Nitrogen (N) is needed by plants in great quantities. Besides being a nutrient, it also acts as a signal, regulating many downstream processes. Understanding the physiological and molecular processes regulating nitrogen use efficiency (NUE), particularly the below-ground traits related to root architecture, is crucial to reducing N loss and improving the efficacy of N fertilisation. Nitrate is the predominant source of nitrogen in aerobic agricultural soils and many studies have investigated the molecular mechanisms underlying the root response to nitrate, especially in Arabidopsis, one of the best studied model plants in plant biology. Maize is a very important crop, and its root apparatus is quite different from and more complex than that of Arabidopsis. Elucidating the molecular events underlying nitrate regulation of the root architecture in both these species is a crucial step towards improving technology transfer in the field. Auxin has been shown to play a prominent role in the transduction process leading to root architecture adjustments in response to nitrate availability in both Arabidopsis and maize, but the two plants differ in many other specific molecular components of this response

Molecular Physiology of Nitrate Sensing by Roots

Ravazzolo L.;Trevisan S.;Quaggiotti S.
2021

Abstract

Nitrogen (N) is needed by plants in great quantities. Besides being a nutrient, it also acts as a signal, regulating many downstream processes. Understanding the physiological and molecular processes regulating nitrogen use efficiency (NUE), particularly the below-ground traits related to root architecture, is crucial to reducing N loss and improving the efficacy of N fertilisation. Nitrate is the predominant source of nitrogen in aerobic agricultural soils and many studies have investigated the molecular mechanisms underlying the root response to nitrate, especially in Arabidopsis, one of the best studied model plants in plant biology. Maize is a very important crop, and its root apparatus is quite different from and more complex than that of Arabidopsis. Elucidating the molecular events underlying nitrate regulation of the root architecture in both these species is a crucial step towards improving technology transfer in the field. Auxin has been shown to play a prominent role in the transduction process leading to root architecture adjustments in response to nitrate availability in both Arabidopsis and maize, but the two plants differ in many other specific molecular components of this response
Rhizobiology: Molecular Physiology of Plant Roots
978-3-030-84984-9
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3417153
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