Journal ArticleDOI
The role of root exudates and allelochemicals in the rhizosphere
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Recent research onRoot exudation and the role of allelochemicals in the rhizosphere is outlined by studying the case of three plants that have been shown to produce allelopathic root exudates: black walnut, wheat and sorghum.Abstract:
Plant roots serve a multitude of functions in the plant including anchorage, provision of nutrients and water, and production of exudates with growth regulatory properties. The root–soil interface, or rhizosphere, is the site of greatest activity within the soil matrix. Within this matrix, roots affect soil structure, aeration and biological activity as they are the major source of organic inputs into the rhizosphere, and are also responsible for depletion of large supplies of inorganic compounds. Roots are very complicated morphologically and physiologically, and their metabolites are often released in large quantities into the soil rhizosphere from living root hairs or fibrous root systems. Root exudates containing root-specific metabolites have critical ecological impacts on soil macro and microbiota as well as on the whole plant itself. Through the exudation of a wide variety of compounds, roots impact the soil microbial community in their immediate vicinity, influence resistance to pests, support beneficial symbioses, alter the chemical and physical properties of the soil, and inhibit the growth of competing plant species. In this review, we outline recent research on root exudation and the role of allelochemicals in the rhizosphere by studying the case of three plants that have been shown to produce allelopathic root exudates: black walnut, wheat and sorghumread more
Citations
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Journal ArticleDOI
The Role of Root Exudates in Rhizosphere Interactions with Plants and Other Organisms
TL;DR: Recent advances in elucidating the role of root exudates in interactions between plant roots and other plants, microbes, and nematodes present in the rhizosphere are described.
Journal ArticleDOI
Acquisition of phosphorus and nitrogen in the rhizosphere and plant growth promotion by microorganisms
Alan Richardson,José Miguel Barea,Ann McNeill,Claire Prigent-Combaret,Claire Prigent-Combaret +4 more
TL;DR: Features of the rhizosphere that are important for nutrient acquisition from soil are reviewed, with specific emphasis on the characteristics of roots that influence the availability and uptake of phosphorus and nitrogen.
Journal ArticleDOI
Regulation and function of root exudates.
TL;DR: This review focuses on compiling the information available on the regulation and mechanisms of root exudation processes, and provides some ideas related to the evolutionary role ofRoot exudates in shaping soil microbial communities.
Journal ArticleDOI
Plant growth-promoting rhizobacteria and root system functioning.
Jordan Vacheron,Guilhem Desbrosses,Marie-Lara Bouffaud,Bruno Touraine,Yvan Moënne-Loccoz,Daniel Muller,Laurent Legendre,Florence Wisniewski-Dyé,Claire Prigent-Combaret +8 more
TL;DR: Novel knowledge and gaps on PGPR modes of action and signals are addressed, recent progress on the links between plant morphological and physiological effects induced by PGPR are highlighted, and the importance of taking into account the size, diversity, and gene expression patterns of PGPR assemblages in the rhizosphere to better understand their impact on plant growth and functioning is shown.
Journal ArticleDOI
The plant microbiome.
TL;DR: High-throughput technologies are revealing interactions between these complex communities and their hosts in unprecedented detail, with significant implications for plant health and productivity.
References
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Book
The Mineral Nutrition of Higher Plants
M. H. Martin,H. Marschner +1 more
TL;DR: This chapter discusses the relationship between Mineral Nutrition and Plant Diseases and Pests, and the Soil-Root Interface (Rhizosphere) in Relation to Mineral Nutrition.
Book
Mineral Nutrition of Higher Plants
TL;DR: In this article, the authors discuss the relationship between mineral nutrition and plant diseases and pests, and diagnose deficiency and toxicity of mineral nutrients in leaves and other aerial parts of a plant.
Journal ArticleDOI
Differential Display of Eukaryotic Messenger RNA by Means of the Polymerase Chain Reaction
Peng Liang,Arthur B. Pardee +1 more
TL;DR: A method to separate and clone individual messenger RNAs (mRNAs) by means of the polymerase chain reaction using a set of oligonucleotide primers, one being anchored to the polyadenylate tail of a subset of mRNAs, the other being short and arbitrary in sequence so that it anneals at different positions relative to the first primer.
Journal ArticleDOI
Nuclear DNA content of some important plant species
K. Arumuganathan,E. D. Earle +1 more
TL;DR: This survey identified several horticultural crops in a variety of families with genomes only two or three times as large asArabidopsis and several fruit trees (a pricot, cherry, mango, orange, papaya, and peach) that should facilitate molecular studies of these crops.
Journal ArticleDOI
Bioavailability of soil inorganic P in the rhizosphere as affected by root-induced chemical changes: A review
TL;DR: In this paper, the authors give an overview of those chemical processes that are directly induced by plant roots and which can affect the concentration of P in the soil solution and, ultimately, the bioavailability of soil inorganic P to plants.