Rhizobial Exopolysaccharides and Type VI Secretion Systems: A Promising Way to Improve Nitrogen Acquisition by Legumes
At present, there are numerous examples in which symbiotic nitrogen fixation by rhizobia can totally replace the use of nitrogen fertilizers in legume crops. Over the years, there has been a great effort by research institutions to develop and select rhizobial inoculants adapted for these crops. The...
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doaj-cd29cb67b30742ca85911411787f70cb2021-07-05T05:10:23ZengFrontiers Media S.A.Frontiers in Agronomy2673-32182021-07-01310.3389/fagro.2021.661468661468Rhizobial Exopolysaccharides and Type VI Secretion Systems: A Promising Way to Improve Nitrogen Acquisition by LegumesBruna Fernanda Silva De Sousa0Bruna Fernanda Silva De Sousa1Tereza Cristina Luque Castellane2Lilia Tighilt3Lilia Tighilt4Eliana Gertrudes de Macedo Lemos5Luis Rey6Luis Rey7Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM)-Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Campus de Montegancedo, Madrid, SpainDepartamento de Biotecnología y Biología Vegetal, ETSI Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid, Madrid, SpainLaboratório de Bioquímica de Microrganismos e Plantas, Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal, Universidade Estadual Paulista Júlio de Mesquita Filho, São Paulo, BrazilCentro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM)-Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Campus de Montegancedo, Madrid, SpainLaboratoire d'Ecologie Microbienne, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, AlgeriaLaboratório de Bioquímica de Microrganismos e Plantas, Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal, Universidade Estadual Paulista Júlio de Mesquita Filho, São Paulo, BrazilCentro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM)-Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Campus de Montegancedo, Madrid, SpainDepartamento de Biotecnología y Biología Vegetal, ETSI Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid, Madrid, SpainAt present, there are numerous examples in which symbiotic nitrogen fixation by rhizobia can totally replace the use of nitrogen fertilizers in legume crops. Over the years, there has been a great effort by research institutions to develop and select rhizobial inoculants adapted for these crops. The symbiotic process is highly dependent on the dynamic exchange of signals and molecular nutrients between partners. Our focus in this review was to discuss the two key determinants in successful symbiotic interactions of rhizobia to nodulate pulses. One of them is the production of exopolysaccharides (EPS) and the other the presence of the type VI secretion system (T6SS). EPS are extracellular polymers weakly associated with the bacterial surface and are abundantly released into acid soils facilitating, among other functions, an adaptation of rhizobia to this environment. On the other hand, different protein secretion systems, involved in symbiosis, have been described in rhizobia. This is not the case with the T6SS. The current availability of various rhizobial genomes offers the possibility of discussing its role in symbiosis. The study of these determinants will be of great utility for the selection of effective inoculants for legumes, a promising way to improve nitrogen acquisition by legumes.https://www.frontiersin.org/articles/10.3389/fagro.2021.661468/fullRhizobiumroot nodulating bacteriaeffectorstype VI secretion systemsinoculantexopolysaccharide |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Bruna Fernanda Silva De Sousa Bruna Fernanda Silva De Sousa Tereza Cristina Luque Castellane Lilia Tighilt Lilia Tighilt Eliana Gertrudes de Macedo Lemos Luis Rey Luis Rey |
spellingShingle |
Bruna Fernanda Silva De Sousa Bruna Fernanda Silva De Sousa Tereza Cristina Luque Castellane Lilia Tighilt Lilia Tighilt Eliana Gertrudes de Macedo Lemos Luis Rey Luis Rey Rhizobial Exopolysaccharides and Type VI Secretion Systems: A Promising Way to Improve Nitrogen Acquisition by Legumes Frontiers in Agronomy Rhizobium root nodulating bacteria effectors type VI secretion systems inoculant exopolysaccharide |
author_facet |
Bruna Fernanda Silva De Sousa Bruna Fernanda Silva De Sousa Tereza Cristina Luque Castellane Lilia Tighilt Lilia Tighilt Eliana Gertrudes de Macedo Lemos Luis Rey Luis Rey |
author_sort |
Bruna Fernanda Silva De Sousa |
title |
Rhizobial Exopolysaccharides and Type VI Secretion Systems: A Promising Way to Improve Nitrogen Acquisition by Legumes |
title_short |
Rhizobial Exopolysaccharides and Type VI Secretion Systems: A Promising Way to Improve Nitrogen Acquisition by Legumes |
title_full |
Rhizobial Exopolysaccharides and Type VI Secretion Systems: A Promising Way to Improve Nitrogen Acquisition by Legumes |
title_fullStr |
Rhizobial Exopolysaccharides and Type VI Secretion Systems: A Promising Way to Improve Nitrogen Acquisition by Legumes |
title_full_unstemmed |
Rhizobial Exopolysaccharides and Type VI Secretion Systems: A Promising Way to Improve Nitrogen Acquisition by Legumes |
title_sort |
rhizobial exopolysaccharides and type vi secretion systems: a promising way to improve nitrogen acquisition by legumes |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Agronomy |
issn |
2673-3218 |
publishDate |
2021-07-01 |
description |
At present, there are numerous examples in which symbiotic nitrogen fixation by rhizobia can totally replace the use of nitrogen fertilizers in legume crops. Over the years, there has been a great effort by research institutions to develop and select rhizobial inoculants adapted for these crops. The symbiotic process is highly dependent on the dynamic exchange of signals and molecular nutrients between partners. Our focus in this review was to discuss the two key determinants in successful symbiotic interactions of rhizobia to nodulate pulses. One of them is the production of exopolysaccharides (EPS) and the other the presence of the type VI secretion system (T6SS). EPS are extracellular polymers weakly associated with the bacterial surface and are abundantly released into acid soils facilitating, among other functions, an adaptation of rhizobia to this environment. On the other hand, different protein secretion systems, involved in symbiosis, have been described in rhizobia. This is not the case with the T6SS. The current availability of various rhizobial genomes offers the possibility of discussing its role in symbiosis. The study of these determinants will be of great utility for the selection of effective inoculants for legumes, a promising way to improve nitrogen acquisition by legumes. |
topic |
Rhizobium root nodulating bacteria effectors type VI secretion systems inoculant exopolysaccharide |
url |
https://www.frontiersin.org/articles/10.3389/fagro.2021.661468/full |
work_keys_str_mv |
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