C. Lang, M. J. Barnett, R. F. Fisher, L. S. Smith, M. E. Diodati, and S. R. Long (2018) Most Sinorhizobium meliloti extracytoplasmic function sigma factors control accessory functions mSphere 3:e00454-18.
N. R. Ratib, E. Y. Sabio, C. Mendoza, M. J. Barnett, S. B. Clover, J. A. Ortega, F. M. Dela Cruz, D. Balderas, H. White, S. R. Long, and E. J. Chen (2018) Genome-wide identification of genes directly regulated by ChvI and a consensus sequence for ChvI binding in Sinorhizobium meliloti. Mol. Microbiol. in press: doi: 10.1111/mmi.14119.
M. J. Barnett and S. R. Long (2018) Novel genes and regulators that influence production of cell surface exopolysaccharides in Sinorhizobium meliloti. J. Bacteriol. 200:e00501-17.
M. J. Barnett and S. R. Long (2015) The Sinorhizobium meliloti SyrM regulon: effects on global gene expression are mediated by syrA and nodD3. J. Bacteriol. 197:792-806.
Schlüter, J.-P., J. Reinkensmeier, M. J. Barnett, C. Lang, E. Krol, R. Giegerich, S. R. Long, and A. Becker. (2013) Global mapping of transcription start sites and promoter motifs in the symbiotic alpha-proteobacterium Sinorhizobium meliloti 1021. BMC Genomics 14:156.
M. J. Barnett, A. N. Bittner, C. J. Toman, V. Oke, and S. R. Long. (2012) Dual RpoH sigma factors and transcriptional plasticity in a symbiotic bacterium. J. Bacteriol. 194:4983-4994.
Fields, A. T., C. S. Navarrette, A. Z. Zare, Z. Huang, M. Mostafavi, J. C. Lewis, Y. Rezaeihaghighi, B. J. Brezler, S. Ray, A. L. Rizzacasa, M. J. Barnett, S. R. Long, E. J. Chen, and J. C. Chen. (2012) The conserved polarity factor PodJ1 impacts multiple cell envelope associated functions in Sinorhizobium meliloti. Mol. Microbiol. 84:892-920.
Krol, E., J. Blom, J. Winnebald, A. Berhörster, M. J. Barnett, A. Goesmann, J. Baumbach, and A. Becker. (2011) RhizoRegNet--a database of rhizobial transcription factors and regulatory networks. J. Biotechnol. 155:127-134.
Gao, M, M. J. Barnett, S. R. Long, and M. Teplitski. (2010) Role of the Sinorhizobium meliloti global regulator Hfq in gene regulation and symbiosis. Mol. Plant Microbe Interact. 4:355-365.
Becker, A., M. J. Barnett, D. Capela, M. Dondrup, P. B. Kamp, E. Krol, B. Linke, S. Rüberg, K. Runte, B. K. Schroeder, S. Weidner, S. N. Yurgel, J. Batut, S. R. Long, A. Pühler, and A. Goesmann. (2009) A portal for rhizobial genomes: RhizoGATE integrates a Sinorhizobium meliloti genome annotation update with postgenome data. J. Biotechnol. 140:45-50
Griffitts, J. S, R. E. Carlyon, J. H. Erickson, J. L. Moulton, M. J. Barnett, C. J. Toman, and S. R. Long (2008) A Sinorhizobium meliloti osmosensory two-component system required for cyclic glucan export and symbiosis. Mol. Microbiol. 69:479-490.
Gibson, K. E., M. J. Barnett, C. J. Toman, S. R. Long, and G. C. Walker (2007) The symbiosis regulator CbrA modulates a complex regulatory network affecting the flagellar apparatus and cell envelope proteins. J. Bacteriol. 189:3591-3602.
Barnett, M. J. and R. F. Fisher (2006) Review article: Global gene expression in the rhizobial-legume symbiosis. Symbiosis 42:1-24.
Barnett, M. J. and M. L. Kahn (2005) pSymA of Sinorhizobium meliloti: nitrogen fixation and more. In: Genomes and Genomics of Nitrogen-Fixing Organisms, edited by R. Palacios and W. E. Newton pp. 113-132. Springer, Netherlands.
Barnett, M. J., C. J. Toman, R. F. Fisher, and S. R. Long. (2004) A dual-genome Symbiosis Chip for coordinate study of signal exchange and development in a prokaryotic-host interaction. Proc. Natl. Acad. Sci. USA. 101:16636-16641. Link to open access paper at PNAS
Karlin, S., M. J. Barnett, A. M. Campbell, R. F. Fisher, and J. Mrázek. (2003) Predicting gene expression levels from codon biases in alpha-protobacterial genomes. Proc. Natl. Acad. Sci. USA. 100:7313-7318.
Galibert, F., T. M. Finan, S. R. Long, A. Pühler, A. P. Abola, F. Ampe, F. Barloy-Hubler, M. J. Barnett, A. Becker, P. Boistard, G. Bothe, M. Boutry, L. Bowser, J. Buhrmester, E. Cadieu, D. Capela, P. Chain, A. Cowie, R. W. Davis, S. Dréano, N. A. Federspiel, R. F. Fisher, S. Gloux, T. Godrie, A. Goffeau, B. Golding, J. Gouzy, M. Gurjal, I. Hernandez-Lucas, A. Hong, L. Huizar, R. W. Hyman, T. Jones, D. Kahn, M. Kahn, S. Kalman, D. H. Keating, E. Kiss, C. Komp, V. Lelaure, D. Masuy, C. Palm, M. C. Peck, T. M. Pohl, D. Portetelle, B. Purnelle, U. Ramsperger, R. Surzycki, P. Thébault, M. Vandenbol, F.-J. Vorhölter, S. Weidner, D. H. Wells, K. Wong, K.-C. Yeh, and J. Batut. (2001). The composite genome of the legume symbiont Sinorhizobium meliloti. Science. 293:668-672.
