Genome-Wide Identification and Characterization of YABBY Gene Family in Juglans regia and Juglans mandshurica

The YABBY gene family is a plant transcription factor that exists in all seed plants. members have been studied extensively various plants and were to play significant roles growth development. Juglans, especially walnuts, are important economic tree species widely distributed worldwide. However, the identification related research of Juglans not reported date. In this study, we identified 19 genes from two species, namely, J. regia mandshurica. Ten JrYABBY nine JmYABBY divided into five subfamilies (YAB1/3, YAB2, INO, CRC, YAB5). Sequence analysis revealed encoded protein sequences had highly conserved C2C2 zinc-finger domains. An assumed cis-acting elements deeply involved phytohormone light responses. Further, expression pattern suggested most walnut likely peel flower development responses biotic stress. This study only suppled novel insights evolutionary basis families but also provided clues for further functional verification investigation other species.