根瘤菌
放线菌门
厚壁菌
缓生根瘤菌
生物
蛋白质细菌
结核(地质)
根瘤
微生物种群生物学
共生
寄主(生物学)
农学
植物
细菌
生态学
16S核糖体RNA
古生物学
遗传学
作者
Marineide Rodrigues do Amorim,Lucas William Mendes,Jadson Emanuel Lopes Antunes,Louise Melo de Souza Oliveira,Vânia Maria Maciel Melo,Francisco Artur Forte Oliveira,João Pedro Alves de Aquino,Sandra Mara Barbosa Rocha,Arthur Prudêncio de Araújo Pereira,Antônio Félix da Costa,José de Paula Oliveira,Fábio Fernando de Araújo,Márcia do Vale Barreto Figueiredo,Ademir Sérgio Ferreira de Araújo
标识
DOI:10.1016/j.apsoil.2021.104354
摘要
Nodulation results of a host-specific association between rhizobia and leguminous plants. However, it has been observed a rich and diverse bacterial community inside nodules. This study assessed the bacterial community in nodule of cowpea grown in sites with distinct soil properties to address the hypothesis that these differences could influence the bacterial community inside the nodules. Soil samples and nodules of cowpea were collected in six different sites from Northeastern, Brazil. There was a different bacterial community structure and composition comparing bulk soil and nodules, with lower diversity in the last. However, the bacterial communities inside the nodules were not different comparing all sites. The bacterial communities found inside the nodules belonged to Proteobacteria (Bradyrhizobium and Rhizobium with 97% and 2.63%, respectively), Actinobacteria (Conexibacter and Amycolatopsis with 0.047% and 0.015%, respectively), and Firmicutes (Bacillus and Salipaludibacillus with 0.042% and 0.040%, respectively). Our analysis also showed that bulk soil and nodules presented 99.3% and 0.03% of exclusive OTUs, respectively, while these pools shared 0.4% of the bacterial groups. These results indicate that cowpea selected a specific bacterial group that colonizes the nodules, and it is not influenced by soil properties.
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