A review: Application of allelochemicals in water ecological restoration——algal inhibition

Li, Benhang; Yin, Yijun; Kang, Lei; Feng, Li; Liu, Yongze; Du, Zhaohui; Tian, Yajun; Zhang, Liqiu

doi:10.1016/j.chemosphere.2020.128869

Cited by 66 publications

(37 citation statements)

References 96 publications

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“…Moreover, M. spicatum can secrete allelochemicals to inhibit the growth of microalgae [ 105 ]; the major components of these secondary metabolites secreted by plants are phenolic acids, fatty acids, alkaloids, terpenoids, flavonoids, etc. [ 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 ].…”

Section: Selection Of Species Most Commonly Used Speciesmentioning

confidence: 99%

“…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. The use of allelochemicals produced by macrophytes in the field of water ecological restoration has been recently reviewed by Li et al [ 106 ]. These authors even propose searching in the micro-spheroidization technology as engineering applications of allelochemicals directly in water to prevent microalgal growth.…”

Section: Selection Of Species Most Commonly Used Speciesmentioning

confidence: 99%

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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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Section: Selection Of Species Most Commonly Used Speciesmentioning

confidence: 99%

Section: Selection Of Species Most Commonly Used Speciesmentioning

confidence: 99%

Wetland Restoration with Hydrophytes: A Review

Rodrigo

2021

Plants

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“…A interferência antrópica tem contribuído sobremaneira na degradação dos corpos hídricos e a intensificação das florações de cianobactérias tem sido uma das principais alterações (PEKAR et al, 2016;HUISMAN et al, 2018). Tais eventos podem alterar a estrutura trófica e a funcionalidade local devido à desoxigenação da coluna d'água e à produção de cianotoxinas (PEKAR et al, 2016;HUISMAN et al, 2018;LI et al, 2021). As cianotoxinas podem causar a mortalidade de organismos aquáticos, alterações fisiológicas, assim como danos à saúde humana (CALADO et al, 2019;METCALF;CODD, 2020;MUNOZ et al, 2021).…”

Section: Introductionunclassified

“…Diante disso, o uso de tratamentos baseados em soluções sustentáveis torna-se de relevância por causarem menores impactos aos ambientes, além de apresentarem baixo custo, quando comparadas aos tratamentos físicos e químicos convencionais (LI et al, 2021;TAZART et al, 2021, ZHU et al, 2021. Dentre as possíveis alternativas que podem ser empregadas, estudos envolvendo o potencial alelopático de macrófitas aquáticas submersas têm demonstrado eficiência, principalmente para a inibição de cianobactérias (CHENG et al, 2008;MAREDOVÁ et al, 2021;TAZART et al, 2021;ZHU et al 2021).…”

Section: Introductionunclassified

“…Dentre as possíveis alternativas que podem ser empregadas, estudos envolvendo o potencial alelopático de macrófitas aquáticas submersas têm demonstrado eficiência, principalmente para a inibição de cianobactérias (CHENG et al, 2008;MAREDOVÁ et al, 2021;TAZART et al, 2021;ZHU et al 2021). Esta técnica é vantajosa, principalmente, visto que dependendo da concentração aplicada, não são observados efeitos de toxicidade a organismos nãoalvo (LU et al, 2017;LI et al, 2021;TAZART et al, 2021).…”

Section: Introductionunclassified

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BIOATIVIDADE ALELOPÁTICA DE EXTRATOS METANÓLICOS DE Myriophyllum aquaticum (Vell.) Verdc. SOBRE Microcystis aeruginosa Kutzing

