Justin Merritt

Associate Professor

  • 2033 Citations
  • 24 h-Index
20012020
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Research Output 2001 2020

  • 2033 Citations
  • 24 h-Index
  • 67 Article
  • 1 Chapter
2001
4 Citations (Scopus)

Bacterial biofilm and dentistry.

Merritt, J., Anderson, M. H., Park, N. H. & Shi, W., 2001, In : Journal of the California Dental Association. 29, 5, p. 355-360 6 p.

Research output: Contribution to journalArticle

Biofilms
Dentistry
Tooth
Bacteria
2003
193 Citations (Scopus)

Mutation of luxS affects biofilm formation in Streptococcus mutans

Merritt, J., Qi, F., Goodman, S. D., Anderson, M. H. & Shi, W., Apr 1 2003, In : Infection and Immunity. 71, 4, p. 1972-1979 8 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Quorum Sensing
Biofilms
Mutation
Acyl-Butyrolactones
2004
79 Citations (Scopus)
Streptococcus mutans
Gene Silencing
Biofilms
Mental Competency
Sucrose
29 Citations (Scopus)
Streptococcus mutans
Glucuronidase
Biofilms
Gene Expression
Proteins
2005
41 Citations (Scopus)

A unique nine-gene comY operon in Streptococcus mutans

Merritt, J., Qi, F. & Shi, W., Jan 2005, In : Microbiology. 151, 1, p. 157-166 10 p.

Research output: Contribution to journalArticle

Contagious Ecthyma
Streptococcus mutans
Operon
Mental Competency
Genes
244 Citations (Scopus)

Competition and coexistence between Streptococcus mutans and Streptococcus sanguinis in the dental biofilm

Kreth, J., Merritt, J., Shi, W. & Qi, F., Nov 2005, In : Journal of Bacteriology. 187, 21, p. 7193-7203 11 p.

Research output: Contribution to journalArticle

Bacteriocins
Streptococcus mutans
Biofilms
Streptococcus
Tooth
135 Citations (Scopus)
Bacteriocins
Streptococcus mutans
Mental Competency
DNA
Plasmids
23 Citations (Scopus)

Identification of genes associated with mutacin I production in Streptococcus mutans using random insertional mutagenesis

Tsang, P., Merritt, J., Nguyen, T., Shi, W. & Qi, F., Dec 2005, In : Microbiology. 151, 12, p. 3947-3955 9 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Insertional Mutagenesis
Clone Cells
Genes
Bacteriocins
69 Citations (Scopus)

LuxS controls bacteriocin production in Streptococcus mutans through a novel regulatory component

Merritt, J., Kreth, J., Shi, W. & Qi, F., Aug 2005, In : Molecular Microbiology. 57, 4, p. 960-969 10 p.

Research output: Contribution to journalArticle

Bacteriocins
Streptococcus mutans
Cell Count
mutacin I
Gene Expression
22 Citations (Scopus)
Streptococcus mutans
Biofilms
Preclinical Drug Evaluations
Luciferases
Aptitude
2006
53 Citations (Scopus)

Cell density- and ComE-dependent expression of a group of mutacin and mutacin-like genes in Streptococcus mutans

Kreth, J., Merritt, J., Zhu, L., Shi, W. & Qi, F., Dec 2006, In : FEMS Microbiology Letters. 265, 1, p. 11-17 7 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Cell Count
Mental Competency
Genes
Peptides
17 Citations (Scopus)

IrvA-dependent and IrvA-independent pathways for mutacin gene regulation in Streptococcus mutans

Tsang, P., Merritt, J., Shi, W. & Qi, F., Aug 2006, In : FEMS Microbiology Letters. 261, 2, p. 231-234 4 p.

Research output: Contribution to journalArticle

Bacteriocins
Streptococcus mutans
Dental Caries
Biofilms
Genes
23 Citations (Scopus)

Milk helps build strong teeth and promotes oral health.

Merritt, J., Qi, F. & Shi, W., May 2006, In : Journal of the California Dental Association. 34, 5, p. 361-366 6 p.

