Genome Engineering Program


Publicaciones

# Año Ficha Ligas
1 2014 Santamaria, R.I., Bustos, P., Lozano, L.F., Rodríguez, C., Fernández, J.L., Juárez, S., Kameyama, L., Guarneros, G., Dávila, G. and González, V. (2014). "Narrow-host-range Bacteriophages That Infect Rhizobium etli Associate with Distinct Genomic Types". Appl Environ Microbiol. 80(2):446-454   PUBMED: #24185856
2 2013 Contreras-Moreira, B. and Vinuesa, P. (2013). "GET_HOMOLOGUES, A Versatile Software Package for Scalable and Robust Microbial Pangenome Analysis". Appl Environ Microbiol. 79(24):7696-7701   PUBMED: #24096415
3 2013 Cubillas, C., Vinuesa, P., Tabche, M.L. and García-de los Santos, A. (2013). "Phylogenomic Analysis of Cation Diffusion Facilitator Proteins Uncovers Ni2+/co2+ Transporters". Metallomics. 5(12):1634-1643   PUBMED: #24077251
4 2013 Estrada-de los Santos, P., Vinuesa, P., Martínez-Aguilar, L., Hirsch, A.M. and Caballero-Mellado, J. (2013). "Phylogenetic Analysis Of Burkholderia Species By multilocus Sequence Analysis". Curr Microbiol. 67(1):51-60   PUBMED: #23404651
5 2013 Hernández-Tamayo, R., Sohlenkamp, C., Puente, J.L., Brom, S. and Romero, D. (2013). "Characterization of Inta, a Bidirectional Site-Specific Recombinase Required for Conjugative Transfer of the Symbiotic Plasmid of Rhizobium etli CFN42". J Bacteriol. 195(20):4668-4677   PUBMED: #23935046
6 2012 Bonilla-Rosso, G., Eguiarte, L.E., Romero, D., Travisano, M. and Souza, V. (2012). "Understanding Microbial Community Diversity Metrics Derived from Metagenomes: Performance Evaluation Using Simulated Data Sets". FEMS Microbiol Ecol. 82(1):37-49   PUBMED: #22554028
7 2012 Castillo-Rodal, A.I., Mazari-Hiriart, M., Lloret-Sánchez, L.T., Sachman-Ruíz, B., Vinuesa, P. and López-Vidal, Y (2012). "Potentially Pathogenic Nontuberculous Mycobacteria Found in Aquatic Systems. Analysis from a Reclaimed Water and Water Distribution System in Mexico City". European Journal of Clinical Microbiology and Infectious Diseases. 31(5):683-694   PUBMED: #21805195
8 2012 Escalera-Zamudio, M., Cobian-Guemes, G., Soto-del Río, M.D., Isa, P., Sánchez-Betancourt, I., Parissi-Crivelli, A., Martinez-Cazares, M.T., Romero, P., Velázquez-Salinas, L., Huerta-Lozano, B., Nelson, M., Montero, H., Vinuesa, P., López, S. and Arias, C.F. (2012). "Characterization Of an Influenza a Virus in Mexican Swine that is Related to the a-H1N1-2009 Pandemic Clade". Virology. 433(1):176-182   PUBMED: #22921315
9 2012 Tejerizo, G.T., Lozano, L.F., González, V., Bustos, P., Romero, D. and Brom, S. (2012). "Draft Genome Sequence Of the Bean-nodulating Sinorhizobium fredii Strain GR64". J Bacteriol. 194(24):6978-6978   PUBMED: #23209231
10 2011 Acosta, J.L., Eguiarte, L.E., Santamaria, R.I., Bustos, P., Vinuesa, P., Martínez-Romero, E., Dávila, G. and González, V. (2011). "Genomic Lineages of Rhizobium etli Revealed by the Extent of Nucleotide Polymorphisms and Low Recombination". BMC Evol Biol. 11   PUBMED: #22004448
11 2011 Cervantes, L., Bustos, P., Girard, L., Santamaria, R.I., Dávila, G., Vinuesa, P., Romero, D. and Brom, S. (2011). "The Conjugative Plasmid of a Bean-nodulating Sinorhizobium fredii Strain is Assembled from Sequences of Two Rhizobium Plasmids and the Chromosome of a Sinorhizobium Strain". BMC Microbiol. 11(1):149   PUBMED: #21702991
12 2011 Landeta, C., Dávalos, A., Cevallos, M.A., Geiger, O., Brom, S. and Romero, D. (2011). "Plasmids With a Chromosome-like Role in Rhizobia". J Bacteriol. 193(6):1317-1326   PUBMED: #21217003
