Symbiosis of rhizobia with Gliricidia sepium and Clitoria fairchildiana in an Oxisol in the pre-Amazon region of Maranhão State

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dc.creatorKatia Pereira Coelho
dc.creatorPaula Rose de Almeida Ribeiro
dc.creatorEmanoel Gomes de Moura
dc.creatorAlana das Chagas Ferreira Aguiar
dc.creatorTainara Louzada Rodrigues
dc.creatorFatima Maria de Souza Moreira
dc.date2018
dc.date.accessioned2026-07-07T03:55:32Z
dc.descriptionGliricidia (Gliricidia sepium) and sombreiro (Clitoria fairchildiana) have been recommended for agroforestry systems and reforestation of degraded areas due to their fast growth and symbiosis with rhizobia. However, little is known about native populations that nodulate these species. The objective of this study was to evaluate the phenotypic and genetic diversity of nitrogen-fixing bacteria isolated from nodules of gliricidia and sombreiro in alley cropping systems located in the pre-Amazon region of Maranhão State and to confirm their nodulation ability. Nodules were field collected from 20 plants of each species. The isolated strains were characterized morphologically, their 16S rRNA gene was partially sequenced, and their symbiotic ability was authenticated in siratro (Macroptilium atropurpureum). Despite being in the same climate and soil conditions, gliricidia and sombreiro are nodulated by different rhizobia genera, with Rhizobium predominant in gliricidia and Bradyrhizobium in sombreiro. Endophytic strains also colonized nodules in the field. Approximately 60% of Rhizobium strains did not nodulate siratro, whereas all Bradyrhizobium strains did. Native strains isolated from gliricidia nodules had low efficiency, and only four strains isolated from sombreiro nodules were efficient in siratro. These results highlight the importance of symbiotic relationships in the regulation of biological nitrogen fixation.
dc.formatapplication/pdf
dc.identifier1679-9275
dc.identifierhttps://www.redalyc.org/articulo.oa?id=303058204013
dc.identifierhttps://www.redalyc.org/journal/3030/303058204013/
dc.identifierhttps://www.redalyc.org/journal/3030/303058204013/html/
dc.identifierhttps://www.redalyc.org/journal/3030/303058204013/303058204013.epub
dc.identifierhttps://www.redalyc.org/journal/3030/303058204013/movil
dc.identifier10.4025/actasciagron.v40i1.35248
dc.identifier.urihttp://hdl.handle.net/123456789/447625
dc.languageen
dc.publisherUniversidade Estadual de Maringá
dc.relationhttp://www.redalyc.org/revista.oa?id=3030
dc.rightsActa Scientiarum. Agronomy
dc.sourceActa Scientiarum. Agronomy (Brasil) Vol.40
dc.subjectAgrociencias
dc.titleSymbiosis of rhizobia with Gliricidia sepium and Clitoria fairchildiana in an Oxisol in the pre-Amazon region of Maranhão State
dc.typeartículo científico

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Acta Scientiarum. Agronomy - Universidade Estadual de Maringá