Allelopathic potential of aqueous leaf extract of<i>Rumex dentatus</i>L. on metabolites and enzyme activities of common purslane leaves

El-Shora, Hamed M.; Alharbi, Maha Mohammed; Darwish, Doaa Bahaa Eldin; Gad, Dina

doi:10.1080/17429145.2022.2028915

Cited by 10 publications

(5 citation statements)

References 71 publications

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“…In line with our results, Unal et al [81] reported a concentration-dependent increase in total protein content in white mustard leaves in response to the treatment with sunflower and wheat root exudates. Similarly, the increase in free amino acid content has been reported in several plant species; P. oleracea leaves after the treatment with Rumex dentatus leaf extract [82] and R. dentatus as a result of Withania somnifera root extract treatment [83]. Unlike our results, several previous publications have shown a decrease in protein and sugar content with increasing extract concentration and, thus, attributed the increased free amino acid content to the degradation of highly abundant proteins [84].…”

Section: Discussionsupporting

confidence: 85%

Potential Allelopathic Effect of Wheat Straw Aqueous Extract on Bermudagrass Noxious Weed

2022

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Residues of several crops, including wheat, have a promising allelopathic effect on noxious weed species and thus represent eco-friendly alternatives to harmful, widely applied herbicides. The current investigation deals with the effects of wheat straw aqueous extract on the growth and biochemical aspects of bermudagrass (Cynodon dactylon L.) as a model of harmful weeds for the wheat crop. The prepared aqueous extract from wheat straw was subjected to high-performance liquid chromatography (HPLC) analysis to identify and quantify phenolic and flavonoid components. In addition, the allelopathic effect of different concentrations of the extract on the germination, seedling growth, and biochemical aspects of bermudagrass was assessed. Our findings showed a significant decrease in bermudagrass seed germination percentage (ranging from 29.6 to 82.4%) and germination index (ranging from 10.07 to 32.43) in response to the extract treatments and a significant decline in all morphological growth parameters of the seedling. HPLC analysis of the extract showed the presence of seven phenolic acids and six flavonoids. The most prevalent phenolics included pyrogallol (13.75 µg/g), ferulic acid (9.82 µg/g), gallic acid (8.5 µg/g), and isoferulic acid (4.47 µg/g), while the predominant flavonoids included catechin (11.04 µg/g), luteolin (8.26 µg/g) and quercetin (7.74 µg/g). The highest extract concentrations (75% and 100%) showed a corresponding decline in the leaf content of chlorophylls a and b but a significant increase in the content of free amino acids, total protein and soluble carbohydrates. Superoxide dismutase (SOD) activity exposed a concentration-dependent reduction, while the activities of both catalase (CAT) and ascorbate peroxidase (APX) were reduced only with the highest extract concentration. The principal component analysis (PCA) showed a high correlation among the morphological growth parameters, indicating that these elements either have a common ground of variance or are inter-correlated. Accordingly, our findings suggest the possibility of combating bermudagrass weeds using the aqueous extract of wheat straw.

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Section: Discussionsupporting

confidence: 85%

Potential Allelopathic Effect of Wheat Straw Aqueous Extract on Bermudagrass Noxious Weed

2022

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“…It has the ability for vegetative reproduction (forming lateral roots from stem fragments) and can produce a large number of seeds within six weeks after germination (a single plant can produce 10,000 to 242,000 seeds.) [29][30][31]. Purslane, on the other hand, ranks ninth among the most dangerous weeds globally due to its ability to produce a significant number of seeds within a short period after germination [20,32].…”

Section: Resultsmentioning

confidence: 99%

In vitro Allelopathic Potential of Leaf Water Extracts of Plantago lanceolata and P. major on the Germination of Some Crops

