TY  - JOUR
TI  - SEASONAL ANTIOXIDANT CAPACITY OF ASPHODELUS AESTIVUS BROT. ROOT TUBERS IN RESPONSE TO ARIDITY FROM DEGRADED MEDITERRANEAN ENVIRONMENTS
AB  - Asphodelus aestivus Brot. (Walter) is the dominant geophyte species on degraded areas of eastern Mediterranean Basin.Because it has a stress-tolerant strategy and it is a competitive ruderal. We studied the activities of antioxidant enzymes(ascorbate peroxidase, APX; superoxide dismutase, SOD; catalase, CAT) in the root tubers of A. aestivus from Bursa, Turkeyover one year. There was a seasonal variation in antioxidant enzyme activities. The CAT and APX showed similar variationmodel in which the activity was highest in July (9.3 ± 2.7 units/mg protein and 141.9 ± 52.7 units/mg protein) and lowest inAugust (1.2 ± 0.6 units/mg protein and 14.5 ± 2.3 units/mg protein). The SOD activity increasing in summer months wasreached up the highest level in late summer (297.6 ± 48.1 units/mg protein). The significant negative correlations were alsofound between enzyme activities and water contents of soils (p<0.05). The increased antioxidant enzyme activities in summerand late summer periods may be a protective and acclimation mechanism against drought stress. These results indicate thatdrought can induce enzymatic antioxidant defence system in A. aestivus and this system may help to this species to spread on degraded Mediterranean environments.
AU  - ARSLAN, Hülya
AU  - AKPINAR, Ayşegül
AU  - SAKAR, Fatma SELCEN
AU  - KIRMIZI, Serap
AU  - GÜLERYÜZ, Gürcan
DO  - 10.18036/aubtdc.417326
PY  - 2019
JO  - Eskişehir Teknik Üniversitesi Bilim ve Teknoloji Dergisi C- yaşam Bilimleri ve Biyoteknoloji (Online)
VL  - 8
IS  - 1
SN  - 2667-4203
SP  - 32
EP  - 39
DB  - TRDizin
UR  - http://search/yayin/detay/390267
ER  -