Identification and functional analysis of a carlactonoic acid methyltransferase in Arabidopsis

DOI

Bibliographic Information

Other Title
  • シロイヌナズナのストリゴラクトン生合成におけるカーラクトン酸メチル基転移酵素の機能解析

Abstract

<p>Strigolactones (SLs) are a group of plant hormones that regulate not only shoot branching but also various developmental processes in plants. Methyl carlactonoate (MeCLA) has been proposed to be a bioactive molecule because this compound could interact with the AtD14 receptor and rescue the SL-deficient mutants in Arabidopsis. We have recently identified a methyltransferase named CLAMT that converts carlactonoic acid (CLA), a biologically inactive biosynthetic intermediate, into MeCLA in Arabidopsis. Endogenous CLA levels were accumulated, but MeCLA levels were drastically reduced in the clamt mutants. The clamt mutants exhibited a hyper-branching phenotype. This phenotype was rescued by MeCLA but not CLA treatment, supporting the idea that the conversion of CLA to MeCLA is critical in producing the biologically active compound(s) in inhibiting shoot branching. Moreover, by using grafting, we demonstrated that carlactone and CLA are mobile from roots to shoots, but MeCLA is not. Our finding will accelerate the understanding of SL biosynthesis in plants.</p>

Journal

Details 詳細情報について

  • CRID
    1390580162395842560
  • DOI
    10.18978/jscrp.58.1_34
  • ISSN
    21896305
    13465406
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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