Melatonin-mediated regulation of antioxidant defense system and nutritional balance on cannabis seedlings under overloads of copper and zinc condition

سال انتشار: 1399
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 143

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شناسه ملی سند علمی:

BIOCONF21_1023

تاریخ نمایه سازی: 7 شهریور 1400

چکیده مقاله:

The interactive effects of exogenous melatonin and toxic amounts of zinc and copper were studied on growth parameters, and nutritional balance of cannabis seedlings. Seeds were planted in a completely randomized design with three replicas, were irrigated every other day with complete Hoagland’s nutrient solution. Three weeks after seeds germination, ۳ levels of CuSO۴ (۰, ۵۰ and ۱۵۰μM), ZnSO۴ (۰, ۵۰ and ۱۰۰μM) and their interactions were supplied for ۲ weeks on irrigated solution. During the second week of metal treatments, melatonin added into nutrient solution at two levels of zero or ۵۰μm. Growth parameters, and mineral nutrition were studied after harvest. Overloads of Zn and Cu led to reduced growth parameters and imbalance of minerals nutrients in cannabis seedlings. However, melatonin ۵۰μM alleviated the growth retardation of seedlings under normal condition and heavy metal stress. Ion homeostasis was considerably regulated by melatonin in seedlings under heavy metal stress, as well. Our results support the idea that melatonin, in addition to acting as a powerful antioxidant, it also can be considered as a potent regulator in ion homeostasis of cannabis seedlings under heavy metal toxicity. However, there is still lack of information about the precise mechanism of melatonin action on nutritional balance in plants.

نویسندگان

Hakimeh Oloumi

Department of Ecology, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran

Ali zamani

Department of Ecology, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran

Hossein Mozaffari

Department of Ecology, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran

Mohammad Javad Arvin

Department of Ecology, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran