Plant Process and Function
فرآیند و کارکرد گیاهی
Journal of Plant Process and Function
Agriculture
http://jispp.iut.ac.ir
1
admin
2322-2727
2383-3688
10.22034
fa
jalali
1400
9
1
gregorian
2021
12
1
10
45
online
1
fulltext
fa
اثر غلظتهای مختلف پیرن بر مقدار رنگیزههای فتوسنتزی و فعالیت آنزیمهای پاداکساینده در گیاه آفتابگردان (Helianthus annuus)
The effect of different concentrations of pyrene on photosynthetic pigment content and antioxidant enzyme activities in sunflower (Helianthus annuus)
سایر موارد
others
پژوهشي
Research
<span style="font-size:12pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span style="font-family:"Times New Roman","serif""><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">روند</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">صنعتی</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">شدن</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">و</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">افزایش</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">جمعیت</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">از</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">دلایل عمده</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">افزایش</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">آلودگی محیطزیست با</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">هیدروکربن­های آروماتیک چند­حلقهای میباشد. حضور</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">این</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">ترکیبات</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">در</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">محیط</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">رشد</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">گیاهان،</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">سبب</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">بروز</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">انواع</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">تنش</span></span></span></b><b><span dir="LTR" style="font-size:9.0pt"><span style="font-family:"Arial","sans-serif""><span style="color:black">­</span></span></span></b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">ها</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">و تحت تاثیر قرار گرفتن</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">رشد آنها</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">میشود. </span></span></span></b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">گیاهان میتوانند این ترکیبات را از آب و خاک جذب کنند، بنابراین این مواد می­توانند اثرات فیزیولوژیک و بیوشیمیایی مختلف بر گیاهان داشته باشند.</span></span></span></b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black"> از سوی دیگر، </span></span></span></b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">گیاهان اولین حلقه از زنجیره­های غذائی می­باشند و هر گونه تاثیر زیانبار بر آنها، حیات و سلامت سایر موجودات زنده را به خطر می اندازد</span></span></span></b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">. از این رو در</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">این</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">تحقیق</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">اثر</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">غلظت­های 0، </span></span></span></b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">50 و</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">100 میلی­گرم بر لیتر </span></span></span></b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">از</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">پیرن</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">بر غلظت رنگیزه</span></span></span></b><b><span dir="LTR" style="font-size:9.0pt"><span style="font-family:"Arial","sans-serif""><span style="color:black">­</span></span></span></b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">های</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">فتوسنتزی،</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">فعالیت</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">برخی</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">آنزیم</span></span></span></b><b><span dir="LTR" style="font-size:9.0pt"><span style="font-family:"Arial","sans-serif""><span style="color:black">­</span></span></span></b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">های</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">پاداکساینده،</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">محتوای مالون­دی­آلدئید و پراکسید­هیدروژن گیاه</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">آفتابگردان</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">مورد بررسی قرار گرفت. </span></span></span></b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">برای این هدف گیاهچه­های 50 روزه تحت تیمارهای مختلف پیرن قرار گرفتند و شاخص­های مورد نظر اندازه­گیری شدند. </span></span></span></b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">پیرن سبب کاهش معنی­دار در غلظت کلروفیل­ها، فعالیت آنزیم</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">کاتالاز، غلظت پراکسید­هیدروژن و</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">آنتوسیانین­ها در مقایسه با شاهد</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">گردید. از طرف دیگر، پس از تیمار پیرن غلظت کاروتنوئیدهای</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">گیاه، فعالیت</span></span></span></b><b> </b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">آنزیم</span></span></span></b><b><span dir="LTR" style="font-size:9.0pt"><span style="font-family:"Arial","sans-serif""><span style="color:black">­</span></span></span></b><b><span lang="FA" style="font-size:11.0pt"><span style="font-family:"B Lotus""><span style="color:black">های سوپراکسید­دیسموتاز، پراکسیداز و همچنین شاخص مالون­دی­آلدﺋید در ریشه و اندام هوایی گیاه آفتابگردان افزایش یافت. طبق نتایج این تحقیق، پیرن احتمالا با افزایش پراکسیداسیون لیپیدها، عامل تنش اکسیداتیو و در نتیجه کاهش مقدار رنگیزه­های فتوسنتزی و در نهایت بیومس و رشد گیاه می­باشد. </span></span></span></b><b><span dir="LTR" style="font-size:9.0pt"><span style="font-family:"Arial","sans-serif""><span style="color:black"></span></span></span></b></span></span></span></span>
<span style="font-size:12pt"><span style="tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="font-family:"Times New Roman","serif""><span style="font-size:11.0pt">World industrialization and population growth are the main reasons for the increase of environmental contamination with aromatic hydrocarbons. The presence of these compounds in the environment leads to a variety of stresses in plants and finally reduces their growth. Pyrene is one of the major toxic contaminants belonging to polycyclic aromatic hydrocarbons. Hence, in this research, the effect of 50 and 100 ppm of pyrene on growth indices, photosynthetic pigment contents, the activity of some antioxidant enzymes, malondialdehyde content, and amount of hydrogen peroxide in sunflower were examined. Pyrene significantly reduced chlorophyll, and anthocyanin contents, catalase activity, as well as hydrogen peroxide content compared to the control, while the amount of plant carotenoids, the activity of superoxide dismutase and peroxidase enzymes as well as malondialdehyde content were increased in the roots and shoots of sunflower. Based on the obtained results, pyrene probably caused an oxidative stress and lipid peroxidation that eventually reduced photosynthetic pigments and plant growth. </span></span></span></span>
آفتابگردان, آنزیم های پاداکساینده, پیرن, رنگیزه های فتوسنتزی
Sunflower, Antioxidant enzymes, Pyrene, Photosynthetic pigments
175
188
http://jispp.iut.ac.ir/browse.php?a_code=A-10-765-2&slc_lang=fa&sid=1
Maryam
Nemati
مریم
نعمتی
maryam.n1362@gmail.com