کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8352540 | 1541891 | 2018 | 52 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Depicting the physiological and ultrastructural responses of soybean plants to Al stress conditions
ترجمه فارسی عنوان
شرح واکنش های فیزیولوژیکی و فراشناختی گیاهان سویا به شرایط تنش آلی را نشان می دهد
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کلمات کلیدی
RPDRXDGlycine max LABETCO2 assimilation rateLPDCATPODROS - ROSAntioxidative stress - استرس ضد عفونیPhotosynthetically active radiation - تابش فعال فتوسنتزیTranspiration - تعرقPar - توسطRET - حقUltrastructure - زیرساختSOD - سدSuperoxide dismutase - سوکسوکس دیسموتازStomatal conductance - هدایت گرمایشیIon homeostasis - هوموتاز یونPeroxidase - پراکسیدازCatalase - کاتالازReactive oxygen species - گونههای فعال اکسیژن
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
چکیده انگلیسی
Aluminium (Al) is a toxic element for plants living in soils with acidic pH values, and it causes reductions in the roots and shoots development. High Al concentrations can cause physiological and structural changes, leading to symptoms of toxicity in plant tissue. The aim of this study was to describe the Al toxicity in soybean plants through physiological, nutritional, and ultrastructure analyses. Plants were grown in nutrient solution containing increasing Al concentrations (0; 0.05; 0.1; 1.0, 2.0 and 4.0â¯mmolâ¯Lâ1). The Al toxicity in the soybean plants was characterized by nutritional, anatomical, physiological, and biochemical analyses. The carbon dioxide assimilation rates and stomatal conductance were not affected by the Al. However, the capacity for internal carbon use decreased, and the transpiration rate increased, resulting in increased root biomass at the lowest Al concentration in the nutrient solution. The soybean plants exposed to the highest Al concentration exhibited lower root and shoot biomass. The nitrate reductase and urease activities decreased with the increasing Al concentration, indicating that nitrogen metabolism was halted. The superoxide dismutase and peroxidase activities increased with the increasing Al availability in the nutrient solution, and they were higher in the roots, showing their role in Al detoxification. Despite presenting external lesions characterized by a damaged root cap, the root xylem and phloem diameters were not affected by the Al. However, the leaf xylem diameter showed ultrastructural alterations under higher Al concentrations in nutrient solution. These results have contributed to our understanding of several physiological, biochemical and histological mechanisms of Al toxicity in soybean plants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Physiology and Biochemistry - Volume 130, September 2018, Pages 377-390
Journal: Plant Physiology and Biochemistry - Volume 130, September 2018, Pages 377-390
نویسندگان
André Rodrigues dos Reis, Lucas Aparecido Manzani Lisboa, Heitor Pontes Gestal Reis, Jéssica Pigatto de Queiroz Barcelos, Elcio Ferreira Santos, José Mateus Kondo Santini, Barbara Rocha Venâncio Meyer-Sand, Fernando Ferrari Putti,