The Cadmium Toxicity in Helianthus annuus can be Modulated by Endosymbiotic Fungus (Piriformospora indica)
محل انتشار: مجله منابع ژنتیک، دوره: 4، شماره: 1
سال انتشار: 1397
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 379
فایل این مقاله در 12 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_SGR-4-1_006
تاریخ نمایه سازی: 3 دی 1398
چکیده مقاله:
Cadmium (Cd), as a widespread metal pollutant, readily accumulates in the food chain due to its easy absorption and high mobility. The endophytic fungi are cosmopolitan microorganisms that occur widely in association with plants in a heavy metal stress environment. A current pot experiment was conducted to evaluate the influence of Piriformospora indica, as a root endosymbiotic fungus, on the biomass and biochemical responses of sunflower cv. Zaria under excessive Cd concentrations (0, 40, 80 and 120 mg Cd/kg) in the soil, in a 2 × 4 factorial randomized block design in five replicates. In response to increasing Cd levels in soil, root colonization, growth parameters, and total chlorophyll and carotenoids contents were significantly reduced (P < 0.05), whereas root and leaf Cd accumulation, malondialdehyde (MDA) amount and the antioxidant enzymes activities of catalase (CAT), guaiacol peroxidase (POD), ascorbate peroxidase (APX) and superoxide dismutase (SOD) were increased (P < 0.05). Under different levels of Cd in soil, presence of P. indica (in inoculated sunflowers) had a significant increase (P < 0.05) on growth rate, photosynthesis pigments content, root Cd accumulation, and activities of CAT, POD, APX and SOD in compare to absence of P. indica (in non-inoculated ones). Also, P. indica-inoculated plants showed a reduced MDA concentration and leaf Cd accumulation than un-inoculated sunflowers. The results indicated that P. indica, as an appropriate fungal association, can improve tolerance of sunflower to Cd toxicity through increased levels of photosynthesis pigments and antioxidants, and reduced Cd accumulation and MDA content of the leaf. Therefore, this root endophyte can be modulated cadmium toxicity in Helianthus annuus under excessive cadmium in soil, and recommended as a complement crop-growing strategy in the fields under Cd-contaminated soils, for other studies.
کلیدواژه ها:
نویسندگان
Saleh Shahabivand
Department of Biology, Faculty of Science, University of Maragheh, Maragheh, Iran
Azar Parvaneh
Department of Biology, Faculty of Science, University of Maragheh, Maragheh, Iran
Ali Asghar Aliloo
Department of Agronomy, Faculty of Agriculture, University of Maragheh, Maragheh, Iran University of Maragheh, Madar Square, Golshahr, Maragheh, Iran
مراجع و منابع این مقاله:
لیست زیر مراجع و منابع استفاده شده در این مقاله را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود مقاله لینک شده اند :