Interspecific and temporal variation in phlorotannin levels in an assemblage of brown algae

Connan, Solène; Goulard, Fabienne; Stiger, Valérie; Deslandes, Éric; Gall, Erwan Ar

doi:10.1515/bot.2004.057

Cited by 180 publications

(129 citation statements)

References 31 publications

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“…In the eulittoral and intertidal zone, some algae (Fucus spiralis, Fucus vesicu losus, Ascophyllum nodosum) show higher phenolic content than algae growing in the low intertidal or sublittoral zone (Fucus serratus, Bifurcaria bifurcata, Himathalia elongata and Laminaria digitata) (Connan et al 2004). Also, contents are higher in summer when irradiance is the highest, as observed in several brown macroalgae from Brittany (Connan et al 2004) and in C. tamariscifolia collected in Southern Spain (Abdala-Díaz et al 2006). In contrast, in our study C. tamariscifolia showed higher phenolic content in winter than in summer, probably in relation to the high winter nitrate availability in Málaga (Ramírez et al 2005).…”

Section: Discussionmentioning

confidence: 99%

“…months, seasons, latitude). The phenolic content and the antioxidant activity have been related to algal zonation (Connan et al 2004). In the eulittoral and intertidal zone, some algae (Fucus spiralis, Fucus vesicu losus, Ascophyllum nodosum) show higher phenolic content than algae growing in the low intertidal or sublittoral zone (Fucus serratus, Bifurcaria bifurcata, Himathalia elongata and Laminaria digitata) (Connan et al 2004).…”

Section: Discussionmentioning

confidence: 99%

“…The phenolic content and the antioxidant activity have been related to algal zonation (Connan et al 2004). In the eulittoral and intertidal zone, some algae (Fucus spiralis, Fucus vesicu losus, Ascophyllum nodosum) show higher phenolic content than algae growing in the low intertidal or sublittoral zone (Fucus serratus, Bifurcaria bifurcata, Himathalia elongata and Laminaria digitata) (Connan et al 2004). Also, contents are higher in summer when irradiance is the highest, as observed in several brown macroalgae from Brittany (Connan et al 2004) and in C. tamariscifolia collected in Southern Spain (Abdala-Díaz et al 2006).…”

Section: Discussionmentioning

confidence: 99%

“…Two physiological indicators have been used to evaluate the physiological status of seaweeds (Figueroa and Korbee 2010): (1) maximum quantum yield of PSII (F v /F m ) as an indicator of physiological status of macroalgae and photoinhibition (Schreiber et al 1986) and (2) electron transport rate (ETR) as an indicator of photosynthetic capacity (Figueroa et al 2003). Two biochemical indicators of stress conditions have also been used: (1) stoichiometric ratios (C:N) as an indicator of nutritional status and (2) the content of phenolic compounds, such as photoprotective and antioxidant substances in brown algae (Pavia et al 1997, Connan et al 2004, Abdala-Díaz et al 2006). …”

Section: Introductionmentioning

confidence: 99%

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Seasonal photoacclimation patterns in the intertidal macroalga <em>Cystoseira tamariscifolia</em> (Ochrophyta)

