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تأثیر سلنیوم بر برخی ویژگی‌های فیزیولوژیک گیاه دارویی بادرنجبویه (Melissa officinalis L.) | ||
| تحقیقات گیاهان دارویی و معطر ایران | ||
| مقاله 14، دوره 32، شماره 4 - شماره پیاپی 78، آبان 1395، صفحه 698-715 اصل مقاله (418.01 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijmapr.2016.107141 | ||
| نویسندگان | ||
| قادر حبیبی* 1؛ پروین قربانزاده2؛ معصومه عابدینی1 | ||
| 1استادیار، گروه زیست‌شناسی، دانشگاه پیام نور، ایران | ||
| 2کارشناس ارشد، گروه زیست‌شناسی، دانشگاه پیام نور، ایران | ||
| چکیده | ||
| در این تحقیق، تأثیر کاربرد غلظت‌های مختلف سلنات سدیم (1/0، 1 و 10 میلی‌گرم بر لیتر) در محیط کشت هیدروپونیک و کاربرد برگی 10 میلی‌گرم بر لیتر این عنصر در شرایط مزرعه بر روی برخی از ویژگی‌های فیزیولوژیک گیاه بادرنجبویه (Melissa officinalis L.) مورد مطالعه قرار گرفت. کاربرد سلنیوم در غلظت 10 میلی‌گرم بر لیتر باعث کاهش وزن خشک شاخساره و ریشه در شرایط کشت هیدروپونیک شد. مهار رشد در این غلظت از سلنیوم نشان داد که افزایش غلظت کلروفیل a و b و فعالیت آنزیم کاتالاز در تیمار 10 میلی‌گرم بر لیتر سلنیوم نتوانستند مانع از افزایش مالون دی‌آلدئید به‌عنوان شاخص پراکسیداسیون غشاها در این گیاه شوند. ولی کاربرد غلظت‌های 1/0 و 1 میلی‌گرم بر لیتر سلنیوم در کشت هیدروپونیک نه تنها باعث اُفت رشد بادرنجبویه نشد، بلکه منجر به افزایش ذخیره سلنیوم در شاخساره شد. در مقایسه، نتایج آزمایش مزرعه نشان داد که همان غلظت 10 میلی‌گرم بر لیتر که در کاربرد ریشه‌ای در کشت هیدروپونیک باعث مهار رشد گردید، در کاربرد برگی توانست مقدار سلنیوم دانه و شاخساره و بیومس شاخساره را افزایش دهد. همچنین کاربرد برگی سلنیوم توانست باعث افزایش فعالیت آنزیم فنیل‌آلانین آمونیالیاز و افزایش غلظت فنل‌ها به‌عنوان ترکیب‌های آنتی‌اکسیدان، در برگها شود. نتایج این تحقیق نشان داد که محلول‌پاشی برگی سلنیوم در مقایسه با تغذیه ریشه‌ای آن از طریق کشت هیدروپونیک، رشد اندام هوایی، مقدار سلنیوم و فنل را در گیاه دارویی بادرنجبویه بیشتر بهبود می‌بخشد. | ||
| کلیدواژه‌ها | ||
| بادرنجبویه (Melissa officinalis L.)؛ پراکسیداسیون لیپیدها؛ سلنات سدیم؛ فنیل‌آلانین آمونیالیاز؛ کاتالاز | ||
| عنوان مقاله [English] | ||
| Effects of selenium application on physiological parameters of Melissa officinalis L. plants | ||
| نویسندگان [English] | ||
| Gh. Habibi1؛ P. Ghorbanzade2؛ M. Abedini1 | ||
| 1Department of Biology, Payame Noor University, Iran | ||
| 2Department of Biology, Payame Noor University (PNU), Iran | ||
| چکیده [English] | ||
| In this study, the influence of hydroponically applied (0.1, 1 and 10mg l-1) and foliar-applied (10mg l-1) Na2SeO3 on the some physiological characteristics of Melissa officinalis L. was investigated. The results indicated that the root application of 10mg l-1 Se could decrease shoot fresh and dry mass, and caused an improved lipid peroxidation in hydroponically grown lemon balm. Se supply at 10mg l-1 in lemon balm exhibited a significantly positive effect on accumulation of total chlorophyll, and raised the activity of catalase, but these mechanisms could not ameliorate the negative effect of Se toxicity on productivity, as was indicated by a higher malondialdehyde concentration. Our results indicated that for biofortification program with lemon balm, the application of Se as selenate at low concentrations (0.1 and 1mg l-1) would be more beneficial because it favored shoot biomass growth. In contrast, the results from field experiment indicated that foliar-applied Se (10mg l-1) was favorable for biomass accumulation in lemon balm. In this work, the foliar application of selenium induced higher activity of phenylalanine ammonia-lyase as well as the higher total phenol content, which appear to act as protective compounds. It was concluded that foliar applications to lemon balm at 10mg Se l-1 can effectively cause a significantly higher growth rate, improve Se content and phenolic compounds. | ||
| کلیدواژه‌ها [English] | ||
| lemon balm (Melissa officinalis L.), Lipid peroxidation, sodium selenate, phenylalanine ammonia-lyase, catalase | ||
| مراجع | ||
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