The effect of paclobutrazol on some growth and biochemical characteristics of dill (Anethum graveolans L.) plants under drought stress
Publish place: Plant Process and Function، Vol: 13، Issue: 59
Publish Year: 1403
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JISPP-13-59_013
تاریخ نمایه سازی: 17 اردیبهشت 1403
Abstract:
In this study, the effects of drought stress and paclobutrazol on Anethum graveolans L. were investigated. The experiment was carried out as a factorial based on a completely randomized design with three replications in a greenhouse. Some growth and biochemical characteristics of dill under drought stress (irrigation-based) at three levels (۳۰%, ۵۰% and ۷۰% field capacity) and paclobutrazol at two concentrations (۲۰ and ۴۰ mg/L) were investigated. Drought stress caused a significant reduction in the fresh and dry weight and length of both stem and root, as well as the contents of photosynthetic pigments and proteins, whereas this stress induced reduced sugar and proline content and catalase activity. Although fresh and dry weight and length of stem decreased in plants treated with paclobutrazol, paclobutrazol treatment significantly increased the root growth parameters and the contents of pigments and proteins in relation to drought stress and paclobutrazol treatment. In plants treated with paclobutrazol, the content of sugars, proline and catalase activity were significantly higher compared to non-treated plants and controls (P≤۰/۰۵). Moreover, the patterns of protein expression were different. SDS-PAGE analysis revealed a protein with a molecular weight of ۱۱ KD under severe stress conditions and treatment with ۴۰ mg/L paclobutrazol. This protein probably has a major role in dill resistance to drought and the stress amelioration effect of paclobutrazol.
Keywords:
Catalase , Electrophoresis , Photosynthetic pigments , Proline , Protein , Sugar , الکتروفورز , پرولین , پروتئین , رنگیزه های فتوسنتزی , قند , کاتالاز
Authors
راضیه معینی
Department of Biology, Kerman Branch, Islamic Azad University, Kerman, Iran
مهرناز محمودی زرندی
Department of Biology, Kerman Branch, Islamic Azad University, Kerman, Iran
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