et al. 2014

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Summary: Cystoseira tamariscifolia thalli collected from rocky shores and rockpools in winter and summer in Southern Spain were incubated for 7 days in UV transparent cylindrical vessels under outdoor conditions. Photosynthetic activity estimated as in vivo chlorophyll a fluorescence of photosystem II, photosynthetic pigments, antioxidant activity (DPPH assay), phenolic compounds and total internal C and N contents were determined after short-term (3 d) and mid-term (7 d) periods. Maximum quantum yield of PSII (F v /F m ) was significantly higher in field-collected algae and after 7 d incubation in winter than in summer. In rocky shores and rockpools thalli, maximum electron transport rate (ETR max ) and photosynthetic efficiency (a ETR ) were much higher in summer than in winter. ETR of outdoor-grown thalli (in situ ETR) showed a daily pattern, with a decrease at noon in both winter and summer (3 rd and 7 th days). We found much higher antioxidant activity in thalli collected in summer than in winter. However, the concentration of internal UV screen substances (polyphenols) was higher in winter than in summer, whereas the release of phenolic compounds was lower. The highest capacity of acclimation in C. tamariscifolia found in summer and RS with emersion periods was explained by the highest dynamic photoinhibition, energy dissipation (non-photochemical quenching) and antioxidant activity (EC 50 ).Keywords: antioxidant activity; Cystoseira tamariscifolia; phenolic compounds; photoinhibition; photoprotection. Patrones estacionales de fotoaclimatación en el alga intermareal, Cystoseira tamariscifolia (Ochrophyta)Resumen: Talos de Cystoseira tamariscifolia recolectados en pozas y plataformas rocosas intermareales (Sur de España) en invierno y en verano se incubaron bajo radiación solar durante 7 días en recipientes cilíndricos de metacrilato transparentes a la radiación UV. Se estimó la actividad fotosintética a través de la fluorescencia de la clorofila a asociada al fotosistema II, el contenido de pigmentos fotosintéticos y compuestos fenólicos, actividad antioxidante y el contenido total en C y N internos tras 3 y 7 días de incubación. Los valores iniciales del rendimiento cuántico máximo (F v /F m ) fueron significativamente mayores en algas recolectadas en invierno que en verano mientras que la tasa de transporte electrónico máximo (ETR max ) y la eficiencia fotosintética fueron mayores en verano que en invierno en ambas zonas. Por otra parte, la tasa de transporte electrónico determinada bajo radiación solar presentó un patrón diario, con una disminución a mediodía, tanto en invierno como en los períodos de verano. La actividad antioxidante fue mayor en algas recogidas en verano; sin embargo, la concentración interna de compuestos fenólicos fue mayor en invierno que en verano, mientras que en la tasa de excreción se observó lo contrario. La alta capacidad de aclimatación en C. tamariscifolia en algas sometidas a emersión en las plataformas rocosas en verano se explica por su alta fotoinhibición dinámica, su c...

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Seasonal photoacclimation patterns in the intertidal macroalga <em>Cystoseira tamariscifolia</em> (Ochrophyta)

et al. 2014

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“…As we see, the natural compound production differs among seaweeds, as well as between and within species [7,20], these differences suggest separate historical origin [11]. In the same way, the type and quantity of secondary compounds in algae differ from vascular plants; in algae, the absence of alkaloids and the presence of halogens compounds have been detected, contrary to terrestrial plants [7].…”

Section: Marine Environmentsmentioning

confidence: 79%

Plant Antiherbivore Defense in Diverse Environments

Morquecho-Contreras¹,

Zepeda-Gómez²,

HermiloSánchez-Sánchez³

2018

Pure and Applied Biogeography

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Herbivores can damage plant productivity and fitness; plants have improved defensive traits, such as chemical defenses. Plant species produce specific defensive traits in response of diverse risk factor generated by herbivores. In this chapter, we analyze and compare the defensive traits used by plants in different habitats: aquatic ecosystems, temperate forest, and rainforest. In aquatic environments, the number of herbivores is scarce, and plants develop biomass and restrict defensive compound production. At the terrestrial environment, plants need to accumulate defensive traits for an eventual attack. But the number and quantity of those traits depend on biotic and abiotic factors. In temperate forest, plants have a low growth, and herbivore diversity is low, because there are a few number of defensive traits but in great quantity to guarantee plant survival. In contrast, at tropical forest there is a great herbivore diversity, and plants have a quick growth; thus they develop a great variety of defensive traits. There are substantial differences in plant defensive strategies at different environments. Usually, the aquatic plants use water-soluble and diffusible compounds; plants in rainforest use a plethora of chemical defenses, and in temperate forest, plants utilize physical barriers, resins, and terpenes.

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