[2][3][4] Martínez-Romero studies the mutualistic symbioses of bacteria with Mexico's plants and animals using metagenomics and functional genomics approaches.

[6] Martínez-Romero studied Biomedical Research at the National Autonomous University of Mexico (UNAM) to obtain her bachelor's, master's, and Ph.D. degree.

[7] She is an expert in ecology and microbial diversity, she has described several species of Rhizobium, one of the bacterial genera known as nitrogen fixers and symbionts of plants.

[9] Martínez-Romero carried out the first molecular characterizations of the rhizobia species that form nitrogen-fixing nodules in beans, which is the legume with the highest human consumption in the world.

She believe that nitrogen fixation is key to the development of sustainable agriculture, and has explored bacteria from nitrogen-fixing corn trees and in 2022 from animals such as the Tamaulipas tortoise, endangered rabbits, and various insects native to Mexico.

In 2020, she received the international award from L'oreal UNESCO for her trajectory in improving crop yields by reducing the use of chemical fertilizers through the use of environmentally friendly bacteria.