ACCUMULATION AND TRANSLOCATION OF SILICON IN RICE AND BEAN PLANTS USING THE30SI STABLE ISOTOPE

Autor:	José Albertino Bendassolli, Alexssandra Luiza Rodrigues Molina Rossete, C. H. Abreu, Josiane Meire Toloti Carneiro, L. A. Oliveira
Rok vydání:	2010
Předmět:	food.ingredient Isotope Silicon Physiology Chemistry Stable isotope ratio fungi food and beverages chemistry.chemical_element Vigna umbellata Mass spectrometry Horticulture food Botany Composition (visual arts) Isotopes of silicon Agronomy and Crop Science Plant nutrition
Zdroj:	Journal of Plant Nutrition. 33:1374-1383
ISSN:	1532-4087 0190-4167
DOI:	10.1080/01904167.2010.484097
Popis:	The 30Si silicon isotope stable was used for assessing the accumulation and translocation of Si in rice and bean plants grown in labeled nutritive solution. The isotopic silicon composition in plant materials was determined by mass spectrometry (IRMS) using the method based on SiF4 formation. Considering the total-Si added into nutritive solutions, the quantity absorbed by plants was near to 51% for rice and 15% for bean plants. The accumulated amounts of Si per plant were about 150g in rice and 8.6g in bean. Approximately 70% of the total-Si accumulated was found in leaves. At presented experimental conditions, the results confirmed that once Si is accumulated in the old parts of rice and bean plant tissues it is not redistributed to new parts, even when Si is not supplied to plants from nutritive solution.
Databáze:	OpenAIRE
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