Isolation and characterization of a cDNA encoding polyketide reductase in Lotus japonicus

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Leguminous plants have a unique pathway for production of 5-deoxy-type flavonoids and isoflavonoids that is distinct from the general flavonoid pathways. 5-Deoxy(iso)flavonoids are believed to play important eco-physiological roles as antimicrobial compounds and symbiotic signals toward rhizobia. The branching point of the 5-deoxyflavonoid pathway is the formation of the deoxy-type chalcone (isoliquiritigenin), which is catalyzed by the co-action of chalcone synthase and polyketide reductase (PKR). In the course of the comparative genomics of legume-specific genes, we cloned a putative cDNA for PKR (<i>cPKR1</i>) of a model legume <i>Lotus japonicus</i> (Regel) K. Larsen. Genomic Southern analysis showed that <i>L. japonicus</i> has a gene family composed of two to four paralogous <i>PKR</i> genes. The overexpression of <i>cPKR</i>1 in a red-flowered cultivar of petunia, "Polo Red Target", reduced anthocyanin accumulation and caused the formation of isoliquiritigenin and its putative derivatives. These results suggested that <i>PKR1</i> encodes a PKR that functions <i>in planta</i>.

収録刊行物

  • Plant biotechnology  

    Plant biotechnology 23(5), 509-513, 2006-12-01 

    Japanese Society for Plant Cell and Molecular Biology

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各種コード

  • NII論文ID(NAID)
    10021909633
  • NII書誌ID(NCID)
    AA11250821
  • 本文言語コード
    ENG
  • 資料種別
    NOT
  • ISSN
    13424580
  • NDL 記事登録ID
    8571196
  • NDL 雑誌分類
    ZR3(科学技術--生物学--植物)
  • NDL 請求記号
    Z54-J126
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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