Seasonal biochemical and photophysiological responses in the intertidal macroalga Cystoseira tamariscifolia (Ochrophyta)

Celis-Plá, Paula S. M.; Bouzon, Zenilda L.; Hall-Spencer, Jason M.; Schmidt, Éder C.; Korbee, Nathalie; Figueroa, Félix L.

doi:10.1016/j.marenvres.2015.11.014

Cited by 46 publications

(53 citation statements)

References 46 publications

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“…For instance, in red macroalgae, nitrogen is needed to synthesize UV screening substances such as mycosporine‐like amino acids (Figueroa & Korbee, ; Huovinen, Matos, Pinto, & Figueroa, ). Thus, under nutrient limitation, the photoprotective capability of macroalgae to cope with high light intensity can be reduced (Celis‐Plá et al., ; Huovinen et al., ; Korbee‐Peinado, Abdala‐Díaz, Figueroa, & Helbling, ; Pavia & Brock, ). An example of this interactive effect is that of Cystoseira tamariscifolia living on Mediterranean coasts, which exhibited lower photoprotective phenolic compound contents under high irradiance and nutrient depletion conditions (Celis‐Plá et al., ).…”

Section: Discussionmentioning

confidence: 99%

“…Consequently, algae have developed a suite of repairing and photoprotective mechanisms that enable them to cope with the oxidative stress resulting from ROS (Cruces et al, 2017;De la Coba et al, 2009). As a result, photoacclimation of macrophytes to high irradiance levels typically involves high antioxidant activities and increases in photoprotective compounds such as carotenoids (Celis-Plá et al, 2016;Ji et al, 2016). These latter pigments play an essential role in photoprotection due to their ability to quench ROS (Ramlov et al, 2011;Wu, 2016) and dissipate excess energy as heat (Wiencke & Bischof, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…Under radiation stress, the accumulation of reactive oxygen species (ROS) and photosynthetic pigment conentrations are used to determine the biochemical performance of macroalgae (Celis-Plá et al, 2016;Figueroa, Domínguez-González, & Korbee, 2014a;Stengel et al, 2014). Increasing irradiance levels enhance the production and accumulation of ROS, which leads to a subsequent increase in antioxidant activity (Celis-Plá et al, 2016;Ji, Xu, Zou, & Gao, 2016) and in photoprotective compounds such as carotenoids (Ramlov et al, 2011;Wu, 2016). The increase in antioxidant activity is thus interpreted as an increase in environmental stress caused by changes in the factors controlling photosynthesis such as excess light (Figueroa et al, 2014b).…”

Section: Introductionmentioning

confidence: 99%

“…).Thus, under nutrient limitation, the photoprotective capability of macroalgae to cope with high light intensity can be reduced(Celis-Plá et al, 2016;Huovinen et al, 2006;Korbee-Peinado, Abdala-Díaz, Figueroa, & Helbling, 2004;Pavia & Brock, 2000). An example of this interactive effect is that of Cystoseira tamariscifolia living on Mediterranean coasts, which exhibited lower photoprotective phenolic compound contents under high irradiance and nutrient depletion conditions(Celis-Plá et al, 2016). Although nutrient availability was not examined in the present investigation, the hypothesis of nutrient limitation in our study area is robust as the coastal shelf waters off the Basque coast present oligotrophic conditions during summer stratification…”

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confidence: 99%

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Depth influence on biochemical performance and thallus size of the red alga Gelidium corneum

et al. 2018

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Recent declines in the foundation species Gelidium corneum (Hudson) J.V. Lamouroux in pristine coastal stretches of the Southeastern Bay of Biscay have been documented in which individuals showed a high bleaching incidence. Among the potential factorsthat may be responsible for these changes in G. corneum abundance, it has been suggested that high levels of irradiance may be imposing stressful environmental conditions for shallow populations. Given that light is reduced exponentially as depth increases, in this investigation we examined the influence of depth on the stress of G. corneum by comparing the performance of several biochemical parameters and thallus size in plants collected at three different depths. The results revealed that plants growing in shallow waters showed lower antioxidant activity, lower concentrations of photosynthetic pigments (Chl‐a, total carotenoids, phycoerythrin), lower internal nitrogen levels (higher C:N ratio) and shorter thallus lengths than those living in deeper waters. Some of these results may be an expression of photoacclimation, but the low antioxidant activity and total carotenoid concentration detected in plants living in shallow waters suggest that the photoprotective mechanisms of G. corneum may have failed to offset photodamage. If so, our findings support previous studies that suggest that recent changes in solar radiation are partially responsible for G. corneum declines. Nevertheless, given that the metabolic performance of macroalgae is determined by the inter‐play of irradiance with other factors, including temperature and nutrient availability, further research is needed to reach a better understanding of the factors causing stress in G. corneum.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Depth influence on biochemical performance and thallus size of the red alga Gelidium corneum

