Fixating on metals: New insights into the role of metals in nodulation and symbiotic nitrogen fixation
Symbiotic nitrogen fixation is one of the most promising and immediate alternatives to the overuse of polluting nitrogen fertilizers for improving plant nutrition. At the core of this process are a number of metalloproteins that catalyze and provide energy for the conversion of atmospheric nitrogen...
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2014-02-01
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doaj-70be859c8bb44ffb97827335a63890622020-11-24T22:32:55ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2014-02-01510.3389/fpls.2014.0004577003Fixating on metals: New insights into the role of metals in nodulation and symbiotic nitrogen fixationManuel eGonzález-Guerrero0Anna eMatthiadis1Ángela eSaez2Terri A. Long3Universidad Politécnica de MadridNorth Carolina State UniversityUniversidad Politécnica de MadridNorth Carolina State UniversitySymbiotic nitrogen fixation is one of the most promising and immediate alternatives to the overuse of polluting nitrogen fertilizers for improving plant nutrition. At the core of this process are a number of metalloproteins that catalyze and provide energy for the conversion of atmospheric nitrogen to ammonia, eliminate free radicals produced by this process, and create the microaerobic conditions required by these reactions. In legumes, metal cofactors are provided to endosymbiotic rhizobia within root nodule cortical cells. However, low metal bioavailability is prevalent in most soils types, resulting in widespread plant metal deficiency and decreased nitrogen fixation capabilities. As a result, renewed efforts have been undertaken to identify the mechanisms governing metal delivery from soil to the rhizobia, and to determine how metals are used in the nodule and how they are recycled once the nodule is no longer functional. This effort is being aided by improved legume molecular biology tools (genome projects, mutant collections, and transformation methods), in addition to state-of-the-art metal visualization systems.http://journal.frontiersin.org/Journal/10.3389/fpls.2014.00045/fullCopperIronMetalsZinclegumeRhizobia |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Manuel eGonzález-Guerrero Anna eMatthiadis Ángela eSaez Terri A. Long |
spellingShingle |
Manuel eGonzález-Guerrero Anna eMatthiadis Ángela eSaez Terri A. Long Fixating on metals: New insights into the role of metals in nodulation and symbiotic nitrogen fixation Frontiers in Plant Science Copper Iron Metals Zinc legume Rhizobia |
author_facet |
Manuel eGonzález-Guerrero Anna eMatthiadis Ángela eSaez Terri A. Long |
author_sort |
Manuel eGonzález-Guerrero |
title |
Fixating on metals: New insights into the role of metals in nodulation and symbiotic nitrogen fixation |
title_short |
Fixating on metals: New insights into the role of metals in nodulation and symbiotic nitrogen fixation |
title_full |
Fixating on metals: New insights into the role of metals in nodulation and symbiotic nitrogen fixation |
title_fullStr |
Fixating on metals: New insights into the role of metals in nodulation and symbiotic nitrogen fixation |
title_full_unstemmed |
Fixating on metals: New insights into the role of metals in nodulation and symbiotic nitrogen fixation |
title_sort |
fixating on metals: new insights into the role of metals in nodulation and symbiotic nitrogen fixation |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Plant Science |
issn |
1664-462X |
publishDate |
2014-02-01 |
description |
Symbiotic nitrogen fixation is one of the most promising and immediate alternatives to the overuse of polluting nitrogen fertilizers for improving plant nutrition. At the core of this process are a number of metalloproteins that catalyze and provide energy for the conversion of atmospheric nitrogen to ammonia, eliminate free radicals produced by this process, and create the microaerobic conditions required by these reactions. In legumes, metal cofactors are provided to endosymbiotic rhizobia within root nodule cortical cells. However, low metal bioavailability is prevalent in most soils types, resulting in widespread plant metal deficiency and decreased nitrogen fixation capabilities. As a result, renewed efforts have been undertaken to identify the mechanisms governing metal delivery from soil to the rhizobia, and to determine how metals are used in the nodule and how they are recycled once the nodule is no longer functional. This effort is being aided by improved legume molecular biology tools (genome projects, mutant collections, and transformation methods), in addition to state-of-the-art metal visualization systems. |
topic |
Copper Iron Metals Zinc legume Rhizobia |
url |
http://journal.frontiersin.org/Journal/10.3389/fpls.2014.00045/full |
work_keys_str_mv |
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