Phytotoxic property of Piper retrofractum fruit extracts and compounds against the germination and seedling growth of weeds

Prapaipit Suwitchayanon, Osamu Ohno, Kiyotake Suenaga, Hisashi Kato-Noguchi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The fruits of Piper retrofractum Vahl. contain a variety of compounds, but no phytotoxic compound with plant growth inhibitory activity has been reported. Therefore, the phytotoxic activity of P. retrofractum fruit extracts was investigated and found the reduction of seedling growth of cress, lettuce, alfalfa, barnyard grass, Italian ryegrass, and jungle rice. Seven bioactive compounds were isolated from the fruit extracts and identified as 3-phenylpropanoic acid (1), (2E,4E)-methyl piperate (2), (2E,4Z)-methyl piperate (3), piperlonguminine (4), dihydropiperine (5), isochavicine (6), and piperine (7). There have been no reports for their phytotoxic activity. The activity of these compounds was determined against the germination and seedling growth of cress and barnyard grass. The total germination percentage (GP) of cress was significantly inhibited by 1, 2, and 6 (40–100% inhibition), while its germination index or progressive total of cumulative germination (GI) was the most sensitive to 1, leading to the longest time required for 50% germination (T 50 ) at 57 h behind control. However, the seedling growth of cress was highly inhibited by 6 with I 50 values of 11 µM. The compounds 1 and 5–7 showed significant inhibition on GP of barnyard grass by 55–47%, while 5 and 1 effectively reduced GI and extended T 50 to 42–48 h behind control, and 7 showed the most growth inhibition with I 50 values of 37 µM. The inhibitory effects of the seven compounds indicate the phytotoxic property of P. retrofractum fruits, which 1, 5–7 may be the main compounds responsible for the phytotoxicity.

Original languageEnglish
Article number33
JournalActa Physiologiae Plantarum
Volume41
Issue number3
DOIs
Publication statusPublished - 2019 Mar 1

Fingerprint

Piper
fruit extracts
Germination
Seedlings
seedling growth
Fruit
Brassicaceae
weeds
germination
Echinochloa
Growth
Echinochloa crus-galli
piperine
Lettuce
Lolium
fruits
Medicago sativa
Lolium multiflorum
phytotoxicity
lettuce

Keywords

  • Growth inhibitor
  • Natural herbicide
  • Phytotoxic activity
  • Weed control

ASJC Scopus subject areas

  • Physiology
  • Agronomy and Crop Science
  • Plant Science

Cite this

Phytotoxic property of Piper retrofractum fruit extracts and compounds against the germination and seedling growth of weeds. / Suwitchayanon, Prapaipit; Ohno, Osamu; Suenaga, Kiyotake; Kato-Noguchi, Hisashi.

In: Acta Physiologiae Plantarum, Vol. 41, No. 3, 33, 01.03.2019.

Research output: Contribution to journalArticle

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