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M. R. Steffens · SciRah

Researcher profile · Semantic Scholar

M. R. Steffens

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M. R. Steffens — researcher profile on SciRah

h-index: 22
Works: 66
Citations: 1,900

Most-cited papers

Swine and Poultry Pathogens: the Complete Genome Sequences of Two Strains of Mycoplasma hyopneumoniae and a Strain of Mycoplasma synoviae
Ana Tereza Ribeiro de Vasconcelos, H. Ferreira, C. Bizarro, S. Bonatto +82 more
2005Journal of Bacteriology307 citations Open access
Semantic Scholar
Genome of Herbaspirillum seropedicae Strain SmR1, a Specialized Diazotrophic Endophyte of Tropical Grasses
F. Pedrosa, R. Monteiro, R. Wassem, L. Cruz +78 more
2011PLoS Genetics222 citations Open access
Semantic Scholar
Robust biological nitrogen fixation in a model grass-bacterial association.
Vania Pankievicz, F. D. Do Amaral, K. F. D. N. Santos, Beverly J. Agtuca +8 more
2015The Plant Journal197 citations Open access
Semantic Scholar
Endophytic Herbaspirillum seropedicae expresses nif genes in gramineous plants.
Lauren D B Roncato-Maccari, Humberto J. O. Ramos, F. Pedrosa, Y. Alquini +5 more
2003FEMS Microbiology Ecology150 citations Open access
Semantic Scholar
Morphological and genetic characterization of endophytic bacteria isolated from roots of different maize genotypes
A. Ikeda, Luciana Lange Bassani, Douglas Adamoski, D. Stringari +5 more
2012Microbial Ecology82 citations
Semantic Scholar
GFinisher: a new strategy to refine and finish bacterial genome assemblies
Dieval Guizelini, R. Raittz, L. Cruz, E. M. Souza +2 more
2016Scientific Reports63 citations Open access
Semantic Scholar
PHB Biosynthesis Counteracts Redox Stress in Herbaspirillum seropedicae
M. Batista, C. S. Teixeira, M. Sfeir, L. P. Alves +7 more
2018Frontiers in Microbiology58 citations Open access
Semantic Scholar
Nitrogen fixation control in Herbaspirillum seropedicae
L. Chubatsu, R. Monteiro, E. M. Souza, M. A. S. Oliveira +7 more
2012Plant and Soil53 citations
Semantic Scholar
Wheat colonization by an Azospirillum brasilense ammonium-excreting strain reveals upregulation of nitrogenase and superior plant growth promotion
K. F. D. N. Santos, V. Moure, V. Hauer, A. Santos +6 more
2017Plant and Soil43 citations
Semantic Scholar
Rapid identification of bacterial isolates from wheat roots by high resolution whole cell MALDI-TOF MS analysis.
M. I. Stets, A. S. Pinto, L. Huergo, E. D. de Souza +6 more
2013Journal of Biotechnology43 citations Open access
Semantic Scholar
Phenotypic and genotypic traits of Shiga toxin‐producing Escherichia coli strains isolated from beef cattle from Paraná State, southern Brazil
S. S. Farah, E. M. de Souza, F. O. Pedrosa, K. Irino +5 more
2007Letters in Applied Microbiology40 citations
Semantic Scholar
In Vitro Interactions between the PII Proteins and the Nitrogenase Regulatory Enzymes Dinitrogenase Reductase ADP-ribosyltransferase (DraT) and Dinitrogenase Reductase-activating Glycohydrolase (DraG) in Azospirillum brasilense*
L. Huergo, M. Merrick, R. Monteiro, L. Chubatsu +3 more
2009Journal of Biological Chemistry39 citations Open access
Semantic Scholar
Identification of Proteins Associated with Polyhydroxybutyrate Granules from Herbaspirillum seropedicae SmR1 - Old Partners, New Players
Evandro F. Tirapelle, Marcelo Muller-Santos, M. Tadra-Sfeir, M. A. Kadowaki +5 more
2013PLoS ONE37 citations Open access
Semantic Scholar
GlnB is specifically required for Azospirillum brasilense NifA activity in Escherichia coli.
L. Araújo, R. Monteiro, E. M. Souza, M. R. Steffens +3 more
2004Research in Microbiology35 citations Open access
Semantic Scholar
Labeled Azospirillum brasilense wild type and excretion-ammonium strains in association with barley roots.
A. Santos, R. Etto, Rafaela Wiegand Furmam, D. L. de Freitas +6 more
2017Plant physiology and biochemistry : PPB29 citations
Semantic Scholar
Comparative Genomics of Sibling Species of Fonsecaea Associated with Human Chromoblastomycosis
V. Vicente, V. Weiss, Amanda Bombassaro, L. Moreno +24 more
2017Frontiers in Microbiology29 citations Open access
