRNAs have not yet been fully elucidated. We conducted comparative genomic, molecular evolution, expression and parallel analysis of RNA ends (PARE) analyses of MIR2118 and the miR2118-mediated regulatory pathway in grasses, focusing on Oryza sativa. In total, 617 MIR2118 and eight MIR1859 novel members were identified. Phylogenetic analyses showed that grass MIR2118 genes form a distinct clade from the MIR482/2118 genes of nongrass species. We reconstructed hypothetical evolutionary histories of the grass MIR2118 clusters and its MIR1859 variants, and examined the polycistronic composition and the differential expression of the osa-MIR2118 clusters. PARE data showed that osa-miR2118 might also direct the cleavage of some protein-coding gene transcripts. Importantly, we found that PARE analysis is inherently prone to false-positive target predictions when a large number of small RNAs, such as phasiRNAs, are analysed. Our results revealed the evolution and diversification of the MIR2118 family, and provide new insights into the functions of phasiRNAs in the grasses 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a MIR1859 
650 4 |a Oryza sativa 
650 4 |a MIR2118 cluster 
650 4 |a evolution 
650 4 |a grass lineage 
650 4 |a reproductive development and fertility 
650 7 |a MicroRNAs  |2 NLM 
650 7 |a RNA, Plant  |2 NLM 
650 7 |a RNA, Small Interfering  |2 NLM 
700 1 |a Yang, Xiaoyu  |e verfasserin  |4 aut 
700 1 |a Chen, Jiwei  |e verfasserin  |4 aut 
700 1 |a Tian, Peng  |e verfasserin  |4 aut 
700 1 |a Shi, Lina  |e verfasserin  |4 aut 
700 1 |a Yu, Yu  |e verfasserin  |4 aut 
700 1 |a Liu, Lin  |e verfasserin  |4 aut 
700 1 |a Gao, Lei  |e verfasserin  |4 aut 
700 1 |a Mo, Beixin  |e verfasserin  |4 aut 
700 1 |a Chen, Xuemei  |e verfasserin  |4 aut 
700 1 |a Tang, Guiliang  |e verfasserin  |4 aut 
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773 1 8 |g volume:233  |g year:2022  |g number:4  |g day:27  |g month:02  |g pages:1915-1930 
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