Abstract:
:Perennial ryegrass (Lolium perenne L.) is widely used for forage production in both permanent and temporary grassland systems. To increase yields in perennial ryegrass, recent breeding efforts have been focused on strategies to more efficiently exploit heterosis by hybrid breeding. Cytoplasmic male sterility (CMS) is a widely applied mechanism to control pollination for commercial hybrid seed production and although CMS systems have been identified in perennial ryegrass, they are yet to be fully characterized. Here, we present a bioinformatics pipeline for efficient identification of candidate restorer of fertility (Rf) genes for CMS. From a high-quality draft of the perennial ryegrass genome, 373 pentatricopeptide repeat (PPR) genes were identified and classified, further identifying 25 restorer of fertility-like PPR (RFL) genes through a combination of DNA sequence clustering and comparison to known Rf genes. This extensive gene family was targeted as the majority of Rf genes in higher plants are RFL genes. These RFL genes were further investigated by phylogenetic analyses, identifying three groups of perennial ryegrass RFLs. These three groups likely represent genomic regions of active RFL generation and identify the probable location of perennial ryegrass PPR-Rf genes. This pipeline allows for the identification of candidate PPR-Rf genes from genomic sequence data and can be used in any plant species. Functional markers for PPR-Rf genes will facilitate map-based cloning of Rf genes and enable the use of CMS as an efficient tool to control pollination for hybrid crop production.
journal_name
Genome Biol Evoljournal_title
Genome biology and evolutionauthors
Sykes T,Yates S,Nagy I,Asp T,Small I,Studer Bdoi
10.1093/gbe/evw047subject
Has Abstractpub_date
2017-02-01 00:00:00pages
351-362issue
2issn
1759-6653pii
evw047journal_volume
9pub_type
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journal_title:Genome biology and evolution
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更新日期:2009-08-13 00:00:00
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journal_title:Genome biology and evolution
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journal_title:Genome biology and evolution
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journal_title:Genome biology and evolution
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journal_title:Genome biology and evolution
pub_type: 杂志文章
doi:10.1093/gbe/evq027
更新日期:2010-07-12 00:00:00
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journal_title:Genome biology and evolution
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journal_title:Genome biology and evolution
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journal_title:Genome biology and evolution
pub_type: 杂志文章
doi:10.1093/gbe/evx140
更新日期:2017-07-01 00:00:00
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journal_title:Genome biology and evolution
pub_type: 杂志文章
doi:10.1093/gbe/evz059
更新日期:2019-06-01 00:00:00
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journal_title:Genome biology and evolution
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更新日期:2016-02-23 00:00:00
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journal_title:Genome biology and evolution
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更新日期:2012-01-01 00:00:00
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journal_title:Genome biology and evolution
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journal_title:Genome biology and evolution
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abstract::Discoba (Excavata) is an evolutionarily important group of eukaryotes that includes Jakobida, with the most bacterial-like mitochondrial genomes known, and Euglenozoa, many of which have extensively fragmented mitochondrial genomes. However, little is known about the mitochondrial genomes of Heterolobosea, the third m...
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journal_title:Genome biology and evolution
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abstract::Evolution of prokaryotes involves extensive loss and gain of genes, which lead to substantial differences in the gene repertoires even among closely related organisms. Through a wide range of phylogenetic depths, gene frequency distributions in prokaryotic pangenomes bear a characteristic, asymmetrical U-shape, with a...
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pub_type: 杂志文章
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