RT Journal Article
T1 Effects of Seawater Polyphenols from Gongolaria usneoides on Photosynthesis and Biochemical Compounds of the Invasive Alien Species Rugulopteryx okamurae (Phaeophyceae, Heterokontophyta)
A1 Pereira, Débora Tomazi
A1 García Alarcón, Fernando
A1 García Alarcón, Manolo
A1 Celis Plá, Paula
A1 López-Figueroa, Félix
K1 Algas marinas
AB Gongolaria usneoides is a native brown alga in Europa, known for its high release of phenolics into the water. Rugulopteryx okamurae is a native brown macroalga from Asia but invasive in Europe, causing significant environmental and socioeconomic impacts. It has been observed that in some regions where Gongolaria is present, there is less biomass of Rugulopteryx, and they are often epiphytized by red filamentous algae. The present study aimed to analyze whether phenolics released in the seawater by G. usneoides affect the photosynthetic and biochemical responses in R. okamurae. To analyze the resilience of R. okamurae, algae were cultivated for 5 days in water with different percentages of phenolics released by G. usneoides (exposure phase) (0, 75, 150, 225 and 300 µg mL−1) in laboratory (20 °C, a 12:12 photoperiod, and PAR 190 µmol photons m−2 s−1 for a period of 115 h) and a period in the sun (4 h), followed 2 days cultured under phenolic-free water (recovery phase). Photosynthetic characteristics (Fv/Fm and ETR) and biochemical composition (phenolic, antioxidant activity, C, N and S) were measured (R. okamurae showed considerable photosynthetic declines without recovery when exposed to high concentrations of phenolics (225 and 300 µg mL−1). It can be inferred that the presence of G. usneoides in nature and the release of phenolic compounds by this alga may be affecting the invasive alga R. okamurae, potentially serving as a natural means to decrease or weaken the invasive species.
PB MDPI
YR 2025
FD 2025
LK https://hdl.handle.net/10630/40396
UL https://hdl.handle.net/10630/40396
LA eng
NO Pereira, D.T.; Alarcón, F.G.; Alarcón, M.G.; Celis-Plá, P.S.M.; Figueroa, F.L. Effects of Seawater Polyphenols from Gongolaria usneoides on Photosynthesis and Biochemical Compounds of the Invasive Alien Species Rugulopteryx okamurae (Phaeophyceae, Heterokontophyta). Plants 2025, 14, 2594. https://doi.org/10.3390/plants14162594
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 12 abr 2026