Any process that stops, prevents, or reduces the frequency, rate or extent of microtubule depolymerization; prevention of depolymerization of a microtubule can result from binding by 'capping' at the plus end (e.g. by interaction with another cellular protein of structure) or by exposing microtubules to a stabilizing drug such as taxol. (Gene Ontology, GO_0007026)
21 genes participating in the negative regulation of microtubule depolymerization biological process from the curated GO Biological Process Annotations 2023 dataset.