Abstract:
:Pentatricopeptide repeat (PPR) proteins, composing one of the largest protein families in plants, are involved in RNA binding and regulation of organelle RNA metabolism at the post-transcriptional level. Although several PPR proteins have been implicated in endosperm development in rice (Oryza sativa), the molecular functions of many PPRs remain obscure. Here, we identified a rice endosperm mutant named floury endosperm 18 (flo18) with pleiotropic defects in both reproductive and vegetative development. Map-based cloning and complementation tests showed that FLO18 encodes a mitochondrion-targeted P-type PPR protein with 15 PPR motifs. Mitochondrial function was disrupted in the flo18 mutant, as evidenced by decreased assembly of Complex I in the mitochondrial electron transport chain and altered mitochondrial morphology. Loss of FLO18 function resulted in defective 5'-end processing of mitochondrial nad5 transcripts encoding subunit 5 of NADH dehydrogenase. These results suggested that FLO18 is involved in 5'-end processing of nad5 mRNA and plays an important role in mitochondrial function and endosperm development. This article is protected by copyright. All rights reserved.
journal_name
J Integr Plant Bioljournal_title
Journal of integrative plant biologyauthors
Yu M,Wu M,Ren Y,Wang Y,Li J,Lei C,Sun Y,Bao X,Wu H,Yang H,Pan T,Wang Y,Jing R,Yan M,Zhang H,Zhao L,Zhao Z,Zhang X,Guo X,Cheng Z,Yang B,Jiang L,Wan Jdoi
10.1111/jipb.13049subject
Has Abstractpub_date
2020-12-07 00:00:00eissn
1672-9072issn
1744-7909pub_type
杂志文章abstract::The thermosensitive genic male sterile 5 (tms5) mutation causes thermosensitive genic male sterility in rice (Oryza sativa) through loss of RNase ZS1 function, which influences ubiquitin fusion ribosomal protein L40 (UbL40 ) messenger RNA levels during male development. Here, we used ATAC-seq, combined with analysis o...
journal_title:Journal of integrative plant biology
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journal_title:Journal of integrative plant biology
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journal_title:Journal of integrative plant biology
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