13 2011 Silva-Sanchez, J., Garza-Ramos, J.U., Reyna-Flores, F., Sánchez-Pérez, A, Rojas-Moreno, T., Andrade-Almaraz, V., Pastrana, J., Castro-Romero, J.I., Vinuesa, P., Barrios, H. and Cervantesde, C (2011). "Extended-spectrum Beta-lactamase-producing Enterobacteriaceae Causing Nosocomial Infections In Mexico. a Retrospective and Multicenter Study". Arch Med Res. 42(2):156-162   PUBMED: #21565630
14 2011 Villaseñor-Toledo, T., Dávalos, A., Lozano, L.F., Romero, D. and García-de los Santos, A. (2011). "Housekeeping Genes Essential For Pantothenate Biosynthesis Are Plasmid-encoded In Rhizobium etli and Rhizobium leguminosarum". BMC Microbiol. 11   PUBMED: #21463532
15 2010 Miranda-Miranda, E., Cossio-Bayugar, R., Quezada-Delgado, M.D.R., Sachman-Ruíz, B. and Reynaud, E. (2010). "Staphylococcus saprophyticus Is A Pathogen Of The Cattle Tick Rhipicephalus (Boophilus) microplus". Biocontrol Sci. Technol.. 20:1055-1067    
16 2009 Castellanos, M. and Romero, D. (2009). "The Extent of Migration of the Holliday Junction is a Crucial Factor for Gene Conversion in Rhizobium etli". J Bacteriol. 191(15):4987-4995   PUBMED: #19502410
17 2009 Contreras-Moreira, B., Sachman-Ruíz, B., Figueroa-Palacios, I. and Vinuesa, P. (2009). "Primers4clades: A Web Server that Uses Phylogenetic Trees to Design Lineage-Specific PCR Primers for Metagenomic and Diversity Studies". Nucl Acid Res. 37:W95-W100   PUBMED: #19465390
18 2009 Cummings, S.P., Gyaneshwar, P., Vinuesa, P., Farruggia, F.T., Andrews, M., Humphry, D., Elliot, G.N., Nelson, A., Orr, C., Pettitt, D., Shah, G.R., Santos, S.R., Krishnan, H.B., Odee, D., Moreira, F.M., Sprent, J.I., Young, J.P. and James, E.K. (2009). "Nodulation Of Sesbania Species By Rhizobium (Agrobacterium) Strain IRBG74 And Other Rhizobia". Environ Microbiol.   PUBMED: #19555380
19 2009 Martínez-Salazar, J.M., Zuñiga-Castillo, J. and Romero, D. (2009). "Differential Roles of Proteins Involved in Migration of Holliday Junctions on Recombination and Tolerance to DNA Damaging Agents in Rhizobium etli". Gene. 432(1-2):26-32   PUBMED: #19071199
20 2009 Martínez-Salazar, J.M., Sandoval-Calderón, M., Guo, X.W., Castillo-Ramírez, S., Reyes-González, A., Loza-Correa, M., Rivera, J., Alvarado-Affantranger, X., Sánchez, F, González, V., Dávila, G. and Ramírez-Romero, M.Á. (2009). "The Rhizobium etli RpoH1 and RpoH2 Sigma Factors are Involved in Different Stress Responses". Microbiology-sgm. 155:386-397   PUBMED: #19202087
21 2009 Martínez-Salazar, J.M., Salazar, E., Encarnación, S., Ramírez-Romero, M.Á. and Rivera, J. (2009). "Role Of the Extracytoplasmic Function Sigma Factor RpoE4 in Oxidative and Osmotic Stress Responses in Rhizobium etli". J Bacteriol. 191(13):4122-4132   PUBMED: #19376852
22 2008 Cerritos, R., Vinuesa, P., Eguiarte, L.E., Herrera-Estrella, L., Alcaraz-Peraza, L.D., Arvizu-Gomez, J.L., Olmedo, G., Ramirez, E., Siefert, J.L. and Souza, V. (2008). "Bacillus coahuilensis sp nov., a Moderately Halophilic Species from a Desiccation Lagoon in the Cuatro Cienegas Valley in Coahuila, Mexico". Int J Syst Evol Microbiol. 58:919-923    
23 2008 Crossman, LC., Castillo-Ramírez, S., McAnnula, C., Lozano, L., Vernikos, GS., Acosta, JL., Ghazoui, ZF., Hernández-González, I., Meakin, G., Walker, AW., Hynes, MF., Young, JP., Downie, JA., Romero, D., Johnston, AW., Dávila, G., Parkhill, J. and González, V. (2008). "A Common Genomic Framework for a Diverse Assembly of Plasmids in the Symbiotic Nitrogen Fixing Bacteria". Plos One. 3(7):e2567   PUBMED: #18596979
