Physiological responses of two co-existing oak species in years with contrasting climatic conditions

Erzsébet Szollosi, V. Oláh, P. Kanalas, J. Kis, B. Nyitrai, E. Sárvári, Á Solti, I. Mészáros

Research output: Contribution to journalArticle

Abstract

In this study we investigated how the intra-and inter-annual fluctuations of weather conditions influenced the physiological traits of sessile oak (Quercus petraea (Matt) Liebl.) and turkey oak (Quercus cerris L.) at Síkfo{double acute}kút LTER site, Hungary, which is considered to be a peripherial habitat for Quercetum petraeae-cerris forest community. Seasonal changes in pigment composition and chlorophyll fluorescence parameters of upper (sun) and lower (shade) leaves of mature trees were studied during two consecutive growing seasons (2007, 2008). During the growing season of 2007 higher annual mean temperature and summer heat waves were recorded as compared to 2008. Leaves of both tree species had smaller chlorophyll content and higher total carotenoid content and xanthophyll cycle pool in summer of 2007 than in 2008. Changes of latter leaf traits under stress conditions in summer of 2007 were indicative for appearance of photoinhibition under heat stress. In 2007 lower F v/F o values also reflected more severe heat-induced decrease in shade leaves of both species compared to 2008. Recovery of F v/F o took place after the hot days of 2007 only in leaves of turkey oak.

Original languageEnglish
Pages (from-to)169-174
Number of pages6
JournalActa Biologica Szegediensis
Volume55
Issue number1
Publication statusPublished - 2011

Fingerprint

Quercus
Chlorophyll
plant response
Hot Temperature
Infrared Rays
Xanthophylls
Hungary
Weather
Solar System
Ecosystem
leaves
Fluorescence
summer
shade
Pigments
Sun
Temperature
growing season
Quercus cerris
chlorophyll

Keywords

  • Carotenoids
  • Chlorophyll fluorescence
  • Chlorophylls
  • Heat stress
  • Sessile oak
  • Turkey oak

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

Physiological responses of two co-existing oak species in years with contrasting climatic conditions. / Szollosi, Erzsébet; Oláh, V.; Kanalas, P.; Kis, J.; Nyitrai, B.; Sárvári, E.; Solti, Á; Mészáros, I.

In: Acta Biologica Szegediensis, Vol. 55, No. 1, 2011, p. 169-174.

Research output: Contribution to journalArticle

Szollosi, E, Oláh, V, Kanalas, P, Kis, J, Nyitrai, B, Sárvári, E, Solti, Á & Mészáros, I 2011, 'Physiological responses of two co-existing oak species in years with contrasting climatic conditions', Acta Biologica Szegediensis, vol. 55, no. 1, pp. 169-174.
Szollosi, Erzsébet ; Oláh, V. ; Kanalas, P. ; Kis, J. ; Nyitrai, B. ; Sárvári, E. ; Solti, Á ; Mészáros, I. / Physiological responses of two co-existing oak species in years with contrasting climatic conditions. In: Acta Biologica Szegediensis. 2011 ; Vol. 55, No. 1. pp. 169-174.
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