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Journal Info

Title: Studia Universitatis Vasile Goldis, Seria Stiintele Vietii (Life Sciences Series)
Abbreviated title: Studia Univ. VG, SSV
Publisher: "Vasile Goldis" University Press
Owner: Western University "Vasile Goldis" Arad, Romania
ISSN: 1584-2363
e-ISSN: 1842-7863
ISSN-L: 1584-2363

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The effect of UVB stress on photosynthesis in eruca sativa Print E-mail
Written by Mladin L., Prodan N., Grec A., Sicora C.   
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Article Title: The effect of UVB stress on photosynthesis in eruca sativa
Authors: Mladin L., Prodan N., Grec A., Sicora C.
Affiliation: 1Biological Research Centre Jibou
2.“Vasile Goldis” Western University of Arad, Zalau Branch;
3Babes-Bolyai University, Faculty of Biology and Geography
Abstract: Climate changes can determine an interruption in normal functioning of ecosystems, an increased risk of affection or even the extinction of some species. Temperature, excessive light and CO2concentration are the main abiotic stress factors in plants that affect directly the process of photosynthesis.Thedamages produced by UVB radiations are: CO2 deficiency, low levels of chlorophylls, damages on PS I and PS II etc. Using chlorophyll fluorescence for studying photosynthesis is one of the efficient methods used by physiologists and ecophysiologists. With the modern fluorimeters chlorophyll fluorescence measurements can be done, even in the laboratory or in the field. The measurements of chlorophyll fluorescence on Eruca sativa, under normal or UVB stress conditions were done with the MONI PAM fluorimeter. Reported on the control samples, the plants treated with high intensities of UVB radiations, can’t induce the reparatory mechanisms for a normal photosynthesis, which fact conduces to the death of the plants. The samples treated with low intensities of UVB radiations could induce these reparatory mechanisms and plants were growing normally.
Keywords: photosynthesis, climate change, chlorophyll fluorescence, PS II, Eruca sativa.
*Correspondence: LiaMladin, Biological Research Centre Jibou, This e-mail address is being protected from spambots. You need JavaScript enabled to view it