Salicornia europaea tolerates effect of soil salinity through flavonoid production
محل انتشار: سومین همایش سراسری کشاورزی و منابع طبیعی پایدار
سال انتشار: 1394
نوع سند: مقاله کنفرانسی
زبان: فارسی
مشاهده: 463
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شناسه ملی سند علمی:
NACONF03_523
تاریخ نمایه سازی: 30 دی 1394
چکیده مقاله:
With increasing global warming, arid lands and inland water bodies, such as Uromia Lake, have become vulnerable to increased salinity. This has enabled many halophyte plants, such as Salicornia europaea to advance in dried out lake sediments. Salinity is one of the major environmental factors that limit plant growth and productivity.It leads to osmotic stress, ion toxicity, nutrient deficiency and production of reactive oxygen species(ROS). In this research, physiological aspects of non-enzymatic anti-oxidants production contributing to S. europaea to tolerate increased salinity in Uromia Lake is investigated. Samples of S. europaea and rhizosphere soil were collected from 5 locations in Uromia Lake bed. Content of Malondialdehyde (MDA), as lipid peroxidation indicator and total flavonoids were measured by De Vos method and Krizek method,respectively. Although salinity rate differed among stations, no significant differences were observed in MDA contents, but trends of flavonoids production correlated strongly with the salinity trend. Flavonoids act in plants as antioxidants, antimicrobials, photoreceptors, visual attractors, feeding repellants, and for light screening. However, most interest has been devoted to the antioxidant activity of flavonoids, which is due to their ability to reduce free radical formation and to scavenge free radicals. It is concluded that S.europaea can tolerate ill-effects of ROSs produced as a result of increased salinity by increasing its flavonoid production and preservation of its cell membrane integrity
کلیدواژه ها:
نویسندگان
Daviran M
Department of Plant Biology, Faculty of Biological Science, TarbiatModares University (TMU), POB ۱۴۱۱۵-۱۵۴, Tehran-Iran
H. Zare maivan
Department of Plant Biology, Faculty of Biological Science, TarbiatModares University (TMU), POB ۱۴۱۱۵-۱۵۴, Tehran-Iran
Dr.f. Ghanati
Department of Plant Biology, Faculty of Biological Science, TarbiatModares University (TMU), POB ۱۴۱۱۵-۱۵۴, Tehran-Iran