Research output: Contribution to journalArticle

Oral Health
Tooth
Milk
Tooth Remineralization
Oral Hygiene
2007
17 Citations (Scopus)

Construction of a counterselection-based in-frame deletion system for genetic studies of Streptococcus mutans

Merritt, J., Tsang, P., Zheng, L., Shi, W. & Qi, F., Apr 2007, In : Oral Microbiology and Immunology. 22, 2, p. 95-102 8 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Galactose
Plasmids
Galactosidases
Lac Operon
22 Citations (Scopus)

Genetic characterization of the hdrRM operon: A novel high-cell-density-responsive regulator in Streptococcus mutans

Merritt, J., Zheng, L., Shi, W. & Qi, F., Aug 2007, In : Microbiology. 153, 8, p. 2765-2773 9 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Operon
Cell Count
Bacteriocins
Biofilms
73 Citations (Scopus)
Streptococcus mutans
Streptococcus
Lactic Acid
lactate 2-monooxygenase
Growth
58 Citations (Scopus)

The response regulator ComE in Streptococcus mutans functions both as a transcription activator of mutacin production and repressor of CSP biosynthesis

Kreth, J., Hung, D. C. I., Merritt, J., Perry, J., Zhu, L., Goodman, S. D., Cvitkovitch, D. G., Shi, W. & Qi, F., Jun 2007, In : Microbiology. 153, 6, p. 1799-1807 9 p.

Research output: Contribution to journalArticle

Peptide Biosynthesis
Streptococcus mutans
Mental Competency
Bacteriocins
Nucleic Acid Repetitive Sequences
2008
20 Citations (Scopus)

Characterization of irvR, a novel regulator of the irvA-dependent pathway required for genetic competence and dextran-dependent aggregation in Streptococcus mutans

Niu, G., Okinaga, T., Zhu, L., Banas, J., Qi, F. & Merritt, J., Nov 2008, In : Journal of Bacteriology. 190, 21, p. 7268-7274 7 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Dextrans
Mental Competency
Mutation
Genetic Vectors
64 Citations (Scopus)

Immunological evaluation of Lactobacillus casei Zhang: A newly isolated strain from koumiss in Inner Mongolia, China

Ya, T., Zhang, Q., Chu, F., Merritt, J., Bilige, M., Sun, T., Du, R. & Zhang, H., Nov 19 2008, In : BMC Immunology. 9, 68.

Research output: Contribution to journalArticle

Lactobacillus casei
Lactobacillus
China
Probiotics
Hot Temperature
39 Citations (Scopus)

Role of sucrose in the fitness of Streptococcus mutans

Kreth, J., Zhu, L., Merritt, J., Shi, W. & Qi, F., Jun 2008, In : Oral Microbiology and Immunology. 23, 3, p. 213-219 7 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Sucrose
Dental Caries
Biofilms
Carbohydrates
24 Citations (Scopus)

The cia operon of Streptococcus mutans encodes a unique component required for calcium-mediated autoregulation

He, X., Wu, C., Yarbrough, D., Sim, L., Niu, G., Merritt, J., Shi, W. & Qi, F., Oct 2008, In : Molecular Microbiology. 70, 1, p. 112-126 15 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Operon
Homeostasis
Calcium
Phenotype
2009
23 Citations (Scopus)

Autoaggregation response of Fusobacterium nucleatum

Merritt, J., Niu, G., Okinaga, T. & Qi, F., Dec 2009, In : Applied and Environmental Microbiology. 75, 24, p. 7725-7733 9 p.

Research output: Contribution to journalArticle

Fusobacterium nucleatum
inhibitor
gene
mouth
saliva
92 Citations (Scopus)

Bacterial and host interactions of oral streptococci

Kreth, J., Merritt, J. & Qi, F., Aug 1 2009, In : DNA and Cell Biology. 28, 8, p. 397-403 7 p.

Research output: Contribution to journalArticle

Biofilms
Streptococcus
Mouth Diseases
Ecology
Immune System
16 Citations (Scopus)

Genes involved in the repression of mutacin I production in Streptococcus mutans

Nguyen, T., Zhang, Z., Huang, I. H., Wu, C., Merritt, J., Shi, W. & Qi, F., Jan 1 2009, In : Microbiology. 155, 2, p. 551-556 6 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Genes
Clone Cells
Bacteriocins
Mutation
14 Citations (Scopus)

Role of the Streptococcus mutans irvA gene in GbpC-independent, dextran-dependent aggregation and biofilm formation

Zhu, M., Ajdić, D., Liu, Y., Lynch, D., Merritt, J. & Banas, J. A., Nov 2009, In : Applied and Environmental Microbiology. 75, 22, p. 7037-7043 7 p.

Research output: Contribution to journalArticle

Streptococcus mutans
dextran
Biofilms
Dextrans
biofilm
2010
54 Citations (Scopus)

Community and gene composition of a human dental plaque microbiota obtained by metagenomic sequencing

Xie, G., Chain, P. S. G., Lo, C. C., Liu, K. L., Gans, J., Merritt, J. & Qi, F., Dec 2010, In : Molecular Oral Microbiology. 25, 6, p. 391-405 15 p.

