Isolation and identification of plant growth inhibitors as candidate(s) for allelopathic substance(s), from aqueous leachate from mesquite (Prosopis juliflora (Sw.) DC.) leaves

Hiroshi Nakano, Yoshiharu Fujii, Kosumi Yamada, Seiji Kosemura, Shosuke Yamamura, Koji Hasegawa, Takahisa Suzuki

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

As candidate(s) for allelopathic substance(s), two plant growth inhibitors were isolated from aqueous leachate of leaves of mesquite, which show a strong allelopathy, and which were identified as syringin and (-)-lariciresinol by their spectral analyses. Syringin inhibited root and shoot growth of lettuce seedlings at concentrations greater than 0.8 μM, and root and shoot growth of barnyard grass seedlings at concentrations greater than 2.7 and 26.9 μM, respectively. On the other hand, (-)-lariciresinol inhibited root and shoot growth of lettuce seedlings at concentrations greater than 2.8 and 0.8 μM, and root and shoot growth of barnyard grass seedling at concentrations greater than 0.8 and 2.8 μM, respectively. The contents of syringin and (-)-lariciresinol in the rhizosphere soil of mesquite were 0.34 and 0.38 μg/g soil, respectively. These results indicate that syringin and (-)-lariciresinol are allelopathic substance(s), and may play roles in the allelopathy of mesquite.

Original languageEnglish
Pages (from-to)113-117
Number of pages5
JournalPlant Growth Regulation
Volume37
Issue number2
DOIs
Publication statusPublished - 2002 Jun 1

Keywords

  • (-)-Lariciresinol
  • Allelopathic substance
  • Allelopathy
  • Growth-inhibitory substance
  • Leaf exudate
  • Mesquite
  • Prosopis juliflora
  • Syringin

ASJC Scopus subject areas

  • Physiology
  • Agronomy and Crop Science
  • Plant Science

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