Genome-Wide Identification of GLK Family Genes in Phoebe bournei and Their Transcriptional Analysis Under Abiotic Stresses

Yiran Lian ¹

Peng Liang ^{2, 3}

Xinying Shi ¹

Qiumian Zheng ²

Dunjin Fan ²

Zhiyi Feng ⁴

Xiaomin Liu ⁵

Huanhuan Ma ⁵

Shi Jiang Cao ²

Weiyin Chang ^{2, 3}

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College of Life Sciences, Fujian Agriculture and Forestry University, FuZhou 350002, China |

College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China |

Laboratory of Virtual Teaching and Research on Forest Therapy Speciality of Taiwan Strait, Fujian Agriculture and Forestry University, Fuzhou 350002, China

⁴

College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China |

⁵

State Key Laboratory of Tree Genetics and Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China |

Publication type: Journal Article

Publication date: 2025-03-07

MDPI

Journal: International Journal of Molecular Sciences

scimago Q1

SJR: 1.179

CiteScore: 8.1

Impact factor: 4.9

ISSN: 16616596, 14220067

DOI: 10.3390/ijms26062387

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Abstract

GOLDEN2-LIKE (GLK) transcription factors are crucial regulators of chloroplast development and stress responses in plants. In this study, we investigated the GLK gene family in Phoebe bournei (Hemsl.) Yen C. Yang, a near-threatened species important for forestry and wood utilization in China. We identified 61 PbGLK genes which were classified into seven subfamilies. Our analyses of their phylogenetic relationships, gene structures, and chromosomal distribution revealed diverse characteristics. Expression profiling under different tissues and abiotic stresses showed that PbGLK25 and PbGLK30 were particularly responsive to drought, heat, light, and shade stresses, with significant upregulation. These findings highlight the potential role of PbGLK genes in stress adaptation and provide insights for the genetic improvement of P. bournei.