24 2008 García-de los Santos, A., López, E., Cubillas, C., Noel, K.D., Brom, S. and Romero, D. (2008). "Requirement of a Plasmid-encoded Catalase for Survival of Rhizobium etli CFN42 in a Polyphenol-rich Environment". Appl Environ Microbiol. 74(8):2398-2403   PUBMED: #18310436
25 2008 Renteria, M.E., Gandhi, N.S., Vinuesa, P., Helmerhorst, E. and Mancera, R.L. (2008). "A Comparative Structural Bioinformatics Analysis of the Insulin Receptor Family Ectodomain Based on Phylogenetic Information". Plos One. 3(11):e3667    
26 2008 Sepúlveda, E., Perez-Mendoza, D., Ramírez-Romero, M.Á., Soto, M.J., López-Lara, I.M., Geiger, O., Sanjuan, J., Brom, S. and Romero, D. (2008). "Transcriptional Interference And Repression Modulate the Conjugative Ability of the Symbiotic Plasmid of Rhizobium etli". J Bacteriol. 190(12):4189-4197   PUBMED: #18424522
27 2008 Vinuesa, P., Rojas-Jimenez, K., Contreras-Moreira, B., Mahna, S.K., Prasad, B.N., Moe, H., Selvaraju, S.B., Thierfelder, H. and Werner, D. (2008). "Multilocus Sequence Analysis For Assessment of the Biogeography and Evolutionary Genetics of Four Bradyrhizobium Species that Nodulate Soybeans on the Asiatic Continent". Appl Environ Microbiol. 74(22):6987-6996   PUBMED: #18791003
28 2007 Granados-Baeza, M.J., Gómez-Hernández, N., Mora, Y., Delgado, M.J., Romero, D. and Girard, L. (2007). "Novel Reiterated Fnr-type Proteins Control the Production of the Symbiotic Terminal Oxidase Cbb(3) in Rhizobium etli CFN42". Mol Plant Microbe Interactions. 20(10):1241-1249   PUBMED: #17918626
29 2007 Pinero, S., Rivera, J., Romero, D., Cevallos, M.A., Martínez, A., Bolivar, F. and Gosset, G. (2007). "Tyrosinase From Rhizobium etli is Involved in Nodulation Efficiency and Symbiosis-associated Stress Resistance". J Mol Microbiol Biotechnol. 13(1-3):35-44   PUBMED: #17693711
30 2007 Poggio, S., Abreu-Goodger, C., Fabela, S., Osorio, A., Dreyfus, G., Vinuesa, P. and Camarena, L. (2007). "A Complete Set of Flagellar Genes Acquired by Horizontal Transfer Coexists with the Endogenous Flagellar System in Rhodobacter sphaeroides". J Bacteriol. 189(8):3208-3216   PUBMED: #17293429
31 2007 Ramírez-Trujillo, J.A., Encarnación, S., Salazar, E., García-de los Santos, A., Dunn, M.F., Emerich, D.W., Calva, E. and Hernández-Lucas, I. (2007). "Functional Characterization Of The Sinorhizobium meliloti Acetate Metabolism Genes aceA, SMc00767, and glcB". J Bacteriol. 189(16):5875-5884   PUBMED: #17526694
32 2007 Sohlenkamp, C., Galindo-Lagunas, K.A., Guan, Z.Q., Vinuesa, P., Robinson, S., Thomas-Oates, J., Raetz, C.R.H. and Geiger, O. (2007). "The Lipid Lysyl-phosphatidylglycerol Is Present In Membranes of Rhizobium tropici CIAT899 and Confers Increased Resistance to Polymyxin B under Acidic Growth Conditions". Mol Plant Microbe Interactions. 20(11):1421-1430   PUBMED: #17977153
33 2007 Top, E. and Romero, D. (2007). "Evolution and Ecology - Summary". Plasmid. 57(2):223-225    
34 2005 Guillén-Navarro, K., Araíza, G., García-de los Santos, A., Mora, Y. and Dunn, M.F. (2005). "The Rhizobium etli bioMNY Operon Is Involved in Biotin Transport". FEMS Microbiol Lett. 250(2):209-219   PUBMED: #16099603
35 2005 Pérez-Mendoza, D., Sepúlveda, E., Pando, V., Muñoz, S., Nogales, J., Olivares, J., Soto, M.J., Herrera-Cervera, J.A., Romero, D., Brom, S. and Sanjuan, J. (2005). "Identification of the rctA Gene, Which is Required for Repression of Conjugative Transfer of Rhizobial Symbiotic Megaplasmids". J Bacteriol. 187(21):7341-7350   PUBMED: #16237017