Yaraş,

Yılmazer

2024

Journal of Advanced Research in Natural and Applied Sciences

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Alongside increasing productivity in plant production, reducing crop losses has become a major focus for the struggle of today’s man against hunger. Allelopathy, an ecological phenomenon in which organisms interfere with each other, can be a useful strategy in agricultural systems, especially for weed management. In this study, the allelopathic effects of leaf water extracts from two weed species, Plantago lanceolata and P. major, on the seed germination of some crop plants, including wheat, sunflower, lentil, bean, carrot, radish, and purslane were investigated. In vitro germination assays were conducted to determine the effects of different dilutions of the stock extract on the germination rate. The results of the study showed that as the concentration of the extracts from both weeds increased, germination rates decreased in all crop plants. As to the seeds that were exposed to P. lanceolata extract, the ones with the most inhibited germination were carrot (11.84-100%), purslane (18.53-100%), radish (6.17-98.84%), lentil (13.77-95.56%), sunflower (17.57-94.98%), and wheat (30.12-78.31%). The seeds of beans (28.69-39.15%), on the other hand, were the least affected. Similarly, for seeds exposed to P. major extract, the ones with the most inhibited germination were carrot (4.67-100%), lentil (65.46-99.55%), purslane (25.09-99.24%), radish (48.69-95.51%), sunflower (43.68-93.16%), and beans (20.70-66.80%), while wheat (12.35-60.62%) seeds were the least affected. If purslane and radish are considered as weeds, our findings suggest that higher concentrations of P. lanceolata and P. major extracts can be effective bioherbicides for controlling these weeds.

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“…Allelopathic compounds can also reduce the activity of metabolic enzymes, proteins, carbohydrates, and nucleic acid content. This decrease in metabolite and enzyme activity is considered the mechanism of action of allelochemicals and provides the basis for further studies on the use of allelopathic plant extracts as biological herbicides for weed control [19].…”

Section: Discussionmentioning

confidence: 99%

“…Allelopathy studies have been conducted on different parts of the plant and it has been found that aqueous extracts of leaves show higher germination inhibition, probably due to the higher metabolic activity of leaves, which contain more allelochemical compounds than other tissues [19][20][21]. Allelopathic aqueous extracts are water-soluble allelochemicals extracted from plants that can be used as natural herbicides and are more environmentally friendly than synthetic herbicides [15,16].…”

Section: Introductionmentioning

confidence: 99%

Allelopathic Effect of Aqueous Extracts of Grass Genotypes on Eruca Sativa L.

Motalebnejad,

Karimmojeni,

Majidi

et al. 2023

Plants

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The aim of the current research is to evaluate the allelopathic activity of fifty grass genotypes from different species and to identify phenolic compounds in the genotypes that have the highest allelopathic activity and inhibitory effect on Eruca sativa L. (Rocket). Aqueous extract was prepared from the leaves of grass genotypes in different concentrations and its effect on germination and growth of E. sativa L. was measured. According to the results, the type of genotype and the concentration of the extract significantly decreased the percentage of germination, hypocotyl length, radicle length, and dry weight of E. sativa L. seedlings. Increasing the concentration of the extract resulted in a decrease in germination and growth of seedlings. The genotypes of Festulolium (Festulolium) (GR 5009, GR 1692, GR 5004) had the most inhibitory effect on the growth of E. sativa L. Also, among the genotypes studied, two genotypes (DG-M) and (DG-P) of Dactylis glomerata L. (orchardgrass) species showed the least allelopathic activity. The results of HPLC-MS indicated nine phenolic compounds including caffeic acid, syringic acid, vanillic acid, p-coumaric acid, ferulic acid, apigenin acid, chlorogenic acid, 4-hydroxybenzoic acid, and gallic acid. The phenolic compound most present in the aqueous extract was caffeic acid. However, phenolic compounds derived from Festulolium genotypes showed the greatest allelopathic action on the growth parameters of E. sativa L. The aqueous extracts of the Festulolium genotypes can be considered valid systems of sustainable weed control thanks to the phytocomplex rich in phenols.

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Allelopathic potential of aqueous leaf extract ofRumex dentatusL. on metabolites and enzyme activities of common purslane leaves

Cited by 10 publications

References 71 publications

Potential Allelopathic Effect of Wheat Straw Aqueous Extract on Bermudagrass Noxious Weed

Potential Allelopathic Effect of Wheat Straw Aqueous Extract on Bermudagrass Noxious Weed

In vitro Allelopathic Potential of Leaf Water Extracts of Plantago lanceolata and P. major on the Germination of Some Crops

Allelopathic Effect of Aqueous Extracts of Grass Genotypes on Eruca Sativa L.

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