et al. 2018

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“…Moreover, they are under surveillance by the IUCN (International Union for Conservation of Nature), the Berne Convention (Council of Europe, 1979) [53] and the Barcelona Convention (UNEP/MAP, 2009) [54]. Since these algae are particularly sensitive to variations of environmental factors [24,55,56], the Water Framework Directive (WFD, 2000/60/EC) [57] and the Marine Strategy Framework Directive (MSFD, 2008/ 56/EC) [58] considered them as reliable indicators of environmental quality in Mediterranean coastal waters [59,60]. Human pressures are increasingly limiting their distribution, and most of these algae are currently experiencing a severe decline in many Mediterranean regions [26,55,[61][62][63].…”

Section: Genus Cystoseira Sensu Latomentioning

confidence: 99%

Ecological Function of Phenolic Compounds from Mediterranean Fucoid Algae and Seagrasses: An Overview on the Genus Cystoseira sensu lato and Posidonia oceanica (L.) Delile

Mannino

Micheli

2020

JMSE

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Biodiversity is undergoing rapid and worrying changes, partially driven by anthropogenic activities. Human impacts and climate change (e.g., increasing temperature and ocean acidification), which act at different spatial scales, represent the most serious threats to biodiversity and ecosystem structure and function. In the Mediterranean Sea, complex systems such as fucoid algae and seagrasses, characterized by a high associated biodiversity, are regularly exposed to natural and anthropogenic pressures. These systems, particularly sensitive to a variety of stressors, evolved several physiological and biochemical traits as a response to the different pressures which they are subjected to. For instance, they produce a huge quantity of secondary metabolites such as phenolic compounds, to adapt to different environmental stressors and to defend themselves from biological pressures. These natural products are receiving increasing attention due to their possible applications in a wide range of industrial sectors. In this paper we provide an overview on the ecological role of phenolic compounds from the genus Cystoseira sensu lato and Posidonia oceanica (L.) Delile, also highlighting their potential use as ecological biomarkers.

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Ecophysiological responses to elevated CO2 and temperature in Cystoseira tamariscifolia (Phaeophyceae)

et al. 2017

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Ocean acidification increases the amount of dissolved inorganic carbon (DIC) available in seawater which can benefit photosynthesis in those algae that are currently carbon limited. Carbon dioxide emissions are causing fundamental changes in surface ocean carbon chemistry that are expected to boost growth rates in some algae but not others, leading to shifts in the structure and function of seaweed communities. Recent studies show ocean acidification driven shifts in seaweed community dominance depend on interactions with other factors such as light and nutrients. The study of interactive effects of ocean acidification and warming can help elucidate the likely effects of climate change on marine primary producers. In this study, we investigated the ecophysiological responses in a brown macroalgae species Cystoseira tamariscifolia (Hudson) Papenfuss with important structural role in the coastal Mediterranean communities. Algae were collected in oligotrophic vs ultra-oligotrophic waters in the Mediterranean Sea and they were incubated in tanks at ambient (ca. 400-500 ppm) and high CO2 (ca. 1200-1300 ppm), and at two testing temperatures at 20ºC (ambient temperature) and 24ºC (ambient temperature + 4ºC). Increased CO2 levels benefited the algae from both origins. Biomass increased in elevated CO2 treatments and was similar in algae from both origins. The maximal electron transport rate (ETRmax), used to estimate photosynthetic capacity, increased in ambient temperature/high CO2 treatments. The highest polyphenol content and antioxidant activity were observed in ambient temperature/high CO2 conditions in algae from both origins being the phenol content higher in algae from ultra-oligotrophic waters (1.5-3.0 %) than that from oligotrophic waters (1.0-2.2 %). Our study shows that ongoing ocean acidification can be expected to increase algal productivity (ETRmax), boost antioxidant activity (EC50) and increase production of photoprotective compounds (polyphenols). Cystoseira tamariscifolia collected from oligotrophic and ultra-oligotrophic waters were able to acclimate to increases in DIC with under ambient temperature.

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Seasonal biochemical and photophysiological responses in the intertidal macroalga Cystoseira tamariscifolia (Ochrophyta)

Cited by 46 publications

References 46 publications

Depth influence on biochemical performance and thallus size of the red alga Gelidium corneum

Depth influence on biochemical performance and thallus size of the red alga Gelidium corneum

Ecological Function of Phenolic Compounds from Mediterranean Fucoid Algae and Seagrasses: An Overview on the Genus Cystoseira sensu lato and Posidonia oceanica (L.) Delile

Ecophysiological responses to elevated CO2 and temperature in Cystoseira tamariscifolia (Phaeophyceae)

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