Samuel J. Martins, Ph.D.

  • Research Technologist
  • Bull Lab
Samuel J. Martins, Ph.D.
111 Buckhout Lab (office/lab)
105 Buckhout Lab (lab)

University Park, PA 16802
Work Phone: 814-863-5740
Fax: 814-863-7217


  1. Ph.D. Plant Pathology, Federal University of Lavras, Brazil, 2016
  2. Ph.D. Exchange period, University of Delaware, 2013-2014
  3. M.S. Plant Pathology, Federal University of Lavras, Brazil, 2012
  4. B.S. Agronomy, Federal University of Lavras, Brazil, 2010

Employment History

  • Research Technologist, The Pennsylvania State University, 2017-present
  • Professor of Plant Pathology, Federal University of Goias, Brazil, 2015-2017

Research Interests

My research interests focus on phytobacteriology and biological control of plant diseases by the use of beneficial bacteria. Currently, I work on distinguishing among closely-related bacterial plant pathogens by using multilocus sequence anaylsis (MLSA).


Martins SJ, Medeiros FHV, Lakshmanan V, Bais HP. Impact of seed exudates on growth and biofilm formation of Bacillus amyloliquefaciens ALB629 on the spermosphere of common bean. Frontier in Plant Science, 2017 (under review).

Martins, SJ, Rocha GA, Georg RC, Ulhôa CJ, Cunha MG, Rocha MR, Araújo LG, Vaz KS, Dianese EC, Oshiquiri LH, Dunlap CA. Minimizing the drought stress in soybean by plant-beneficial bacteria. Plant Physiology and Biochemistry, 2017 (under review).

Martins SJ, Medeiros FHV, Pedroso MP, Cunha MG, Rocha MR, Faria AF. Rhizobacterial volatiles in the control of anthracnose in common bean. Biocontrol, 2017 (under review).

Laborde MCF; Botelho D; Rodríguez G; Resende MLV; Queiroz M; Batista A; Cardoso P; Pascholati S, Gusmão L, Martins SJ, Medeiros FHV. Phialomyces macrosporus reduces Cercospora coffeicola survival on symptomatic coffee leaves. World Journal of Microbiology and Biotechnology, 2017 (under review).

Martins SJ, Medeiros FHV, Andrade RC, Nunez AMP, Souza B, Moino Junior A, Filgueiras CC. Dual role of milk on aphid and powdery mildew control in kale. Scientia Horticulturae, 2016.

Martins SJ, Medeiros FHV, Souza RM, Faria AF, Cancellier EL, Silveira HRO, Rezende MLV, Guilherme LRG. Common bean growth and health promoted by rhizobacteria and the contribution of magnesium to the observed responses. Applied Soil Ecology, v. 87, p. 49-55, 2015.

Martins, SJ, Soares AC, Medeiros FHV, Santos DBC, Pozza EA. Contribution of host and environmental factors to the hyperparasitism of coffee rust under field conditions. Australasian Plant Pathology, v. 44, p. 605-610, 2015.

Martins SJ, Medeiros FHV, Souza RM, Vilela LAF. Is curtobacterium wilt biocontrol temperature dependent? Acta Scientiarum. Agronomy (Online), v. 36, p. 409, 2014.

Martins SJ, Medeiros FHV, Souza RM, Rezende MLV, Ribeiro Junior PM. Biological control of bacterial wilt of common bean by plant growth-promoting rhizobacteria. Biological Control (Print), v. 66, p. 65-71, 2013.

Medeiros FHV, Martins SJ, Zucchi TD, Melo IS, Batista LR, Machado JC. Biological control of mycotoxins-producing molds. Ciência e Agrotecnologia (UFLA), v. 36, p. 483-497, 2012.