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Plant Physiology and Biochemistry | 2015

Effect of molybdenum treatment on molybdenum concentration and nitrate reduction in maize seedlings

Béla Kovács; Anita Puskás-Preszner; László Huzsvai; László Lévai; Éva Bódi

Since 1940 molybdenum has been known as an essential trace element in plant nutrition and physiology. It has a central role in nitrogen metabolism, and its deficiency leads to nitrate accumulation in plants. In this study, we cultivated maize seedlings (Zea mays L. cv. Norma SC) in nutrient solution and soil (rhizoboxes) to investigate the effect of molybdenum treatment on the absorption of molybdenum, sulfur and iron. These elements have been previously shown to play important roles in nitrate reduction, because they are necessary for the function of the nitrate reductase enzyme. We also investigated the relationship between molybdenum treatments and different nitrogen forms in maize. Molybdenum treatments were 0, 0.96, 9.6 and 96 μg kg(-1) in the nutrition solution experiments, and 0, 30, 90, 270 mg kg(-1) in the rhizobox experiments. On the basis of our results, the increased Mo level produced higher plant available Mo concentration in nutrient solution and in soil, which resulted increased concentration of Mo in shoots and roots of maize seedlings. In addition it was observed that maize seedlings accumulated more molybdenum in their roots than in their shoots at all treatments. In contrast, molybdenum treatments did not affect significantly either iron or sulfur concentrations in the plant, even if these elements (Mo, S and Fe) play alike important roles in nitrogen metabolism. Furthermore, the physiological molybdenum level (1× Mo = 0.01 μM) reduced NO3-N and enhanced the NH4-N concentrations in seedlings, suggesting that nitrate reduction was more intense under a well-balanced molybdenum supply.


Novenytermeles | 2011

Növekvő molibdén-koncentráció hatása a különböző nitrogénformákra, valamint a molibdén nitrátasszimilációban betöltött szerepe@@@The effect of increasing molybdenum concentration on different nitrogen forms and the role of molybdenum in nitrate assimilation

Éva Bódi; László Lévai; László Huzsvai; Béla Kovács

Osszefoglalas A novenyek nitrogen asszimilacioja bonyolult biokemiai folyamatok osszessegen keresztul valosul meg. Novenyeink a nitrogent a talajbol tobb formaban vehetik fel. A felvett formatol fuggetlenul valamennyi forma ammoniumma alakul, hogy a noveny hasznositani tudja. Celkitűzesunk volt, hogy laboratoriumi korulmenyek kozott vizsgaljuk, hogyan hat a novekvő koncentracioju molibdenellatas a kulonboző nitrogen-formakra, valamint hogyan befolyasolja a nitratasszimilacio folyamatat. Kiserleti novenykent egy ketszikű (napraforgo, Helianthus annuus L. cv Arena PR) novenyt valasztottunk, melynel kulon vizsgaltuk a hajtas es a gyoker molibden koncentraciojat. Kiserletunkkel igazoltuk, hogy a nitratasszimilacio egyik lenyeges mozzanatanak, a nitratredukcionak a zavartalan lejatszodasahoz a molibden nelkulozhetetlen. A megfelelő molibdenellatas a nitrat-reduktaz enzim aktivitasat noveli, igy elkerulhetjuk, hogy a nitrat karos mennyisegben halmozodjon fel novenyeinkben. A molibdenellatas es a nitratredukcio ...


Novenytermeles | 2011

A molibdénellátás hatása kukorica csíranövényekre@@@The effect of molybdenum supply on maize seedlings

Éva Bódi; László Lévai; László Huzsvai; Béla Kovács

Osszefoglalas A molibden alapvető nyomelem a novenyi tapanyagellatasban. Novenyelettani jelentő seget 1940-ben bizonyitottak be. A noveny nitrogen anyagcserejeben van fontos szerepe, hianyaban nitrat felhalmozodas tapasztalhato. Kutatomunkank celja kettős volt: Kiserleteink soran egyreszt arra a kerdesre kerestuk a valaszt, hogyan valtozik a kukorica (Zea mays L. cv Norma SC) csiranoveny Mo, Fe es S koncentracioja novekvő kon centracioju Mo-kezelesek soran. Azert tartottuk fontosnak e harom elem koncentraciojanak nyomon koveteset, mert a nitratredukcioban, a nitrat-reduktaz műkodeseben ezek az elemek kiemelt szerepet toltenek be. Masreszt kiserleteinkkel laboratoriumi korulmenyek kozott kivantuk igazolni, hogy szoros osszefugges van a molibdenellatas es nitratredukcio kozott: a novenyek fiziologiai molibden szuksegletet biztositva, csokkenteni tudjuk nitrat tartalmukat. Kiserleteink az alabbi ket tipusba sorolhatok: rizoboxos- es tapoldatos kiserletek. Rizoboxos kiserleteinkben harom kulonboző koncentraci...


European Chemical Bulletin | 2012

Effects of various grape rootstocks on macro and micro element uptake of ’Cserszegi fűszeres’ grape cultivar

István Fekete; Nándor Rakonczás; Dávid Andrási; Éva Bódi; Béla Kovács


World Academy of Science, Engineering and Technology, International Journal of Biological, Biomolecular, Agricultural, Food and Biotechnological Engineering | 2015

Role of Selenite and Selenate Uptake by Maize Plants in Chlorophyll A and B Content

Farzaneh Garousi; Szilvia Veres; Éva Bódi; Szilvia Várallyay; Béla Kovács


European Chemical Bulletin | 2012

THE ROLE OF SELENIUM-ENRICHED FOOD SPROUTS WITH RESPECT TO OUR DAILY SELENIUM NEEDS

Éva Bódi; István Fekete; Dávid Andrási; Béla Kovács


World Academy of Science, Engineering and Technology, International Journal of Biological, Biomolecular, Agricultural, Food and Biotechnological Engineering | 2015

Effect of Selenite and Selenate Uptake by Maize Plants on Specific Leaf Area

Farzaneh Garousi; Sz. Veres; Éva Bódi; Sz. Várallyay; Béla Kovács


World Academy of Science, Engineering and Technology, International Journal of Agricultural and Biosystems Engineering | 2015

Effects of Molybdenum Treatments on Maize and Sunflower Seedlings

Éva Bódi; Szilvia Veres; Farzaneh Garousi; Szilvia Várallyay; Béla Kovács


World Academy of Science, Engineering and Technology, International Journal of Agricultural and Biosystems Engineering | 2015

What Are the Problems in the Case of Analysis of Selenium by Inductively Coupled Plasma Mass Spectrometry in Food and Food Raw Materials

Béla Kovács; Éva Bódi; Farzaneh Garousi; Szilvia Várallyay; Dávid Andrási


World Academy of Science, Engineering and Technology, International Journal of Agricultural and Biosystems Engineering | 2015

Effect of Arsenic Treatment on Element Contents of Sunflower, Growing in Nutrient Solution

Szilvia Várallyay; Szilvia Veres; Éva Bódi; Farzaneh Garousi; Béla Kovács

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