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الگوی بیان آنزیم‌های مؤثر در کنترل زیستی به‌وسیله برخی جدایه‌های وحشی و جهش‌یافته قارچ Trichoderma viride

نوع مقاله: مقاله کامل

نویسندگان

1 دانشجوی سابق دکتری بیماری‌شناسی قارچ‌شناسی، گروه گیاهپزشکی، دانشکده تولید گیاهی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران

2 استادیار گروه گیاه‌پزشکی و نگهداری مواد غذایی، پژوهشکده کشاورزی هسته‌ای، پژوهشگاه علوم و فنون هسته‌ای، سازمان انرژی اتمی ایران

3 دانشیار گروه گیاهپزشکی، دانشکده تولیدگیاهی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران

چکیده

این پژوهش با هدف ایجاد جهش در قارچ Trichoderma virideبه وسیله پرتو گاما و سپس بررسی افزایش یا کاهش بیان آنزیم‌های سلولاز و کیتیناز در جدایه­ های جهش­ یافته نسبت به جدایه وحشی صورت گرفت. القای جهش با دز بهینه 250 گری و با استفاده از پرتوگاما انجام شد. پروفایل پروتئینی آنزیم­های تولید شده کلیه جدایه­ها با آزمون الکتروفورز SDS-PAGE مورد بررسی قرار گرفت. در نهایت الگوی پروتئوم گونه T. virideبه همراه جدایه جهش­یافته Tv M21 با سوبسترای کیتین کلوئیدی با تکنیک الکتروفورز دوبعدی و نرم­افزار ImageMaster 2D Platinum ارزیابی شد. بیشترین تنوع در تولید آنزیم­های سلولازی در جدایه­های جهش­یافته نسبت به جدایه وحشی در Tv M21، Tv M10، Tv M16 و Tv M14 و بیشترین تنوع در تولید آنزیم­های کیتینازی در جدایه­های جهش­یافته نسبت به جدایه وحشی در Tv M21، Tv M1 و Tv M4 مشاهده شد. الگوی پروتئوم نشان داد، لکه­های پروتئینی جدایه­های جهش­یافته در مقایسه با جدایه­های وحشی به‌صورت کمی و کیفی متفاوت هستند. نتایج نشان داد، اشعه گاما می‌تواند تغییر در میزان تولید آنزیم­های خارج سلولی و فعالیت آن­ها را سبب شود. این موضوع می­تواند در مدیریت بیماری­های گیاهی و بهره­وری صنعتی از آنزیم­های مورد مطالعه مد نظر قرار گیرد.

کلیدواژه‌ها

موضوعات


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