Impact of allelochemicals isolated from Alternanthera ficoidea (L.) P. Beauv on regulation of physiobiochemical changes of mung bean (Vigna radiata L.) R. Wilczek.

Authors

Bikash Mondal, Jahanur Hossain, Abdul Motaleb, Koushik Chandra, Parthapratim Maiti

Published in

Environmental science and pollution research international. Jun 06, 2025. Epub Jun 06, 2025.

Abstract

The present investigation aims at assessing the allelopathic potential of Alternanthera ficoidea, an alien invasive weed in West Bengal, India. The allelopathic efficacy of leaf extracts in both aqueous and organic solvents of A. ficoidea has been evaluated from changes of germination and metabolism analyses of mung bean [Vigna radiata (L.) R. Wilczek K-75] seeds. The extracts altered the germination behaviour, recorded in terms of percentage, T₅₀ values, speed, and TTC stainability of germinating seeds. The contents of insoluble carbohydrates, proteins, DNA and RNA as well as activities of catalase and dehydrogenase in seed kernels have been reduced. In contrast, the levels of amino acids, soluble carbohydrates, and amylase activity have been found higher in treated seeds. Reduced germinability and metabolism were fully concentration dependent. Chromatographic separation and HPLC purification followed by HRMS of methanolic leaf extract of A. ficoidea have resulted in identifying six putative allelochemicals with carboxylic acid functionality. These include: 4-(Hexyloxy)benzoic acid (1), α-Linolenic acid (2), 13-Hydroxy-9,11 octadecadienoic acid (3), 4- Coumaroylquinic acid (4), 2-methyl 13-docosenoic acid (5), and 3-(4-Diethylamino-2-hydroxyphenylazo)-4-hydroxybenzenesulfonic acid (6). The cumulative impact of these allelochemicals reflected on regulation of germination and metabolism of mung bean seeds, including germination percentage, T₅₀ values, and speed of germination. The allelopathic potential of A. ficoidea on the mung bean seeds has further been elucidated using steady-state fluorescence spectroscopy.

PMID:
40478428
Bibliographic data and abstract were imported from PubMed on 06 Jun 2025.

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