Spatial distribution of phlorotannins and its relationship with photosynthetic UV tolerance and allocation of storage carbohydrates in blades of the kelp Lessonia spicata

Gómez, Iván; Español, Sonia; Véliz, Karina; Huovinen, Pirjo

doi:10.1007/s00227-016-2891-1

Cited by 18 publications

(27 citation statements)

References 58 publications

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“…Among different phenolic compounds, phlorotannins (eight interconnected flavonoid rings) are the group of tannins and phloroglucinols (Wang et al, 2012) that have been isolated from brown algae (15% of dry weight; Le Gall et al, 2015). These phlorotannins are reported to have antioxidant activities in the biological system (Ferrari et al, 2015; Gómez et al, 2016). Moreover, phenolics are characterized as stress compounds, which participate in defense mechanisms against biotic stresses like grazing (Coleman et al, 2007), settlement of bacteria (Lau and Qian, 2000), and abiotic stresses like UV irradiation (Coba et al, 2009) and metal toxicity (Connan and Stengel, 2011).…”

Section: An Outlook Of Metabolites: Basically What They Are?mentioning

confidence: 99%

“…Moreover, phenolics are characterized as stress compounds, which participate in defense mechanisms against biotic stresses like grazing (Coleman et al, 2007), settlement of bacteria (Lau and Qian, 2000), and abiotic stresses like UV irradiation (Coba et al, 2009) and metal toxicity (Connan and Stengel, 2011). Secondary metabolites are not directly involved in growth processes but some reports have suggested the participation of phlorotannins in regulating developmental processes in brown algae (Schoenwaelder and Wiencke, 2000; Gómez et al, 2016). Structurally, phenolic compounds have at least one phenolic ring and show strong biological activities, when halogenated (Cabrita et al, 2010).…”

Section: An Outlook Of Metabolites: Basically What They Are?mentioning

confidence: 99%

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Uncovering Potential Applications of Cyanobacteria and Algal Metabolites in Biology, Agriculture and Medicine: Current Status and Future Prospects

et al. 2017

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Cyanobacteria and algae having complex photosynthetic systems can channelize absorbed solar energy into other forms of energy for production of food and metabolites. In addition, they are promising biocatalysts and can be used in the field of “white biotechnology” for enhancing the sustainable production of food, metabolites, and green energy sources such as biodiesel. In this review, an endeavor has been made to uncover the significance of various metabolites like phenolics, phytoene/terpenoids, phytols, sterols, free fatty acids, photoprotective compounds (MAAs, scytonemin, carotenoids, polysaccharides, halogenated compounds, etc.), phytohormones, cyanotoxins, biocides (algaecides, herbicides, and insecticides) etc. Apart from this, the importance of these metabolites as antibiotics, immunosuppressant, anticancer, antiviral, anti-inflammatory agent has also been discussed. Metabolites obtained from cyanobacteria and algae have several biotechnological, industrial, pharmaceutical, and cosmetic uses which have also been discussed in this review along with the emerging technology of their harvesting for enhancing the production of compounds like bioethanol, biofuel etc. at commercial level. In later sections, we have discussed genetically modified organisms and metabolite production from them. We have also briefly discussed the concept of bioprocessing highlighting the functioning of companies engaged in metabolites production as well as their cost effectiveness and challenges that are being addressed by these companies.

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Section: An Outlook Of Metabolites: Basically What They Are?mentioning

confidence: 99%

Section: An Outlook Of Metabolites: Basically What They Are?mentioning

confidence: 99%

Uncovering Potential Applications of Cyanobacteria and Algal Metabolites in Biology, Agriculture and Medicine: Current Status and Future Prospects

et al. 2017

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“…, Gómez et al. ), the majority of green macroalgae (e.g., Ulva ) lack in high concentrations of UV‐absorbing compounds (Pescheck et al. , Pescheck and Bilger ).…”

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confidence: 99%

“…Moreover, high irradiances of UV radiation also cause damages to the PSII repair cycle, which delays the repair of photodamaged D1 proteins in PSII (Liu et al 2014, Zhang et al 2015a. In contrast to red and brown macroalgae, which have a certain UV-screening capacity by mycosporine-like amino acids (MAAs) and phlorotannins (Huovinen et al 2004(Huovinen et al , G omez et al 2016, the majority of green macroalgae (e.g., Ulva) lack in high concentrations of UV-absorbing compounds (Pescheck et al 2010, Pescheck andBilger 2018). However, so far little is known about the induction and accumulation of phenolic compounds in response to diurnally changing radiation conditions and their interaction between PAR and UV stress.…”

