Stress physiology of palm trees II. The effect of heavy metals and high irradiance on the photosynthesis of palm Trachycarpus fortunei

A tétel rövid nézete
dc.creatorNeményi, A.
dc.creatorKissimon, J.
dc.creatorDroppa, M.
dc.creatorBaron, M.
dc.creatorHorváth, G.
dc.date1999-05-24
dc.date.accessioned2021-06-28T09:57:03Z
dc.date.available2021-06-28T09:57:03Z
dc.descriptionA study was carried out to analyse the individual and combined effects of heavy metal toxicity and high irradiance on the photosynthetic characteristics of young, fully expanded leaves of palm seedling Trachycarpus fortunei under laboratory conditions. Heavy metals were found to inhibit both the light and dark reactions of photosynthesis and the inhibition was more affected in the light than in the dark. Single photoinhibitory conditions caused a 60 % decrease in the electron transport activity after 120 min of light exposure which was completely reversible in the dark. In contrast, the combined effect of high light and heavy metal treatment resulted in a 90 % decrease in the activity, but no reversible recovery in the dark could be detected. This indicated that the simultaneous effect of these two stress factors led to irreversible damages of the photosynthetic machinery and as a consequence caused the general destruction of the plant. Abbreviations and symbols: Fo: initial chlorophyll fluorescence; Fm: maximum total fluorescence; Fv: variable fluorescence; AFi: intermediate level of fluorescence induction; PSII: photosystem 2.  
dc.formatapplication/pdf
dc.identifierhttps://ojs.lib.unideb.hu/IJHS/article/view/30
dc.identifier10.31421/IJHS/5/1-2/30
dc.identifier.urihttp://hdl.handle.net/2437/313960
dc.languageeng
dc.publisherUniversity of Debrecen
dc.relationhttps://ojs.lib.unideb.hu/IJHS/article/view/30/30
dc.rightsCopyright (c) 2018 International Journal of Horticultural Science
dc.sourceInternational Journal of Horticultural Science; Vol. 5 No. 1-2 (1999); 84-88.
dc.source2676-931X
dc.source1585-0404
dc.source10.31421/IJHS/5/1-2
dc.subjectchlorophyll fluorescence
dc.subjectphotoinhibition
dc.subjectheavy metals
dc.subjectArecaceae
dc.subjectTrachycarpus
dc.titleStress physiology of palm trees II. The effect of heavy metals and high irradiance on the photosynthesis of palm Trachycarpus fortunei
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
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International Journal of Horticultural Science