Enumeration and Characterization of Bacterial Colonists of a Submersed Aquatic Plant, Eurasian Watermilfoil (
            <i>Myriophyllum spicatum</i>
            L.)

Chand, Tara; Harris, R. F.; Andrews, John H.

doi:10.1128/aem.58.10.3374-3379.1992

Cited by 15 publications

(3 citation statements)

References 13 publications

(9 reference statements)

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“…Depletion of TNT was not evident in the inorganic nutrient solution control. Because microorganisms are associated with M. spicatum [36], it is difficult to determine the relative contribution of plants and attached epiphytic microorganisms to the observed TNT depletion. However, microscopic observations of plant sections did not reveal a significant amount of epiphytic biomass compared to the plant biomass.…”

Section: Role Of Plants In the Transformation Of Tntmentioning

confidence: 99%

Transformaton of 2,4,6-Trinitrotoluene by the Aquatic Plant Myriophyllum Spicatum

Pavlostathis¹,

Comstock²,

Jacobson³

et al. 1998

Environ Toxicol Chem

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Abstract-The ability of the aquatic plant Eurasian Watermilfoil (Myriophyllum spicatum) to transform 2,4,6-trinitrotoluene (TNT) was investigated in a series of batch assays. The TNT was added to plant cultures in single and multiple consecutive additions, at various initial concentrations, to determine its transformation kinetics, identify products formed, evaluate phytotoxic effects, and to determine the effect of light deprivation on the TNT transformation process. Rapid disappearance of TNT from the plant culture media was observed. The TNT disappearance rate was a function of both plant and TNT concentration (i.e., followed mixed, secondorder kinetics). The TNT transformation occurred only in the presence of plants and was inhibited by the addition of sodium azide. Phytotoxicity leading to plant chlorosis was observed in batch plant cultures with an initial TNT concentration above 5.9 M. Reductive transformation of TNT to aminodinitrotoluenes and lower levels of hydroxylaminodinitrotoluene and diaminonitrotoluenes detected in the plant culture media accounted for less than 10 to 20% of the total TNT mass added. Extraction of plant material at the end of batch incubations when all TNT was depleted from the media yielded low levels of TNT and aminodinitrotoluenes and accounted for only 3.4% of the initially added TNT mass. Light deprivation decreased both the rate and extent of the reductive transformation of TNT.

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Section: Role Of Plants In the Transformation Of Tntmentioning

confidence: 99%

Transformaton of 2,4,6-Trinitrotoluene by the Aquatic Plant Myriophyllum Spicatum

Pavlostathis¹,

Comstock²,

Jacobson³

et al. 1998

Environ Toxicol Chem

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“…Whether or not such chemical interactions between plants and bacteria are important for biofilm density and community composition on aquatic macrophytes is unknown. The only study addressing microbial diversity on M. spicatum showed that the biofilm was dominated by gammaproteobacteria and members of the CFB group [ 32 ]. Bacterial epiphytes of C. aspera have not been described before.…”

Section: Introductionmentioning

confidence: 99%

Epiphytic bacterial community composition on two common submerged macrophytes in brackish water and freshwater

et al. 2008

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Background: Plants and their heterotrophic bacterial biofilm communities possibly strongly interact, especially in aquatic systems. We aimed to ascertain whether different macrophytes or their habitats determine bacterial community composition. We compared the composition of epiphytic bacteria on two common aquatic macrophytes, the macroalga Chara aspera Willd. and the angiosperm Myriophyllum spicatum L., in two habitats, freshwater (Lake Constance) and brackish water (Schaproder Bodden), using fluorescence in situ hybridization. The bacterial community composition was analysed based on habitat, plant species, and plant part.

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“…Different methods have been utilized to conduct research on the epiphytic bacterial communities of submerged macrophytes. Chand et al (1992) used a culture dependent analysis to study species of Acinetobacter, Cytophaga, Flavobacterium, Moraxella, Pseudomonas and/or Alcaligenes, and Vibrio/Aeromonas in the epiphytic bacterial communities of Eurasian watermilfoil (Myriophyllum spicatum L.). He et al (2012) confirmed that the epiphytic bacterial communities of Vallisneria natans and Hydrilla verticillata appeared to be diverse and host-specific using terminal restriction fragment length polymorphism and analyses of clone library.…”

Section: Introductionmentioning

confidence: 99%

Community Structure and Function of Epiphytic Bacteria Associated With Myriophyllum spicatum in Baiyangdian Lake, China

Sun

Wang

et al. 2021

Front. Microbiol.

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Epiphytic bacteria on the surfaces of submerged macrophytes play important roles in the growth of the host plant, nutrient cycling, and the conversion of pollutants in aquatic systems. A knowledge of the epiphytic bacterial community structure could help us to understand these roles. In this study, the abundance, diversity, and functions of the epiphytic bacterial community of Myriophyllum spicatum collected from Baiyangdian Lake in June, August, and October 2019 were studied using quantitative PCR (qPCR), high-throughput sequencing, and the prediction of functions. An analysis using qPCR showed that the epiphytic bacteria were the most abundant in October and the least abundant in August. High-throughput sequencing revealed that Proteobacteria, Gammaproteobacteria, and Aeromonas were the dominant phylum, class, and genus in all the samples. The common analyses of operational taxonomic units (OTUs), NMDS, and LDA showed that the epiphytic bacterial communities were clustered together based on the seasons. The results of a canonical correlation analysis (CCA) showed that the key water quality index that affected the changes of epiphytic bacterial community of M. spicatum was the total phosphorus (TP). The changes in abundance of Gammaproteobacteria negatively correlated with the TP. Predictive results from FAPROTAX showed that the predominant biogeochemical cycle functions of the epiphytic bacterial community were chemoheterotrophy, nitrate reduction, and fermentation. These results suggest that the epiphytic bacterial community of M. spicatum from Baiyangdian Lake varies substantially with the seasons and environmental conditions.

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Enumeration and Characterization of Bacterial Colonists of a Submersed Aquatic Plant, Eurasian Watermilfoil ( Myriophyllum spicatum L.)

Cited by 15 publications

References 13 publications

Transformaton of 2,4,6-Trinitrotoluene by the Aquatic Plant Myriophyllum Spicatum

Transformaton of 2,4,6-Trinitrotoluene by the Aquatic Plant Myriophyllum Spicatum

Epiphytic bacterial community composition on two common submerged macrophytes in brackish water and freshwater

Community Structure and Function of Epiphytic Bacteria Associated With Myriophyllum spicatum in Baiyangdian Lake, China

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