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.

The multi-purpose role of hairiness in the lichens of coastal environments: Insights from Seirophora villosa (Ach.) Frödén / Bianchi E.; Benesperi R.; Colzi I.; Coppi A.; Lazzaro L.; Paoli L.; Papini A.; Pignattelli S.; Tani C.; Vignolini P.; Gonnelli C.. - In: PLANT PHYSIOLOGY AND BIOCHEMISTRY. - ISSN 0981-9428. - ELETTRONICO. - 141:(2019), pp. 398-406. [10.1016/j.plaphy.2019.06.022]

The multi-purpose role of hairiness in the lichens of coastal environments: Insights from Seirophora villosa (Ach.) Frödén

Bianchi E.;Benesperi R.;Colzi I.;Coppi A.;Lazzaro L.;Papini A.;Pignattelli S.;Tani C.;Vignolini P.;Gonnelli C.
2019

Abstract

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.
2019
141
398
406
Bianchi E.; Benesperi R.; Colzi I.; Coppi A.; Lazzaro L.; Paoli L.; Papini A.; Pignattelli S.; Tani C.; Vignolini P.; Gonnelli C.
File in questo prodotto:
File Dimensione Formato  
plant physiology and biochemistry, 2019.pdf

Accesso chiuso

Tipologia: Pdf editoriale (Version of record)
Licenza: Tutti i diritti riservati
Dimensione 2.22 MB
Formato Adobe PDF
2.22 MB Adobe PDF   Richiedi una copia

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1160344
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 9
  • ???jsp.display-item.citation.isi??? 9
social impact