any rod-shaped bacterium of the genus Rhizobium, typically occurring in the root nodules of leguminous plants and able to fix atmospheric nitrogen
See also nitrogen fixation
Word origin
C20: from rhizo- + Greek bios life
Examples of 'rhizobia' in a sentence
rhizobia
Several leguminous species have been found in metal-contaminated areas, and they oftenharbor metal-tolerant rhizobia.
Camilla Fagorzi, Alice Checcucci, George C. diCenzo, Klaudia Debiec-Andrzejewska,Lukasz Dziewit, Francesco Pini, Alessio Mengoni 2018, 'Harnessing Rhizobia to Improve Heavy-Metal Phytoremediation by Legumes', Geneshttps://www.mdpi.com/2073-4425/9/11/542. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
In addition, these nodules presented defects in the degree of occupation by rhizobia.
Laura A. Basile, Andrés Zalguizuri, Gabriel Briones, Viviana C. Lepek 2018, 'Two Rieske Fe/S Proteins and TAT System in Mesorhizobium loti MAFF303099: DifferentialRegulation and Roles on Nodulation', Frontiers in Plant Sciencehttps://www.frontiersin.org/article/10.3389/fpls.2018.01686/full. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The isolation of indigenous rhizobia provides a basis for the formulation of rhizobial inoculants.
Jann Lasse Grönemeyer, Barbara Reinhold-Hurek 2018, 'Diversity of Bradyrhizobia in Subsahara Africa: A Rich Resource', Frontiers in Microbiologyhttps://www.frontiersin.org/article/10.3389/fmicb.2018.02194/full. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Flavonoids secreted by legumes play a major role as signal molecules for attracting compatible rhizobia.
Doris K. Puozaa, Sanjay K. Jaiswal, Felix D. Dakora 2017, 'African origin of Bradyrhizobium populations nodulating Bambara groundnut (Vigna subterraneaL. Verdc) in Ghanaian and South African soils', PLOS ONE10.1371/journal.pone.0184943. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
However, α-rhizobia were also detected and were occasionally dominant on a few species.
Caroline Bournaud, Sergio Miana de Faria, José Miguel Ferreira dos Santos, PierreTisseyre, Michele Silva, Clémence Chaintreuil, Eduardo Gross, Euan K. James, YvesPrin, Lionel Moulin 2013, 'Burkholderia Species Are the Most Common and Preferred Nodulating Symbionts of thePiptadenia Group (Tribe Mimoseae)', PLoS ONE10.1371/journal.pone.0063478. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The symbiotic significance of each of these polysaccharides varies depending on the specific rhizobia-legume couple.
Sebastián Acosta-Jurado, Pilar Navarro-Gómez, Piedad del Socorro Murdoch, Juan-CarlosCrespo-Rivas, Shi Jie, Lidia Cuesta-Berrio, José-Enrique Ruiz-Sainz, Miguel-ÁngelRodríguez-Carvajal, José-María Vinardell 2016, 'Exopolysaccharide Production by Sinorhizobium fredii HH103 Is Repressed by Genisteinin a NodD1-Dependent Manner', PLOS ONE10.1371/journal.pone.0160499. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Seeds were inoculated by active and inactive strains of rhizobia.
Iu. Kondratiuk, P. Mamenko, S. Kots 2016, 'The influence of different doses of mineral nitrogen on total protein content of rootsand nodules of soybean, inoculated by strains of Bradyrhizobium aponicum with contrastingsymbiotic features', Vìsnik: Kiïvsʹkij Nacìonalʹnij Unìversitet Imenì Tarasa Ševčenka. Bìologìâhttp://biovestnik.com/index.php/biology/article/view/123. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Within symbiotic nodules, rhizobia are intracellularly accommodated in plant-derived membrane compartments, termed symbiosomes.
Ágota Domonkos, Szilárd Kovács, Anikó Gombár, Ernő Kiss, Beatrix Horváth, GyöngyiZ. Kováts, Attila Farkas, Mónika T. Tóth, Ferhan Ayaydin, Károly Bóka, Lili Fodor,Pascal Ratet, Attila Kereszt, Gabriella Endre, Péter Kaló 2017, 'NAD1 Controls Defense-Like Responses in Medicago truncatula Symbiotic Nitrogen FixingNodules Following Rhizobial Colonization in a BacA-Independent Manner', Geneshttps://www.mdpi.com/2073-4425/8/12/387. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Rhizobia strain and plant cultivar interaction specification was observed.
Šenberga Alise, Dubova Laila, Alsiņa Ina, Strauta Liene 2017, 'Rhizobium sp. – a Potential Tool for Improving Protein Content in Peas and Faba Beans',Rural Sustainability Researchhttp://www.degruyter.com/view/j/plua.2017.37.issue-332/plua-2017-0001/plua-2017-0001.xml?format=INT. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Rhizobia within nodules exchange fixed nitrogen for carbon from the legume.
Matthew S Nelson, Michael J Sadowsky 2015, 'Secretion systems and signal exchange between nitrogen-fixing rhizobia and legumes',Frontiers in Plant Sciencehttp://journal.frontiersin.org/Journal/10.3389/fpls.2015.00491/full. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)