Black leaf-clips of a commercial fluorometer increased leaf temperature during dark adaptation under high solar radiation (Articolo in rivista)

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Label
  • Black leaf-clips of a commercial fluorometer increased leaf temperature during dark adaptation under high solar radiation (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s11099-012-0042-6 (literal)
Alternative label
  • Giorio P.; Nuzzo V.; Guida G.; Albrizio R. (2012)
    Black leaf-clips of a commercial fluorometer increased leaf temperature during dark adaptation under high solar radiation
    in Photosynthetica (Dordr., Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Giorio P.; Nuzzo V.; Guida G.; Albrizio R. (literal)
Pagina inizio
  • 467 (literal)
Pagina fine
  • 471 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Reprint Address: Giorio, P (reprint author), Inst Agr & Forestry Syst Mediterranean CNR ISAFOM, Natl Res Council Italy, Via Patacca 85, I-80056 Ercolano, NA, Italy. Web of Science Categories: Plant Sciences Research Areas: Plant Sciences (literal)
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  • 50 (literal)
Rivista
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  • 5 (literal)
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  • 3 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Inst Agr & Forestry Syst Mediterranean CNR ISAFOM, Natl Res Council Italy, I-80056 Ercolano, NA, Italy Univ Basilicata, Dept Crop Syst Forestry & Environm Sci, I-85100 Potenza, Italy (literal)
Titolo
  • Black leaf-clips of a commercial fluorometer increased leaf temperature during dark adaptation under high solar radiation (literal)
Abstract
  • The use of black leaf-clips for dark adaptation under high solar radiation conditions is reported to underestimate the maximum quantum yield of PSII photochemistry (F-v/F-m) measured by the continuous-excitation fluorometer Pocket PEA. The decrease in F-v/F-m was due to a rise in minimum fluorescence emission (F-o), probably resulting from increased leaf temperature (T-l). In field-grown tomato and pepper, fluorescence parameters and T-l in the region covered by the black leaf clip were measured in clipped leaves exposed to solar radiation during dark adaptation (clipped-only leaves) and in clipped leaves protected from solar radiation by aluminium foil (shrouded clipped leaves). Results confirmed significant F-v/F-m underestimates in clipped-only leaves primarily due to increased F-o. In one tomato experiment, T-l increased from 30 to 44.5A degrees C in clipped-only leaves, with a negligible rise in shrouded clipped leaves. In two respective pepper experiments, T-l in clipped-only leaves increased from 27 to 36.2A degrees C and 33 to 40.9A degrees C. Based on the results of this study, a clip-effect parameter (P-CE) on fluorescence emission is proposed as the difference for F-v/F-m (or -F-o/F-m) between shrouded clipped leaves and clipped-only leaves, which resulted to be 0.706 for tomato, and 0.241 and 0.358 for the two pepper experiments. (literal)
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