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Phytotoxicity stress induced by allelochemicals from foliar spray of Sida cordifolia methanol leaf extract on Ageratum conyzoides and Oryza sativa


Citation

Ahmed, Hassan and Juraimi, Abdul Shukor and Ahmad Hamdani, Muhammad Saiful and Omar, Dzolkhifli and Yusof, Mohammad Rafii (2024) Phytotoxicity stress induced by allelochemicals from foliar spray of Sida cordifolia methanol leaf extract on Ageratum conyzoides and Oryza sativa. Current Applied Science and Technology, 25 (1). art. no. e0258789. pp. 1-15. ISSN 2586-9396

Abstract

Allelochemicals are key inhibitors that induce chemical stress in plants. Their mechanisms as agents of oxidative stress are not well understood. A field study was conducted to evaluate herbicidal potential of Sida cordifolia methanol leaf extract (SCLE) on Ageratum conyzoides and Oryza sativa (weedy rice). SCLE concentrations of 0, 3, 6 and 9 g L-1 were prepared and sprayed twice at 7 days interval. The results showed that the SCLE significantly (p<0.05) affected growth attributes, chlorophyll pigments, and proline, and catalase, superoxide dismutase and peroxidase enzyme activities in a concentration-dependent pattern. It was found that high concentrations of SCLE induced greater phytotoxicity against A. conyzoides compared to O. sativa. SCLE spraying stimulated production of reactive oxygen species, boosting their ability to cause damage and inhibit growth. The allelochemicals in the extract stimulated an increased in the level of proline, which is an indicator of oxidative stress. Understanding the physiological and biochemical responses to Sida extract can improve our knowledge on allelochemical target sites and help us to explicate the mechanisms of action of such compounds.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
DOI Number: https://doi.org/10.55003/cast.2024.258789
Publisher: King Mongkut's Institute of Technology Ladkrabang
Keywords: Allelochemical; Allelopathy; Antioxidant; Inhibition; Methanol extract; Sida
Depositing User: Ms. Nur Faseha Mohd Kadim
Date Deposited: 22 May 2025 09:09
Last Modified: 22 May 2025 09:09
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.55003/cast.2024.258789
URI: http://psasir.upm.edu.my/id/eprint/117441
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