36 2005 Santoyo, G., Martínez-Salazar, J.M., Rodríguez, C. and Romero, D. (2005). "Gene Conversion Tracts Associated With Crossovers in Rhizobium etli". J Bacteriol. 187(12):4116-4126   PUBMED: #15937174
37 2005 Santoyo, G. and Romero, D. (2005). "Gene Conversion and Concerted Evolution in Bacterial Genomes". FEMS Microbiol Rev. 29(2):169-183   PUBMED: #15808740
38 2004 Brom, S., Girard, L., Tun-Garrido, C., García-de los Santos, A., Bustos, P., González, V. and Romero, D. (2004). "Transfer of The Symbiotic Plasmid of Rhizobium etli CFN42 Requires Cointegration with p42a, Which may be Mediated by Site-Specific Recombination". J Bacteriol. 186(22):7538-7548   PUBMED: #15516565
39 2004 Perez-Mendoza, D., Dominguez-Ferreras, A., Munoz, S., Soto, M.J., Olivares, J., Brom, S., Girard, L., Herrera-Cervera, J.A. and Sanjuan, J. (2004). "Identification of Functional Mob Regions in Rhizobium etli: Evidence for Self-transmissibility of the Symbiotic Plasmid pRetCFN42d". J Bacteriol. 186(17):5753-5761   PUBMED: #15317780
40 2004 Zuñiga-Castillo, J., Romero, D. and Martínez-Salazar, J.M. (2004). "The Recombination Genes addAB are not Restricted to Gram-positive Bacteria: Genetic Analysis of the Recombination Initiation Enzymes recF and addAB in Rhizobium etli". J Bacteriol. 186(23):7905-7913   PUBMED: #15547262
41 2003 González, V., Bustos, P., Ramírez-Romero, M.Á., Medrano-Soto, A., Salgado, H., Hernández-González, I., Hernandez-Celis, J.C., Quintero, V., Moreno-Hagelsieb, G., Girard, L., Rodríguez, O., Flores, M., Cevallos, M.A., Collado-Vides, J., Romero, D. and Dávila, G. (2003). "The Mosaic Structure of the Symbiotic Plasmid of Rhizobium etli CFN42 and Its Relation to other Symbiotic Genome Compartments". Genome Biol. 4(6)   PUBMED: #12801410
42 2003 Jahn, O.J., Dávila, G., Romero, D. and Noel, K.D. (2003). "Bacs: an Abundant Bacteroid Protein in Rhizobium etli Whose Expression Ex Planta Requires nifA". Mol Plant Microbe Interactions. 16(1):65-73   PUBMED: #12580283
43 2003 Tun-Garrido, C., Bustos, P., González, V. and Brom, S. (2003). "Conjugative Transfer of p42a from Rhizobium etli CFN42, Which is Required for Mobilization of the Symbiotic Plasmid, is Regulated by Quorum Sensing". J Bacteriol. 185(5):1681-1692   PUBMED: #12591886
44 2003 Vargas, M.C., Encarnación, S., Dávalos, A., Reyes-Pérez, A., Mora, Y., García-de los Santos, A., Brom, S. and Mora, J. (2003). "Only One Catalase, katG, is Detectable in Rhizobium etli, and is Encoded along with the Regulator OxyR on a Plasmid Replicon". Microbiology-sgm. 149:1165-1176   PUBMED: #12724378
45 2002 Brom, S., Girard, L., García-de los Santos, A., Sanjuan-Pinilla, J.M., Olivares, J. and Sanjuan, J. (2002). "Conservation Of Plasmid-encoded Traits Among Bean-nodulating Rhizobium Species". Appl Environ Microbiol. 68(5):2555-2561   PUBMED: #11976134
46 2002 Cevallos, M.A., Porta, H., Izquierdo, J., Tun-Garrido, C., García-de los Santos, A., Dávila, G. and Brom, S. (2002). "Rhizobium etli Cfn42 Contains At Least Three Plasmids of the repABC Family: a Structural and Evolutionary Analysis". Plasmid. 48(2):104-116   PUBMED: #12383728
47 2002 Encarnación, S., Vargas, M.C., Dunn, M.F., Dávalos, A., Mendoza, G., Mora, Y. and Mora, J. (2002). "Ania Regulates Reserve Polymer Accumulation and Global Protein Expression in Rhizobium etli". J Bacteriol. 184(8):2287-2295   PUBMED: #11914361
