Light dependent accumulation of β-carotene enhances photo-acclimation of Euglena gracilis.
Blue light
Carotenoid
Photo-acclimation
Photosynthesis
Red light
Journal
Journal of photochemistry and photobiology. B, Biology
ISSN: 1873-2682
Titre abrégé: J Photochem Photobiol B
Pays: Switzerland
ID NLM: 8804966
Informations de publication
Date de publication:
Aug 2020
Aug 2020
Historique:
received:
15
03
2020
revised:
30
05
2020
accepted:
29
06
2020
pubmed:
19
7
2020
medline:
13
2
2021
entrez:
19
7
2020
Statut:
ppublish
Résumé
Carotenoids are essential components of photosynthetic organisms including land plants, algae, cyanobacteria, and photosynthetic bacteria. Although the light-mediated regulation of carotenoid biosynthesis, including the light/dark cycle as well as the dependence of carotenoid biosynthesis-related gene translation on light wavelength, has been investigated in land plants, these aspects have not been studied in microalgae. Here, we investigated carotenoid biosynthesis in Euglena gracilis and found that zeaxanthin accumulates in the dark. The major carotenoid species in E. gracilis, namely β-carotene, neoxanthin, diadinoxanthin and diatoxanthin, accumulated corresponding to the duration of light irradiation under the light/dark cycle, although the translation of carotenoid biosynthesis genes hardly changed. Irradiation with either blue or red-light (3 μmol photons m
Identifiants
pubmed: 32682285
pii: S1011-1344(20)30400-0
doi: 10.1016/j.jphotobiol.2020.111950
pii:
doi:
Substances chimiques
Photosystem II Protein Complex
0
Xanthophylls
0
Zeaxanthins
0
beta Carotene
01YAE03M7J
Chlorophyll
1406-65-1
diadinoxanthin
18457-54-0
diatoxanthin
3VOI529I46
neoxanthin
KK8M5T48AI
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
111950Informations de copyright
Copyright © 2020 Elsevier B.V. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of Competing Interest The authors have no conflicts of interest to declare.