Time dependent uptake, bioaccumulation and biotransformation of cell free crude extract microcystins from Lake Amatitlán, Guatemala by Ceratophyllum demersum, Egeria densa and Hydrilla verticillata

Toxicon ◽  
2015 ◽  
Vol 105 ◽  
pp. 62-73 ◽  
Author(s):  
Claudia Suseth Romero-Oliva ◽  
Valeska Contardo-Jara ◽  
Stephan Pflugmacher
Keyword(s):  
Crude Extract ◽  
Hydrilla Verticillata ◽  
Time Dependent ◽  
Ceratophyllum Demersum ◽  
Egeria Densa

scholarly journals Defense Mechanisms of Two Pioneer Submerged Plants during Their Optimal Performance Period in the Bioaccumulation of Lead: A Comparative Study

2018 ◽  
Vol 15 (12) ◽  
pp. 2844 ◽  
Author(s):  
Dian Li ◽  
Linglei Zhang ◽  
Min Chen ◽  
Xiaojia He ◽  
Jia Li ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Protein Content ◽  
Defense Mechanisms ◽  
Hydrilla Verticillata ◽  
Optimal Performance ◽  
Ceratophyllum Demersum ◽  
Contaminated Water ◽  
Submerged Plants ◽  
Significant Difference ◽  
Mda Content

Ceratophyllum demersum L. and Hydrilla verticillata (L.f.) Royle, two pioneer, submerged plants, effectively remove heavy metals from contaminated water. The present work evaluates the bioaccumulation and defense mechanisms of these plants in the accumulation of lead from contaminated water during their optimal performance period. C. demersum and H. verticillata were investigated after 14 days of exposure to various lead concentrations (5–80 μM). The lead accumulation in both C. demersum and H. verticillata increased with an increasing lead concentration, reaching maximum values of 2462.7 and 1792 mg kg−1 dw, respectively, at 80 μM. The biomass and protein content decreased significantly in C. demersum when exposed to lead. The biomass of H. verticillata exposed to lead had no significant difference from that of the controls, and the protein content increased for the 5–10 μM exposure groups. The malondialdehyde (MDA) content and superoxide dismutase (SOD), peroxidase (POD), and polyphenol oxidase (PPO) activities were much higher in C. demersum, suggesting considerable damage from lipid peroxidation and sensitivity to lead stress. Enzyme inhibition and inactivation were also observed in C. demersum at high lead concentrations (40–80 μM). The excellent growth status, low damage from lipid peroxidation, and high activity of catalase (CAT) and phenylalanine ammonia-lyase (PAL) observed in H. verticillata illustrate its better tolerance under the same lead stress.

Plant Screening and Comparison of Ceratophyllum demersum and Hydrilla verticillata for Cadmium Accumulation

2004 ◽  
Vol 73 (3) ◽  
Author(s):  
S. Bunluesin ◽  
M. Kruatrachue ◽  
P. Pokethitiyook ◽  
G. R. Lanza ◽  
E. S. Upatham ◽  
...  
Keyword(s):  
Hydrilla Verticillata ◽  
Cadmium Accumulation ◽  
Ceratophyllum Demersum

scholarly journals Arsenic, Zinc, and Aluminium Removal from Gold Mine Wastewater Effluents and Accumulation by Submerged Aquatic Plants (Cabomba piauhyensis,Egeria densa, andHydrilla verticillata)

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Ahmad Farid Abu Bakar ◽  
Ismail Yusoff ◽  
Ng Tham Fatt ◽  
Faridah Othman ◽  
Muhammad Aqeel Ashraf
Keyword(s):  
Waste Water ◽  
Plant Species ◽  
Aquatic Plants ◽  
Mine Drainage ◽  
Plant Biomass ◽  
Mine Waste ◽  
Hydrilla Verticillata ◽  
The Other ◽  
Egeria Densa ◽  
Submerged Aquatic Plant

