Response of the green alga Oophila sp., a salamander endosymbiont, to a PSII-inhibitor under laboratory conditions.

@article{Baxter2014ResponseOT,
  title={Response of the green alga Oophila sp., a salamander endosymbiont, to a PSII-inhibitor under laboratory conditions.},
  author={Leilan R Baxter and R. Brain and J. Rodr{\'i}guez-Gil and Alan J. Hosmer and K. Solomon and M. Hanson},
  journal={Environmental toxicology and chemistry},
  year={2014},
  volume={33 8},
  pages={
          1858-64
        }
}
In a rare example of autotroph-vertebrate endosymbiosis, eggs of the yellow-spotted salamander (Ambystoma maculatum) are colonized by a green alga (Oophila sp.) that significantly enhances salamander development. Previous studies have demonstrated the potential for impacts to the salamander embryo when growth of the algae is impaired by exposure to herbicides. To further investigate this relationship, the authors characterized the response of the symbiotic algae (Oophila sp.) alone to the… Expand
Optimization of culturing conditions for toxicity testing with the alga Oophila sp. (Chlorophyceae), an amphibian endosymbiont.
TLDR
Overall, the present study shows that screening for direct effects of contaminants on the algal symbiont without the presence of the host salamander is possible under certain laboratory conditions. Expand
Effects of atrazine on egg masses of the yellow-spotted salamander (Ambystoma maculatum) and its endosymbiotic alga (Oophila amblystomatis).
TLDR
Development of A. maculatum embryos was not affected by exposure to atrazine at concentrations and durations exceeding those found in the environment, and growth inhibition values in the 96-h growth inhibition test were generally greater than those reported for standard algal test species. Expand
Phylogeny of the egg-loving green alga Oophila amblystomatis (Chlamydomonadales) and its response to the herbicides atrazine and 2,4-D
TLDR
The nuclear SSU rRNA gene was used to characterize two well-supported Oophila clades that include lineages identified from past studies in addition to new isolates from the current study, and recommends a revision of the current taxonomy of O. amblystomatis. Expand
Examining the Taxonomic Identity of the Green Alga Oophila Amblystomatis ( Chlamydomonadales ) , the Biogeography of its Symbiont Ambystoma Maculatum ( Amphibia ) , and the Toxic Response of the Green Alga to Two Agricultural Herbicides
The yellow spotted salamander (Ambystoma maculatum) shares a unique endosymbiotic relationship with the unicellular green alga Oophila amblystomatis. Though a number of studies have isolated andExpand
Growth Recovery of Lemna gibba and Lemna minor Following a 7-Day Exposure to the Herbicide Diuron
TLDR
Investigating the potential of two duckweed species to recover from a 7-day exposure to different concentrations of the herbicide diuron suggests that recovery is possible for primary producers at environmentally relevant concentrations considered significant in ecological risk assessment. Expand
Lichen microalgae are sensitive to environmental concentrations of atrazine
TLDR
It is concluded that environmental concentrations of atrazine could modify population dynamics probably through a shift in reproduction strategies of these organisms, a breakthrough in the use of lichen microalgae in the assessment of micropollution effects on biodiversity. Expand
Effects of Atrazine in Fish, Amphibians, and Reptiles: An Analysis Based on Quantitative Weight of Evidence
TLDR
The WoE showed that atrazine might affect biomarker-type responses, such as expression of genes and/or associated proteins, concentrations of hormones, and biochemical processes, at concentrations sometimes found in the environment, but these effects were not translated to adverse outcomes in terms of apical endpoints. Expand
Aquatic hazard assessment of MON 0818, a commercial mixture of alkylamine ethoxylates commonly used in glyphosate-containing herbicide formulations. Part 1: Species sensitivity distribution from laboratory acute exposures.
The sensitivity of 15 aquatic species, including primary producers, benthic invertebrates, cladocerans, mollusks, and fish, to MON 0818, a commercial surfactant mixture of polyoxyethylene tallowExpand
Effects of atrazine on fish, amphibians, and reptiles: update of the analysis based on quantitative weight of evidence
TLDR
The new updated QWoE analysis concluded that atrazine does not adversely affect fish, amphibians, and reptiles, at environmentally relevant concentrations (<100 µg atrazin/L), which is consistent with the previous conclusions. Expand
Assessing the risk of pesticides to small streams in Southwestern Ontario using high frequency water sampling
Funding for this project was provided by the Food from Thought research program at the University of Guelph, which is funded by the Canada First Research Excellence Fund. An NSERC Discovery GrantExpand
...
1
2
...

