Role of xanthophyll cycle-mediated photoprotection in Arbutus unedo plants exposed to water stress during the Mediterranean summer (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Role of xanthophyll cycle-mediated photoprotection in Arbutus unedo plants exposed to water stress during the Mediterranean summer (Articolo in rivista) (literal)

Anno

• 2008-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1007/s11099-008-0069-x (literal)

Alternative label

• Baraldi, R (Baraldi, R.)1; Canaccini, F (Canaccini, F.)2; Cortes, S (Cortes, S.)3; Magnani, F (Magnani, F.)2; Rapparini, F (Rapparini, F.)1; Zamboni, A (Zamboni, A.)2; Raddi, S (Raddi, S.)4 (2008)
  Role of xanthophyll cycle-mediated photoprotection in Arbutus unedo plants exposed to water stress during the Mediterranean summer
  in Photosynthetica (Praha)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Baraldi, R (Baraldi, R.)1; Canaccini, F (Canaccini, F.)2; Cortes, S (Cortes, S.)3; Magnani, F (Magnani, F.)2; Rapparini, F (Rapparini, F.)1; Zamboni, A (Zamboni, A.)2; Raddi, S (Raddi, S.)4 (literal)

Pagina inizio

• 378 (literal)

Pagina fine

• 386 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 46 (literal)

Rivista

• Photosynthetica (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 3 (literal)

Note

• ISI Web of Science (WOS) (literal)
• Scopu (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• 1. CNR, Ist Biometeorol, I-40129 Bologna, Italy 2. Univ Bologna, Dipartimento Colture Arboree, I-40127 Bologna, Italy 3. Univ Basilicata, Dipartimento Sci Sistemi Colturali Forestali & Am, I-85100 Potenza, Italy 4. Univ Florence, Dipartimento Sci & Tecnol Ambientali Forestali, I-50145 Florence, Italy (literal)

Titolo

• Role of xanthophyll cycle-mediated photoprotection in Arbutus unedo plants exposed to water stress during the Mediterranean summer (literal)

Abstract

• We analyzed the response of potted strawberry tree (Arbutus unedo L.) seedlings exposed to water stress by withholding water for 10 d (WS). Leaf water potential, net CO(2) assimilation, and stomatal conductance decreased with increasing water deficit. A 30 % reduction of chlorophyll (Chl) content in the antenna complexes was observed in WS-plants. Simultaneously, a decline of photochemical efficiency (F(v)/F(m)) occurred as a result of an excess of solar radiation energy when carbon assimilation was limited by stomata closure due to soil water deficit. The non-photochemical quenching of Chl fluorescence (Phi(NPQ)) significantly increased, as well as the leaf contents of zeaxanthin (Z) and antheraxanthin (A) at the expense of violaxanthin during the WS-period. Elevated predawn contents of de-epoxidized xanthophyll cycle components were associated with a sustained lowering of predawn photosystem 2 efficiency; this suggested an engagement of Z+A in a state primed for energy dissipation. Thus, the ability of strawberry trees to maintain the functionality of the xanthophyll cycle during the Mediterranean summer is an efficient mechanism to prevent irreversible damages to the photosynthetic machinery through thermal energy dissipation in the antenna and the reduction in photochemical efficiency. (literal)

Prodotto di

• Institute for biometeorology (IBIMET) (Istituto)
• Micrometeorologia, ecofisiologia e produttività dei sistemi naturali e antropizzati. (AG.P04.032.006) (Modulo)

Autore CNR

• RITA BARALDI (Unità di personale interno)
• FRANCESCA RAPPARINI (Unità di personale interno)

Insieme di parole chiave

• Keywords of "Role of xanthophyll cycle-mediated photoprotection in Arbutus unedo plants exposed to water stress during the Mediterranean summer" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute for biometeorology (IBIMET) (Istituto)
• Micrometeorologia, ecofisiologia e produttività dei sistemi naturali e antropizzati. (AG.P04.032.006) (Modulo)

Autore CNR di

• RITA BARALDI (Unità di personale interno)
• FRANCESCA RAPPARINI (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Photosynthetica (Rivista)

Insieme di parole chiave di

• Keywords of "Role of xanthophyll cycle-mediated photoprotection in Arbutus unedo plants exposed to water stress during the Mediterranean summer" (Insieme di parole chiave)