The potential of three submerged aquatic plant species (Cabomba piauhyensis, Egeria densa, andHydrilla verticillata) to be used for As, Al, and Zn phytoremediation was tested. The plants were exposed for 14 days under hydroponic conditions to mine waste water effluents in order to assess the suitability of the aquatic plants to remediate elevated multi-metals concentrations in mine waste water. The results show that theE. densaandH. verticillataare able to accumulate high amount of arsenic (95.2%) and zinc (93.7%) and resulted in a decrease of arsenic and zinc in the ambient water. On the other hand,C. piauhyensisshows remarkable aluminium accumulation in plant biomass (83.8%) compared to the other tested plants. The ability of these plants to accumulate the studied metals and survive throughout the experiment demonstrates the potential of these plants to remediate metal enriched water especially for mine drainage effluent. Among the three tested aquatic plants,H. verticillatawas found to be the most applicable (84.5%) and suitable plant species to phytoremediate elevated metals and metalloid in mine related waste water.

scholarly journals Comparison of generic and proprietary aquatic herbicides for control of invasive vegetation; part 3 : submersed plants

2021 ◽  
Author(s):  
Christopher Mudge ◽  
Kurt Getsinger
Keyword(s):  
Active Ingredient ◽  
Myriophyllum Spicatum ◽  
Hydrilla Verticillata ◽  
Growth Chamber ◽  
Small Scale ◽  
Ceratophyllum Demersum ◽  
Eurasian Watermilfoil ◽  
Severity Of Injury ◽  
Aquatic Herbicides ◽  
Generic Products

Herbicide selection is key to efficiently managing nuisance vegetation in our nation’s waterways. After selecting the active ingredient, there still remains multiple proprietary and generic products to choose from. Recent small-scale research has been conducted to compare the efficacy of these herbicides against floating and emergent species. Therefore, a series of mesocosm and growth chamber trials were conducted to evaluate subsurface applications of the following herbicides against submersed plants: diquat versus coontail (Ceratophyllum demersum L.), hydrilla (Hydrilla verticillata L.f. Royle), southern naiad (Najas guadalupensis (Sprengel) Magnus), and Eurasian watermilfoil (Myriophyllum spicatum L.); flumioxazin versus coontail, hydrilla, and Eurasian watermilfoil; and triclopyr against Eurasian watermilfoil. All active ingredients were applied at concentrations commonly used to manage these species in public waters. Visually, all herbicides within a particular active ingredient performed similarly with regard to the onset and severity of injury symptoms throughout the trials. All trials, except diquat versus Eurasian watermilfoil, resulted in no differences in efficacy among the 14 proprietary and generic herbicides tested, and all herbicides provided 43%–100% control, regardless of active ingredient and trial. Under mesocosm and growth chamber conditions, the majority of the generic and proprietary herbicides evaluated against submersed plants provided similar control.

scholarly journals ARE THE PLANTS OF THE FAMILY HYDROCHARITACEAE A NEW SOURCE OF TANNINS?

2018 ◽  
pp. 179-184
Author(s):  
Елена (Elena) Анатольевна (Аnatol'evna) Алехина (Alekhina) ◽  
Андрей (Аndrej) Николаевич (Nikolaevich) Ефремов (Efremov) ◽  
Ольга (Ol'ga) Александровна (Aleksandrovna) Емельянова (Emelyanova)
Keyword(s):  
Condensed Tannins ◽  
Statistical Processing ◽  
Hydrilla Verticillata ◽  
Urtica Dioica ◽  
Elodea Canadensis ◽  
Egeria Densa ◽  
The Family ◽  
Bidens Tripartita ◽  
Stratiotes Aloides ◽  
Leaf Tissues

