Overview of Allelopathic Potential of Lemna minor L. Obtained from a Shallow Eutrophic Lake

Gostyńska, Julia; Pankiewicz, Radosław; Romanowska-Duda, Zdzisława; Messyasz, Beata

doi:10.3390/molecules27113428

Cited by 13 publications

(6 citation statements)

References 37 publications

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“…This enables them to quickly cover any open-water space available to them and consolidate their areas of dispersion by forming multi-layered mats. Their rapid, surface-covering growth can deprive other photosynthetic aquatic organisms of space, light, and nutrients, thus diminishing their competitive ability (see [132]). This is illustrated by the designation of La.…”

Section: Competitionmentioning

confidence: 99%

Survival Strategies of Duckweeds, the World’s Smallest Angiosperms

Ziegler

Appenroth²,

Sree

2023

Plants

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Duckweeds (Lemnaceae) are small, simply constructed aquatic higher plants that grow on or just below the surface of quiet waters. They consist primarily of leaf-like assimilatory organs, or fronds, that reproduce mainly by vegetative replication. Despite their diminutive size and inornate habit, duckweeds have been able to colonize and maintain themselves in almost all of the world’s climate zones. They are thereby subject to multiple adverse influences during the growing season, such as high temperatures, extremes of light intensity and pH, nutrient shortage, damage by microorganisms and herbivores, the presence of harmful substances in the water, and competition from other aquatic plants, and they must also be able to withstand winter cold and drought that can be lethal to the fronds. This review discusses the means by which duckweeds come to grips with these adverse influences to ensure their survival. Important duckweed attributes in this regard are a pronounced potential for rapid growth and frond replication, a juvenile developmental status facilitating adventitious organ formation, and clonal diversity. Duckweeds have specific features at their disposal for coping with particular environmental difficulties and can also cooperate with other organisms of their surroundings to improve their survival chances.

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Section: Competitionmentioning

confidence: 99%

Survival Strategies of Duckweeds, the World’s Smallest Angiosperms

Ziegler

Appenroth²,

Sree

2023

Plants

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“…However, since greater biomass production was observed for both L. minor and S. molesta when in co-culture, a possible explanation could be the presence of a substance with an allelopathic effect in the growth media, which can limit or stimulate the development, reproduction, and survival of target organisms [58,59]. Studies have reported the allelopathic potential of L. minor plants, showing, however, the negative effects of the allelochemicals produced by these plants [59,60]. Similarly, negative allelopathic effects have been described for S. molesta plants [61,62].…”

Section: Discussionmentioning

confidence: 99%

Synergistic Removal of Ciprofloxacin and Sulfamethoxazole by Lemna minor and Salvinia molesta in Mixed Culture: Implications for Phytoremediation of Antibiotic-Contaminated Water

Kochi

Kitamura

Rocha

et al. 2023

Water

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Aquatic macrophytes have been used for the removal of antibiotics from contaminated water. Here, we have studied the capacity of Lemna minor and Salvinia molesta to reclaim ciprofloxacin (1.5 µg Cipro L−1) and/or sulfamethoxazole (0.3 µg Sulfa L−1) from artificially contaminated waters when plants were exposed in monoculture (L. minor or S. molesta) or in mixed culture (L. minor + S. molesta). Neither Cipro nor Sulfa alone induced negative effects on plants. As shown by the Abbot modelling, Cipro and Sulfa displayed antagonistic effects on plants. In both species, increased H2O2 concentrations and antioxidant enzyme activities were observed in plants when grown together. Although the antibiotics showed natural degradation, their concentration in water from treatments with plants was significantly lower, indicating the ability of the plants to uptake the compounds. When in co-culture, greater growth rates were observed for both plant species, which resulted in greater Cipro and Sulfa removal in the mixed system when compared with those with plants in monoculture. Both plants showed tolerance to the studied concentrations of antibiotics, with greater antibiotic uptake being reported for S. molesta. Although at the tested concentrations the antibiotics did not induce negative effects on plants, exposure to Cipro changed the relative yield of S. molesta, which may result in effects on community structure. The use of both L. minor and S. molesta in artificial wetlands may increase the phytoremediation capacity of systems.

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“…Moreover, in view of the common phenomenon wherein some plants may produce allelopathic substances that inhibit the growth of other plants, duckweed may also be one of these plants. Contemporary researchers have discovered that duckweeds contain underlying allelopathic compounds such as phenolic acids and ionone that act against both aquatic and terrestrial plants [70][71][72], but there is no clear evidence to support their contribution in weeding.…”

Section: Weeding Mechanism Of Duckweedmentioning

confidence: 99%

An Ecological Weed Control Strategy in Paddy Fields: Light Interception from Duckweed Mulching

Xu,

Wang,

Ding

et al. 2024

Agronomy

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Rice–duckweed coculturing as an advanced technique has proven effective for weed control. However, the complex environmental interactions underlying its effectiveness remain unclear. In this study, a controlled pot experiment was conducted to isolate the shading effect of duckweeds (Landoltia punctata and Spirodela polyrhiza) from their intricate environmental interactions with paddy weeds (Cyperus difformis, Eclipta prostrata, and Ammannia auriculata). The results revealed that as the duckweeds grew, there were notable decreases in total weed density (52.41–77.01%) and biomass (42.33–99.23%) while rice biomass remained unaffected. Duckweed covering allowed less than 8.64% of light to pass through and led to decreases in environmental temperature, pH, and dissolved oxygen concentration in the floodwater, but had little impact on inorganic nitrogen levels. Through screening with random forest analysis and structural equation modelling, it was found that weed density and biomass were predominantly influenced by the reduced light transmittance (54.1% and 77.2%, p ≤ 0.001) resulting from duckweed covering while the decline in dissolved oxygen content partly influenced weed density (18%). In conclusion, this study’s results bring a different perspective, confirming the sunlight-shading effect of duckweed as a critical mechanism significantly inhibiting the germination and growth of weeds. These findings provide a scientific basis for the improved application of ecological weed control methods in paddy fields.

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Overview of Allelopathic Potential of Lemna minor L. Obtained from a Shallow Eutrophic Lake

Cited by 13 publications

References 37 publications

Survival Strategies of Duckweeds, the World’s Smallest Angiosperms

Survival Strategies of Duckweeds, the World’s Smallest Angiosperms

Synergistic Removal of Ciprofloxacin and Sulfamethoxazole by Lemna minor and Salvinia molesta in Mixed Culture: Implications for Phytoremediation of Antibiotic-Contaminated Water

An Ecological Weed Control Strategy in Paddy Fields: Light Interception from Duckweed Mulching

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