بررسی فعالیت آنزیم های آنتی اکسیدان راش شرقی نسبت به تغییرات محیطی در طول گرادیان ارتفاعی (مطالعه موردی: جنگلهای گیلان، ماسال)

نویسندگان

دانشگاه گیلان

چکیده
به منظور درک مکانیسم سازگاری اکوفیزیولوژی راش شرقی Fagus orientalis Lipesky نسبت به تغییرات ارتفاعی، میزان فعالیت آنزیم های آنتی اکسیدانی شامل پراکسیداز، کاتالاز و آسکوربات پراکسیداز در برگ های درختان راش شرقی در ارتفاعات مختلف (700 متر، 1200 متر و 170 متر ارتفاع از سطح دریا) در جنگلهای گیلان مورد مطالعه قرار گرفت. نمونه برداری از برگ های واقع در نمیه شمالی و جنوبی تاج درختان سالم و بالغ راش شرقی انجام شد. نتایج تجزیه واریانس نشان داد که اختلاف معنی داری در بین و درون جمعیت برای فعالیت آنزیم های کاتالاز و پراکسیداز در سطح احتمال 05/0 وجود داشت و با افزایش ارتفاع، میزان فعالیت کاتالاز و پراکسیداز افزایش یافت، اما فعالیت آنزیم آسکوربات پراکسیداز ابتدا به صورت افزایشی و از ارتفاع میانه با افزایش ارتفاع میزان فعالیت آن کاهش یافت. همچنین نتایج نشان داد که فعالیت آنزیمی پراکسیداز و کاتالاز در برگ های جمع آوری شده از نمیه شمالی درختان نسبت به برگ های جمع آوری شده از نیمه جنوبی درختان بیشتر بود.

کلیدواژه‌ها


عنوان مقاله English

Study of antioxidant enzymes activity of Fagus orientalis Lipesk to environmental changes along altitude gradient (Case Study: Guilan forests, Masal)

نویسندگان English

Mahboobe Mohebi Bijarpas
Teymuor Rostami Shahraji
Habiboala samizadeh Lahiji
University of Guilan
چکیده English

To understand the Eco physiological adaptation mechanisms of Fagus orientalis Lipesk to altitude changes, the activities of Peroxidase (POD), Catalase (CAT), and Ascorbate peroxidase (APX) in leaves of Fagus orientalis in different altitudes (A1: 700 m, A2: 1200 m, A3: 1700 m above sea level) Was studied in the forests of Guilan. The sampling of leaves was collected from southern and northern parts of the crown of healthy and mature trees. The results of analysis variance showed that there was a significant difference between and within the population for the activity of catalase and peroxidase enzymes at the probability level of 0.05 and with increasing altitude, the activity of catalase and peroxidase were increased but the activity of Ascorbate peroxidase enzyme was initially increased and its level of activity decreased from the middle altitude with increasing altitude. Also, the results showed that the enzymatic activity of peroxidase and catalase in the northern leaves was more than the southern leaves that collected in crown of the trees.

کلیدواژه‌ها English

Reactive Oxygen
Climate Change
Adaptability
Antioxidant System
Physicoecological Indices
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  • تاریخ دریافت 18 خرداد 1405
  • تاریخ انتشار 18 خرداد 1405