48 2002 Falcon, L.I., Escobar-Briones, E. and Romero, D. (2002). "Nitrogen Fixation Patterns Displayed by Cyanobacterial Consortia in Alchichica Crater-lake, Mexico". Hydrobiologia. 467(1-3):71-78    
49 2002 García-de los Santos, A., Morales, A., Baldoma, L., Clark, S.R.D., Brom, S., Yost, C.K., Hernández-Lucas, I., Aguilar, J. and Hynes, M.F. (2002). "The Glcb Locus of Rhizobium leguminosarum VF39 Encodes an Arabinose-inducible Malate Synthase". Can J Microbiol. 48(10):922-932   PUBMED: #12489782
50 2001 López, O., Morera, C., Miranda-Ríos, J., Girard, L., Romero, D. and Soberón, M. (2001). "Regulation of Gene Expression in Response to Oxygen in Rhizobium etli: Role of FnrN in fixNOQP Expression and in Symbiotic Nitrogen Fixation". J Bacteriol. 183(24):6999-7006   PUBMED: #11717256
51 2000 Brom, S., García-de los Santos, A., Cervantes, L., Palacios, R. and Romero, D. (2000). "In Rhizobium etli Symbiotic Plasmid Transfer, Nodulation Competitivity and Cellular Growth Require Interaction Among Different Replicons". Plasmid. 44(1):34-43   PUBMED: #10873525
52 2000 Flores, M., Mavingui, P., Perret, X., Broughton, W.J., Romero, D., Hernández, G., Dávila, G. and Palacios, R. (2000). "Prediction, Identification, And Artificial Selection Of DNA Rearrangements in Rhizobium: toward a Natural Genomic Design". P Nat Acad Sci USA. 97(16):9138-9143   PUBMED: #10922070
53 2000 Girard, L., Brom, S., Dávalos, A., López, O., Soberón, M. and Romero, D. (2000). "Differential Regulation Of fixN-reiterated Genes in Rhizobium etli by a Novel fixL-fixK-cascade". Mol Plant Microbe Interactions. 13(12):1283-1292   PUBMED: #11106020
54 2000 Martínez-Salazar, J.M. and Romero, D. (2000). "Role Of the ruvB Gene in Homologous and Homeologous Recombination in Rhizobium etli". Gene. 243(1-2):125-131   PUBMED: #10675620
55 2000 Reyes, J.D., Tabche, M.L., Morera, C., Girard, L., Romero, D., Krol, E., Miranda, J. and Soberón, M. (2000). "Expression Pattern Of Rhizobium etli ccmIEFH Genes Involved In c-type Cytochrome Maturation". Gene. 250(1-2):149-157   PUBMED: #10854788
56 2000 Valencia-Morales, E. and Romero, D. (2000). "Recombination Enhancement By Replication (RER) in Rhizobium etli". Genetics. 154(3):971-983   PUBMED: #10757747
57 1999 Brom, S. and Romero, D. (1999). "Plasmid Biology 98: International Symposium on Plasmid Biology". Plasmid. 41(2):141-177   PUBMED: #10087219
58 1999 Corvera, A., Prome, D., Prome, J.C., Martínez-Romero, E. and Romero, D. (1999). "The nolL Gene from Rhizobium etli Determines Nodulation Efficiency by Mediating the Acetylation of the Fucosyl Residue in the Nodulation Factor". Mol Plant Microbe Interactions. 12(3):236-246   PUBMED: #10065560
59 1999 Romero, D., Martínez-Salazar, J.M., Ortíz, E., Rodríguez, C. and Valencia-Morales, E. (1999). "Repeated Sequences in Bacterial Chromosomes and Plasmids: a Glimpse from Sequenced Genomes". Res Microbiol. 150(9-10):735-743   PUBMED: #10673011
60 1999 Wang, E.T., Rogel, M.A., García-de los Santos, A., Martínez, J., Cevallos, M.A. and Martínez-Romero, E. (1999). "Rhizobium etli Bv. Mimosae, A Novel Biovar Isolated from Mimosa affinis". Int J Syst Bact. 49:1479-1491   PUBMED: #10555329
61 1998 Mavingui, P., Laeremans, T., Flores, M., Romero, D., Martínez-Romero, E. and Palacios, R. (1998). "Genes Essential For Nod Factor Production And Nodulation Are Located on a Symbiotic Amplicon (AMPRtrCFN299pc60) in Rhizobium tropici". J Bacteriol. 180(11):2866-2874   PUBMED: #9603874
