Journal Article

Effects of UV-B radiation on <i>Olea europaea</i>: comparisons between a greenhouse and a field experiment

Vally Liakoura, Sotiria Stavrianakou, George Liakopoulos, George Karabourniotis and Yiannis Manetas

in Tree Physiology

Volume 19, issue 13, pages 905-908
Published in print November 1999 | ISSN: 0829-318X
Published online November 1999 | e-ISSN: 1758-4469 | DOI: http://dx.doi.org/10.1093/treephys/19.13.905
Effects of UV-B radiation on Olea europaea: comparisons between a greenhouse and a field experiment

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We compared growth, morphology, anatomy and physiology of field-grown Olea europaea L. plants after one year with or without supplemental UV-B radiation equivalent to the increase at ground level resulting from a 15% depletion in stratospheric ozone concentration over Patras, Greece (38.3° N, 29.1° E). In a parallel greenhouse experiment, plants were exposed for four months to either zero UV-B radiation or UV-B radiation equivalent to that of the supplemented outdoor treatment. In the field, the only significant changes in response to supplemental UV-B radiation were an increase in adaxial epidermal thickness and a decrease in total protein concentration. In the greenhouse-grown plants, UV-B radiation caused significant increases in abaxial cuticle thickness and trichome UV-B absorbing compounds. We conclude that Olea europaea exhibits high UV-B tolerance and will not be affected by the predicted increases in UV-B radiation.

Keywords: common olive; epidermal thickness; ozone depletion; phenolics; trichomes

Journal Article.  0 words. 

Subjects: Plant Sciences and Forestry

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