Barnett, M. J., R. F. Fisher, T. Jones, C. Komp, P. A. Abola, F. Barloy-Hubler, L. Bowser, D. Capela, F. Galibert, J. Gouzy, M. Gurjal, A. Hong, L. Huizar, R. W. Hyman, D. Kahn, M. L. Kahn, S. Kalman, D. H. Keating, C. Palm, M. C. Peck, R. Surzycki, D. H. Wells, K.-C. Yeh, R. W. Davis, N. A. Federspiel, and S. R. Long. (2001) Nucleotide sequence and predicted functions of the entire Sinorhizobium meliloti pSymA megaplasmid. Proc. Natl. Acad. Sci. USA. 98:9883-9888.
Barnett, M. J., D. Y. Hung, A. Reisenauer, L. Shapiro, and S. R. Long. (2001) A homolog of the CtrA cell cycle regulator is present and essential in Sinorhizobium meliloti. J. Bacteriol.183:3204-3210.
Barnett, M. J., V. Oke, and S. R. Long. (2000) New genetic tools for use in the Rhizobiaceae and other bacteria. Biotechniques 29:240-245.
Barloy-Hubler, F., D. Capela, M. J. Barnett, S. Kalman, N. A. Federspiel, S. R. Long, and F. Galibert. (2000) High resolution physical map of the Sinorhizobium meliloti 1021 pSyma megaplasmid. J. Bacteriol. 184:1185-1189.
Barnett, M. J., J. A. Swanson, and S. R. Long. (1998) Multiple genetic controls on Rhizobium meliloti syrA, a regulator of exopolysaccharide abundance. Genetics 148:19-32.
Barnett, M. J. and S. R. Long. (1997) Identification and characterization of a gene on Rhizobium meliloti pSyma, syrB, that negatively affects syrM expression. Mol. Plant-Microbe Interact. 5:550-559.
Barnett, M. J., B. G. Rushing, R. F. Fisher, and S. R. Long. (1996) Transcription start sites for syrM and nodD3 flank an insertion sequence relic in Rhizobium meliloti. J. Bacteriol 178:1782-1787.
Barnett, M. J. SyrM and regulatory circuits in Rhizobium meliloti [Ph.D. Dissertation]. Stanford University, 1994.
Barnett, M. J. and S. R. Long. (1990) Nucleotide sequence of an alfalfa calmodulin cDNA. Nucleic Acids Res. 18:3395-3395.
Barnett, M. J. and S. R. Long. (1990) DNA sequence and translational product of a new nodulation-regulatory locus: SyrM has sequence similarity to NodD proteins. J. Bacteriol. 172:3695-3700.
Conferences & WorkshopsBarnett, M. J. and S. R. Long. Poster: Identification and characterization a new Sinorhizobium meliloti gene: emmD encodes a small protein involved in regulation of succinoglycan production. Manitoba, Canada. May. 20-23, 2018.
Barnett, M. J. and S. R. Long. Poster: A model system for analyzing Ca. Liberibacter asiaticus gene expression. International Research Conference on Huanglongbing. Orlando, FL. Feb. 9-13, 2015.
Barnett, M. J., A. N. Bittner, C. J. Toman, V. Oke, and S. R. Long. Poster: Dual RpoH sigma factors and transcriptional plasticity in a symbiotic bacterium. American Society for Microbiology, General Meeting. San Francisco, CA. June 16-19, 2012.
Barnett, M. J., C. Toman, and S. R. Long. Poster: Exopolysaccharide production in the symbiotic soil bacterium, Sinorhizobium meliloti: what is the role of syrA? 21st North American Symbiotic Nitrogen Fixation Conference. Columbia, MO. June 13-18, 2010.
Barnett, M. J., C. Toman, and S. R. Long. Poster: Exopolysaccharide production in the symbiotic soil bacterium, Sinorhizobium meliloti: what is the role of syrA? XIV International Congress on Molecular Plant-Microbe Interactions. Quebec City, Canada. July 19-23, 2009.
Barnett, M. J., M. Janicek, and S. R. Long. Poster: Motility and exopolysaccharide production in the symbiotic soil bacterium, Sinorhizobium meliloti: gene expression and regulatory circuits. 8th European Nitrogen Fixation Conference. Ghent, Belgium. Aug. 30-Sept. 2, 2008.
Barnett, M. J., C. Toman,and S. R. Long. Poster: Motility and exopolysaccharide production in the symbiotic soil bacterium, Sinorhizobium meliloti. XIII International Congress on Molecular Plant-Microbe Interactions. Sorrento, Italy. July 21-27, 2007.
Barnett, M. J. International Symposium on the Comparative Biology of the Alpha-Proteobacteria. Blacksburg, VA. April 26-29, 2006. Invited talk: Sinorhizobium meliloti genome workshop.
Participant: Sinorhizobium meliloti GenDB Workshop. Bielefeld University, Germany. Nov. 15-16, 2004.
Barnett, M. J. Invited talk: Analysis of Rhizobium-Medicago interactions with a Symbiosis Gene Chip. 6th European Nitrogen Fixation Conference. Toulouse, France. July 24-27, 2004.
Barnett, M. J. Invited talk: Update on sequencing the Sinorhizobium meliloti pSymA replicon. Meeting of the International Consortium to Sequence the Sinorhizobium meliloti Genome. Paris, France. April 2000.