UV-B induces cell death in the lichen Physcia semipinnata (J.F.Gmel)

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Turkish Journal of Biology
Volume:35 Issue:2
UV-B induces cell death in the lichen Physcia semipinnata (J.F.Gmel)

UV-B induces cell death in the lichen Physcia semipinnata (J.F.Gmel)

Authors : Dilek ÜNAL, Yiğit UYANIKGİL

Pages : 137-144

View : 18 | Download : 12

Publication Date : 2011-12-01

Article Type : Research Paper

Abstract :We have examined the consequences of Ultraviolet-B insert ignore into journalissuearticles values(UV-B); irradiation in the thallus of the lichen Physcia semipinnata insert ignore into journalissuearticles values(J.F.Gmel); in terms of cell viability and apoptotic-like formation. UV-B induced oligonucleosomal DNA fragmentation was detected by TUNEL assay and this is the first study showing DNA fragmentation in thalli. The intensity of TUNEL-positive cells after exposure to UV-B at doses up to 95.9 J/cm2 was higher in the photobiont layer than the mycobiont layer.
Keywords : Key words TUNEL reaction, acridine orange staining, UV B radiation, lichen

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