62 1998 Rodríguez, C. and Romero, D. (1998). "Multiple Recombination Events Maintain Sequence Identity Among Members Of the Nitrogenase Multigene Family in Rhizobium etli". Genetics. 149(2):785-794   PUBMED: #9611191
63 1997 García-de los Santos, A. and Brom, S. (1997). "Characterization of Two Plasmid-borne lps Beta loci of Rhizobium etli Required for Lipopolysaccharide Synthesis and for Optimal Interaction with Plants". Mol Plant Microbe Interactions. 10(7):891-902   PUBMED: #9304861
64 1997 Mavingui, P., Flores, M., Romero, D., Martínez-Romero, E. and Palacios, R. (1997). "Generation Of Rhizobium Strains with Improved Symbiotic Properties by Random DNA Amplification (RDA)". Nat Biotechnol. 15(6):564-569   PUBMED: #9181580
65 1997 Miranda-Ríos, J., Morera, C., Taboada, H., Dávalos, A., Encarnación, S., Mora, J. and Soberón, M. (1997). "Expression of Thiamin Biosynthetic Genes (thiCOGE) And Production of Symbiotic Terminal Oxidase Cbb(3), in Rhizobium etli". J Bacteriol. 179(22):6887-6893   PUBMED: #9371431
66 1997 Romero, D. and Palacios, R. (1997). "Gene Amplification and Genomic Plasticity in Prokaryotes". Annu Rev Genet. 31:91-111   PUBMED: #9442891
67 1996 Dunn, M.F., Encarnación, S., Araíza, G., Vargas, M.C., Dávalos, A., Peralta, H., Mora, Y. and Mora, J. (1996). "Pyruvate Carboxylase From Rhizobium etli: Mutant Characterization, Nucleotide Sequence, and Physiological Role". J Bacteriol. 178(20):5960-5970   PUBMED: #8830693
68 1996 García-de los Santos, A., Brom, S. and Romero, D. (1996). "Rhizobium Plasmids In Bacteria Legume Interactions". World J Microbiol Biotechnol. 12(2):119-125    
69 1996 Girard, L., Valderrama, B., Palacios, R., Romero, D. and Dávila, G. (1996). "Transcriptional Activity of the Symbiotic Plasmid of Rhizobium etli is Affected by Different Environmental Conditions". Microbiology-uk. 142:2847-2856    
70 1996 Valderrama, B., Dávalos, A., Girard, L., Morett, E. and Mora, J. (1996). "Regulatory Proteins And CIS-acting Elements Involved in the Transcriptional Control of Rhizobium etli Reiterated nifH Genes". J Bacteriol. 178(11):3119-3126   PUBMED: #8655489
71 1995 Caballero-Mellado, J., Fuentes-Ramírez, L.E., Reis, V.M. and Martínez-Romero, E. (1995). "Genetic Structure of Acetobacter diazotrophicus Populations And Identification of a New Genetically Distant Group". Appl Environ Microbiol. 61(8):3008-3013   PUBMED: #16535102
72 1995 Romero, D., Martínez-Salazar, J.M., Girard, L., Brom, S., Dávila, G., Palacios, R., Flores, M. and Rodríguez, C. (1995). "Discrete Amplifiable Regions (Amplicons) In The Symbiotic Plasmid of Rhizobium etli CFN42". J Bacteriol. 177(4):973-980   PUBMED: #7860608
73 1993 Flores, M., Brom, S., Stepkowsky, T., Girard, L., Dávila, G., Romero, D. and Palacios, R. (1993). "Gene Amplification In Rhizobium Identification And in vivo Cloning Of Discrete Amplifiable Dna Regions (Amplicons) From Rhizobium leguminosarum Biovar phaseoli". P Nat Acad Sci USA. 90(11):4932-4936   PUBMED: #8506337
74 1993 Morett, E. and Segovia, L. (1993). "The Sigma(54) Bacterial Enhancer-binding Protein Family - Mechanism of Action and Phylogenetic Relationship of their Functional Domains". J Bacteriol. 175(19):6067-6074   PUBMED: #8407777
75 1992 Brom, S., García-de los Santos, A., Stepkowsky, T., Flores, M., Dávila, G., Romero, D. and Palacios, R. (1992). "Different Plasmids Of Rhizobium leguminosarum Bv phaseoli Are Required for Optimal Symbiotic Performance". J Bacteriol. 174(16):5183-5189   PUBMED: #1644746
