Impact of Selenium Supplementation on Growth and Selenium Accumulation on Spinach (Spinacia oleracea L.) Plants

Saffaryazdi, Azadeh; Lahouti, Mehrdad; Ganjeali, Ali; Bayat, Hassan

doi:10.15835/nsb448029

Cited by 104 publications

(66 citation statements)

References 40 publications

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“…At low level, selenium tended to stimulate the plant growth and root elongation, but at higher one, the dry mass accumulation and root tolerance index were severly decreased. Similar observations were also obtained by Euliss and Carmichael (2004) on canola, Kaklewski et al (2008) on wheat and rape, Lyons et al (2009) on Brassica rapa, Lehotai et al (2011) on Arabidopsis thaliana, Hajiboland and Keivanfar (2012) on canola and Saffaryazdi et al (2012) who noticed that shoot and root length, shoot and root fresh and dry weights and total dry weight of spinach plants were increased in response to the lowest concentration of Se (1 ppm), while higher concentrations (6 and 10 ppm) reduced these parameters. The low concentration enhanced also contents of chlorophylls a and b, while higher levels exert toxic effects.…”

Section: Introductionsupporting

confidence: 83%

THE ROLE OF MAGENTIC IRON AND SODIUM SELENATE IN MINIMIZING SOIL SALT HAZARDS ON GROWTH AND QUALITY OF JACARANDA ACUTIFOLIA HUMB. & BONPL. SEEDLINGS

Abdel-Fattah

2014

Scient. J. of Flowers and Ornament. Plants

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ABSTRACT:The purpose of this study is exploring the role of some chemicals, namely magnetic iron (Fe 3 O 4 ) and sodium selenate (Na 2 SeO 4 ) on avoiding or minimizing soil salt hazards on growth and quality of Jacaranda acutifolia Humb. & Bonpl. seedlings. Thus, a pot experiment was conducted under the full sun at the nursery of Hort. Res. Inst., ARC, Giza, Egypt during 2011 and 2012 seasons, where one-year-old seedlings of Jacaranda were planted in 30 cm diameter plastic pots filled with about 7 kg of sand and clay mixture (1:1, v:v) salinized with an equal mixture of NaCl and CaCl 2 pure salts (1:1, w:w) at the concentrations of 0, 1000, 2000 and 4000 ppm. Magnetic iron was applied three times as soil drench at the rate of 4 g/pot, while sodium selenate was added 3 times as foliar spray at 2 ppm. The effect of a combination between Fe 3 O 4 at 4 g/pot and Na 2 SeO 4 at 2 ppm was also studied.The obtained results revealed that means of vegetative and root growth characters were progressively decreased with increasing soil salinity level with significant differences relative to control means in the two seasons, but they were significantly increased as a result of applying magnetic iron, selenate or both in the combined treatment. The best vegetative and root growth, however was attained by planting in unsalinized soil mixture with the addition of both Fe 3 O 4 (4 g/pot) and Na 2 SeO 4 (2 ppm), as this interaction treatment gave the tallest plants, the longest root, the highest number of leaves and the heaviest fresh and dry weights of aerial parts and roots compared to all other interactions in both seasons. It was also noticed that leaf content of chlorophyll a and b and percentage of nitrogen, phosphorus and potassium were gradually decreased as the soil salinity level was increased, while they were significantly increased by drenching the soil with magnetic iron or spraying the foliage with the sodium selenate solution, or by adding these two chemicals in together. The opposite was the right regarding leaf content of carotenoids, sodium %, chloride % and free proline, as these constituents were progressively increased with rising salinity level, but were decreased by the two used chemicals when applied either individually or in combination. In general, applying magnetic iron alone or combining with Naselenate gave better results than the sole application of Na-selenate, whereas the mastery in all previous measurements was for the interaction of planting in unsalinized soil plus application of Fe 3 O 4 (4 g/pot) + Na 2 SeO 4 (2 ppm) that recorded the utmost high means in both seasons.From these results, it is recommended to drench the soil mixture with 4 g/pot of magnetic iron, alone or plus spraying of Na-selenate 2 ppm on the foliage to get the best growth and quality of Jacaranda acutifolia seedlings planted in either salinized or unsalinized soil.