Research output: Contribution to journalArticle

Metagenomics
Dental Plaque
Microbiota
Genes
Mouth Diseases
34 Citations (Scopus)

Examination of the hdrRM regulon yields insight into the competence system of Streptococcus mutans

Okinaga, T., Xie, Z., Niu, G., Qi, F. & Merritt, J., 2010, In : Molecular Oral Microbiology. 25, 3, p. 165-177 13 p.

Research output: Contribution to journalArticle

Regulon
Streptococcus mutans
Mental Competency
Bacteriocins
Genes
37 Citations (Scopus)
Peptide Synthases
Polyketide Synthases
genomic islands
polyketide synthases
Streptococcus mutans
30 Citations (Scopus)

Identification of a novel bacteriocin regulatory system in Streptococcus mutans

Xie, Z., Okinaga, T., Niu, G., Qi, F. & Merritt, J., Dec 2010, In : Molecular Microbiology. 78, 6, p. 1431-1447 17 p.

Research output: Contribution to journalArticle

Bacteriocins
Streptococcus mutans
Operon
Membrane Proteins
Nucleic Acid Repetitive Sequences
52 Citations (Scopus)

Mutanobactin A from the human oral pathogen Streptococcus mutans is a cross-kingdom regulator of the yeast-mycelium transition

Joyner, P. M., Liu, J., Zhang, Z., Merritt, J., Qi, F. & Cichewicz, R. H., Dec 21 2010, In : Organic and Biomolecular Chemistry. 8, 24, p. 5486-5489 4 p.

Research output: Contribution to journalArticle

streptococcus
Streptococcus mutans
pathogens
metabolites
Mycelium
14 Citations (Scopus)

Regulation of ciaXRH operon expression and identification of the CiaR regulon in Streptococcus mutans

Wu, C., Ayala, E. A., Downey, J. S., Merritt, J., Goodman, S. D. & Qi, F., Sep 2010, In : Journal of Bacteriology. 192, 18, p. 4669-4679 11 p.

Research output: Contribution to journalArticle

Regulon
Streptococcus mutans
Operon
Phenotype
Genes
40 Citations (Scopus)

The hdrRM operon of Streptococcus mutans encodes a novel regulatory system for coordinated competence development and bacteriocin production

Okinaga, T., Niu, G., Xie, Z., Qi, F. & Merritt, J., Apr 2010, In : Journal of Bacteriology. 192, 7, p. 1844-1852 9 p.

Research output: Contribution to journalArticle

Bacteriocins
Streptococcus mutans
Operon
Mental Competency
Regulator Genes
5 Citations (Scopus)

The Streptococcus mutans IrvR repressor is a CI-like regulator that functions through autocleavage and Clp-dependent proteolysis

Niu, G., Okinaga, T., Qi, F. & Merritt, J., Mar 2010, In : Journal of Bacteriology. 192, 6, p. 1586-1595 10 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Proteolysis
Lysogeny
Amino Acids
Aptitude
2011
54 Citations (Scopus)

Cloning-independent and counterselectable markerless mutagenesis system in streptococcus mutans

Xie, Z., Okinaga, T., Qi, F., Zhang, Z. & Merritt, J., Nov 2011, In : Applied and Environmental Microbiology. 77, 22, p. 8025-8033 9 p.

Research output: Contribution to journalArticle

Streptococcus mutans
mutagenesis
Mutagenesis
Organism Cloning
molecular cloning
30 Citations (Scopus)

Differential response of Streptococcus mutans towards friend and foe in mixed-species cultures

Liu, J., Wu, C., Huang, I. H., Merritt, J. & Qi, F., Sep 2011, In : Microbiology. 157, 9, p. 2433-2444 12 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Streptococcus gordonii
Down-Regulation
Growth
Veillonella
5 Citations (Scopus)

Genetic transformation of Veillonella parvula

Liu, J., Merritt, J. & Qi, F., Sep 2011, In : FEMS Microbiology Letters. 322, 2, p. 138-144 7 p.

Research output: Contribution to journalArticle

Veillonella
Genetic Transformation
Mouth
Mutation
Electroporation
27 Citations (Scopus)

Hydrogen peroxide-dependent DNA release and transfer of antibiotic resistance genes in Streptococcus gordonii

Itzek, A., Zheng, L., Chen, Z., Merritt, J. & Kreth, J., Dec 2011, In : Journal of Bacteriology. 193, 24, p. 6912-6922 11 p.

