Assessment of the Phytotoxic Potential of Dregea volubilis (L.f.) Benth. ex Hook.f. and Identification of its Phytotoxic Substances for Weed Control

Kyaw, Ei Han; Iwasaki, Arihiro; Suenaga, Kiyotake; Kato-Noguchi, Hisashi

doi:10.3390/agriculture12111826

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Assessment of the Phytotoxic Potential of Dregea volubilis (L.f.) Benth. ex Hook.f. and Identification of its Phytotoxic Substances for Weed Control

by

Ei Han Kyaw

^1,2,

Arihiro Iwasaki

³

,

Kiyotake Suenaga

³

and

Hisashi Kato-Noguchi

^1,2,*

¹

Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki, Kagawa 761-0795, Japan

²

The United Graduate School of Agricultural Sciences, Ehime University, Tarumi, Matsuyama 790-8566, Japan

³

Department of Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi, Kohoku, Yokohama 223-8522, Japan

^*

Author to whom correspondence should be addressed.

Agriculture 2022, 12(11), 1826; https://doi.org/10.3390/agriculture12111826

Submission received: 15 September 2022 / Revised: 27 October 2022 / Accepted: 30 October 2022 / Published: 1 November 2022

(This article belongs to the Special Issue Parasitic Plants and Weeds Control in Cropping Systems)

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Abstract

The phytotoxic potential of plants and the effect of their active components on another plant species is being explored as a potential alternative to synthetic herbicides for weed control. In the current study, we investigated the phytotoxic potential of the leaves of Dregea volubilis (L.f.) Benth. ex Hook.f. against four test plants [timothy (Phleum pratense L.), barnyard grass (Echinochloa crus-galli (L.) P. Beauv), lettuce (Lactuca sativa L.), and alfalfa (Medicago sativa L.)] and observed significant growth inhibition on those plants at concentrations >3 mg D.W. equivalent extract mL⁻¹. A bioassay-governed purification of the D. volubilis extracts using different chromatography phases produced two growth inhibitory compounds, 3-hydroxy-α-ionone (compound 1) and 5-hydroxy-3,4-dimethyl-5-pentylfuran-2(5H)-one (compound 2). The compounds retarded the growth of barnyard grass and cress (Lepidium sativum L.) with I₅₀ (concentration required for 50% growth suppression) values ranging from 0.098 to 0.450 mM for 3-hydroxy-α-ionone and 0.029 to 0.420 mM for 5-hydroxy-3,4-dimethyl-5-pentylfuran-2(5H)-one. Thus, the extracts and identified compounds may have the possibility to be utilized as bioagents for weed control.

Keywords: leaf extracts; growth inhibition; 3-hydroxy-α-ionone; 5-hydroxy-3,4-dimethyl-5-pentylfuran-2(5H)-one

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MDPI and ACS Style

Kyaw, E.H.; Iwasaki, A.; Suenaga, K.; Kato-Noguchi, H. Assessment of the Phytotoxic Potential of Dregea volubilis (L.f.) Benth. ex Hook.f. and Identification of its Phytotoxic Substances for Weed Control. Agriculture 2022, 12, 1826. https://doi.org/10.3390/agriculture12111826

AMA Style

Kyaw EH, Iwasaki A, Suenaga K, Kato-Noguchi H. Assessment of the Phytotoxic Potential of Dregea volubilis (L.f.) Benth. ex Hook.f. and Identification of its Phytotoxic Substances for Weed Control. Agriculture. 2022; 12(11):1826. https://doi.org/10.3390/agriculture12111826

Chicago/Turabian Style

Kyaw, Ei Han, Arihiro Iwasaki, Kiyotake Suenaga, and Hisashi Kato-Noguchi. 2022. "Assessment of the Phytotoxic Potential of Dregea volubilis (L.f.) Benth. ex Hook.f. and Identification of its Phytotoxic Substances for Weed Control" Agriculture 12, no. 11: 1826. https://doi.org/10.3390/agriculture12111826

APA Style

Kyaw, E. H., Iwasaki, A., Suenaga, K., & Kato-Noguchi, H. (2022). Assessment of the Phytotoxic Potential of Dregea volubilis (L.f.) Benth. ex Hook.f. and Identification of its Phytotoxic Substances for Weed Control. Agriculture, 12(11), 1826. https://doi.org/10.3390/agriculture12111826

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Assessment of the Phytotoxic Potential of Dregea volubilis (L.f.) Benth. ex Hook.f. and Identification of its Phytotoxic Substances for Weed Control

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