نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشیار گروه علوم گیاهی، دانشکده علوم زیستی، دانشگاه تربیت مدرس

2 دانشیار گروه بیماری های گیاهی، دانشکده کشاورزی، دانشگاه تربیت مدرس

3 دانشگاه تربیت مدرس

4 دانشیار گروه ژنتیک، دانشکده علوم زیستی، دانشگاه تربیت مدرس،

چکیده

کتان سفید (Linum album Kotschy ex Boiss.) یکی از گونه های بومی ایران، دارای پودوفیلوتوکسین و دیگر ترکیبات لیگنانی است. پودوفیلوتوکسین، لیگنانی است که در گونه های گیاهی معدودی حضور دارد و به دلیل خواص ضد سرطانی اهمیت دارویی زیادی پیدا کرده است. دست ورزی محیط های کشت سلولی با الیسیتورها یکی از راهکارهای مهم جهت القای تولید متابولیت های ارزشمند می باشد. در این پژوهش، دیواره جدا شده قارچ Fusarium graminearum پس از تعیین غلظت بهینه، در روز 7 بعد از واکشت به کشت سلولی کتان سفید با غلظت 1 درصد (v/v) اضافه گردید. پس از برداشت سلول ها در روزهای 3 و 5 و 7 بعد از تیمار، میزان ترکیبات لیگنانی با HPLC بررسی گردید. همچنین میزان ترکیبات فنلی، فلاونوئیدی، فلاوونول ها و لیگنین بررسی شد. نتایج نشان داد میزان پودوفیلوتوکسین و لاریسی رزینول بعد از تیمار در مقایسه با نمونه های شاهد افزایش قابل ملاحظه ای داشته است. میزان ترکیبات فنلی در روز 5 بعد از تیمار و میزان ترکیبات فلاونوئیدی و فلاونولی در روز 3 و 7 بعد از تیمار افزایش داشته است. لیگنین نیز به عنوان یک ترکیب دفاعی بعد از تیمار با دیواره قارچ افزایش یافت.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of Fusarium graminearum cell wall on lignans and phenolic compounds in cell culture of Linum album

نویسندگان [English]

  • Jaleh Tahsili 1
  • Mozafar Sharifi 2
  • Naser Safaei 3
  • Mehrdad Behmanesh 4

1 MSc. graduated Department of Plant Biology, Faculty of Biological Sciences, Tarbiat Modares University

2 Assistant professor Department of Plant Pathology, Faculty of Agriculture, Tarbiat Modares University

4 Research assistant Department of Genetic, Faculty of Biological Sciences, Tarbiat Modares University

چکیده [English]

Linum album Kotschy ex Boiss., one of endemic species in Iran, produces podophyllotoxin (PTOX) and other lignans. Podophyllotoxin which occurs in a few plant species and has pharmacological significance for it's anticancer activities. Manipulation of cell culture media by elicitors is one of the important strategies for inducing secondary metabolism and production of valuable metabolites. In this study, first we isolated cell wall of Fusarium graminearumas described by Di Pietro et al. (2009). We investigated the different concentrations effect of fungal cell wall on cell growth and PTOX and lariciresinol production in cell suspension cultures of L. album. Then, the optimal concentration of fungal cell wall (1% v/v) was selected for further experiments and thus after 7 days of pre-culture, the cells were treated with 1 % (v/v) of cell wall. Lignan analysis with HPLC demonstrated that production of podophyllotoxin and lariciresinol significantly increased. Also phenolic compounds have reached the most accumulation at 5 day after treatment. But flavnoids and flavones had increased at 3 and 7 day after treatment. As defensive compound, lignin increased after treatment.

کلیدواژه‌ها [English]

  • : Linum album
  • Cell culture
  • fungal elicitors
  • Lignans
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