Mariangela Hungria


Country: Brazil


  1. Tullio L, Nakatani A, Gomes D, Ollero F, Megias M, Hungria M. Revealing the roles of y4wF and tidC genes in Rhizobium tropici CIAT 899: biosynthesis of indolic compounds and impact on symbiotic properties. Arch Microbiol. 2018;: pubmed publisher
    ..tropici CIAT 899. We discuss the IAA pathways, and, based on our results, we attribute functions to the y4wF and tidC genes of R. tropici. ..
  2. Hungria M, Ribeiro R, Nogueira M. Draft Genome Sequences of Azospirillum brasilense Strains Ab-V5 and Ab-V6, Commercially Used in Inoculants for Grasses and Legumes in Brazil. Genome Announc. 2018;6: pubmed publisher
    ..Although the strains differ in phenotypic properties, their genomes are highly similar. ..
  3. Barros Carvalho G, Paschoal A, Marcelino Guimarães F, Hungria M. Prediction of potential novel microRNAs in soybean when in symbiosis. Genet Mol Res. 2014;13:8519-29 pubmed publisher
    ..This prediction led us to the identification of 9 potential new miRNAs; among these, 4 were conserved in other plants. Moreover, we predicted their target genes might play important roles in the regulation of nodulation. ..
  4. Souza R, Cantão M, Nogueira M, Vasconcelos A, Hungria M. Outstanding impact of soil tillage on the abundance of soil hydrolases revealed by a metagenomic approach. Braz J Microbiol. 2018;49:723-730 pubmed publisher
    ..Our results indicate that agricultural soils under conservative managements may represent a hotspot for bioprospection of hydrolases. ..
  5. Fukami J, Ollero F, de la Osa C, Valderrama Fernández R, Nogueira M, Megias M, et al. Antioxidant activity and induction of mechanisms of resistance to stresses related to the inoculation with Azospirillum brasilense. Arch Microbiol. 2018;: pubmed publisher
    ..We hypothesize that A. brasilense confers protection to maize plants by simultaneous induction of JA and SA pathways, and, under saline stressing conditions, by SA and ABA pathways. ..
  6. Hungria M, Nakatani A, Souza R, Sei F, de Oliveira Chueire L, Arias C. Impact of the ahas transgene for herbicides resistance on biological nitrogen fixation and yield of soybean. Transgenic Res. 2015;24:155-65 pubmed publisher
    ..Similarly, at the final harvest, no grain-yield effects were detected related to the ahas gene or to the specific herbicide. However, clear effects on BNF and grain yield were attributed to location and cropping season. ..
  7. Delamuta J, Gomes D, Ribeiro R, Chueire L, Souza R, Almeida L, et al. Genome Sequence of Bradyrhizobium tropiciagri Strain CNPSo 1112T, Isolated from a Root Nodule of Neonotonia wightii. Genome Announc. 2015;3: pubmed publisher
    ..Operons of nodulation, nitrogen fixation, and uptake hydrogenase were present in the symbiotic island, and the genome encompasses several CDSs of stress tolerance. ..
  8. Dall Agnol R, Plotegher F, Souza R, Mendes I, Dos Reis Júnior F, Bena G, et al. Paraburkholderia nodosa is the main N2-fixing species trapped by promiscuous common bean (Phaseolus vulgaris L.) in the Brazilian 'Cerradão'. FEMS Microbiol Ecol. 2016;92: pubmed publisher
  9. Megías E, Dos Reis Junior F, Ribeiro R, Ollero F, Megias M, Hungria M. Draft Genome Sequence of Pantoea ananatis Strain 1.38, a Bacterium Isolated from the Rhizosphere of Oryza sativa var. Puntal That Shows Biotechnological Potential as an Inoculant. Genome Announc. 2018;6: pubmed publisher
    ..The genome encompasses several CDSs related to plant growth promotion, such as that for siderophore metabolism, and virulence genes characteristic of pathogenic Pantoea spp. are absent. ..