Kitamura¹,

Silva²,

Pagioro³

et al. 2021

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trabalho licenciado sob licença Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. RESUMOMacrófitas aquáticas do gênero Myriophyllum apresentam estratégias alelopáticas para o controle do fitoplâncton e, neste contexto, a utilização de extratos produzidos a partir destas espécies na inibição de cianobactérias têm sido investigadas. Neste estudo foi avaliado o efeito inibitório do extrato metanólico de M. aquaticum sobre o crescimento celular de Microcystis aeruginosa e a produção de microcistina-LR. Exemplares de M. aquaticum foram coletadas no reservatório do rio Verde (Araucária-PR, Brasil) e após a secagem foram pulverizadas. A extração hidrometanólica (50%) foi realizada por cavitação em ultrassom, os extratos brutos foram secos e liofilizados. Foram preparadas diferentes concentrações de soluções do extrato: 0 (Controle), 1, 10, 50, 100 e 250 mg.L -1 ). Posteriormente, foram realizados inóculos de M. aeruginosa (10 6 células mL -1 ). O crescimento celular foi analisado por contagem em câmaras de Neubauer. Após nove dias de exposição, alterações no potencial fotossintético foram avaliadas pela determinação de clorofila-a. Além disso, foi realizada a quantificação de microcistina-LR por cromatografia líquida de alta eficiência. O extrato metanólico de M. aquaticum apresentou potencial inibitório sobre o crescimento de M. aeruginosa, com valores inibitórios de até 71%. Houve redução do teor de clorofila-a nas concentrações de 10 a 250 mg.L -1 . Por fim, constatou-se redução de microcistina-LR de 90 a 99% para todas as concentrações de extratos testadas. Tais resultados indicam que o extrato metanólico de M. aquaticum foi eficiente para inibir M. aeruginosa, bem como reduziu a concentração de microcistina-LR, apresentando potencial para o uso como alternativa no controle de florações de cianobactérias. PALAVRAS-CHAVE: Cianobactérias. Microcistina-LR. Soluções Baseadas na Natureza ALLELOPATHIC BIOACTIVITY OF METHANOLIC EXTRACTS OF Myriophyllum aquaticum (Vell.) Verdc. ON Microcystis aeruginosa Kutzing.

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Natural Algaecide Sphingosines Identified in Hybrid Straw Decomposition Driven by White‐Rot Fungi

Hu,

Kokoette,

et al. 2023

Advanced Science

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Harmful algal blooms (HABs), which are promoted by eutrophication and intensified by global warming, occur worldwide. Allelochemicals, which are natural chemicals derived from plants or microbes, are emerging weapons to eliminate these blooms. However, the cost and technical challenges have limited the discovery of novel antialgal allelochemicals. Herein, the decomposition of agricultural straws is manipulated by white‐rot fungi and achieved elevated antialgal efficiency. The transcriptomic analysis reveals that nutrient limitation activated fungal decomposition. By using a comparative nontarget metabolomics approach, a new type of allelochemical sphingosines (including sphinganine, phytosphingosine, sphingosine, and N‐acetylsphingosine) is identified. These novel natural algaecides exhibit superior antialgal capability, with as high as an order of magnitude lower effective concentration on blooming species than other prevalent allelochemicals. The co‐expression relationship between transcriptomic and metabolomic results indicate that sphinganine is strongly correlated with the differentially expressed lignocellulose degradation unigenes. The algal growth suppression is triggered by the activation of programmed cell death, malfunction of algal photosystem and antioxidant system, the disruption on CO2 assimilation and light absorption. The sphingosines reported here are a new category of allelochemicals in addition to the well‐known antialgal natural chemicals, which are potential species‐specific agents for HABs control identified by multi‐omics methodology.

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A review: Application of allelochemicals in water ecological restoration——algal inhibition

Cited by 66 publications

References 96 publications

Wetland Restoration with Hydrophytes: A Review

Wetland Restoration with Hydrophytes: A Review

BIOATIVIDADE ALELOPÁTICA DE EXTRATOS METANÓLICOS DE Myriophyllum aquaticum (Vell.) Verdc. SOBRE Microcystis aeruginosa Kutzing

Natural Algaecide Sphingosines Identified in Hybrid Straw Decomposition Driven by White‐Rot Fungi

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