Allelopathic effects and potential active substances of Ceratophyllum demersum L. on Chlorella vulgaris Beij.

Dong, Jing; Chang, Mengyang; Li, Chenlu; Dai, Dujuan; Gao, Yunni

doi:10.1007/s10452-019-09715-2

Cited by 31 publications

(11 citation statements)

References 48 publications

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“…Also, some volatile compounds from C. demersum, including fatty compounds, terpenoids, phenolic compounds, and phthalates, can show a strong inhibitory effect on M. aeruginosa (Xian et al, 2006). Further compounds present in C. demersum tissues, such as hexanoic acid, phthalic acid, octanedioic acid, butenoic acid, azelaic acid, palmitic acid, alpha-linolenic acid, and pentanedioic acid, can also inhibit the growth and induce colony formation in green algae species (Dong et al, 2019). Therefore, allelopathy can act as one of the main adaptative strategies of submerged macrophytes, especially C. demersum, in their competition with phytoplankton (Gross et al, 2003), as well as to maintain the clear state of shallow lakes (Hilt & Gross, 2008).…”

Section: Discussionmentioning

confidence: 99%

Isolated and combined effects of a submerged macrophyte and a cladoceran on the interactions between Microcystis aeruginosa (Cyanobacteria) and Raphidocelis subcapitata (Chlorophyta)

Souza

Amorim²,

Moura

2021

Rev. Biol. Trop.

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Introduction: Cyanobacterial blooms in tropical water bodies are increasingly common, because of eutrophication and rising temperatures. Consequently, many freshwater systems are affected, by reducing water quality, biodiversity, and ecosystem services. With the increased frequency of harmful algal blooms, the development of biological tools to improve water quality is an urgent issue. Objective: To evaluate the effects of a submerged macrophyte and a cladoceran on the microcystin-producing cyanobacteria Microcystis aeruginosa (NPLJ-4) and the chlorophyte Raphidocelis subcapitata (BMIUFRPE-02) in mixed cultures. Methods: Two parallel experiments were carried out for ten days to evaluate the effects of the submerged macrophyte Ceratophyllum demersum and the cladoceran Moina micrura on microalgal interactions. Microalgal strains were cultivated in the ASM1 culture medium, under controlled laboratory conditions. The first experiment presented four treatments: M (C. demersum), Z (M. micrura), MZ (C. demersum and M. micrura), and C (control). Meanwhile, the second experiment consisted of five treatments, in which the microalgae were cultivated together at different Microcystis:Raphidocelis ratios: 1:0, 3:1, 1:1, 1:3, and 0:1. Biomass and growth rates of the strains were evaluated every two days, which were statistically treated with three-way or two-way repeated-measures ANOVA. Results: In the first experiment, M. aeruginosa was significantly inhibited in M and MZ treatments from the second day, and Z from the fourth, while R. subcapitata showed no reduction in its biomass in any treatment. On the other hand, R. subcapitata was stimulated from the eighth and tenth days in M treatment and only on the eighth day in Z treatment. In the second experiment, M. aeruginosa was significantly inhibited when cultivated with R. subcapitata in low ratios (Microcystis:Raphidocelis ratio of 1:3) throughout the experiment, while the chlorophyte was stimulated in that treatment. Conclusions: The coexistence of a cyanobacterium with a green alga did not alter the main negative response of M. aeruginosa to the submerged macrophyte and zooplankton but stimulated the green alga. Accordingly, the introduction of submerged macrophytes and cladocerans already adapted to eutrophic conditions, both isolated and combined, proved to be a good method to control cyanobacterial blooms without negatively affecting other coexisting phytoplankton species.

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Section: Discussionmentioning

confidence: 99%

Isolated and combined effects of a submerged macrophyte and a cladoceran on the interactions between Microcystis aeruginosa (Cyanobacteria) and Raphidocelis subcapitata (Chlorophyta)

Souza

Amorim²,

Moura

2021

Rev. Biol. Trop.