More Information


  1. Imada E, Rolla Dos Santos A, Oliveira A, Hungria M, Rodrigues E. Indole-3-acetic acid production via the indole-3-pyruvate pathway by plant growth promoter Rhizobium tropici CIAT 899 is strongly inhibited by ammonium. Res Microbiol. 2017;168:283-292 pubmed publisher
    ..Although present results arose from in vitro experiments, they provide new insight into the role of nitrogen in early events related to legume nodulation. ..
  2. Souza R, Mendes I, Reis Junior F, Carvalho F, Nogueira M, Vasconcelos A, et al. Shifts in taxonomic and functional microbial diversity with agriculture: How fragile is the Brazilian Cerrado?. BMC Microbiol. 2016;16:42 pubmed publisher
    ..Our results highlight that underneath the rustic appearance of the Cerrado vegetation there is a fragile soil microbial community. ..
  3. Babujia L, Silva A, Nakatani A, Cantão M, Vasconcelos A, Visentainer J, et al. Impact of long-term cropping of glyphosate-resistant transgenic soybean [Glycine max (L.) Merr.] on soil microbiome. Transgenic Res. 2016;25:425-40 pubmed publisher
  4. Delamuta J, Ribeiro R, Gomes D, Souza R, Chueire L, Hungria M. Genome Sequence of Bradyrhizobium pachyrhizi Strain PAC48T, a Nitrogen-Fixing Symbiont of Pachyrhizus erosus (L.) Urb. Genome Announc. 2015;3: pubmed publisher
    ..Several coding sequences (CDSs) of the stress response might help in survival in the tropics. PAC48(T) carries nodD1 and nodK, similar to Bradyrhizobium (Parasponia) ANU 289 and a particular nodD2 gene. ..
  5. Helene L, Gomes D, Delamuta J, Ribeiro R, Souza R, Almeida L, et al. Genome Sequence of Bradyrhizobium viridifuturi Strain SEMIA 690T, a Nitrogen-Fixing Symbiont of Centrosema pubescens. Genome Announc. 2015;3: pubmed publisher
    ..Its draft genome indicates that it belongs to the Bradyrhizobium elkanii superclade. SEMIA 690(T) carries two copies of the regulatory nodD gene, and the nod and nif operons resemble those of Bradyrhizobium diazoefficiens. ..
  6. Dall Agnol R, Costa M, Ribeiro R, Delamuta J, Chueire L, Hungria M. Genome Sequence of Paraburkholderia nodosa Strain CNPSo 1341, a N2-Fixing Symbiont of the Promiscuous Legume Phaseolus vulgaris. Genome Announc. 2016;4: pubmed publisher
    ..Its draft genome contains 8,614,032 bp and 8,068 coding sequences (CDSs). Nodulation and N2-fixation genes were clustered in the genome that also contains several genes of secretion systems and quorum sensing. ..
  7. Ribeiro R, Delamuta J, Gomes D, Souza R, Chueire L, Hungria M. Genome Sequence of Rhizobium ecuadorense Strain CNPSo 671T, an Indigenous N2-Fixing Symbiont of the Ecuadorian Common Bean (Phaseolus vulgaris L.) Genetic Pool. Genome Announc. 2015;3: pubmed publisher
    ..Rhizobium ecuadorense CNPSo 671(T) was isolated from a common bean nodule in Ecuador. The draft genome brings novelty about indigenous rhizobial species in centers of genetic diversity of the legume. ..
  8. Delamuta J, Ribeiro R, Gomes D, Souza R, Chueire L, Hungria M. Genome Sequence of Bradyrhizobium stylosanthis Strain BR 446T, a Nitrogen-Fixing Symbiont of the Legume Pasture Stylosanthes guianensis. Genome Announc. 2016;4: pubmed publisher
    ..Several putative genes that might confer high competitiveness and saprophytic capacity under the stressful conditions of tropical soils were identified in the genome. ..
  9. Aarab S, Arakrak A, Ollero F, Megias M, Gomes D, Ribeiro R, et al. Draft Genome Sequence of Pseudomonas fluorescens Strain ET76, Isolated from Rice Rhizosphere in Northwestern Morocco. Genome Announc. 2016;4: pubmed publisher
    ..Genes encoding for type I to VI secretion systems, PvdQ, proteases, siderophores, hydrogen cyanide synthase, ACC-deaminase, among others, highlight its potential use in biological control of plant pathogens. ..
