بررسی کاربرد اسید جاسمونیک و اسید آبسایزیک بر متابولیسم گیاه توت فرنگی در شرایط تنش شوری

نوع مقاله: مقاله کامل

نویسنده

استادیار، دانشکده کشاورزی، دانشگاه جهرم، فارس، ایران

چکیده

این پژوهش با هدف ارزیابی اثر اسید جاسمونیک و اسید آبسایزیک در رژیم­های مختلف تنش شوری با نمک کلرید­سدیم (NaCl)، روی تغییرات متابولیکی برگ گیاه توت­فرنگی از دو رقم ʼکردستانʻ و ʼکوئین­الیزاʻ در قالب طرح کاملا تصادفی به انجام رسید. کاهش اثرات نامطلوب تنش ناگهانی نمک کلرید­سدیم و تنش شوری تدریجی با NaCl با افزایش مقدار فنول کل و ظرفیت آنتی­اکسیدانی کل مشاهده شد. اسید آبسایزیک و اسید جاسمونیک باعث افزایش معنی­دار مقدار کل پروتئین محلول در برگ­های رقم ʼکردستانʻ در شرایط بدون تنش و تنش تدریجی NaCl شدند. نقش اسید جاسمونیک و اسید آبسایزیک در افزایش اسید آسپارتیک در تنش تدریجی NaCl قابل­مشاهده بود. تنش ناگهانی NaCl افزایش معنی­دار تیروزین را القا کرد و کاربرد هر دو هورمون سبب افزایش مقدار اسیدهای آمینه آسپاراژین، آلانین، هیستیدین و GABA شدند. نتایج این مطالعه نشان داد که اسید جاسمونیک و اسید آبسایزیک، هورمون­های مهم تنش هستند و کاربرد اسید آبسایزیک و غلظت­های مختلف اسید جاسمونیک، باعث فعال­سازی مکانیزم دفاعی گیاه توت­فرنگی در برابر تنش شوری می­شود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effects of Jasmonic acid and abscisic acid on metabolism of strawberry under NaCl stress

نویسنده [English]

  • Salma Jamalian
Assistant Professor, College of Agriculture, Jahrom University, Fars, Iran
چکیده [English]

The aim of this research was to evaluate the effect of application of exogenous jasmonic acid (JA) and abscisic acid (ABA) at different salinity regimes, on primary and secondary metabolic changes of 'Kurdistan' and 'Queen Elisa' strawberry leaves. The reduction of adverse effects of sudden salt stress and gradual salt stress regime by increasing total phenolic content and total antioxidant capacity, has been confirmed in 'Kurdistan' and 'Queen Elisa' after application of JA and ABA. The presence of the two hormones under non-saline conditions significantly increased total soluble protein content but less than 10 mM L-1 of sudden salt stress adverse effects were noticed. Abscisic acid and JA caused a clear increase in total soluble proteins of 'Kurdistan' leaves at both gradual salt stress and non-saline conditions. The role of JA and ABA in aspartic acid increment at gradual salt regime was notable. Salt stress induced tyrosine increase and both hormones enhanced asparagine, alanine, histidine, and GABA contents, respectively. The study reveals that JA and ABA are important plant stress hormones and application of ABA accompanied by different JA concentrations activated the protective mechanism of the strawberry plant against NaCl stress.

کلیدواژه‌ها [English]

  • Abscisic acid
  • Jasmonic acid
  • primary metabolites
  • salinity
  • secondary metabolites
  • strawberry
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