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confidence: 99%

Interaction of Photoprotective and Acclimation Mechanisms in Ulva rigida (Chlorophyta) in Response to Diurnal Changes in Solar Radiation in Southern Chile

Cruces

Rautenberger

Cubillos

et al. 2019

Journal of Phycology

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Species of the genus Ulva (Chlorophyta) are regarded as opportunistic organisms, which efficiently adjust their metabolism to the prevailing environmental conditions. In this study, changes in chlorophyll‐a fluorescence‐based photoinhibition of photosynthesis, electron transport rates, photosynthetic pigments, lipid peroxidation, total phenolic compounds, and antioxidant metabolism were investigated during a diurnal cycle of natural solar radiation in summer (for 12 h) under two treatments: photosynthetically active radiation (PAR: 400–700 nm) and PAR+ ultraviolet (UV) radiation (280–700 nm). In the presence of PAR alone, Ulva rigida showed dynamic photoinhibition, and photosynthetic parameters and pigment concentrations decreased with the intensification of the radiation. On the other hand, under PAR+UV conditions a substantial decline up to 43% was detected and an incomplete fluorescence recovery, also, P‐I curve values remained low in relation to the initial condition. The phenolic compounds increased their concentration only in UV radiation treatments without showing a correlation with the antioxidant activity. The enzimatic activity of superoxide dismutase (SOD) and ascorbate peroxidase (APX) increased over 2‐fold respect at initial values during the onset of light intensity. In contrast, catalase (CAT) increased its activity rapidly in response to the radiation stress to reach maxima at 10 a.m. and decreasing during solar. The present study suggests that U. rigida is capable of acclimating to natural radiation stress relies on a concerted action of various physiological mechanisms that act at different times of the day and under different levels of environmental stress.

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“…But not all types of phlorotannins behave in the same way. Soluble phlorotannins exhibit a more dynamic short- and mid-term responses towards UV exposures, as observed in the kelps Lessonia nigrescens, Lessonia spicata and Macrocystis pyrifera and the fucoid Durvillaea antarctica [ 267 , 268 , 269 , 270 ]; whereas the insoluble content has a more stable pattern, displaying little differences upon variations of irradiance, depth or season [ 267 , 268 , 269 ]. Indeed, algae tend to anatomically allocate these two phlorotannins fractions accordingly, e.g., soluble phlorotannins tend to be more concentrated in reproductive and active structures than in vegetative tissues, where the insoluble phlorotannins are predominant [ 268 , 269 ].…”

Section: Uv Photoprotection In Marine Organisms: Antarctic and Nonmentioning

confidence: 99%

UV-Protective Compounds in Marine Organisms from the Southern Ocean

et al. 2018

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Solar radiation represents a key abiotic factor in the evolution of life in the oceans. In general, marine, biota—particularly in euphotic and dysphotic zones—depends directly or indirectly on light, but ultraviolet radiation (UV-R) can damage vital molecular machineries. UV-R induces the formation of reactive oxygen species (ROS) and impairs intracellular structures and enzymatic reactions. It can also affect organismal physiologies and eventually alter trophic chains at the ecosystem level. In Antarctica, physical drivers, such as sunlight, sea-ice, seasonality and low temperature are particularly influencing as compared to other regions. The springtime ozone depletion over the Southern Ocean makes organisms be more vulnerable to UV-R. Nonetheless, Antarctic species seem to possess analogous UV photoprotection and repair mechanisms as those found in organisms from other latitudes. The lack of data on species-specific responses towards increased UV-B still limits the understanding about the ecological impact and the tolerance levels related to ozone depletion in this region. The photobiology of Antarctic biota is largely unknown, in spite of representing a highly promising reservoir in the discovery of novel cosmeceutical products. This review compiles the most relevant information on photoprotection and UV-repair processes described in organisms from the Southern Ocean, in the context of this unique marine polar environment.

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Spatial distribution of phlorotannins and its relationship with photosynthetic UV tolerance and allocation of storage carbohydrates in blades of the kelp Lessonia spicata

Cited by 18 publications

References 58 publications

Uncovering Potential Applications of Cyanobacteria and Algal Metabolites in Biology, Agriculture and Medicine: Current Status and Future Prospects

Uncovering Potential Applications of Cyanobacteria and Algal Metabolites in Biology, Agriculture and Medicine: Current Status and Future Prospects

Interaction of Photoprotective and Acclimation Mechanisms in Ulva rigida (Chlorophyta) in Response to Diurnal Changes in Solar Radiation in Southern Chile

UV-Protective Compounds in Marine Organisms from the Southern Ocean

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