ArticleFrontiers in plant science2026
Integrated analysis of organelle RNA editing and DYW- type PPR genes identifies a candidate regulator of plastid
Article in Frontiers in plant science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
RNA editing in plant organelles is an important post-transcriptional process that helps maintain organelle gene function and may contribute to plant responses to environmental stress. However, drought-responsive RNA editing events and their regulatory factors remain poorly understood in soybean. Pentatricopeptide repeat (PPR) proteins, especially DYW-type PPR proteins, are key components of plant organellar RNA editing complexes and often determine the recognition of specific editing sites. In this study, we analyzed plastid and mitochondrial RNA editing in the soybean cultivar Dongfudou 3 under natural dehydration stress and investigated DYW-type PPR genes as potential regulators. A total of 60 plastid and 684 mitochondrial RNA editing sites were identified, most of which were located in coding regions and caused nonsynonymous C-to-U changes. Under drought stress, 19 plastid and 71 mitochondrial coding-region sites showed marked changes in editing efficiency, suggesting dynamic regulation of organellar RNA editing by water deficit. Genome-wide analysis identified 822 high-confidence soybean PPR genes, and DYW-type members were further screened using drought-responsive transcriptome data and predicted editing targets. Gm_DFD3_00451 was selected as a candidate regulator because it showed drought-responsive expression, was associated with the plastid
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