Semantic Scholar
Structural organization and regulation of the nif genes of Herbaspirillum seropedicae
F. Pedrosa, K. Teixeira, I. M. Machado, M. R. Steffens +8 more
199729 citations
Semantic Scholar
Characterization of the orf1glnKamtB operon of Herbaspirillum seropedicae
Lilian Noindorf, F. Rego, V. Baura, R. Monteiro +7 more
2006Archives of Microbiology25 citations
Semantic Scholar
Regulation of glnB gene promoter expression in Azospirillum brasilense by the NtrC protein.
L. Huergo, E. M. Souza, M. R. Steffens, M. Yates +2 more
2003FEMS Microbiology Letters24 citations
Semantic Scholar
A prospective study on Shiga toxin‐producing Escherichia coli in children with diarrhoea in Paraná State, Brazil
F. de Toni, E. M. de Souza, F. Pedrosa, G. Klassen +6 more
2009Letters in Applied Microbiology23 citations
Semantic Scholar
Draft Genome Sequence of Herbaspirillum lusitanum P6-12, an Endophyte Isolated from Root Nodules of Phaseolus vulgaris
V. Weiss, H. Faoro, M. Tadra-Sfeir, R. Raittz +11 more
2012Journal of Bacteriology22 citations Open access
Semantic Scholar
Prokaryotic communities of acidic peatlands from the southern Brazilian Atlantic Forest
R. Etto, L. Cruz, E. C. Jesus, C. W. Galvão +4 more
2012Brazilian Journal of Microbiology22 citations Open access
Semantic Scholar
Proteomic analysis of Herbaspirillum seropedicae reveals ammonium-induced AmtB-dependent membrane sequestration of PII proteins.
L. Huergo, Lilian Noindorf, C. Gimenes, R. D. Lemgruber +8 more
2010FEMS Microbiology Letters22 citations
Semantic Scholar
Backup Expression of the PhaP2 Phasin Compensates for phaP1 Deletion in Herbaspirillum seropedicae, Maintaining Fitness and PHB Accumulation
L. P. Alves, C. S. Teixeira, Evandro F. Tirapelle, L. Donatti +6 more
2016Frontiers in Microbiology21 citations Open access
Semantic Scholar
In vitro uridylylation of the Azospirillum brasilense N-signal transducing GlnZ protein.
M. S. Araujo, V. Baura, E. M. Souza, E. Benelli +4 more
2004Protein Expression and Purification21 citations
Semantic Scholar
NAD+ biosynthesis in bacteria is controlled by global carbon/nitrogen levels via PII signaling
A. Santos, E. M. Gerhardt, Erick Parize, F. O. Pedrosa +8 more
2020Journal of Biological Chemistry20 citations Open access
Semantic Scholar
Effect of the over-expression of PII and PZ proteins on the nitrogenase activity of Azospirillum brasilense.
L. Huergo, Angela Filipaki, L. Chubatsu, M. Yates +3 more
2005FEMS Microbiology Letters20 citations Open access
Semantic Scholar
Potential roles for the glnB and ntrYX genes in Azospirillum brasilense.
Josiane C. Vitorino, M. R. Steffens, Hidevaldo B. Machado, M. Yates +2 more
2001FEMS Microbiology Letters20 citations Open access
Semantic Scholar
The glnAntrBC operon of Herbaspirillum seropedicae is transcribed by two oppositely regulated promoters upstream of glnA.
S. Schwab, Emanuel M. Souza, M. Yates, D. Persuhn +4 more
2007Canadian Journal of Microbiology (print)16 citations
Semantic Scholar
The Herbaspirillum seropedicae SmR1 Fnr orthologs controls the cytochrome composition of the electron transport chain
M. Batista, M. Sfeir, H. Faoro, R. Wassem +5 more
2013Scientific Reports15 citations Open access
Semantic Scholar
The Protein-Protein Interaction Network Reveals a Novel Role of the Signal Transduction Protein PII in the Control of c-di-GMP Homeostasis in Azospirillum brasilense
E. M. Gerhardt, Erick Parize, Fernanda Gravina, Flávia L. D. Pontes +13 more
2020mSystems14 citations Open access
Semantic Scholar
Expression, purification, and DNA-binding activity of the Herbaspirillum seropedicae RecX protein.
C. W. Galvão, F. Pedrosa, E. M. Souza, M. Yates +2 more
2004Protein Expression and Purification13 citations
Semantic Scholar
Structural characterization of the RNA chaperone Hfq from the nitrogen-fixing bacterium Herbaspirillum seropedicae SmR1.
M. Kadowaki, J. Iulek, J. Barbosa, Fábio de Oliveira Pedrosa +5 more
2012Biochimica et Biophysica Acta11 citations Open access
Semantic Scholar
Polymorphisms of the promoter and exon 3 of the receptor for advanced glycation end products (RAGE) in Euro‐ and Afro‐Brazilians
