Effects of potassium deficiency and replacement of potassium by sodium on sugar beet plants
| العنوان: | Effects of potassium deficiency and replacement of potassium by sodium on sugar beet plants |
|---|---|
| المؤلفون: | C. X. Peng, Piergiorgio Stevanato, Z. Pi, L. H. Yv, Gui Geng, X. L. Guo, Xiangshi Kong, Y. Yang |
| المصدر: | Russian Journal of Plant Physiology. 61:224-230 |
| بيانات النشر: | Pleiades Publishing Ltd, 2014. |
| سنة النشر: | 2014 |
| مصطلحات موضوعية: | Antioxidant, Sodium, Potassium, medicine.medical_treatment, chemistry.chemical_element, Plant Science, potassium sodium replacement, free amino acids, Superoxide dismutase, antioxidant enzymes, medicine, Food science, chemistry.chemical_classification, biology, Chemistry, sugar beet, biology.organism_classification, Amino acid, Biochemistry, potassium deficiency, Catalase, biology.protein, Potassium deficiency, Sugar beet, Beta vulgaris, Beta vulgaris, potassium sodium replacement, potassium deficiency, sugar beet, antioxidant enzymes, free amino acids |
| الوصف: | Two sugar beet (Beta vulgaris L.) genotypes were cultivated at different K+/Na+ concentration in nutrient solutions (mM, 3/0 (control groups), 0.03/2.97 (K-Na replacement groups), and 0.03/0 (K deficiency groups)) to investigate the effects of potassium deficiency and replacement of potassium by sodium on plant growth and to explore how sodium can compensate for a lack of potassium. After 22 days of growth were determined: (i) dry weights of leaves, stems, and roots, (ii) the Na+ and K+ contents, (iii) MDA level, (iv) the activities of antioxidant enzymes, including superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPX), and (v) the level of free amino acids. Potassium deficit inhibited plant growth, decreased the K+ content in leaves and roots, activated GPX and SOD, suppressed CAT activity, and increased the content of most amino acids. In K-Na replacement groups, the effects of K+ deficiency, including changes in the MDA level, antioxidant enzyme activities, and the level of free amino acids, were alleviated, but the degree of recovery did not reach the values characteristic for the control groups. Based on these results, we concluded that low potassium could lead to the inhibition of seedling growth, oxidative damage, and amino acid accumulation. While sodium was able to substitute potassium to a large extent, it cannot fulfil potassium fundamental role as an essential nutrient in sugar beet. |
| تدمد: | 1608-3407 1021-4437 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4855fa830fd055b9762702bf48e94759 https://doi.org/10.1134/s1021443714020101 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....4855fa830fd055b9762702bf48e94759 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 16083407 10214437 |
|---|