بررسی تاثیرات تنش کم آبیبر پارامترهای فتوسنتزی در گیاه مریم گلیاز طریق روش JIP-تست

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه زیست شناسی، دانشگاه آزاد اسلامی، واحد اسلامشهر، اسلامشهر، ایران

2 گروه زیست شناسی، دانشگاه آزاد اسلامی، واحد مرودشت، مرودشت، ایران

3 گروه ژنتیک، دانشکده علوم و فناوری های نوین، واحد تهران پزشکی، دانشگاه آزاد اسلامی، تهران، ایران و مرکز تحقیقات علوم همگرای پزشکی فرهیختگان، بیمارستان فرهیختگان، واحد تهران پزشکی ، دانشگاه آزاد اسلامی، تهران، ایران

چکیده

مقدمه:تنش کم آبی یکی از مهمترین تنش های غیر زیستی است که می تواند بر رشد و نمو گیاهان موثر باشد. گیاه مریم گلی نیز یکی از گیاهان دارویی مهم است که دارای خواص دارویی متعددی می باشد.
روش:در پژوهش حاضر تاثیرات سطوح متفاوت کم آبی شامل 25، 50، 75 و 100 درصد ظرفیت زراعی خاک بر روی پارامترهای فتوسنتزی در دو گونه حساس و مقاوم گیاه مریم گلی از طریق روش JIP- تست مورد بررسی قرار گرفت.
یافته ها:نتایج این تحقیق نشان داد که با افزایش تنش کم آبی از میزان مراکز فعال واکنش (RC/CS)، میزان انتقال الکترون در سیستم فتوسنتزی (ETo/CS)،کارایی واکنش های نوری در فتوسیستم II (φPo /(1- φPo ))، کارایی واکنش های بیوشیمیاییدر زنجیره انتقال الکترون (ψo /(1- ψo ))، کارایی رسیدن الکترون به فتوسیستم I(δRo/(1- δRo )) و شاخص کارایی انتقال الکترون از ابتدای فتوسیستم II تا انتهایI (PI total)کاسته شده است و میزان اتلاف انرژی در کلروفیل های آنتن (DIo/CS)افزایش یافته است.
نتیجه­گیری: نتایج این تحقیق نشان داد که تاثیرات منفی تنش کم آبی بر این پارامترها در گونه حساس مریم گلی (Salvia officinallis) بیش از گونه مقاوم (Salvia virgata) بوده است.

کلیدواژه‌ها


عنوان مقاله [English]

Investigation the effects of water defficency stress on the photosynthetic parameters in Salvia plant probed by JIP test

نویسندگان [English]

  • neda bagheenayat 1
  • giti barzin 1
  • Mojtaba Jafarinia 2
  • leila pishkar 1
  • maliheh entezari 3
1 Department of Biology, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
2 Department of Biology, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran
3 Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran .& Farhikhtegan Medical Convergence sciences Research Center, Farhikhtegan Hospital Tehran Medical sciences ,Islamic Azad University,Tehran,Iran.
چکیده [English]

Water defficency stress is one of the most important abiotic stresses that can affect plant growth and development. Salvia is also one of the important medicinal plants that has several medicinal properties. In the present study, the effects of different levels of water deficincy including 25, 50, 75 and 100% of soil field capacity on photosynthetic parameters in two sensitive and resistant species of salvia were investigated by JIP-test method. The results of this study showed that with increasing water defficency stress the number of active reaction centers (RC / CS), the amount of electron transfer in the photosynthetic system (ETo / CS), the efficiency of light reactions in photosystem II (φPo / (-1 φPo)) , Efficiency of biochemical reactions in electron transfer chain (ψo / (1- ψo)), efficiency of electron delivery to photosystem I (δRo / (1- δRo)) and performance index of electron transfer from the beginning of photosystem II to the end of I (PI total) has been reduced and the amount of energy loss in antenna chlorophylls (DIo / CS) has increased. The results of this study also showed that the negative effects of water defficency stress on these parameters in the susceptible species of Salvia (Salvia officinallis) were more than the resistant species (Salvia virgata).

کلیدواژه‌ها [English]

  • Chlorophyll a
  • Fluorescence
  • Salvia
  • Water defficency
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دوره 15، شماره 52
اردیبهشت 1401
صفحه 15-28
  • تاریخ دریافت: 01 آبان 1399
  • تاریخ بازنگری: 28 اسفند 1399
  • تاریخ پذیرش: 10 شهریور 1400
  • تاریخ اولین انتشار: 01 اردیبهشت 1401