بررسی اثر تنش شوری بر روی الگوی پروتئوم برگ در گندم Triticum boeoticum

نوع مقاله : علمی - پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد اصلاح نباتات، گروه بیوتکنولوژی، پژوهشکده علوم محیطی، پژوهشگاه علوم و تکنولوژی پیشرفته و علوم محیطی دانشگاه تحصیلات تکمیلی صنعتی و فناوری پیشرفته، کرمان

2 استادیار گروه بیوتکنولوژی، پژوهشکده علوم محیطی، پژوهشگاه علوم و تکنولوژی پیشرفته و علوم محیطی دانشگاه تحصیلات تکمیلی صنعتی و فناوری پیشرفته، کرمان

3 دانشیار اصلاح نباتات، گروه بیوتکنولوژی، دانشکده کشاورزی، دانشگاه شهید باهنر، کرمان

4 دانشیار، گروه بیوتکنولوژی، پژوهشکده علوم محیطی، پژوهشگاه علوم و تکنولوژی پیشرفته و علوم محیطی دانشگاه تحصیلات تکمیلی صنعتی و فناوری پیشرفته، کرمان

5 استادیار بیوشیمی، گروه بیوتکنولوژی، پژوهشکده علوم محیطی، پژوهشگاه علوم و تکنولوژی پیشرفته و علوم محیطی، دانشگاه تحصیلات تکمیلی صنعتی و فناوری پیشرفته، کرمان

6 کارشناس ارشد اصلاح نباتات، گروه اصلاح نباتات، دانشکده کشاورزی، دانشگاه تهران، کرج

چکیده

گیاهان وحشی خویشاوند گیاهان زراعی منابع مهمی برای یافتن ژن ­های اعطاءکننده تحمل به تنش شوری هستند. در این مطالعه ده توده مختلف گندم بوئتیکوم در گلخانه به­صورت آزمایش فاکتوریل در قالب طرح کاملاً تصادفی کشت گردیدند. در مرحله سه برگی تنش شوری در دو سطح صفر و 150 میلی­ مولار اعمال و بعد از 15 روز نمونه ­برداری از پهنک جوان ترین برگ توسعه­ یافته انجام گرفت. یون‌های سدیم و پتاسیم در هر نمونه اندازه ­گیری و سپس متحمل‌ترین جمعیت براساس غلظت یون سدیم و صفت K+/Na+  مشخص شد. نمونه حاصل از گندم متحمل برای انجام الکتروفورز دو­بعدی مورد استفاده قرار گرفت. پروتئین‌ها پس از استخراج ابتدا با استفاده از نوارهای IPG با pH 3-10 براساس نقطه ایزوالکتریک و سپس در بعد دوم با استفاده از SDS-PAGE براساس وزن مولکولی جداسازی گردیدند. نتایج نشان داد که دو توده C11 و C7 جمع­ آوری شده از مناطق سقز و کامیاران متحمل‌ترین و دو توده B2 و C1 جمع­آوری شده از مناطق هرسین و سنندج حساس­ترین بودند. براساس صفات فیزیولوژیک نمونه C11 برای انجام پروتئومیکس انتخاب گردید. نتایج نشان داد که تعداد 177 لکه تکرارپذیر در ژل‌ها شناسایی و مورد تجزیه آماری قرار گرفتند. از این تعداد 13 لکه تحت شرایط تنش شوری تغییر بیان نشان دادند که از بین آنها 8 لکه (61/5%) افزایش بیان و 5 لکه (38/5%) کاهش بیان نشان دادند. این بدان معنی است که C11 با تغییرات در بیان ژن‌های پاسخ­ دهنده سعی در مقابله با تنش شوری 150 میلی ­مولاری و تحمل آن را داشته است. 

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Investigation of Salinity Effect on Leaf Proteome Pattern of Triticum boeoticum

نویسندگان [English]

  • Najmeh Sadat Alavi 1
  • Mahmood Maleki 2
  • Shahram Pourseiedi 3
  • Mehdi Rahimi 2
  • Amin Baghizadeh 4
  • Ali Riahi Medvar 5
  • Abdol-Rahman Rasoulnia 6
1 M.Sc. Student of Plant Breeding, Department of Biotechnology, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman
2 Assistant Professor, Department of Biotechnology, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman
3 Associate Professor of Plant Breeding, Faculty of Agriculture, Shahid Bahonar University, Kerman
4 Associate Professor, Department of Biotechnology, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman
5 Assistant professor of Biochemistry, Department of Biotechnology, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman
6 M.Sc. of Plant Breeding, Department of Plant Breeding, Faculty of Agriculture,Tehran University, Karaj
چکیده [English]

Wild relatives of crop plants is an important resource for finding the genes conferring tolerance to salinity. In this study, ten different ecotypes of Triticum boeoticum were planted in greenhouse by using factorial experiment based on completely randomized design. Salt stress was applied at the three-leaf stage and at two levels: zero and 150 mM and were sampled after 15 days from newly full developed blade leaf. The concentration of sodium and potassium were measured in each sample and after that the tolerant ecotype was determined based on concentration of Na+ and K+/Na+ trait. Leaf sample of tolerant ecotype were used for two dimensional electrophoresis. Extracted proteins first isolated based on isoelectric point by using IPG strip with pH 3-10 and then isolated based on molecular weight in the second dimension. The result showed that C11 and C7 that collected from Saghez and Kamiaran respectively were most tolerant populations. Both of B2 and C1 that collected from Harsin and Sanandaj respectively were most sensitive populations. Based on physiological traits, sample C11 was selected for proteomics. According to the proteomics results, the number of repetitive 177 gel spots were identified and statistically analyzed. From total spots, 13 spots showed differential expression under salt stress, from these, the expression of 8 spots (61.5%) increased and 5 spots (38.5%) decreased under salt stress. This means that the C11 is trying to cope with salinity stress by changing the expression of their responsive genes. 

کلیدواژه‌ها [English]

  • Salt stress
  • Triticum boeoticum
  • proteomics
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