SEM1

| Categories genes  | Tags map-based cloning  phloem  sugar  plasma membrane  callose biosynthesis  starch accumulation  sucrose transport  photosynthesis 
  • Information
  • Publication

  • Genbank accession number

  • Key message
    • Map-based cloning identified two allelic mutations in a gene encoding a GLUCAN SYNTHASE-LIKE (GSL) protein, thus indicating a role for SEM1 in callose biosynthesis
    • In situ expression analysis and GUS staining showed that SEM1 was mainly expressed in vascular phloem cells
    • Plasma membrane-localized SEM1 protein mediates sugar movement to sink rice tissues.
    • Subcellular localization in rice showed that SEM1 localized to the plasma membrane
    • Map-based cloning identified two allelic mutations in a gene encoding a GLUCAN SYNTHASE-LIKE (GSL) protein, thus indicating a role for SEM1 in callose biosynthesis.
    • Reduced sucrose transport was found in the sem1-1/1-2 mutant, which led to excessive starch accumulation in source leaves and inhibited photosynthesis.
  • Connection

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