Annals of Biological Research
Abstract
Author(s): Parisa Rahimzadeh, Siavash Hosseini, Kamalaadin Dilmaghani
The present study was conducted to assess the effects of UV-A and UV-C on some morphological
and physiological parameters of savory (Satureja hortensis L.). Plants were grown in a uniform
environment and after 50 days they were exposed to UV-A and UV-C radiation for 15 and 8 days
respectively. Alterations in growth parameters, photosynthetic pigments, UV absorbing
compounds and protein and carbohydrate contents were measured. UV-C-treated plants showed
a significant decrease in shoot growth, leaf number and shoot fresh and dry weights as well as
leaf protein, leaf carbohydrate, chlorophyll a, b and total and carotenoid contents. Also
treatment with UV-A caused a significant reduction in shoot dry weight, protein and chlorophyll
a and total contents. Notably, no significant difference was observed in the root growth, fresh
dry weight and carbohydrate content by UV-R treatment. In addition, UV exposure resulted in a
significant increase of flavonoid and anthocyanin contents.
