The transcription factors TERF1 gene was transferred into 'Succari' sweet orange [Citrus sinensis (L.) Osbeck] via Agrobacterium infection and 7 transgenic clones were obtained. Three transgenic clones were further tested for tolerance to water deficiency, low temperature and their resistance to citrus canker disease (Xanthomonas axonopodis pv. citri). Under 10% of soil relative water content (SRWC), transgenic clones showed stronger tolerance than the wild type, with normal growing, leas leaf chlorophyll content decrease, higher Proline (Pro) accumulation and activity of the protective enzyme...