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{"title":"A micropeptide decelerator","authors":"Jun Lyu","doi":"10.1038/s41477-024-01881-y","DOIUrl":null,"url":null,"abstract":"","PeriodicalId":18904,"journal":{"name":"Nature Plants","volume":"10 12","pages":"1849-1849"},"PeriodicalIF":15.8000,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature Plants","FirstCategoryId":"99","ListUrlMain":"https://www.nature.com/articles/s41477-024-01881-y","RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
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微肽减速剂
利用两种不同KDRs的玉米自交系杂交获得的重组自交系,研究人员发现了一个大效数量性状位点qKDR1。该位点的1417 bp序列是因果关系,因为它的敲除减缓了KDR。该位点上的不同等位基因对应不同的KDRs和附近的RPG (qKDR1调节肽基因)基因的差异表达。RPG在玉米籽粒中高表达,其染色质在空间上与qKDR1的染色质相互作用,因此可能是qKDR1的靶标。在瞬时转录活性测定中,qKDR1抑制RPG的表达。在qKDR1敲除系中,RPG表达增加,因此RPG被qKDR1抑制。此外,两个MYB转录因子(ZmMYBST1和ZmMYBR43)结合到qKDR1区域。它们的共表达抑制了RPG基因的表达和双突变体KDR的减速,表明它们是调控RPG基因和果仁脱水的上游组分。
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