Journal ArticleDOI
The uptake and transport of silicon by perennial ryegrass and wheat
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In experiments with perennial ryegrass and wheat, silicon concentration in flowing solution culture was maintained constant at 0, 10 and 20 mgl−1 (ryegrasses) or 0, 20 and 40 mgl −1 (wheat) as mentioned in this paper.Abstract:
In experiments with perennial ryegrass and wheat, silicon (Si) concentration in flowing solution culture was maintained constant at 0, 10 and 20 mgl−1 (ryegrass) or 0, 20 and 40 mgl−1 (wheat). Uptake and transport were measured in both species at frequent harvests over periods of up to 80 days. By the final harvests the initial differences in concentration between plants grown at high or low Si were largely eliminated. Much more Si was taken up by both species from the culture solution than was present in the transpiration stream. With ryegrass, the calculated cumulative amounts taken up through mass flow by plants grown at 10 or 20mgl−1 Si, represented less than 40 and 70 per cent, respectively, of the total Si uptake. Up to 94 per cent of the Si taken up by wheat was transported rapidly to the shoots; older leaves contained up to 11.8 per cent Si.read more
Citations
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Journal ArticleDOI
Mechanisms of silicon-mediated alleviation of abiotic stresses in higher plants: a review.
TL;DR: The key mechanisms of Si-mediated alleviation of abiotic stresses in higher plants include: stimulation of antioxidant systems in plants, complexation or co-precipitation of toxic metal ions with Si, immobilization of toxicMetal ions in growth media, uptake processes, and compartmentation of metal ions within plants.
Journal ArticleDOI
Role of silicon in salt tolerance of wheat (Triticum aestivum L.)
TL;DR: Silicon significantly reduced the Na+ content in flag leaves and roots, under saline conditions, and Concentrations of silicon roots increased with increasing salinity and silicon levels.
Journal ArticleDOI
Importance of plant species and external silicon concentration to active silicon uptake and transport
TL;DR: It can be concluded that both active and passive Si-uptake components co-exist in O. sativa, Z. mays, H. annuus and B. hispida, with their relative contribution being dependent much upon both plant species and external Si concentrations.
Journal ArticleDOI
Silicon uptake and transport is an active process in Cucumis sativus
TL;DR: It can be concluded that Si uptake and transport in C. sativus is active and independent of external Si concentrations, in contrast to the process in V. faba.
Journal ArticleDOI
Silicon availability modifies nutrient use efficiency and content, C:N:P stoichiometry, and productivity of winter wheat (Triticum aestivum L.).
TL;DR: The results revealed that Si is readily taken up and accumulated basically in aboveground vegetative organs and this implies fundamental influences of Si on C turnover, P availability and nitrogen use efficiency for wheat as a major staple crop.
References
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Book
Trace Elements in Human and Animal Nutrition
TL;DR: This book discusses the history of zinc, its application in agriculture, and its applications in the management of soil-Plant-Animal relations.
Book
Sand and Water Culture Methods Used in the Study of Plant Nutrition
Abstract: Since its appearanc e in 1952, Technical Communication no. 22 of the Commonwealt h Bureau of Horticulture and Plantation Crops has come to be recognized, at least in the English language, as the standar d reference for those interested in the developmen t of sand and water culture techniques used in plant nutrition research throughout the British Commonwealth , parts of Europe, and the United States. The Second Edition of this valuabl e work wil l strengthen even further the unique position it occupies. Most (395 of its 477 pages of text) of the book is devoted to a general review of the subject . A second part deal s in somewhat more detai l with the procedures used by the author at Long Ashton. The completenes s of treatment of the subject matter is best attested by the number of references . Their listing, with complet e titles and cross-indexing , requires 55 pages, which gives an estimated number of 1,800 references . The earliest reference date noted was 1699, the latest , 1964. They are primarily from Great Britain and the United States, but paper s from German, French, Russian, and Japanes e publications are also included. The section devoted to the historical developmen t of plant culture techniques is much longer than in the First Edition. The book represent s very much more than a historical account ing, however . It provides in great detail, and with numerous drawings where appropriate, information on every aspect of plant nutrition research . Likely problems that might be encountere d are presented , and the advantage s and disadvantage s of many of the procedures employed and material s used are discussed . A very useful feature of the book are the conclusions and summaries given after some of the topics are discusse d in detail. It wil l serve well the needs of both the researche r actively engaged in plant nutrition studies as well as the teacher seeking material for classroom presentation . With one important exception, the headings into which the subject matter is divided are identical to those of the earlier edition. However, many sections have been completel y revised, and the more recent findings have been added to practicall y all of them. A 30-page section on the "Assessmen t of contamination and the limitations of micronutrient deficiency studies" is a new and valuable addition to the Second Edition. Much of the material which was previousl y reviewed by R. E. Thiers and R. L. Mitchell is included in this section, but the results of some of the studies at Long Ashton are also presented . In the reviewer' s opinion two features of the book could be improved. I found that it took some time to get accustome d to the numbering system used for chapters , sections, and subsections , and the designation of topics in the index in this manner.Search iri g for topics in the text designate d by this numbering system is much slower than finding them by page number designation. A second shortcoming of the book is the kind of binding used. Unless the copy I received was not typical, the pages are not bound securel y and consequentl y wil l pull loose quite readily. I hope this is not generall y true as I believe that the book wil l be subject to heavy use in any laborator y where plant nutrition studies are being conducted.—V. V. Rendig, Dept, of Soils & Plant Nutrition, University of California, Dans.
Book ChapterDOI
Silica in soils, plants, and animals.
L. H. P. Jones,K.A. Handreck +1 more
TL;DR: In this paper, the authors discuss several aspects of silica in the chain from soil through plant to animal, including the factors affecting the silica content of plants, such as soil pH and the content of iron and aluminum oxides present in plants.