Zinc in plants

Contents Summary 677 I. Physical and chemical properties of zinc 678 II. Biochemical properties of zinc 678 III. Proteins interacting with zinc 678 IV. Zinc fluxes in the soil–root–shoot continuum 679 V. Zinc in plants 684 VI. Plant responses to elevated soil Zn 686 Acknowledgements 695 Refere...

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Vydáno v:	The New phytologist Ročník 173; číslo 4; s. 677 - 702
Hlavní autoři:	Broadley, Martin R., White, Philip J., Hammond, John P., Zelko, Ivan, Lux, Alexander
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Oxford, UK Blackwell Publishing Ltd 01.03.2007
Témata:	analysis anatomy & histology Arabidopsis Arabidopsis halleri biofortification Biological Evolution Brassicaceae cadmium (Cd) chemistry Genechip genetic variation genetics humans hyperaccumulation hyperaccumulators ion transport Magnoliopsida Magnoliopsida - metabolism meta-analysis metabolism Noccaea caerulescens nutrient deficiencies physicochemical properties plant proteins plant response Plant Roots Plant Roots - anatomy & histology Plant Roots - metabolism Plant Shoots Plant Shoots - metabolism Plants Plants - genetics Plants - metabolism soil Soil - analysis surveys Thlaspi caerulescens toxicity transcriptomics uptake kinetics zinc Zinc - chemistry Zinc - metabolism Zinc - toxicity
ISSN:	0028-646X, 1469-8137
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Shrnutí:	Contents Summary 677 I. Physical and chemical properties of zinc 678 II. Biochemical properties of zinc 678 III. Proteins interacting with zinc 678 IV. Zinc fluxes in the soil–root–shoot continuum 679 V. Zinc in plants 684 VI. Plant responses to elevated soil Zn 686 Acknowledgements 695 References 696 Summary Zinc (Zn) is an essential component of thousands of proteins in plants, although it is toxic in excess. In this review, the dominant fluxes of Zn in the soil–root–shoot continuum are described, including Zn inputs to soils, the plant availability of soluble Zn2+ at the root surface, and plant uptake and accumulation of Zn. Knowledge of these fluxes can inform agronomic and genetic strategies to address the widespread problem of Zn‐limited crop growth. Substantial within‐species genetic variation in Zn composition is being used to alleviate human dietary Zn deficiencies through biofortification. Intriguingly, a meta‐analysis of data from an extensive literature survey indicates that a small proportion of the genetic variation in shoot Zn concentration can be attributed to evolutionary processes whose effects manifest above the family level. Remarkable insights into the evolutionary potential of plants to respond to elevated soil Zn have recently been made through detailed anatomical, physiological, chemical, genetic and molecular characterizations of the brassicaceous Zn hyperaccumulators Thlaspi caerulescens and Arabidopsis halleri.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Review-3
ISSN:	0028-646X 1469-8137
DOI:	10.1111/j.1469-8137.2007.01996.x