  10. Del Cerro P, Rolla Santos A, Gomes D, Marks B, del Rosario Espuny M, Rodríguez Carvajal M, et al. Opening the "black box" of nodD3, nodD4 and nodD5 genes of Rhizobium tropici strain CIAT 899. BMC Genomics. 2015;16:864 pubmed publisher
  11. Gomes D, da Silva Batista J, Rolla A, da Silva L, Bloch C, Galli Terasawa L, et al. Proteomic analysis of free-living Bradyrhizobium diazoefficiens: highlighting potential determinants of a successful symbiosis. BMC Genomics. 2014;15:643 pubmed publisher
  12. Megías E, Megías M, Ollero F, Hungria M. Draft Genome Sequence of Pantoea ananatis Strain AMG521, a Rice Plant Growth-Promoting Bacterial Endophyte Isolated from the Guadalquivir Marshes in Southern Spain. Genome Announc. 2016;4: pubmed publisher
    ..The genome encodes genes for N-acylhomoserine lactone (AHL) synthases, AHL hydrolases, hyperadherence (yidQ, yidP, and yidR), fusaric acid resistance, and oxidation of lignin, highlighting its biotechnological potential. ..
  13. Megías E, Reis Junior F, Ribeiro R, Ollero F, Megias M, Hungria M. Genome Sequence of Pantoea ananatis Strain AMG 501, a Plant Growth-Promoting Bacterium Isolated from Rice Leaves Grown in Paddies of Southern Spain. Genome Announc. 2017;5: pubmed publisher
  14. Fukami J, Nogueira M, Araujo R, Hungria M. Accessing inoculation methods of maize and wheat with Azospirillum brasilense. AMB Express. 2016;6:3 pubmed publisher
  15. Siqueira A, Ormeño Orrillo E, Souza R, Rodrigues E, Almeida L, Barcellos F, et al. Comparative genomics of Bradyrhizobium japonicum CPAC 15 and Bradyrhizobium diazoefficiens CPAC 7: elite model strains for understanding symbiotic performance with soybean. BMC Genomics. 2014;15:420 pubmed publisher
  16. Ormeño Orrillo E, Gomes D, Del Cerro P, Vasconcelos A, Canchaya C, Almeida L, et al. Genome of Rhizobium leucaenae strains CFN 299(T) and CPAO 29.8: searching for genes related to a successful symbiotic performance under stressful conditions. BMC Genomics. 2016;17:534 pubmed publisher
  17. Delamuta J, Ribeiro R, Gomes D, Souza R, Chueire L, Hungria M. Genome sequence of Bradyrhizobium embrapense strain CNPSo 2833T, isolated from a root nodule of Desmodium heterocarpon. Braz J Microbiol. 2017;48:9-10 pubmed publisher
    ..The symbiotic island includes nodulation and nitrogen fixation genes resembling the operon organization of B. japonicum. Several CDSs related to secretion proteins and stress tolerance were also identified. ..
  18. Marks B, Megías M, Ollero F, Nogueira M, Araujo R, Hungria M. Maize growth promotion by inoculation with Azospirillum brasilense and metabolites of Rhizobium tropici enriched on lipo-chitooligosaccharides (LCOs). AMB Express. 2015;5:71 pubmed publisher
    ..tropici applied by seed or leaf spray inoculation. The results give strength to the development of a new generation of inoculants carrying microorganisms and microbial molecules. ..
  19. Fukami J, Cerezini P, Hungria M. Azospirillum: benefits that go far beyond biological nitrogen fixation. AMB Express. 2018;8:73 pubmed publisher
  20. Fukami J, Abrantes J, Del Cerro P, Nogueira M, Ollero F, Megias M, et al. Revealing strategies of quorum sensing in Azospirillum brasilense strains Ab-V5 and Ab-V6. Arch Microbiol. 2018;200:47-56 pubmed publisher
    ..was inoculated with the wild-type and transconjugant strains, plant growth was decreased with the transconjugant of Ab-V5-confirming the importance of an AHL-mediated QS system-but did not affect plant growth promotion by Ab-V6. ..
