Wavelength-dependent induction of UV-absorbing mycosporine-like amino acids in the red alga Chondrus crispus under natural solar radiation

Kräbs, Gudrun; Bischof, Kai; Hanelt, Dieter; Karsten, Ulf; Wiencke, Christian

doi:10.1016/s0022-0981(01)00380-x

Cited by 65 publications

(59 citation statements)

References 39 publications

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“…Previous research has often found a correlation between ambient UV-R and MAA concentration (Banaszak et al 1998;Franklin et al 2001;Hoyer et al 2001;Krabs et al 2002;Apprill & Lesser 2003;Huovinen et al 2004). This includes correlating algal depth and ambient UV-R intensities with MAA concentration (Bischof et al 2000;Hoyer 2001), correlating geographic variation in ambient UV-R and MAA concentrations (Huovinen 2004), or correlating temporal changes in MAA concentration and ambient UV-R Apprill & Lesser 2003).…”

Section: Discussionmentioning

confidence: 95%

Variation in sunscreen compounds (mycosporine‐like amino acids) for marine species along a gradient of ultraviolet radiation transmission within doubtful sound, New Zealand

Lamare¹,

Lesser²,

Barker³

et al. 2004

New Zealand Journal of Marine and Freshwater Research

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We examined the response of four species of New Zealand marine algae (Ecklonia radiata, Apophlaea lyallii, Rhodymenia spp., Ulva lactuca) and a sea urchin (Evechinus chloroticus) to spatial variation in ultraviolet radiation (UV-R) by examining the concentration of UV-R absorbing compounds known as mycosporine-like amino acids (MAAs). The purpose was to understand how, and the degree to which, local marine species could potentially respond to any future increases in incident UV-R in the New Zealand marine environment. The research was undertaken in Doubtful Sound, where we observed a gradient of water column UV-R transmission along the 40 km length of the fiord. We examined spatial differences in MAAs along the UV-B gradient in the macrophytes and temporal changes in MAAs in sea urchin gonads. Among the algae, thallus MAA concentrations (nmol mg -1 protein) ranged from 12.5 to 87.8 in E. radiata, from 433.1 to 1446.4 in A. lyallii, 12.7 Rhodymenia spp., but were not detected in U. lactuca. For E. chloroticus, gonadal MAA concentrations ranged from 83.9 to 224.3 nmol mg -1 protein spatially, and over the year from 1.85 to 14.12 nmol mg -1 dry weight (DW) depending on site and gametogenic cycle. Laboratory manipulations indicated that concentrations of MAAs in E. chloroticus gonads and eggs are influenced by diet. MAA concentration could be correlated with UV-B intensities in two of the algal species. E. chloroticus MAA concentrations could also be correlated with UV-B transmission, which we concluded was a reflection of the greater ingestion and accumulation of MAArich macrophytes at those sites where higher ambient UV-R induced greater MAA concentrations to occur in the algae. Given this, we suggest that one response of marine species to increases in UV-B would be an increase in the synthesis and/or accumulation of MAAs for photoautotrophs and a dietary accumulation of those MAAs in E. chloroticus, an important herbivore in this system.

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Section: Discussionmentioning

confidence: 95%

Variation in sunscreen compounds (mycosporine‐like amino acids) for marine species along a gradient of ultraviolet radiation transmission within doubtful sound, New Zealand

Lamare¹,

Lesser²,

Barker³

et al. 2004

New Zealand Journal of Marine and Freshwater Research

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“…Although experimental evidence for a particular trigger mechanism as well as details for the biosynthetic pathway for individual MAAs are still missing, it is reasonable to assume that a signal transduction pathway must be involved in the overall process leading to high MAA concentrations. Due to the different types of MAA induction patterns the presence of various photoreceptors, most probably between the blue light and UVB wavelengths, have to be taken into consideration (Krä bs et al 2002).…”

Section: Mycosporine-like Amino Acids (Maa)mentioning

confidence: 99%

Ultraviolet radiation shapes seaweed communities

Bischof

Gómez

Molis

et al. 2006

Rev Environ Sci Biotechnol

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202

109

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Stratospheric ozone depletion and the concomitant increase in irradiance of ultraviolet-B radiation (UVB) at the earth's surface represent major threats to terrestrial and aquatic ecosystems. In costal rocky shore environments, seaweeds constitute a group of organisms of particular significance to ecosystem function. Thus, impairment of seaweed performance by UVB-exposure may result in severe changes in the functioning of coastal ecosystems. Here we present our view on how UVB radiation affects seaweed physiology and ecology and, thus, shapes the coastal environment by affecting the spatial, species and functional structure of seaweed communities.

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“…To date, more than 35 MAAs have been reported from marine organisms such as cyanobacteria, algae, and vertebrate and invertebrate animals (Becker et al, 2016). MAAs are most abundant in Rhodophyta (red algae) compared to Chlorophyta (green algae) and Phaeophyta (brown algae) macroalgal species (Karentz et al, 1991c;Hoyer et al, 2001;Kräbs et al, 2002;Sinha et al, 2007).…”

Section: Research Articlementioning

confidence: 99%

Mycosporine-Like Amino Acids (MAAs) Profile of Two Marine Red Macroalgae, Gelidium sp. and Ceramium sp.

Pandey

Rajneesh

et al. 2017

Int J Appl Sci Biotechnol

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Macroalgae have evolved different strategies to mitigate the damaging effects of solar ultraviolet radiation (UVR), including accumulation of photoprotective compounds such as mycosporine-like amino acids (MAAs). MAAs are secondary metabolites, synthesized by a large variety of organisms including macroalgae, phytoplanktons, cyanobacteria, lichen, fungi and some marine animals. MAAs act as photoprotectants and antioxidants. In the present investigation, MAAs profile of methanolic extracts of two marine red algae Gelidium sp. and Ceramium sp., collected from their natural environment, was studied. High-performance liquid chromatography (HPLC) and UV-Vis spectrometry analyses were used to reveal different MAAs profile in the extracts obtained from these two red algae. The MAAs isolated by HPLC were identified as shinorine (λmax= 333.5 nm), porphyra-334 (λmax=332.3 nm) and palythine (λmax=317.9 nm) having retention times (RT) 1.26, 2.12 and 3.64 min, respectively, in the extract obtained from Gelidium sp. Similarly, shinorine (λmax=332.3 nm), porphyra-334 (λmax=333.5 nm) and palythinol (λmax=332.5 nm) with RT 1.27, 2.13 and 4.61 min, respectively, were identified in the extract obtained from Ceramium sp. This study revealed that Gelidium sp. and Ceramium sp. could serve as potential source for economical exploration of MAAs in pharmaceutical sciences.

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Wavelength-dependent induction of UV-absorbing mycosporine-like amino acids in the red alga Chondrus crispus under natural solar radiation

Cited by 65 publications

References 39 publications

Variation in sunscreen compounds (mycosporine‐like amino acids) for marine species along a gradient of ultraviolet radiation transmission within doubtful sound, New Zealand

Variation in sunscreen compounds (mycosporine‐like amino acids) for marine species along a gradient of ultraviolet radiation transmission within doubtful sound, New Zealand

Ultraviolet radiation shapes seaweed communities

Mycosporine-Like Amino Acids (MAAs) Profile of Two Marine Red Macroalgae, Gelidium sp. and Ceramium sp.

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