The disputed identity of Pseudomonas putida KT2440: when taxonomists rename your favorite microbe

Pseudomonas putida KT2440 has long served as a reference strain in environmental microbiology, biotechnology, and synthetic biology. Its recent taxonomic reclassification as P. alloputida, however, exemplifies the tensions generated by top-down renaming decisions that overlook long-standing community practice. Although phylogenetic analyses suggest that KT2440 differs from the type strain of P. putida, the new name disrupts decades of accumulated knowledge, continuity, and shared identity built around the original designation. We argue that ever-changing taxonomic orthodoxy should not override practical utility, historical coherence, and sense of community. Given the strain's global relevance and the insignificant acceptance of the proposed new name, we advocate for retaining the traditional species name or, if necessary, adopting an alternative solution developed through broad consultation. The case of strain KT2440 highlights the need for common sense and community involvement in microbial nomenclature, especially for iconic species and strains whose names have been part of scientific communication and practice.