References

SHOWING 1-10 OF 55 REFERENCES
OXYGEN UTILIZATION IN THE SYMBIOSIS OF EMBRYOS OF THE SALAMANDER, AMBYSTOMA MACULATUM AND THE ALGA, OOPHILA AMBLYSTOMATIS
TLDR
Oxygen consumption measurements were made on embryos of the salamander, Ambystoma maculatum, which develop within a gelatinous envelope usually inhabited by a unicellular green alga, Oophila amblystomatis, and numerous protozoa and bacteria, to mean that algal oxygen production is not sufficient to meet the requirements of the heterotrophic inhabitants of the envelope, and therefore could not provide a surplus to the embryo. Expand
Intracellular invasion of green algae in a salamander host
TLDR
The invasion of algae into salamander host tissues and cells represents a unique association between a vertebrate and a eukaryotic alga, with implications for research into cell–cell recognition, possible exchange of metabolites or DNA, and potential congruence between host and symbiont population structures. Expand
Acid Water Interferes with Salamander–Green Algae Symbiosis during Early Embryonic Development
TLDR
It is concluded that chronic exposure to acidic breeding ponds had a profound effect on the microenvironment of developing A. maculatum embryos, which resulted in an elevation of potentially harmful metabolic end products and inhibited growth. Expand
Characterization of the adaptation response ofAnacystis nidulans to growth in the presence of sublethal doses of herbicide
TLDR
Cells of the cyanobacterium,Anacystis nidulans, were cultured in the presence of sublethal doses of the herbicides DCMU and terbutryn, showing consistent with the hypothesis that herbicide treatment impaired electron transport, but that function was restored by the adaptation response. Expand
Symbioses between salamander embryos and green algae
TLDR
Earlier research on this symbiosis between Ambystoma maculatum embryos and green algae is summarized and gaps in understanding are emphasized and various research avenues are suggested to address these unanswered questions. Expand
The effects of atrazine on spotted salamander embryos and their symbiotic alga
TLDR
Results indicate that atrazine exposure affected spotted salamanders both directly by causing pathologies and mortality in embryos and indirectly by eliminating their symbiotic alga. Expand
Growth responses of Nannochloris oculata Droop and Phaeodactylum tricornutum Bohlin to the herbicide atrazine as influenced by light intensity and temperature
TLDR
The growth rates of Nannochloris oculata Droop and Phaeodactylum tricornutum Bohlin were determined for 27 combinations of temperature, light intensity, and atrazine concentration to emphasize the important impact of herbicides on nontarget organisms such as algae. Expand
Observations on the Eggs of Ambystoma Maculatum with Especial Reference to the Green Algae Found Within the Egg Envelopes
TLDR
Algae probably "helps provide oxygen for the developing embryos in the presence of light and robs them of it in darkness" as well as on the possibility of a symbiotic relationship. Expand
S-metolachlor pulse exposure on the alga Scenedesmus vacuolatus: effects during exposure and the subsequent recovery.
TLDR
It is suggested that peak exposure to S-metolachlor may affect the growth of sensitive alga in surface waters, considering that the effects extend beyond the period of exposure. Expand
Effect of pulse herbicidal exposure on Scenedesmus vacuolatus: A comparison of two photosystem II inhibitors
TLDR
The rapid onset of effects of isoproturon on the growth of the alga during exposure suggests that a single pulse to this herbicide is likely to induce greater effects than an atrazine pulse at the same concentration, even if these effects are reversible. Expand
...
1
2
3
4
5
...