M. Torres, M. Beltrame, I. C. Santos, G. Picheth +4 more
2012International Journal of Immunogenetics11 citations
Semantic Scholar
Draft Genome Sequence of Herbaspirillum huttiense subsp. putei IAM 15032, a Strain Isolated from Well Water
Vanely de Souza, Vitor C. Piro, H. Faoro, M. Tadra-Sfeir +11 more
2013Genome Announcements10 citations Open access
Semantic Scholar
Expression, purification, and functional analysis of the C-terminal domain of Herbaspirillum seropedicae NifA protein.
R. Monteiro, E. M. Souza, M. Yates, M. R. Steffens +2 more
2003Protein Expression and Purification10 citations
Semantic Scholar
Ardra profiles of bacteria and archaea in mangrove sediments with different levels of contamination in the estuarine complex of Paranaguá, Brazil
C. Ribeiro, M. R. Steffens, R. Etto, C. W. Galvão +3 more
20139 citations Open access
Semantic Scholar
The expression of nifB gene from Herbaspirillum seropedicae is dependent upon the NifA and RpoN proteins.
F. Rego, F. Pedrosa, L. Chubatsu, M. Yates +4 more
2006Canadian Journal of Microbiology (print)9 citations
Semantic Scholar
Defining the impact of exoribonucleases in the shift between exponential and stationary phases
V. Pobre, Susana Barahona, Tatiane Dobrzanski, M. R. Steffens +1 more
2019Scientific Reports7 citations Open access
Semantic Scholar
Draft Genome Sequence of Fonsecaea monophora Strain CBS 269.37, an Agent of Human Chromoblastomycosis
Amanda Bombassaro, S. de Hoog, V. Weiss, E. M. Souza +19 more
2016Genome Announcements7 citations Open access
Semantic Scholar
Complete Genome Sequence of Herbaspirillum hiltneri N3 (DSM 17495), Isolated from Surface-Sterilized Wheat Roots
Dieval Guizelini, Paula M Saizaki, N. Coimbra, V. Weiss +11 more
2015Genome Announcements7 citations Open access
Semantic Scholar
Quinolone resistance and ornithine decarboxylation activity in lactose-negative Escherichia coli
Franciane Gomig, C. W. Galvão, D. L. de Freitas, Larissa Labas +8 more
2015Brazilian Journal of Microbiology7 citations Open access
Semantic Scholar
The RecX protein interacts with the RecA protein and modulates its activity in Herbaspirillum seropedicae
C. W. Galvão, Emanuel M. Souza, R. Etto, F. O. Pedrosa +5 more
2012Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas7 citations Open access
Semantic Scholar
The recX gene product is involved in the SOS response in Herbaspirillum seropedicae.
C. W. Galvão, F. Pedrosa, E. M. Souza, M. Yates +2 more
2003Canadian Journal of Microbiology (print)7 citations
Semantic Scholar
Expression, purification, and DNA-binding activity of the solubilized NtrC protein of Herbaspirillum seropedicae.
A. L. Twerdochlib, L. Chubatsu, E. M. Souza, F. Pedrosa +3 more
2003Protein Expression and Purification7 citations
Semantic Scholar
Structural organization of the glnBA region of the Azospirillum brasilense genome
P. Castellen, R. Wassem, R. Monteiro, L. Cruz +4 more
20096 citations
Semantic Scholar
Genome Sequence of Type Strain Fonsecaea multimorphosa CBS 980.96T, a Causal Agent of Feline Cerebral Phaeohyphomycosis
Aniele C. Ribas Leao, V. Weiss, V. Vicente, F. Costa +13 more
2017Genome Announcements5 citations Open access
Semantic Scholar
In silico prediction and expression profile analysis of small non-coding RNAs in Herbaspirillum seropedicae SmR1
Tatiane Dobrzanski, V. Pobre, L. Moreno, Helba Cirino de Souza Barbosa +5 more
2020BMC Genomics4 citations Open access
Semantic Scholar
Azospirillum brasilense PII proteins GlnB and GlnZ do not form heterotrimers and GlnB shows a unique trimeric uridylylation pattern
J. Inaba, L. Huergo, A. C. Bonatto, L. Chubatsu +6 more
20094 citations
Semantic Scholar
Repressor Mutant Forms of the Azospirillum brasilense NtrC Protein
L. Huergo, M. C. Assumpção, E. M. Souza, M. R. Steffens +3 more
2004Applied and Environmental Microbiology4 citations Open access
Semantic Scholar

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F. Pedrosa×28
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L. Chubatsu×28
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E. M. Souza×25
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