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Plant and Soil

Resumen/Descripción – provisto por la editorial en inglés

Plant and Soil publishes original papers and review articles exploring the interface of plant biology and soil sciences, and offering a clear mechanistic component. This includes both fundamental and applied aspects of mineral nutrition, plant-water relations, symbiotic and pathogenic plant-microbe interactions, root anatomy and morphology, soil biology, ecology, agrochemistry and agrophysics. Articles discussing a major molecular or mathematical component also fall within the scope of the journal. All contributions appear in the English language.

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Institución detectada	Período	Navegá	Descargá	Solicitá
No detectada	desde ene. 1997 / hasta dic. 2023	SpringerLink

Información

Tipo de recurso:

revistas

ISSN impreso

0032-079X

ISSN electrónico

1573-5036

Editor responsable

Springer Nature

País de edición

Reino Unido

Fecha de publicación

1949-

Cobertura temática

Ciencias biológicas

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doi: 10.1007/s11104-021-05069-7

Interactive regulation of root exudation and rhizosphere denitrification by plant metabolite content and soil properties

Daniel Maurer; François Malique; Salah Alfarraj; Gada Albasher; Marcus A. Horn; Klaus Butterbach-Bahl; Michael Dannenmann; Heinz Rennenberg

<jats:title>Abstract</jats:title><jats:sec> <jats:title>Aims</jats:title> <jats:p>Root exudates are known to shape microbial activities in the rhizosphere and to be of fundamental importance for plant-soil-microbe-carbon–nitrogen interactions. However, it remains unclear how and to what extent the amount and composition of root exudation affects rhizosphere denitrification.</jats:p> </jats:sec><jats:sec> <jats:title>Methods</jats:title> <jats:p>In this study root exudation patterns and rhizosphere denitrification enzyme activity of three different grass species grown on two agricultural soils under two different soil water contents were investigated under controlled conditions.</jats:p> </jats:sec><jats:sec> <jats:title>Results</jats:title> <jats:p>We found that root exudation of primary metabolites largely depends on plant species, soil type, soil moisture and root exudation medium. In dependence of soil properties and soil moisture levels, plants largely controlled amount and quality of root exudation. Exudates affected denitrification activity and plant–microbe competition for nitrate. Specifically, exudation of organic acids stimulated denitrifying activity while the sugar lyxose exhibited an inhibitory effect.</jats:p> </jats:sec><jats:sec> <jats:title>Conclusion</jats:title> <jats:p>We show that interactive effects of physicochemical soil properties and species-specific effects of plant metabolism on root exudation act as a dominant control of rhizosphere denitrification, thereby explaining more than half of its variance.</jats:p> </jats:sec>