TY  - EJOU
AU  - Zhang, Jiaji 
AU  - Yang, Yunyao 
AU  - Chen, Minmin 
AU  - Han, Xin 
AU  - Nie, Gongping 
AU  - Chen, Xiyan 
AU  - Zhou, Lin 
AU  - Yang, Liuyan 
AU  - Zhang, Yongchun 

TI  - Genome-Wide Identification of bZIP Gene Family in <i>Lilium davidii</i> var. <i>unicolor</i> and Expression Analysis during Dormancy Release and Regeneration
T2  - Phyton-International Journal of Experimental Botany

PY  - 
VL  - 
IS  - 
SN  - 1851-5657

AB  - The basic leucine zipper (bZIP) transcription factors constitute one of the largest and most functionally diverse gene families in plants, playing central roles in growth, development, and stress adaptation. However, systematic information on this family remains limited in <i>Lilium davidii</i> var. <i>unicolor</i>, an economically important ornamental and edible bulb crop with a remarkably large and complex genome. In this study, we conducted a genome-wide survey and identified 64 <i>LdbZIP</i> genes. Phylogenetic analysis with <i>Arabidopsis</i> and rice assigned the LdbZIPs to 11 of the 13 recognized subfamilies, with no member of subfamily IV or VIII detected. The encoded proteins exhibited obvious heterogeneity in physicochemical properties. Most LdbZIP proteins were predicted to be hydrophilic and structurally flexible, yet all were predicted to have nuclear localization, whereas several members also showed possible endoplasmic reticulum or cytoplasmic localization. Fifty-four segmentally duplicated pairs and one tandemly duplicated pair were identified, and all duplicated pairs had Ka/Ks ratios below 1. Promoter regions of <i>LdbZIPs</i> were contained a wide variety of <i>cis</i>-regulatory elements associated with light, phytohormone, and stress responses, suggesting broad involvement in environmental adaptation. Expression profiling uncovered significant spatial variations across plant tissues. Crucially, transcriptomic and relative expression analyses demonstrated a dynamic reprogramming of <i>LdbZIP</i> genes during dormancy release and regeneration. Together, these results provide a systematic overview of the structural features, evolutionary divergence, and expression characteristics of the <i>LdbZIP</i> gene family in <i>L. davidii</i> var. <i>unicolor</i>, thereby establishing a foundation for future functional characterization of candidate genes involved in dormancy release and asexual regeneration.
KW  - <i>Lilium davidii</i> var. <i>unicolor</i>; bZIP; gene family; dormancy release; regeneration

DO  - 10.32604/phyton.2026.086524