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Section: Introductionsupporting

confidence: 83%

THE ROLE OF MAGENTIC IRON AND SODIUM SELENATE IN MINIMIZING SOIL SALT HAZARDS ON GROWTH AND QUALITY OF JACARANDA ACUTIFOLIA HUMB. & BONPL. SEEDLINGS

Abdel-Fattah

2014

Scient. J. of Flowers and Ornament. Plants

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“…The dual effect of Se on plant growth (positive or toxic) dependent on concentrations of Se was also found in other plant species (White et al 2004;Hajiboland and Amjad 2007;Ríos et al 2008;Ramos et al 2011;Saffaryazdi et al 2012;HawrylakNowak 2013). Chlorophyll fluorescence parameters (e.g.…”

Section: Macronutrients Concentrationmentioning

confidence: 64%

“…This shows that the decrease in the chlorophyll concentrations is a more sensitive indicator of Se phytotoxicity in cucumber than a reduction in plant growth. Moreover, chlorophyll b was more sensitive to the Se stress than chlorophyll a which was found also in spinach plants (Saffaryazdi et al 2012). …”

Section: Macronutrients Concentrationmentioning

confidence: 78%

“…To our best knowledge, the influence of Se on the contents of macronutrients other than sulphur was the aim of some experiments (Wu and Huang 1992;Hawrylak-Nowak 2008;Feng et al 2009;Kopsell et al 2000;Matraszek and Hawrylak-Nowak 2009;Filek et al 2010;Ramos et al 2011;Saffaryazdi et al 2012;Smoleń et al 2014) but their results are sometimes ambiguous.…”

Section: Macronutrients Concentrationmentioning

confidence: 99%

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The dual effects of two inorganic selenium forms on the growth, selected physiological parameters and macronutrients accumulation in cucumber plants

2015

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The boundary between beneficial and phytotoxic levels of selenium (Se) is narrow, and both induce alteration in plant growth and their physiology. In this study, the influence of two Se forms (selenite or selenate) with different concentrations (2-80 lM) on cucumber plants was investigated. The toxicity threshold for selenate and selenite was determined at the concentrations of 80 and 20 lM, respectively. In the Se-exposed plants, the growthpromoting effect was found at 6 lM of selenite and at 6-20 lM of selenate. The root activity considerably increased with increasing selenite concentrations suggesting the upregulation of mitochondrial dehydrogenases activity. Selenite treatment also impaired photosynthetic pigments accumulation and chlorophyll fluorescence parameters. Moreover, Se exerted a dual effect on lipid peroxidation in roots: at low concentrations it inhibited this process, whereas at high concentrations it enhanced the accumulation of harmful lipid peroxides. Under low Se concentrations (\10 lM), the accumulation of Se in shoots was similar in the presence of selenate and selenite. When Se concentration was [10 lM, the accumulation of Se in shoots was greater in selenate-exposed than seleniteexposed plants. However, in the roots the Se concentrations were always higher after selenite exposure comparing to selenate. The N level in plants was generally maintained constant, while the remaining macronutrients (especially K, P, and S) concentrations were significantly changed depending on the form and concentrations of Se. These results imply that an application of either selenate or selenite at concentrations\10 lM may be potentially used for biofortification of cucumber with Se and changes in plant macronutrient contents are not expected under these conditions.

