Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Leaf physiological versus morphological acclimation to high-light exposure at different stages of foliar development in oak
Year:2008
Research Areas
  • Plant physiology,
  • Ecology,
  • Crop production
Information
Abstract
We investigated light acclimation in seedlings of the temperate oak Quercus petraea (Matt.) Liebl. and the co-occurring sub-Mediterranean oak Quercus pyrenaicaWilld. Seedlings were raised in a greenhouse for 1 year in either 70 (HL) or 5.3% (LL) of ambient irradiance of full sunlight, and, in the following year, subsets of the LL-grown seedlings were transferred to HL either before leaf flushing (LL-HLBF plants) or after full leaf expansion (LL-HLAF plants). Gas exchange, chlorophyll a fluorescence, nitrogen fractions in photosynthetic components and leaf anatomy were examined in leaves of all seedlings 5 months after plants were moved from LL to HL. Differences between species in the acclimation of LL-grown plants to HL were minor. For LL-grown plants in HL, area-based photosynthetic capacity, maximum rate of carboxylation, maximum rate of electron transport and the effective photochemical quantum yield of photosystem II were comparable to those for plants grown solely in HL. A rapid change in nitrogen distribution among photosynthetic componentswas observed in LL-HLAF plants, which had the highest photosynthetic nitrogen-use efficiency. Increases in mesophyll thickness and dry mass per unit area governed leaf acclimation in LL-HLBF plants, which tended to have less nitrogen in photosynthetic components and a lower assimilation potential per unit of leaf mass or nitrogen than LL-HLAF plants. The data indicate that the phenological state of seedlings modified the acclimatory response of leaf attributes to increased irradiance. Morphological adaptation of leaves of LL-HLBF plants enhanced photosynthetic capacity per unit leaf area, but not per unit leaf dry mass, whereas substantial redistribution of nitrogen among photosynthetic components in leaves of LL-HLAF plants enhanced both mass- and area-based photosynthetic capacity.
International
Si
JCR
Si
Title
TREE PHYSIOLOGY
ISBN
0829-318X
Impact factor JCR
2,141
Impact info
Volume
28
Journal number
0
From page
761
To page
771
Month
MAYO
Ranking
Participants
  • Participante: Peter B. Reich (University of Minnesota)
  • Autor: Jesus Rodriguez Calcerrada (UPM)
  • Autor: Francisco Javier Cano Martín (UPM)
  • Participante: E Rosenqvist (University of Copenhagen, Denmark)
  • Autor: Ismael Aranda García (UPM)
  • Autor: Jose Alberto Pardos Carrion (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Genética y Fisiología Forestal
  • Departamento: Silvopascicultura
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)