Research output: Contribution to journalArticle

Streptococcus gordonii
Microbial Drug Resistance
Hydrogen Peroxide
DNA
Genes
2012
8 Citations (Scopus)

Establishment of a tractable genetic transformation system in Veillonella spp.

Liu, J., Xie, Z., Merritt, J. & Qi, F., May 2012, In : Applied and Environmental Microbiology. 78, 9, p. 3488-3491 4 p.

Research output: Contribution to journalArticle

Veillonella
Genetic Transformation
genetic transformation
genetic vectors
Genetic Vectors
73 Citations (Scopus)

The mutacins of Streptococcus mutans: Regulation and ecology

Merritt, J. & Qi, F., Apr 2012, In : Molecular Oral Microbiology. 27, 2, p. 57-69 13 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Ecology
Bacteriocins
Biofilms
Tooth
2013
9 Citations (Scopus)

Cloning-independent plasmid construction for genetic studies in streptococci

Xie, Z., Qi, F. & Merritt, J., 2013, In : Journal of Microbiological Methods. 94, 2, p. 77-82 6 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Streptococcus
Genetic Vectors
Organism Cloning
Plasmids
12 Citations (Scopus)
antitoxins
Antitoxins
Streptococcus mutans
Xylose
gene induction
2014
9 Citations (Scopus)

Ubiquitous sialometabolism present among oral fusobacteria

Yoneda, S., Loeser, B., Feng, J., Dmytryk, J., Qi, F. & Merritt, J., Jun 4 2014, In : PLoS One. 9, 6, e99263.

Research output: Contribution to journalArticle

Fusobacteria
Fusobacterium nucleatum
sialic acids
N-Acetylneuraminic Acid
mouth
2015
14 Citations (Scopus)
Veillonella
Porphyromonas gingivalis
Cheek
Hemagglutinins
Streptococcus
1 Citation (Scopus)

RNA regulators of host immunity and pathogen adaptive responses in the oral cavity

Kreth, J., Liu, N., Chen, Z. & Merritt, J., Jul 1 2015, In : Microbes and Infection. 17, 7, p. 493-504 12 p.

Research output: Contribution to journalArticle

Adaptive Immunity
Mouth
RNA
Explosions
5 Citations (Scopus)

RNases J1 and J2 are critical pleiotropic regulators in Streptococcus mutans

Chen, X., Liu, N., Khajotia, S., Qi, F. & Merritt, J., Apr 1 2015, In : Microbiology (Reading, England). 161, p. 797-806 10 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Ribonucleases
RNA Stability
Bacillus subtilis
Bacteria
22 Citations (Scopus)

The Streptococcus mutans irvA Gene Encodes a trans-Acting Riboregulatory mRNA

Liu, N., Niu, G., Xie, Z., Chen, Z., Itzek, A., Kreth, J., Gillaspy, A., Zeng, L., Burne, R., Qi, F. & Merritt, J., Jan 8 2015, In : Molecular Cell. 57, 1, p. 179-190 12 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Messenger RNA
Genes
5' Untranslated Regions
RNA Stability
2016
1 Citation (Scopus)

Effect of salivary agglutination on oral streptococcal clearance by human polymorphonuclear neutrophil granulocytes

Itzek, A., Chen, Z., Merritt, J. & Kreth, J., 2016, (Accepted/In press) In : Molecular Oral Microbiology.

Research output: Contribution to journalArticle

Agglutination
Phagocytosis
Granulocytes
Neutrophils
Streptococcus gordonii
11 Citations (Scopus)
bioluminescence
Biofilms
Luciferases
biofilm
mouth
6 Citations (Scopus)

Real-time assessment of Streptococcus mutans biofilm metabolism on resin composite

Esteban Florez, F. L., Hiers, R. D., Smart, K., Kreth, J., Qi, F., Merritt, J. & Khajotia, S. S., Oct 1 2016, In : Dental Materials. 32, 10, p. 1263-1269 7 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Composite Resins
Biofilms
Metabolism
Bioluminescence
22 Citations (Scopus)

The road less traveled - defining molecular commensalism with Streptococcus sanguinis

Kreth, J., Giacaman, R. A., Raghavan, R. & Merritt, J., 2016, (Accepted/In press) In : Molecular Oral Microbiology.

Research output: Contribution to journalArticle

Symbiosis
Oral Health
Streptococcus
Mouth Diseases
Stomatognathic Diseases