Novel and holistic approaches are required to realize allelopathic potential for weed management

Hickman, Darwin T.; Comont, David; Rasmussen, Amanda; Birkett, Michael A.

doi:10.1002/ece3.10018

Cited by 10 publications

(4 citation statements)

References 158 publications

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“…Despite established dependencies in the dynamics of allelopathic relationships in plant communities, allelopathic interference is still underutilized in agricultural practice. The main reasons for this are the prevailing limitations in unifying experimental Life 2024, 14, 687 2 of 11 practices, mainly related to the use of different carriers and techniques of extraction of allelochemicals and their identification when performing experimental studies [13][14][15][16]. The obtained extracts from plant fresh and/or dry biomass are extremely unstable; thus, they create suitable conditions for the development of microorganisms that have a negative impact on the germination and initial development of test plants and there are problems in distinguishing the effects of allelochemicals from those of microorganisms.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Allelopathy Screening Bioassays by Using Nano Silver

Marinov-Serafimov,

Golubinova,

Zapryanova

et al. 2024

Life

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Nano solutions are widely used in medicine and also have the potential to be used when performing allelopathy screening studies. The present experiment aimed to test the effectiveness of colloidal nano silver Silver–Amber© with nanoparticles of 20 nm (>20 mg/L at a purity level of 99.99%) as a carrier of allelochemicals in laboratory conditions. The influence of eleven concentrations of Silver–Amber© (0.10, 0.20, 0.39, 0.78, 1.56, 3.13, 6.25, 12.5, 25.0, 50.0 and 100.0% v/v) on the germination and initial development of test plant Lactuca sativa L. in 0.75% agar medium was studied. Data revealed that when increasing the quantitative ratio of Silver–Amber©, an inhibitory effect on seed germination (from 37.8 to 94.3%) and on the plant growth (from 54.0 to 98.9%) appeared. Lower concentrations (0.63 to 0.04 ppm) had an indifferent to statistically unproven stimulatory effect on the germination and initial development of L. sativa (GI ranged from 88.7–94.6%). Therefore, nano silver can be used as carrier of allelochemicals in allelopathic studies in laboratory conditions.

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Section: Introductionmentioning

confidence: 99%

Optimizing Allelopathy Screening Bioassays by Using Nano Silver

Marinov-Serafimov,

Golubinova,

Zapryanova

et al. 2024

Life

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“…Allelopathy is a multidimensional phenomenon involving different types of biological interactions (plant-plant, plant-microorganism, plant-insect, etc.) and consistently observed in both natural and anthropogenic ecosystems [3][4][5]. In recent years, the study of allelopathy has focused on Agronomy 2024, 14, 575 2 of 11 the selection of plant extracts and allelochemicals for their potential as bioherbicides [6].…”

Section: Introductionmentioning

confidence: 99%

Allelopathic Activity of Three Wild Mediterranean Asteraceae: Silybum marianum, Cynara cardunculus var. sylvestris, Galactites tomentosus

La Iacona,

Lombardo,

Mauromicale

et al. 2024

Agronomy

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The manipulation of allelopathic mechanisms, such as the isolation of plant allelochemicals for bioherbicide production, is currently providing a new tool for weed management methods of reducing or potentially eliminating the use of synthetic herbicides. In Mediterranean agroecosystems, wild Asteraceae are the prevalent taxa, likely due to their allelopathic activity. Hence, the objective of this study was to evaluate the allelopathic effects of the aqueous extracts obtained from milk thistle [Silybum marianum (L.) Gaertn], wild cardoon (Cynara cardunculus L. var. sylvestris) and purple milk thistle (Galactites tomentosus Moench) on the seed germination, mean germination time, and seedling growth of three target weeds: Portulaca oleracea L., Taraxacum officinale (Weber) ex Wiggers and Anagallis arvensis L. The total polyphenol (TP), flavonoid (TF), flavonol (TFL), and phenolic acid (TPA) content in the aqueous extracts was also evaluated. Overall, the allelopathic effects were species-dependent and root length was the most affected parameter. All extracts completely inhibited root development in P. oleracea. Averaged over target weeds, C. cardunculus extract had the greatest allelopathic activity, followed by G. tomentosus and by S. marianum. In particular, C. cardunculus reduced seed germination by over 50% and increased the mean germination time by 154%, likely due to the highest TP (13.2 g kg−1 DM) and TPA (11.4 g kg−1 DM) content, compared to the other Asteraceae species. These results provide evidence of the phytotoxic activity of the three wild Asteraceae members and suggest their possible future exploitation as potential bioherbicides for sustainable weed management.

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“…While understanding the allelopathic effects and optimizing their application is important, mechanistic aspects are also crucial to the success of such initiatives. A greater understanding of plant-plant communication, recognition, and the potential non-target effects of allelochemicals, would elevate allelopathic plants from blunt tools for weed control to intelligent components of an integrated weed management program [3]. However, using allelopathic crops for weed management also has some challenges.…”

Section: Introductionmentioning

confidence: 99%

Camelina sativa (L.) Crantz as a Promising Cover Crop Species with Allelopathic Potential

Ghidoli,

Pesenti,

Colombo

et al. 2023

Agronomy

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The ability of plants to release chemicals that affect the growth of other plants offers potential benefits for weed management and sustainable agriculture. This review explores the use of Camelina sativa as a promising cover crop with weed control potential. Camelina sativa, known for its high oil content and adaptability to diverse climatic conditions, exhibits allelopathic potential by releasing chemical compounds that inhibit weed growth. The crop’s vigorous growth and canopy architecture contribute to effective weed suppression, reducing the prevalence and spread of associated pathogens. Furthermore, the chemical compounds released by camelina through the solubilization of compounds from leaves by rain, root exudation, or deriving from microbial-mediated decay of camelina’s tissues interfere with the growth of neighbouring plants, indicating allelopathic interactions. The isolation and identification of benzylamine and glucosinolates as allelochemicals in camelina highlight their role in plant–plant interactions. However, the studies carried out on this species are outdated, and it cannot be excluded that other chemicals deriving from the breakdown of the glucosinolates or belonging to other classes of specialized metabolites can be involved in its allelopathic potential. Camelina sativa also demonstrates disease suppression capabilities, with glucosinolates exhibiting fungicidal, nematocidal, and bactericidal activities. Additionally, camelina cover crops have been found to reduce root diseases and enhance growth and yields in corn and soybeans. This review sheds light on the allelopathic and agronomic benefits of Camelina sativa, emphasizing its potential as a sustainable and integrated pest management strategy in agriculture.

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Novel and holistic approaches are required to realize allelopathic potential for weed management

Cited by 10 publications

References 158 publications

Optimizing Allelopathy Screening Bioassays by Using Nano Silver

Optimizing Allelopathy Screening Bioassays by Using Nano Silver

Allelopathic Activity of Three Wild Mediterranean Asteraceae: Silybum marianum, Cynara cardunculus var. sylvestris, Galactites tomentosus

Camelina sativa (L.) Crantz as a Promising Cover Crop Species with Allelopathic Potential

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