  21. Helene L, Ribeiro R, Hungria M. Genome Sequence of Rhizobium esperanzae Type Strain CNPSo 668, Isolated from Phaseolus vulgaris Nodules in Mexico. Genome Announc. 2017;5: pubmed publisher
    ..9%) with Rhizobium etli Three copies of the regulatory nodD, in addition to other nodulation genes, should define its host specificity. ..
  22. Delamuta J, Menna P, Ribeiro R, Hungria M. Phylogenies of symbiotic genes of Bradyrhizobium symbionts of legumes of economic and environmental importance in Brazil support the definition of the new symbiovars pachyrhizi and sojae. Syst Appl Microbiol. 2017;40:254-265 pubmed publisher
    ..Other potential new symbiovars were also detected. The co-evolution hypotheses is discussed and it is suggested that nodY/K analysis would be useful for investigating the symbiotic diversity of the genus Bradyrhizobium. ..
  23. Del Cerro P, Rolla Santos A, Gomes D, Marks B, Pérez Montaño F, Rodríguez Carvajal M, et al. Regulatory nodD1 and nodD2 genes of Rhizobium tropici strain CIAT 899 and their roles in the early stages of molecular signaling and host-legume nodulation. BMC Genomics. 2015;16:251 pubmed publisher
    ..In general, nodD2 is an activator of nod-gene transcription, but, in specific conditions, it can slightly repress nodD1. nodD1 and nodD2 play other roles beyond nodulation, such as swimming motility and IAA synthesis. ..
  24. Ribeiro R, Helene L, Delamuta J, Hungria M. Genome Sequence of Bradyrhizobium mercantei Strain SEMIA 6399T, Isolated from Nodules of Deguelia costata in Brazil. Genome Announc. 2017;5: pubmed publisher
  25. Megías E, Reis Junior F, Ribeiro R, Megias M, Ollero F, Hungria M. Genome Sequence of Pantoea sp. Strain 1.19, Isolated from Rice Rhizosphere, with the Capacity To Promote Growth of Legumes and Nonlegumes. Genome Announc. 2017;5: pubmed publisher
    ..Several CDSs emphasize its biotechnological potential as an agriculture inoculant. ..
  26. Pérez Montaño F, Del Cerro P, Jiménez Guerrero I, López Baena F, Cubo M, Hungria M, et al. RNA-seq analysis of the Rhizobium tropici CIAT 899 transcriptome shows similarities in the activation patterns of symbiotic genes in the presence of apigenin and salt. BMC Genomics. 2016;17:198 pubmed publisher
    ..It could be possible that the increases in the transcription levels of several genes related to nodulation under saline conditions could represent a strategy to establish symbiosis under abiotic stressing conditions. ..
  27. Ormeño Orrillo E, Menna P, Almeida L, Ollero F, Nicolás M, Pains Rodrigues E, et al. Genomic basis of broad host range and environmental adaptability of Rhizobium tropici CIAT 899 and Rhizobium sp. PRF 81 which are used in inoculants for common bean (Phaseolus vulgaris L.). BMC Genomics. 2012;13:735 pubmed publisher
    ..The genetic determinants of these interesting characteristics remain largely unknown...
  28. Carvalho G, Batista J, Marcelino Guimaraes F, Nascimento L, Hungria M. Transcriptional analysis of genes involved in nodulation in soybean roots inoculated with Bradyrhizobium japonicum strain CPAC 15. BMC Genomics. 2013;14:153 pubmed publisher
    ..Putative symbiotic functions were attributed to some of these genes for the first time. ..
  29. Fukami J, Ollero F, Megias M, Hungria M. Phytohormones and induction of plant-stress tolerance and defense genes by seed and foliar inoculation with Azospirillum brasilense cells and metabolites promote maize growth. AMB Express. 2017;7:153 pubmed publisher