A role for MIR828 in pineapple fruit development

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Chen et al.<sup> </sup>(<i>Nature Genet.</i> 51: 1549–1558; Oct. 2019) sequenced <i>Ananas comosus</i> var<i>. bracteatus</i> accession CB5, cultivated for its bright pink-to-red colored fruit, and yellow-fleshed <i>A. comosus</i> accession F153, reporting an improved F153 reference assembly while annotating <i>MICORNA</i> (<i>MIRNA</i>) lociand gene family expressions relevant to lignin and anthocyanin biosynthesis. An independent article (Xiong et al. <i>Sci. Rep</i>. 8: 1947; 2018) reported var. <i> bracteatus</i><br><i>MIRNA</i>s but not <i>MIR828</i>, a negative regulator of anthocyanin and polyphenolics biosynthesis by targeting <i>MYB</i> transcription factors associated with UV light- and sugar-signaling in dicots. <i>MIR828</i> has been reported in gymnosperms, Amborella (sister to flowering plants), and basal monocot orders Liliales, Asparagales, Zingiberales, Arecales, but not in the Poales, a sister order comprising grasses and ~3,000 species of bromeliads including pineap
Original languageEnglish
StatePublished - Jan 13 2020


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