@Article{phyton.2025.063737,
AUTHOR = {Yuxin Zhao, Zhanxiang Tan, Yuying Li, Kaiyue Zhang, Lili Guo, Xiaogai Hou},
TITLE = {Identification of PBL Gene Family in Tree Peonies and Its Function in Regulating Pollen Tube Growth},
JOURNAL = {Phyton-International Journal of Experimental Botany},
VOLUME = {94},
YEAR = {2025},
NUMBER = {4},
PAGES = {1159--1176},
URL = {http://www.techscience.com/phyton/v94n4/60814},
ISSN = {1851-5657},
ABSTRACT = {Receptor-like cytoplasmic kinases (RLCKs) play a crucial role in the physiological processes of plant growth and development and stress response. To elucidate the characteristics and functions of the PBL gene family in tree peonies, the whole genome identification of PBL family members in tree peonies was conducted using a bioinformatics approach based on the published <i>Arabidopsis thaliana</i> PBL protein sequence. A total of 51 <i>PoPBL</i> members were identified, which were distributed unevenly on five chromosomes in the tree peony. <i>PoPBL</i> proteins were localized in the nucleus, cytoplasm, chloroplasts, and mitochondria, with most members of the same clade exhibiting similar gene structures and conserved motif components. The promoter region of <i>PoPBLs</i> contained many response elements related to plant hormones and stress. The relative expression levels of <i>PoPBL1</i>, <i>PoPBL4</i>, <i>PoPBL14, PoPBL40</i> and <i>PoPBL45</i> were highly expressed in the pistil samples from the first hour after pollination, and all of them contained elements related to growth and development. At the same time, <i>PoPBL40</i> of 2044 bp was obtained, and it was found that it had a positive regulatory effect on pollen tube growth of tree peonies, which laid a foundation for further study of <i>PBL</i> gene function in tree peonies.},
DOI = {10.32604/phyton.2025.063737}
}