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“…Aquatic plants growing within CWs can exude DOC via their roots or leaves for rootless plants. These compounds can serve as food for the establishment of a bacterial community [14,22,25], or inhibit the growth of other plants [60][61][62]. These plants may also release DOC when they are in contact with water after their death by bacterial degradation of the POM [63].…”

Section: Evolution Of Ph Conductivity Doc Nitrogen Species and O-psmentioning

confidence: 99%

Role of Seasons in the Fate of Dissolved Organic Carbon and Nutrients in a Large-Scale Surface Flow Constructed Wetland

Maurice

Pochet²,

Adouani

et al. 2022

Water

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The role of seasons in the removal of dissolved organic carbon (DOC), nutrients and in changes in the spectral properties of dissolved organic matter (DOM) in a large-scale surface flow constructed wetland (SF-CW) receiving reclaimed water and composed of three basins with different vegetation patterns was studied. Dissolved nitrogen removal efficiencies within the three basins in summer (>50%) and winter (<30%) were significantly different. SF-CW water is enriched in DOC in spring and summer with average outlet concentrations above 8 mg×L−1. UV-visible indices, such as the specific absorbance at 254 nm or the spectral slope between 275 and 295 nm, did not vary over the seasons; thus, the basins did not change DOM aromaticity and average molecular weight. Synchronous fluorescence spectra showed variations in terms of protein-like and humic-like substances, the latter being more sensitive to photodegradation. A lab-scale photodegradation experiment confirmed that radiation from the sun was responsible for this decrease, showing this process could alter the composition of DOM at full-scale. DOM variations result from a seasonal competition between release by vegetation and photodegradation. These results validate the necessity for long-term monitoring of SF-CWs, and the utility of rapid optical methods to monitor DOC.

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“…[ 106 ]. Other species which produce and secrete allelopathic compounds are, for example, Vallisneria spiralis [ 107 ], Ceratophyllum demersum [ 108 ], Potamogeton malaianus [ 109 ], and also charophyte species [ 110 , 111 ]. The allelopathy of macrophytes on microalgae growth is extremely promising due to its low cost, good algal inhibition effect and high environmental safety [ 112 ] and should be also a criterion to consider in the selection of hydrophytes for revegetation.…”

Section: Selection Of Species Most Commonly Used Speciesmentioning

confidence: 99%

“…Among charophytes, Chara vulgaris is maybe the best candidate [ 100 , 147 , 148 , 149 ]. The selection of species with high allelopathic capacity against phytoplankton and periphyton is a complementary issue (e.g., Myriophyllum spicatum [ 105 ], Vallisneria spiralis [ 107 ], Ceratophyllum demersum [ 108 ], Potamogeton malaianus [ 109 ]). P. malaianus also inhibits filamentous algae growth.…”

Section: Final Remarks and Conclusionmentioning

confidence: 99%

Wetland Restoration with Hydrophytes: A Review

Rodrigo

2021

Plants

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Restoration cases with hydrophytes (those which develop all their vital functions inside the water or very close to the water surface, e.g., flowering) are less abundant compared to those using emergent plants. Here, I synthesize the latest knowledge in wetland restoration based on revegetation with hydrophytes and stress common challenges and potential solutions. The review mainly focusses on natural wetlands but also includes information about naturalized constructed wetlands, which nowadays are being used not only to improve water quality but also to increase biodiversity. Available publications, peer-reviewed and any public domain, from the last 20 years, were reviewed. Several countries developed pilot case-studies and field-scale projects with more or less success, the large-scale ones being less frequent. Using floating species is less generalized than submerged species. Sediment transfer is more adequate for temporary wetlands. Hydrophyte revegetation as a restoration tool could be improved by selecting suitable wetlands, increasing focus on species biology and ecology, choosing the suitable propagation and revegetation techniques (seeding, planting). The clear negative factors which prevent the revegetation success (herbivory, microalgae, filamentous green algae, water and sediment composition) have to be considered. Policy-making and wetland restoration practices must more effectively integrate the information already known, particularly under future climatic scenarios.

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Allelopathic effects and potential active substances of Ceratophyllum demersum L. on Chlorella vulgaris Beij.

Cited by 31 publications

References 48 publications

Isolated and combined effects of a submerged macrophyte and a cladoceran on the interactions between Microcystis aeruginosa (Cyanobacteria) and Raphidocelis subcapitata (Chlorophyta)

Isolated and combined effects of a submerged macrophyte and a cladoceran on the interactions between Microcystis aeruginosa (Cyanobacteria) and Raphidocelis subcapitata (Chlorophyta)

Role of Seasons in the Fate of Dissolved Organic Carbon and Nutrients in a Large-Scale Surface Flow Constructed Wetland

Wetland Restoration with Hydrophytes: A Review

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