A new auxin-inhibiting substance, 4-Cl-6,7-dimethoxy-2-benzoxazolinone, from light-grown maize shoots

Toyoaki Anai, Hiroko Aizawa, Nobuyuki Ohtake, Seiji Kosemura, Syosuke Yamamura, Koji Hasegawa

Research output: Contribution to journalArticle

28 Citations (Scopus)


Two auxin-inhibiting substances were isolated from light-grown maize shoots. One was a new compound and determined from its spectral data as 4-Cl-6,7-dimethoxy-2-benzoxazolinone (Cl-DMBOA). Another was identified from its spectral data as a known compound, 6,7-dimethoxy-2-benzoxazolinone (DMBOA). Above concentrations of 10-5 M, Cl-DMBOA inhibited the auxin-inducing elongation in the Avena coleoptile section test. Its inhibitory activity was almost comparable to that of DMBOA and higher than that of 6-methoxy-2-benzoxazolinone (MBOA) which we previously isolated.

Original languageEnglish
Pages (from-to)273-275
Number of pages3
Issue number2
Publication statusPublished - 1996 Jan 1



  • Auxin-inhibiting substance, 4-Cl-6,7-dimethoxy-2-benzoxazolinone
  • Gramineae
  • Maize shoots
  • Zea mays

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Plant Science
  • Horticulture

Cite this