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“…Наравне с цитокининами Se стимулирует синтез хлорофилла [14,16]. Показано, что снижение уровня этилена, синтезируемого пшеницей при обработке селенатом натрия, сопровождается увеличением концентрации пролина и активности глутатион пероксидазы, повышая устойчивость растений к кадмиевому стрессу [11].…”

Section: физиология и биохимия растенийunclassified

Hormonal Regulation of Selenium Accumulation by Plants

Golubkina¹,

Добруцкая²,

Новоселов³

2015

VCR

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Гормональное регулирование представляет собой уникальный механизм, определяющий рост и развитие живого организма. В обзоре рассмотрены факты взаимосвязи гормонального статуса растений не аккумуляторов и гипераккумуляторов селена с уровнями накопления микроэлемен-та, явление стимулирования накопления и перераспределения селена под действием фитогор-монов, видовые и сортовые особенности воздействия фитогормонов, а также влияние пола растения на уровни накопления микроэлемента. Приводятся данные гормонального регулирова-ния уровня селена для шпината, чеснока, капусты китайской, многолетних луков и валерианы.Ключевые слова : селен, фитогормоны, шпинат, валериана, многолетние луки, капуста китайская. н а у ч н о п р а к т и ч е с к и й ж у р н а л[ 104 ]о в о щ и р о с с и и № 3 ( 2 8 ) 2 0 1 5 нов, и сложным взаимосвязям между фитогормонами. Значительная часть фитогормонов способна стимулировать рост растений путем улучшения минерального питания. Однако, примеры стимулирования накопления Se растениями под дей-ствием стимуляторов роста ранее не рассматривались с позиций гормонального регулирования.Прорастание семян -это пример косвенного влияния фито-гормонов на уровень подвижных форм Se в растениях. Увеличение активности гидролитических ферментов под дей-ствием индолилуксусной кислоты в процессе прорастания семян приводит к резкому возрастанию содержания водорастворимых форм микроэлемента, содержание которых прямо пропорцио-нально величине всхожести семян [2]. Последний факт имеет особое значение, поскольку именно водорастворимые производ-ные Se проявляют наибольшую биологическую активность. Так, на капусте китайской установлены высокие отрицательные коэф-фициенты корреляции между содержанием в листья водораство-римых (наиболее биологически активных) форм Se и индексом поражаемости растений сосудистым (r=-0,71), слизистым (r=-0,68) бактериозом и килой (r=-0,54) (P<0,01; [3]).Увеличение Se-аккумулирующей способности растений под действием фитогормонов-стимуляторов роста продемонстриро-вано на эпибрассинолидах (препарат Эпин Экстра), гетероаукси-не, гиббереллине, индолилуксусной кислоте. Представленные ниже результаты позволяют выделить несколько закономерно-стей.Во-первых, интенсивность действия фитогормонов опреде-ляется видовой специфичностью растений. Так, среди 5 исследо-ванных видов многолетних луков шнитт лук отличается наиболь-шей чувствительностью к воздействию Эпина и наибольшим содержанием Se, батун -наименьшими показателями (рис.1). При этом в интервале концентраций 0-2 мг Эпина/л только слизун и батун проявляли эффект насыщения уровня Se: кривая зависи-мости «содержание Se -концентрация Эпина» выходила на плато уже при концентрации Эпина 0,5 мг/л. С другой стороны, не менее значительны могут быть и сорто-вые различия в чувствительности растений к эпибрассинолидам. Как видно из данных рис.2, при одинаковых условиях вегетации 4 сортов капусты китайской наибольшее возрастание Se-аккуму-лирующей способности под действием эпибрассинолидов было характерно для сорта Chrysanthenum heart, наименьшее -для Hirosh...

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Impact of Selenium Supplementation on Growth and Selenium Accumulation on Spinach (Spinacia oleracea L.) Plants

Cited by 104 publications

References 40 publications

THE ROLE OF MAGENTIC IRON AND SODIUM SELENATE IN MINIMIZING SOIL SALT HAZARDS ON GROWTH AND QUALITY OF JACARANDA ACUTIFOLIA HUMB. & BONPL. SEEDLINGS

THE ROLE OF MAGENTIC IRON AND SODIUM SELENATE IN MINIMIZING SOIL SALT HAZARDS ON GROWTH AND QUALITY OF JACARANDA ACUTIFOLIA HUMB. & BONPL. SEEDLINGS

The dual effects of two inorganic selenium forms on the growth, selected physiological parameters and macronutrients accumulation in cucumber plants

Hormonal Regulation of Selenium Accumulation by Plants

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