Effects of UV-B radiation on cuticle thickness and nutritional value of leaves in two mediterranean evergreen sclerophylls
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Ημερομηνία
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Journal of Plant Physiology
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
Seedlings of Laurus nobilis L. and Ceratonia siliqua L., grown for 1 year in the field under ambient radiation conditions were subsequently allowed to produce their new spring growth in a glasshouse in the absence or presence of UV-B radiation. The UV-B radiation dose was biologically equivalent to that which would have being received by the plants in their natural environment. Plant height, number of leaves, total and mean leaf area, the biomass allocated to both above and below ground parts, photochemical efficiency of PS II and chlorophyll content were not affected. However, W-B radiation resulted in slightly thicker leaves in L. nobilis and considerably thicker cuticles in both plants. W-B absorbing compounds were increased only in L.. nobilis, In addition, the leaf nutritional quality of this plant was considerably reduced by UV-B radiation, since phenolics and tannins were increased but nitrogen was decreased. No such changes were observed in C. siliqua. We may conclude that L, nobilis and C. siliqua are not only resistant against UV-B radiation damage, but the observed changes may benefit the plants through their anti-transpirant and anti-herbivore functions.
Περιγραφή
Λέξεις-κλειδιά
ceratonia siliqua, laurus nobilis, cuticle, mediterranean, nitrogen, nutritional quality, uv-b, ultraviolet-radiation, field conditions, screening effectiveness, phlomis-fruticosa, water relations, higher-plants, l seedlings, summer, photosynthesis, res
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Σύνδεσμος
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Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών