Next Article in Journal
Exercise and Inflammation
Next Article in Special Issue
Fucoxanthin, A Carotenoid Derived from Phaeodactylum tricornutum Exerts Antiproliferative and Antioxidant Activities In Vitro
Previous Article in Journal
Glycemic Control during Pregnancy—A Predictor of Vitamin C Status at Labor in Type 1 Diabetic Women?
Previous Article in Special Issue
Red Light Control of β-Carotene Isomerisation to 9-cis β-Carotene and Carotenoid Accumulation in Dunaliella salina
Open AccessArticle

Antioxidant and Photoprotection Networking in the Coastal Diatom Skeletonema marinoi

1
Stazione Zoologica Anton Dohrn, Istituto Nazionale di Biologia, Ecologia e Biotecnologie marine, Villa Comunale, 80121 Napoli, Italy
2
Department of Biology, University of Copenhagen, Strandpromenaden 5, 3000 Helsingør, Denmark
*
Author to whom correspondence should be addressed.
Antioxidants 2019, 8(6), 154; https://doi.org/10.3390/antiox8060154
Received: 7 May 2019 / Revised: 23 May 2019 / Accepted: 29 May 2019 / Published: 1 June 2019
(This article belongs to the Special Issue Marine Algal Antioxidants)
Little is known on the antioxidant activity modulation in microalgae, even less in diatoms. Antioxidant molecule concentrations and their modulation in microalgae has received little attention and the interconnection between light, photosynthesis, photoprotection, and antioxidant network in microalgae is still unclear. To fill this gap, we selected light as external forcing to drive physiological regulation and acclimation in the costal diatom Skeletonema marinoi. We investigated the role of light regime on the concentration of ascorbic acid, phenolic compounds and among them flavonoids and their connection with photoprotective mechanisms. We compared three high light conditions, differing in either light intensity or wave distribution, with two low light conditions, differing in photoperiod, and a prolonged darkness. The change in light distribution, from sinusoidal to square wave distribution was also investigated. Results revealed a strong link between photoprotection, mainly relied on xanthophyll cycle operation, and the antioxidant molecules and activity modulation. This study paves the way for further investigation on the antioxidant capacity of diatoms, which resulted to be strongly forced by light conditions, also in the view of their potential utilization in nutraceuticals or new functional cosmetic products. View Full-Text
Keywords: light; ascorbic acid; phenolic compounds; flavonoids; photoprotection light; ascorbic acid; phenolic compounds; flavonoids; photoprotection
Show Figures

Figure 1

MDPI and ACS Style

Smerilli, A.; Balzano, S.; Maselli, M.; Blasio, M.; Orefice, I.; Galasso, C.; Sansone, C.; Brunet, C. Antioxidant and Photoprotection Networking in the Coastal Diatom Skeletonema marinoi. Antioxidants 2019, 8, 154.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop