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- Title
Arzénkezelés hatása zöldborsó (Pisum sativum L.) arzén- és foszforkoncentrációjára, valamint szárazanyag-produktumára.
- Authors
VÁRALLYAY, Szilvia; BALLÁNÉ KOVÁCS, Andrea; SOÓS, Áron; KOVÁCS, Béla
- Abstract
The world. Arsenic occurs in soil mainly as inorganic arsenic species, namely arsenate [As(V)] and arsenite [As(III)]. These two forms of arsenic are toxic for plants. The uptake of arsenic from soils contaminated with arsenic leads to physiological changes. Arsenic is able to influence the uptake of other elements by competing with macro- and microelements for transporters. Several authors have investigated the effect of arsenate on the uptake of phosphorus by plants, because arsenate and phosphate are chemically very similar, and they share the same transport pathway in plants. However, the findings in this research area are contradictory. The objective of the present study was to investigate the effect of arsenate on the dry weight of green pea. A further aim was to investigate the effect of arsenate treatments on phosphorus uptake. The total and plant-available As content of the soil was also determined. The experiment was carried out in a greenhouse on calcareous chernozem soil. The element content of the samples was determined by ICP-MS (inductively coupled plasma mass spectrometry) and ICP-OES (inductively coupled plasma optical emission spectrometry). Arsenate had a clear impact on the dry weight, decreasing that of the roots. Its effect was less clear-cut in the case of the leaves and stems, as the 10 mg kg–1 As treatment increased the dry weight of the samples, while the 90 and 270 mg kg–1 treatments decreased it. The generative organs also exhibited an increase in dry mass up to 10 mg kg–1 As, after which a decreasing tendency was observed. Element analysis showed that arsenic was accumulated mainly in the root system, and only smaller amounts were translocated to the aboveground parts of the plants. However, the translocation of arsenic from the roots towards other plant organs increased if the soil was treated with at least 90 mg kg–1 As. The As content of all green pea organs tended to rise as the As rate increased. The arsenic concentration of individual plant parts decreased in the order: root > stem > leaf > pod > pea The results of the greenhouse experiment indicated a decline in the P-As ratio in various plant organs, especially in the leaves, suggesting that the leaf As-P ratio could be a useful indicator of arsenic toxicity. It was found that only 38.2–56.9% of the total arsenic content in the soil was available to plants.
- Subjects
PEAS; EFFECT of arsenic on plants; CHEMICAL composition of plants; PHOSPHORUS; ARSENIC content of plants; DRY matter content of plants; INDUCTIVELY coupled plasma mass spectrometry techniques; PHYSIOLOGY
- Publication
Agrochemistry & Soil Science / Agrokémia és Talajtan, 2016, Vol 65, Issue 2, p275
- ISSN
0002-1873
- Publication type
Article
- DOI
10.1556/0088.2016.65.2.7