Cadmium metal effects physiological and anatomical Variations for aquatic plant Hydrilla verticillata (L. f.) Royle

2021 ◽  
Author(s):  
Sadiq Kadhum Lafta AL-Zurfi ◽  
Huda Hussein Mohammed AL-Tabatabai ◽  
Ali Abid Abojassim
Keyword(s):  
Aquatic Plant ◽  
Hydrilla Verticillata ◽  
Anatomical Variations ◽  
Cadmium Metal

Absorption and Translocation of Florpyrauxifen-benzyl in Ten Aquatic Plant Species

Weed Science ◽  
2021 ◽  
pp. 1-21
Author(s):  
Erika J. Haug ◽  
Khalied A. Ahmed ◽  
Travis W. Gannon ◽  
Rob J. Richardson
Keyword(s):  
North Carolina ◽  
Plant Species ◽  
Aquatic Plant ◽  
Myriophyllum Spicatum ◽  
Hydrilla Verticillata ◽  
State University ◽  
North Carolina State University ◽  
Eurasian Watermilfoil ◽  
Body Of Knowledge ◽  
Aquatic Herbicide

Abstract Additional active ingredients are needed for use in aquatic systems in order to respond to new threats or treatment scenarios, enhance selectivity, reduce use rates, and to mitigate the risk of herbicide-resistance. Florpyrauxifen-benzyl is a new synthetic auxin developed for use as an aquatic herbicide. A study was conducted at North Carolina State University, in which 10 µg L−1 of 25% radiolabeled florpyrauxifen-benzyl was applied to the isolated shoot tissue of ten different aquatic plant species in order to elucidate absorption and translocation patterns in these species. Extremely high levels of shoot absorption were observed for all species and uptake was rapid. Highest shoot absorptions were observed for crested floatingheart [Nymphoides cristata (Roxb.) Kuntze] (A192 =20 µg g−1), dioecious hydrilla [Hydrilla verticillata (L.f.) Royle] (A192 =25.3 µg g−1), variable watermilfoil (Myriophyllum heterophylum Michx.) (A192 =40.1 µg g−1) and Eurasian watermilfoil (Myriophyllum spicatum L.) (A192 =25.3 µg g−1). Evidence of translocation was observed in all rooted species tested with the greatest translocation observed in N. cristata (1.28 µg g-1 at 192 HAT). The results of this study add to the growing body of knowledge surrounding the behavior of this newly registered herbicide within aquatic plants.

scholarly journals Plectosporium tabacinum, a Pathogen of the Invasive Aquatic Weed Hydrilla verticillata in Florida

Plant Disease ◽  
1999 ◽  
Vol 83 (1) ◽  
pp. 24-28 ◽  
Author(s):  
M. L. Smither-Kopperl ◽  
R. Charudattan ◽  
R. D. Berger
Keyword(s):  
Aquatic Plant ◽  
Tap Water ◽  
Water Pressure ◽  
Plant Cells ◽  
Hydrilla Verticillata ◽  
Spring Water ◽  
Aquatic Weed ◽  
Acid Fuchsin ◽  
Inoculum Concentration ◽  
Submerged Aquatic Plant

Plectosporium tabacinum, the anamorph of Plectosphaerella cucumerina, was isolated in 1996 from Hydrilla verticillata (hydrilla), an invasive aquatic weed in Florida. P. tabacinum, applied as a suspension of conidia, was pathogenic to hydrilla shoots maintained in aqueous solutions in test tubes. Koch's postulates were fulfilled in several repeated experiments. Infected shoots became slightly chlorotic within 24 h after inoculation. Infected leaves remained intact and were supported by water pressure but collapsed upon removal from water. Histological studies of leaves stained with malachite green and acid fuchsin revealed fungal hyphae within plant cells. The disease developed over a range of temperatures from 15 to 30°C. At 25°C, symptoms were most severe in 5% Hoagland's solution, followed by river water, deionized water, 0.5% Hoagland's, tap water, and spring water. Disease severity increased as inoculum concentration was increased from 105 to 107 conidia ml-1. This is the first report of P. tabacinum as a pathogen of hydrilla, a fully submerged aquatic plant species.

scholarly journals Complex phyllosphere microbiome aids in the establishment of the invasive macrophyte Hydrilla verticillata (L.) under conditions of nitrogen scarcity

2021 ◽  
Author(s):  
Jiří Bárta ◽  
Caio Cesar Pires de Paula ◽  
Eliška Rejmánková ◽  
Qiang Lin ◽  
Iva Kohoutová ◽  
...  
Keyword(s):  
Aquatic Plant ◽  
Hydrilla Verticillata ◽  
Plant Ecology ◽  
Relative Importance ◽  
Lake Ecology ◽  
Lake Atitlan ◽  
Littoral Zones ◽  
Fungal Assemblages ◽  
Successful Invader ◽  
Generation Sequencing

AbstractDespite the low availability of nitrogen (N), the highly productive macrophyte Hydrilla verticillata (L.) is a successful invader of the littoral zones at lake Atitlán, Guatemala, with profound implications for lake ecology. To help answer the question of how Hydrilla, accompanied by the filamentous green alga Cladophora Kützing (Ulvophyceae), sustains fast growth under conditions of N scarcity, we studied the composition and potential biogeochemical function of the associated microbiomes. We combined results from next generation sequencing of associated bacterial and fungal assemblages with traditional microscopy-based taxonomical evaluation of algae and cyanobacteria. We focused on the presence of specific N2-fixing genera and their relative importance. Data on community composition are complemented with measurements of diazotrophic activity. The results expand our knowledge of the ecophysiology of these algae-plant-microbe consortia and suggest that several levels of biological complexity should be considered to fully understand aquatic plant ecology and the process of macrophyte invasions.

