Banana production in Panama that United Brands would expand its production in Panama because bananas could be produced more cheaply in Costa Rica and Ecuador. The history of banana production in Panama virtually coincides with that of United Brands, which has been in Panama since 1899. The company built railroads, port facilities, and storage areas for the processing and export of bananas. In the 1930s, a disease seriously curtailed banana production. In the 1950s disease resistant plants were developed, and production increased rapidly. In the early 1970s, a "banana war" erupted when banana-producing countries disagreed among themselves and with United Brands about an export
Plant disease resistance include the Ring and U-box single subunit, HECT, and CRLs. Plant signaling pathways including immune responses are controlled by several feedback pathways, which often include negative feedback; and they can be regulated by De-ubiquitination enzymes, degradation of transcription factors and the degradation of negative regulators of transcription. Plant breeders emphasize selection and development of disease-resistant plant lines. Plant diseases can also be partially controlled by use of pesticides and by cultivation practices such as crop rotation, tillage, planting density, disease-free seeds and cleaning of equipment, but plant varieties with inherent (genetically determined) disease resistance are generally preferred. Breeding for disease