CsHB1, a HD-Zip II transcription factor, positively promotes somatic embryogenesis in Citrus
In this study, a citrus HD-ZIP II transcription factor CsHB1 was identified. Functional characterization showed that overexpression of CsHB1 significantly enhance the SE capability of citrus unshiu 'guoqing No 1' through reorganization the cellular process and developmental pathways. Moreover, a large number genes that are differentially expressed in overexpression CsHB1 lines versus wild-type by RNA-seq, the results showed that CsHB1 could control a large regulatory transcription factors and modulate the chlorophyll metabolic level that might involve in the citrus somatic embryogenesis process.