The multi-purpose role of hairiness in the lichens of coastal environments: Insights from Seirophora villosa (Ach.) Frödén.
Antioxidants
/ chemistry
Carotenoids
/ chemistry
Chlorophyll A
/ chemistry
Chlorophyta
/ physiology
Dehydration
Free Radical Scavengers
/ chemistry
Hydrogen Peroxide
/ chemistry
Lichens
/ physiology
Lipid Peroxidation
Malondialdehyde
/ chemistry
Mediterranean Region
Oxidative Stress
Photosynthesis
Reactive Oxygen Species
/ chemistry
Salt Stress
Spectrometry, Fluorescence
Water
/ chemistry
Antioxidant activity
Chlorophyll a fluorescence
Hair
Juniperus shrublands
MDA
Salt stress
Journal
Plant physiology and biochemistry : PPB
ISSN: 1873-2690
Titre abrégé: Plant Physiol Biochem
Pays: France
ID NLM: 9882449
Informations de publication
Date de publication:
Aug 2019
Aug 2019
Historique:
received:
13
03
2019
revised:
14
06
2019
accepted:
15
06
2019
pubmed:
23
6
2019
medline:
6
8
2019
entrez:
23
6
2019
Statut:
ppublish
Résumé
The fruticose epiphytic lichen Seirophora villosa, strictly associated with Juniperus shrublands in the Mediterranean basin, was used to investigate the role of hairiness on a lichen thallus, as a characteristic morphological trait. We evaluated the effect of hair removal on the physiological parameters of a set of samples, during desiccation and on exposure to different salt concentrations. Hairy thalli were less affected by salt, suggesting that during dehydration, the presence of hair protects the thallus from light irradiance, oxidative stresses and the lipid peroxidation generated by free radicals, and could offer passive, but selective, water control. Our results showed that hair could not only increase thallus surface and promote water absorption when availability is low, but could also repel the salt dissolved in water by activating a passive resistance mechanism, by preventing salt entering.
Identifiants
pubmed: 31228796
pii: S0981-9428(19)30257-8
doi: 10.1016/j.plaphy.2019.06.022
pii:
doi:
Substances chimiques
Antioxidants
0
Free Radical Scavengers
0
Reactive Oxygen Species
0
Water
059QF0KO0R
Carotenoids
36-88-4
Malondialdehyde
4Y8F71G49Q
Hydrogen Peroxide
BBX060AN9V
Chlorophyll A
YF5Q9EJC8Y
Types de publication
Journal Article
Langues
eng
Pagination
398-406Informations de copyright
Copyright © 2019 Elsevier Masson SAS. All rights reserved.