76 1991 Brom, S., García-de los Santos, A., Girard, L., Dávila, G., Palacios, R. and Romero, D. (1991). "High-frequency Rearrangements In Rhizobium leguminosarum Bv. phaseoli Plasmids". J Bacteriol. 173(3):1344-1346   PUBMED: #1991727
77 1991 Girard, L., Flores, M., Brom, S., Romero, D., Palacios, R. and Dávila, G. (1991). "Structural Complexity Of The Symbiotic Plasmid Of Rhizobium leguminosarum bv phaseoli". J Bacteriol. 173(8):2411-2419   PUBMED: #2013564
78 1991 Martínez-Romero, E., Segovia, L., Martins Mercante, F., Franco, A.A., Graham, P. and Pardo, M.A. (1991). "Rhizobium tropici, A Novel Species Nodulating Phaseolus vulgaris L. Beans And Leucaena Sp. Trees". International Journal of Systematic Bacteriol. 41(3):417-426   PUBMED: #1715738
79 1991 Martínez-Salazar, J.M., Romero, D., Girard, L. and Dávila, G. (1991). "Molecular Cloning and Characterization of the recA Gene of Rhizobium phaseoli and Construction of recA Mutants". J Bacteriol. 173(10):3035-3040   PUBMED: #2022610
80 1991 Romero, D., Brom, S., Martínez-Salazar, J.M., Girard, L., Palacios, R. and Dávila, G. (1991). "Amplification And Deletion of A nod-nif Region in the Symbiotic Plasmid of Rhizobium phaseoli". J Bacteriol. 173(8):2435-2441   PUBMED: #2013567
81 1991 Segovia, L., Piñero, D., Palacios, R. and Martínez-Romero, E. (1991). "Genetic-structure of A Soil Population of Nonsymbiotic Rhizobium leguminosarum". Appl Environ Microbiol. 57(2):426-433   PUBMED: #1707606
82 1991 Vázquez, M., Dávalos, A., De las Peñas, A., Sánchez, F. and Quinto, C. (1991). "Novel Organization Of The Common Nodulation Genes In Rhizobium leguminosarum bv. phaseoli Strains". J Bacteriol. 173(3):1250-1258   PUBMED: #1991718
83 1990 Martínez-Romero, E., Romero, D. and Palacios, R. (1990). "The Rhizobium Genome". Crit Rev Plant Sci. 9(1):59-93    
84 1989 Cevallos, M.A., Vázquez, M., Dávalos, A., Espín Ocampo, E.G., Sepúlveda, J. and Quinto, C. (1989). "Characterization Of Rhizobium phaseoli Sym Plasmid Regions Involved In Nodule Morphogenesis and Host-range Specificity". Mol Microbiol. 3(7):879-889   PUBMED: #2552255
85 1988 Brom, S., Martínez-Romero, E., Dávila, G. and Palacios, R. (1988). "Narrow-and Broad-host-range Symbiotic Plasmids Of Rhizobium spp. Strains that Nodulate Phaseolus vulgaris". Appl Environ Microbiol. 54(5):1280-1283   PUBMED: #16347637
86 1988 Martínez-Romero, E., Flores, M., Brom, S., Romero, D., Dávila, G. and Palacios, R. (1988). "Rhizobium phaseoli: A Molecular Genetics View". Plant Soil. 108(1):179-184    
87 1987 Flores, M., González, V., Brom, S., Martínez-Romero, E., Piñero, D., Romero, D., Dávila, G. and Palacios, R. (1987). "Reiterated Dna Sequences In Rhizobium and Agrobacterium spp.". J Bacteriol. 169(12):5782-5788   PUBMED: #3450286
88 1987 Garcíarrubio, A. and Covarrubias, A. (1987). "Promoter Selection By a Bacterial Enhancer-like Activator Element (BELE) in Escherichia coli". Gene. 54(2-3):275-280   PUBMED: #3308639
89 1985 León, P., Romero, D., Garcíarrubio, A., Bastarrachea, F. and Covarrubias, A. (1985). "Glutamine Synthetase-constitutive Mutation Affecting The glnALG Upstream Promoter Of Escherichia coli". J Bacteriol. 164(3):1032-1038    
90 1983 Dávila, G., Brom, S., Mora, Y., Palacios, R. and Mora, J. (1983). "Genetic and Biochemical Characterization of Glutamine Synthetase from Neurospora crassa Glutamine Auxotrophs and their Revertants". J Bacteriol. 156(3):993-1000   PUBMED: #6139363

