Leaf Hairs of Olea-Europaea Protect Underlying Tissues against Ultraviolet-B Radiation-Damage
| dc.contributor.author | Karabourniotis, G. | en |
| dc.contributor.author | Kyparissis, A. | en |
| dc.contributor.author | Manetas, Y. | en |
| dc.date.accessioned | 2015-11-24T16:34:58Z | |
| dc.date.available | 2015-11-24T16:34:58Z | |
| dc.identifier.issn | 0098-8472 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/7880 | |
| dc.rights | Default Licence | - |
| dc.subject | chlorophyll fluorescence | en |
| dc.subject | leaf hairs | en |
| dc.subject | olea-europaea | en |
| dc.subject | uv-b radiation | en |
| dc.subject | uv-b | en |
| dc.subject | photosystem-ii | en |
| dc.subject | ultraweak luminescence | en |
| dc.subject | fluorescence induction | en |
| dc.subject | higher-plants | en |
| dc.subject | light | en |
| dc.subject | photosynthesis | en |
| dc.subject | inhibition | en |
| dc.subject | leaves | en |
| dc.subject | chloroplasts | en |
| dc.title | Leaf Hairs of Olea-Europaea Protect Underlying Tissues against Ultraviolet-B Radiation-Damage | en |
| heal.abstract | The photochemical efficiency of photosystem II, as measured by chlorophyll fluorescence induction, was not affected in de-haired olive leaves kept in the dark or intact leaves irradiated with a moderate (3.75 W m-2) ultraviolet-B (UV-B) intensity. In de-haired, UV-B-irradiated leaves, however, the ratio of variable to maximum (F(v)/F(m)) chlorophyll fluorescence declined significantly and irreversibly. Reduction in F(v)/V(m) was associated with an increase in instantaneous and a decrease in maximum (F(m)) fluorescence, indicating perturbation by the UV-B exposure of more than one photosynthetic site. Extensive epidermal browning in de-haired, UV-B irradiated leaves was also observed, indicating possible damage to cell membranes. The results strengthen the hypothesis that leaf hairs protect the underlying tissues against UV-B radiation damage. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.secondary | <Go to ISI>://A1993LN67200001 | - |
| heal.journalName | Environmental and Experimental Botany | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 1993 | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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