Alam Garcia-Heredia

Molecular and Cellular Biology Graduate Program

University of Massachusetts Amherst                                                           

Amherst, MA 01003



University of Massachusetts, Amherst. PhD candidate in the Molecular and Cell Biology program, 2015-present. Advisor: Dr. M. Sloan Siegrist.

Universidad Autónoma de Nuevo León (UANL). Químico Bacteriólogo Parasitólogo (B. Sc. “Chemist Bacteriologist Parasitologist”), 2015. Advisors: Drs. Norma Heredia and Santos García.


UANL Research Award in Natural Sciences, 2017.

Honors Fellowship by Universidad Autónoma de Nuevo Leon.

Top Student, 2014 UANL class.

Best presentation award in the International Meeting for Food Safety (Inocuidad Alimentaria), 2013.

Second best poster presentation at the International Meeting for Food Safety (Inocuidad Alimentaria), 2011.  


Scholarship for academic excellence in Bachelor´s studies by Universidad Autónoma de Nuevo Leon, $3, 150 USD. 2010-2014.

Scholarship for academic excellence to study German by Universidad Autónoma de Nuevo León, $1, 400 USD. 2009-2010.


5.    Corzo-Ariyama, H. A., García-Heredia, A., Heredia, N., García, S., León, J., Jaykus, L., and Solís-Soto, L. (2019). Phylogroups, pathotypes, biofilm formation and antimicrobial resistance of Escherichia coli isolates in farms and packing facilities of tomato, jalapeño pepper and cantaloupe from Northern Mexico. International journal of food microbiology, 290, 96-104.

4.   García-Heredia, A.*, Pohane, A. A.*, Melzer, E. S., Carr, C. R., Fiolek, T. J., Rundell, S. R., Lim, H. C., Wagner, J. C., Morita, Y. S., Swarts, M. B and Siegrist, M. S. (2018). Peptidoglycan precursor synthesis along the sidewall of pole-growing mycobacteria. Elife, 7, e37243.

•     Insight article in “Tuberculosis: Breaking down walls,” eLife 2018

•     Spotlight article in “Building Walls: Work that Never Ends,” Trends in Microbiology 2019

•     Finalist for Mahoney Life Sciences Prize (winner to be announced in April 2019)

3.  Puffal, J., García-Heredia, A., Rahlwes, K. C., Siegrist, M. S. and Morita, Y. S. (2018). Spatial control of cell envelope biosynthesis in mycobacteria. Pathogens and disease, 76(4), fty027.

2.  García-Heredia, A., García, S.,  Merino-Mascorro, J. A., Feng, P. and Heredia, N. (2016). Natural plant products inhibit growth and alter the swarming motility, biofilm formation, and expression of virulence genes in enteroaggregative and enterohemorrhagic Escherichia coli. Food Microbiology, 59: 124-132.

•     Winner of the UANL Research Award in Natural Sciences, 2017.

•     Featured in the Ciencia UANL magazine, Jan-Feb 2018.

1.     García-Heredia, A., Orue, N., Heredia, N. and García, S. (2013). Efficacy of citrus-based disinfectants to inhibit growth, swarming, and biofilm formation of Salmonella and decontaminate parsley. Journal of Food, Agriculture & Environment, 11(2), 1295-1299.


1.     García-Heredia, A., Puffal, J., Judd, J., Gray, T. A., Morita, Y. S. and Siegrist, M. S. (2019). Membrane compartmentalization of mycobacterial peptidoglycan synthesis. bioRxiv, 544338.


2.     García-Heredia A., Dávila-Aviña, J. E., Zoellner, C., Garcia-Amezquita, L. E., Heredia, N., Garcia, S. (2018). Essential oils and plant extracts as natural antimicrobial agents. In: Emerging Postharvest Treatment of Fruits and Vegetables. (eds) K. Barman, S. Sharma, M.W. Siddiqui. AAP-CRC Press. p317-352.

1.     García, S., Heredia, N., Solís-Soto, L., Dávila-Aviña, J. and García-Heredia, A. (2016). Fisiología de Microorganismos, Manual de Laboratorio. Segunda Edición. Editorial Trillas. ISBN 978-607-17-2696-4.

•     Best seller laboratory manual for training in elemental microbial physiology in Mexico


During PhD:

Molecular and Cellular Biology (MCB) Colloquium, September 2016, February 2019

Harvard School of Public Health, September 2018

Molecular and Cellular Biology (MCB) retreat, October 2017

Chemistry-Biology Interface (CBI) Chalk Talk, February 2017, November 2018

Prior to UMass:

XXXI Scientific-Academic week, culture and Sport: Advances and Perspectives in Biotechnology. (2013). Use of citrus-based disinfectants to inhibit Salmonella. Universidad Autónoma de Coahuila in Torreon, Mexico.

García-Heredia A., Orue N., Heredia N., Garcia S. (2013). Efficacy of Commercial Citrus-based Disinfectants to Inhibit Growth, Swarming, and Biofilm Formation of Salmonella and Decontaminate Parsley. Annual Meeting of Inocuidad Alimentaria in Monterrey, Mexico.


Microbio 255 (Introduction to Medical Microbiology, 4 credits): TA in a laboratory course for 24 undergraduates, Spring 2017.

Microbio 265 (Introduction to Microbiology Laboratory, 2 credits): TA in a laboratory course for 24 undergraduates, Spring 2017.

Microbio 565 (Laboratory in Molecular Genetics, 4 credits): TA in a laboratory course for 24 undergraduates, Fall 2016.

Biology 151 (Introductory Biology I, 2 credits): TA in a lecturing course for 200 undergraduates, led discussion sessions, Fall 2015-Spring 2016.


Pioneer Valley Microbiology Symposium 2019 at UMass Amherst, organizer

Rapid Diagnostic Methods in Microbiology 2014 workshop at UANL, volunteer staff

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