Programa de Ingeniería Genómica

Program Responsible: Dr. David Romero.

Este programa está dedicado a la comprensión de las fuerzas y mecanismos que han forjado la arquitectura genómica de proteobacterias asociadas a plantas (específicamente Rhizobium sp.), tanto en el corto plazo como con una perspectiva evolutiva.

El objetivo a largo plazo es utilizar este conocimiento para desarrollar nuevas estrategias en ingeniería genómica. Para ese fin, nuestras líneas de investigación inciden en los mecanismos y consecuencias evolutivas de la recombinación homóloga, recombinación sitio-específica durante la conjugación de plásmidos, regulación de la transferencia conjugativa, genómica funcional de plásmidos (incluyendo el análisis de funciones codificadas en plásmidos y el papel de factores sigma extracitoplásmicos en respuestas a estrés), así como sistemática molecular, microevolución y filogeografía. Parte de este conocimiento se está integrando en la generación de nuevos enfoques para la generación de deleciones programadas y mutagénesis global del genoma.

Nuestro trabajo combina el análisis bioinformático con enfoques genéticos y de biología molecular así como de análisis de genética de poblaciones.

Identification of plasmid-encoded genes involved...

Identification of plasmid-encoded genes involved in the adaptation of Rhizobium etli to the rhizosphere of Phaseolus vulgaris using genetic and genomic approaches.

 

Search for the presence of site-specific recombination systems...

Search for the presence of site-specific recombination systems, similar to the one we found on R. etli CFN42 plasmids, on other Rhizobiacea.

Our previous work has shown the participation of a site-specific recombination in the formation or resolution of cointegrates between the symbiotic plasmid and a smaller, self-transmissible plasmid. These cointegrates are important to achieve conjugative transfer of the pSym. Our work will continue with the search of similar elements on other Rhizobiaceae.

Regulation of conjugative transfer of the symbiotic plasmid of Rhizobium etli


In this line, we are studying the mechanisms involved in repression of a conjugative system present on the pSym of R. etli. This system, which employs one repressor gene rctA) also has interactions with another gene product (RctB) whose overproduction apparently overrides the repression imposed by RctA. Characterization of the regions relevant for transcriptional repression as well as purification and analysis of RctA and RctB are the
objectives of this line.

Systematic analysis of Rhizobium plasmids by programmed deletions


Continuing with our interest in functions encoded in Rhizobium plasmids, we are generating a collection of programmed deletions in each of the six large plasmids of Rhizobium etli. Strains resulting from this work will be used in experiments of functional genomics.

Participants: Araceli Dávalos, Alejandro García, Susana Brom, David Romero

Generation of tools for genome engineering in Rhizobium


Genome Engineering is defined as the in vivo modification of the genome, using homologous or site-specific recombination. In this area, we are taking advantage of our previous experience in selection of genome rearrangements. Moreover, we are implementing several tools for

Dr. Alejandro García de los Santos - "Contribuciones al análisis funcional de los plásmidos de Rhizobium etli CFN42"

10 Dic 2007 - 12:00
10 Dic 2007 - 14:00
Etc/GMT-5
Titulo del Seminario / Conferencia: 

"Contribuciones al análisis funcional de los plásmidos de Rhizobium etli CFN42"

Lugar: 

Auditorio "Dr. Guillermo Soberón", Centro de Ciencias Genómicas, UNAM

Institución: 

Centro de Ciencias Genómicas, UNAM

Dr. David Romero - "El genoma de Rhizobium etli: de la fluidez a la función"

28 Mayo 2007 - 12:00
28 Mayo 2007 - 13:00
Etc/GMT-5
Titulo del Seminario / Conferencia: 

"El genoma de Rhizobium etli: de la fluidez a la función"

Dra. Susana Brom - "Transferencia conjugativa y generación de quimeras en Rhizobium"

15 Oct 2007 - 12:00
15 Oct 2007 - 14:00
Etc/GMT-5
Titulo del Seminario / Conferencia: 

"Transferencia conjugativa y generación de quimeras en Rhizobium"

Projects

Program Responsible: Dr. David Romero.