The plants of the families Salicaceae, Fagaceae, Pinaceae are traditional sources of tannins. However, earlier in the leaf tissues of some marine (Enhalus, Thalassia) and freshwater (Stratiotes) genuses of the family Hydrocharitaceae, idioblasts containing condensed tannins were found. In this regard, the purpose of the study was to determine the content of tannins in the phytomass of plants of the family Hydrocharitaceae (Hydrocharis morsus-ranae, Hydrilla verticillata, Stratiotes aloides, Egeria densa, Elodea canadensis) and medicinal plants − traditional sources of tannins (Quercus robur, Urtica dioica, Bidens tripartita).As a result of the research hydrolyzed tannins has been found in Hydrocharis morsus-ranae, and a mixture of hydrolyzed and condensed tannins in Stratiotes aloides, Elodea canadensis, Egeria densa, Hydrilla verticillata. Stratiotes aloides (3.1±0.1% of dry matter) and Hydrilla verticillata (2.8±0.1%) are characterized by the greatest content of tannins, Elodea canadensis (1.1 ± 0.1%) characterized by the minimal content. The shelf life of the dried phytomass does not affect the content of tannins. Statistical processing of the results of determination of tannins in the phytomass Hydrocharis morsus-ranae, Stratiotes aloides and Elodea canadensis, performed in different years, showed their convergence.The results of these studies allow us to consider the plants of the family Hydrocharitaceae as a potential source of tannins, comparable to such official sources as Urtica dioica and Bidens tripartita.

scholarly journals The Competition between of invasive Hydrilla verticillata L.f. and native Ceratophyllum demersum L. in monocultures and mixed cultures experimental

2019 ◽  
pp. 1933-1947
Author(s):  
Sadiq Kadhum Lafta Alzurfi ◽  
Ahmed A. Motar ◽  
Furqan Y. Jawad Sharba
Keyword(s):  
Superoxide Dismutase ◽  
Competitive Advantage ◽  
Hydrilla Verticillata ◽  
Experiment Design ◽  
Mixed Cultures ◽  
Competition Experiment ◽  
Control Treatment ◽  
Ceratophyllum Demersum ◽  
Total Chlorophyll ◽  
Chlorophyll Protein

     The present study aims to assess inter-specific competition between Hydrilla verticillata and Ceratophyllum demersum. A competition experiment design has five treatment combinations to terminal shoots of C. demersum only, terminal shoots of H. verticillata only and three different treatment combinations of C. demersum and H. verticillata together. Our results showed parameters growth of C. demersum were decreased of which, total chlorophyll, protein, and biomass while Superoxide dismutase (SOD), and Catalase (CAT) enzymes increase were significantly (p<0.05) compare with control treatment. While H. verticillata were increased total chlorophyll, biomass, CAT and little increase in protein and SOD were significantly (p<0.05) compare with control treatment. Therefore, due to the competition, with the introduction of C. demersum, the performances growth of H. verticillata were increased. Based on our result, showed H. verticillata and C. demersum species were coexist, C. demersum will have a competitive advantage over H. verticillata. Therefore, this study suggests, H. verticillata could out-compete for C. demersum in many situations, that despite the similar ecology.

scholarly journals Estudo do potencial do pacu (Piaractus mesopotamicus) como agente de controle biológico de Egeria densa, E. najas e Ceratophyllum demersum

2003 ◽  
Vol 21 (spe) ◽  
pp. 53-59 ◽  
Author(s):  
D.M.Y. Miyazaki ◽  
R.A. Pitelli
Keyword(s):  
Ceratophyllum Demersum ◽  
Egeria Densa ◽  
Piaractus Mesopotamicus

Visando fornecer subsídios para elaboração de sistema de manejo integrado das grandes massas de plantas daninhas aquáticas submersas em lagos e represas, o presente trabalho teve como objetivo verificar a eficiência do pacu (Piaractus mesopotamicus) como agente de controle biológico de Egeria densa, E. najas e Ceratophyllum demersum. As espécies de plantas daninhas foram oferecidas individualmente, duas a duas e as três espécies juntas. Verificou-se que este peixe tem uma eficiência média de controle dessas plantas daninhas variando entre 28 e 100%, podendo eliminar uma massa verde dessas plantas, com a mesma quantidade de seu peso, em sete dias. A eficiência de controle diária aumentou com o tempo de predação. O pacu é mais seletivo para E. densa ou E. najas quando na presença de C. demersum. Não ocorreu alteração na eficiência de controle do pacu sobre E. densa ou E. najas em todos os tratamentos e nos três períodos estudados (três, cinco e sete dias).

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