ArticlePlant methods2020
A new method for functional analysis of plastid EMBRYO-DEFECTIVE PPR genes by efficiently constructing cosuppression lines in Arabidopsis.
Article in Plant methods, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 9 citations in OpenAlex.
- Updated Progress on Group II Intron Splicing Factors in Plant Chloroplasts.Current issues in molecular biology · 2022Review
- An overview of RNA splicing and functioning of splicing factors in land plant chloroplasts.RNA biology · 2022Article
- A genetic screen in Arabidopsis reveals the identical roles for RBP45d and PRP39a in 5' cryptic splice site selection.Frontiers in plant science · 2022Article
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4 authors at 1 institution in 1 country.
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Abstract
backgroundPentatricopeptide-repeat proteins (PPRs) characterized by tandem arrays of a degenerate 35-amino-acid repeat (PPR motif) can bind a single strand RNA and regulate organelle gene expression at the post-transcriptional level, including RNA cleavage, splicing, editing and stability etc. PPRs are conserved in all eukaryotes and extremely expanded in higher plants. Many knockout mutants of PPR genes are embryonically lethal. These genes are named EMB PPRs and functional analysis of them is hindered by the difficulty in obtaining their knockout mutants.
resultsHere, we report a new method for functional analysis of plastid EMB PPRs by efficiently constructing their cosuppression lines in Arabidopsis. When we overexpressed a mutated full length or truncated coding sequence (CDS) of EMB PPRs, such as EMB2279, EMB2654 and EMB976 (all belong to the P family PPRs) in the wild-type (WT) background, a large portion of T
conclusionsOverexpression of an appropriately truncated EMB PPR CDS in WT leads to gene silencing in a RDR6-dependent manner, and this method can be employed to study the unknown function of EMB PPR genes. By this method, we showed that EMB976 is required for splicing of chloroplast clpP1 intron 2 and ycf3 intron 1.
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