scholarly journals Jagd auf den Adlermörder — Entdeckung eines neuen Cyanotoxins

BIOspektrum ◽  
2021 ◽  
Vol 27 (6) ◽  
pp. 594-597
Author(s):  
Steffen Breinlinger ◽  
Timo H. J. Niedermeyer
Keyword(s):  
United States ◽  
Neurological Disease ◽  
Aquatic Plant ◽  
Hydrilla Verticillata ◽  
The United States ◽  
Bald Eagle ◽  
Invasive Aquatic Plant

AbstractHunting down the eagle killer: Vacuolar myelinopathy is a neurological disease affecting wildlife — including the iconic bald eagle — in the United States. Its cause has been elusive for decades, but its occurrence has been linked to the cyanobacterium Aetokthonos hydrillicola colonizing the invasive aquatic plant Hydrilla verticillata. In a recent study, we found that A. hydrillicola produces a novel highly toxic biindole alkaloid (aetokthonotoxin), and proved that it is causing the disease.

Unusual polyamines in aquatic plants: the occurrence of homospermidine, norspermidine, thermospermine, norspermine, aminopropylhomospermidine, bis(aminopropyl)ethanediamine, and methylspermidine

1998 ◽  
Vol 76 (1) ◽  
pp. 130-133 ◽  
Author(s):  
Koei Hamana ◽  
Masaru Niitsu ◽  
Keijiro Samejima
Keyword(s):  
Key Words ◽  
Aquatic Plants ◽  
Aquatic Plant ◽  
Hydrilla Verticillata ◽  
First Report ◽  
Brasenia Schreberi ◽  
Water Chestnut ◽  
The Family

Four aquatic plants were tested for the occurrence of unusual polyamines. The leaves of the aquatic plants tested ubiquitously contained homospermidine in addition to usual polyamines such as diaminopropane, putrescine, cadaverine, spermidine, spermine, and agmatine. Brasenia schreberi and Nuphar japonicum belonging to the family Nymphaeaceae contained aminopropylhomospermidine. Norspermidine and norspermine were detected in the blackweed Hydrilla verticillata belonging to Hydrocharitaceae. Thermospermine was detected in Brasenia schreberi. A novel tetraamine, N,N'-bis(3-aminopropyl)-1,2-ethanediamine (NH2(CH2)3NH(CH2)2NH(CH2)3NH2), was discovered in the aquatic plant Nuphar japonicum. This is the first report of the occurrence of N4-methylspermidine (NH2(CH2)3N(CH3)(CH2)4NH2) in the water chestnut Trapa natas belonging to the family Hydrocaryaceae. Key words: aquatic plants, polyamine, bis(aminopropyl)ethandiamine, methylspermidine.

scholarly journals Aquatic plant community in porto primavera reservoir

2014 ◽  
Vol 32 (3) ◽  
pp. 467-473 ◽  
Author(s):  
R.L.C.M. Pitelli ◽  
R.A. Pitelli ◽  
C.J. Rodrigues ◽  
J.H.P. Dias
Keyword(s):  
Cluster Analysis ◽  
Aquatic Plants ◽  
Water Body ◽  
Eichhornia Crassipes ◽  
Aquatic Plant ◽  
Hydrilla Verticillata ◽  
The Other ◽  
Frequency Of Occurrence ◽  
Eichhornia Azurea ◽  
Large Populations

Aiming to identify the populations of aquatic plants present in the Porto Primavera reservoir and evaluate the behavior of Hydrilla verticillata colonization of this water body a survey was carried out in 2007. The data was based on presence or absence, only were assessed the presence or absence of the species and the data were subjected to cluster analysis to establish differences in distribution and occurrence of populations. The community of aquatic plants showed 24 species distributed in 16 botanical families. Cyperaceae and Pontederiaceae were the most representative in terms of species richness. The submerged macrophyte Hydrilla verticillata showed the highest frequency of occurrence in the water body, showing a different behavior from the other populations of the water body. Species like Eichhornia crassipes, Eichhornia azurea, Typha dominguensis and Oxycaryum cubense also showed different behavior in relation to other populations within the community, forming large populations in lagoons and backwater areas.

scholarly journals AQUATIC PLANT (HYDRILLA VERTICILLATA) ROLES IN BIOACCUMULATION OF HEAVY METALS

2020 ◽  
Vol 51 (2) ◽  
pp. 574-584
Author(s):  
Al-Zurfi & Al-Tabatabai
Keyword(s):  
Heavy Metals ◽  
Aquatic Plant ◽  
Removal Rate ◽  
Hydrilla Verticillata ◽  
Bioaccumulation Factor ◽  
Lead Removal ◽  
Removal Ratio ◽  
Cadmium And Lead

The current study was aimed to test the ability of Hydrilla verticillata plant ability to accumulated of cadmium and lead in its tissues. The plant was treated with different concentrations of cadmium (1,2,4,8) ppm and lead (0.5,5,10,20) ppm for 21 days'. The concentration of metals was measured in plant and water, Bioaccumulation factor and removal ratio were also measured during days (1,7,14,21), as well as measured biomass and length of the plant were measured at the end of the experiment. The results were shown that the highest cadmium and lead removal rate were (77, 88) % at concentration (4, 10) ppm during (21, 7) days, respectively, also the bioaccumulation factor (BCF) of the two metals were (21639 and 45467) at concentrations (4 and 0.5) ppm during the 21st day of the experiment respectively. The biomass of plant in treated aquarium with different concentrations of cadmium showed a decrease during the experimental days, while increased in biomass of plant treated aquarium with different concentrations of lead. The length rate of the plant was significantly reduced in the plant that treated with cadmium but significant increase in plant treated with lead compared to the control.

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