Mycosporine-like amino acids and related Gadusols: biosynthesis, acumulation, and UV-protective functions in aquatic organisms.

@article{Shick2002MycosporinelikeAA,
  title={Mycosporine-like amino acids and related Gadusols: biosynthesis, acumulation, and UV-protective functions in aquatic organisms.},
  author={J. Malcolm Shick and Walter C. Dunlap},
  journal={Annual review of physiology},
  year={2002},
  volume={64},
  pages={
          223-62
        }
}
  • J. ShickW. Dunlap
  • Published 2002
  • Environmental Science, Biology
  • Annual review of physiology
Organisms living in clear, shallow water are exposed to the damaging wavelengths of solar ultraviolet radiation (UVR) coincident with the longer wavelengths of photosynthetically available radiation (PAR) also necessary for vision. With the general exception of bacteria, taxonomically diverse marine and freshwater organisms have evolved the capacity to synthesize or accumulate UV-absorbing mycosporine-like amino acids (MAAs), presumably for protection against environmental UVR. This review… 

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References

SHOWING 1-10 OF 195 REFERENCES

UV absorption by mycosporine-like amino acids in Phaeocystis antarctica Karsten induced by photosynthetically available radiation

Quantitative estimates of UV screening by MAAs are attributed to elevated MAA concentrations and increased diameter at high light, and the relative fluorescence yield for chlorophyll a was low in the UV region compared to the visible region, implying that absorbed UV radiation is transferred inefficiently to chlorophylla in the reaction center.

Natural ultraviolet radiation and photosynthetically active radiation induce formation of mycosporine-like amino acids in the marine macroalga Chondrus crispus (Rhodophyta)

While shinorine accumulation was much more stimulated by UVR, the content of all other MAAs was more affected by high PAR, indicating an MAA-specific induction triggered by Uvr or PAR.

Induction of mycosporine-like amino acids (MAAs) in cyanobacteria by solar ultraviolet-B radiation.

SYNTHESIS OF MYCOSPORINE‐LIKE AMINO ACIDS IN CHONDRUS CRISPUS (FLORIDEOPHYCEAE) AND THE CONSEQUENCES FOR SENSITIVITY TO ULTRAVIOLET B RADIATION

Changes in chlorophyll fluorescence (Fv/Fm and effective quantum yield, φII) indicated that PSII function was inhibited during the initial stage of acclimation but gradually improved with time, indicating an incomplete protection of photosynthetic and growth‐related processes.

Mycosporine-like amino acids in the marine dinoflagellate Gyrodinium dorsum: induction by ultraviolet irradiation.

  • M. KlischD. Häder
  • Environmental Science
    Journal of photochemistry and photobiology. B, Biology
  • 2000

Survey of mycosporine-like amino acid compounds in Antarctic marine organisms: Potential protection from ultraviolet exposure

Widespread occurrence of MAAs in Antarctic marine organisms is confirmed and suggests that these species have some degree of natural biochemical protection from UV exposure.

Antarctic krill (Euphausia superba) acquire a UV-absorbing mycosporine-like amino acid from dietary algae.

Mycosporine‐like amino acids as osmotic solutes in a community of halophilic cyanobacteria

Large concentrations of mycosporine‐like amino acids (MAAs) were found in a community of unicellular cyanobacteria inhabiting a gypsum crust developing on the bottom of a hypersaline saltern pond in

Two new UV-absorbing mycosporine-like amino acids from the sea anemoneAnthopleura elegantissima and the effects of zooxanthellae and spectral irradiance on chemical composition and content

Using a novel application of reverse-phase high performance liquid chromatography, it is found that the temperate sea anemoneAnthopleura elegantissima contains four major MAAs: shinorine, porphyra-334, and two new compounds, mycosporine-taurine and mycosporaine-2 glycine.
...