caa a22 4500 397522142 CHVBK 20180308164635.0 cr unu---uuuuu 161202e199502 xx s 000 0 eng 10.1093/jxb/46.2.161 doi (NATIONALLICENCE)oxford-10.1093/jxb/46.2.161 Aluminium/silicon interactions in higher plants [Elektronische Daten] [Martin J. Hodson, David E. Evans] Aluminium and silicon are usually abundant in soil mineral matter, but their availability for plant uptake is limited by low solubility and, in the case of Al, high soil pH causes precipitation of the element in insoluble forms. Al toxicity is a major problem in naturally occurring acid soils and in soils affected by acidic precipitation. Al has no known role in higher plants, and is generally known as a toxic element, whereas Si is generally regarded as a beneficial element. Recently, it has been suggested that Al toxicity can be ameliorated by Si in a variety of animal systems. In this review the evidence that amelioration of Al toxicity by Si can also occur in plants is assessed. At present such amelioration has been shown in sorghum, barley, teosinte, and soybean, but not in rice, wheat, cotton, and pea. Plant species vary considerably in the amounts of Al and Si that they transport into their tissues, and it seems that very high Si accumulation and very high Al accumulation are mutually exclusive. The mechanisms considered for amelioration are: solution effects; codeposition of Al and Si within the plant; effects in the cytoplasm and on enzyme activity; and indirect effects. © Oxford University Press Review Article nationallicence Aluminium nationallicence silicon nationallicence biomineralization nationallicence codeposition nationallicence toxicity nationallicence tolerance nationallicence Hodson Martin J. School of Biological and Molecular Sciences, Oxford Brookes University, Gipsy Lane, Headington, Oxford OX3 OBP, UK aut Evans David E. School of Biological and Molecular Sciences, Oxford Brookes University, Gipsy Lane, Headington, Oxford OX3 OBP, UK aut Journal of Experimental Botany Oxford University Press 46/2(1995-02), 161-171 0022-0957 46:2<161 1995 46 exbotj https://doi.org/10.1093/jxb/46.2.161 text/html Onlinezugriff via DOI 1 review-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/jxb/46.2.161 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hodson Martin J. School of Biological and Molecular Sciences, Oxford Brookes University, Gipsy Lane, Headington, Oxford OX3 OBP, UK aut NATIONALLICENCE 700 1- Evans David E. School of Biological and Molecular Sciences, Oxford Brookes University, Gipsy Lane, Headington, Oxford OX3 OBP, UK aut NATIONALLICENCE 773 0- Journal of Experimental Botany Oxford University Press 46/2(1995-02), 161-171 0022-0957 46:2<161 1995 46 exbotj Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford