Allelopathy and the allelothathic activity of a phenylpropanol from cucumber plants

Ho Le Thi, Teruya Toshiaki, Kiyotake Suenaga, Duong Van Chin, Hisashi Kato-Noguchi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The growth inhibitory effect of cucumber (Cucumis sativus L.) plants after crop harvested was investigated. Aqueous methanol extracts of the cucumber plants inhibited the growth of roots and shoots of cress (Lepidium sativum L.), lettuce (Lactuca sativa L.), alfalfa (Medicago sativa L.), ryegrass (Lolium multiflorum L.), timothy (Pheleum pratense L.), crabgrass (Digitaria sanguinalis L.), Echinochloa crus-galli (L.) Beauv and Echinochloa colonum (L.) Link, and increasing the extract concentration increased the inhibition. These results suggest that cucumber plants may possess allelopathic activity. The aqueous methanol extract of cucumber plants was divided into ethyl acetate and aqueous fractions, and the growth inhibitory activity of ethyl acetate fraction was greater than that of aqueous fraction. Thus, ethyl acetate fraction was further purified and a main allopathically active substance in the fraction was isolated and determined as (S)-2-benzoyloxy-3-phenyl-1-propanol by spectral data. This substance inhibited root and shoot growth of cress seedlings at concentrations greater than 10 μM, and the concentration required for 50% inhibition of root and shoot growth was 21 and 23 μM, respectively. These results suggest that (S)-2-benzoyloxy-3-phenyl-1-propanol may contribute to the growth inhibitory effect of cucumber plants and may play an important role in cucumber allelopathy. Thus, cucumber plants may be potentially useful for weed management in a field setting.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalPlant Growth Regulation
Volume56
Issue number1
DOIs
Publication statusPublished - 2008 Sep

Fingerprint

Allelopathy
Cucumis sativus
allelopathy
cucumbers
Digitaria
Echinochloa
Growth
1-propanol
Brassicaceae
Lettuce
Lolium
Medicago sativa
Plant Extracts
shoots
extracts
methanol
Methanol
water
Echinochloa colona
Lepidium sativum

Keywords

  • Allelopathy
  • Cucumber
  • Cucumis sativus
  • Growth inhibition
  • Weed management

ASJC Scopus subject areas

  • Plant Science

Cite this

Allelopathy and the allelothathic activity of a phenylpropanol from cucumber plants. / Le Thi, Ho; Toshiaki, Teruya; Suenaga, Kiyotake; Van Chin, Duong; Kato-Noguchi, Hisashi.

In: Plant Growth Regulation, Vol. 56, No. 1, 09.2008, p. 1-5.

Research output: Contribution to journalArticle

Le Thi, Ho ; Toshiaki, Teruya ; Suenaga, Kiyotake ; Van Chin, Duong ; Kato-Noguchi, Hisashi. / Allelopathy and the allelothathic activity of a phenylpropanol from cucumber plants. In: Plant Growth Regulation. 2008 ; Vol. 56, No. 1. pp. 1-5.
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AB - The growth inhibitory effect of cucumber (Cucumis sativus L.) plants after crop harvested was investigated. Aqueous methanol extracts of the cucumber plants inhibited the growth of roots and shoots of cress (Lepidium sativum L.), lettuce (Lactuca sativa L.), alfalfa (Medicago sativa L.), ryegrass (Lolium multiflorum L.), timothy (Pheleum pratense L.), crabgrass (Digitaria sanguinalis L.), Echinochloa crus-galli (L.) Beauv and Echinochloa colonum (L.) Link, and increasing the extract concentration increased the inhibition. These results suggest that cucumber plants may possess allelopathic activity. The aqueous methanol extract of cucumber plants was divided into ethyl acetate and aqueous fractions, and the growth inhibitory activity of ethyl acetate fraction was greater than that of aqueous fraction. Thus, ethyl acetate fraction was further purified and a main allopathically active substance in the fraction was isolated and determined as (S)-2-benzoyloxy-3-phenyl-1-propanol by spectral data. This substance inhibited root and shoot growth of cress seedlings at concentrations greater than 10 μM, and the concentration required for 50% inhibition of root and shoot growth was 21 and 23 μM, respectively. These results suggest that (S)-2-benzoyloxy-3-phenyl-1-propanol may contribute to the growth inhibitory effect of cucumber plants and may play an important role in cucumber allelopathy. Thus, cucumber plants may be potentially useful for weed management in a field setting.

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