Genome-wide Identification and Analysis of GT106 Gene Family in Eucalyptus grandis

doi:10.3969/j.issn.1009-7791.2026.03.002

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Subtropical Plant Science ›› 2026, Vol. 55 ›› Issue (3): 267-281.DOI: 10.3969/j.issn.1009-7791.2026.03.002

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Genome-wide Identification and Analysis of GT106 Gene Family in Eucalyptus grandis

XIE Jin-cong, ZHENG Ning-yu, HU Zhi-chao, WU Ai-min^*

(College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, Guangdong China)

Received:2026-01-27 Accepted:2026-03-12 Online:2026-06-30 Published:2026-06-30
Contact: WU Ai-min

巨桉GT106基因家族的全基因组鉴定与分析

谢进聪，郑宁宇，胡志超，吴蔼民^*

(华南农业大学林学与风景园林学院，广东广州 510642)

通讯作者: 吴蔼民
基金资助:
广东省基础与应用基础研究基金(2024A1515011209)

Abstract

Abstract: Eucalyptus grandis is a significant fast-growing tree species. The mechanism underlying its rapid growth and its relationship with wood formation remains unclear. Glycosyltransferase GT106 family genes play a pivotal role in plant cell wall polysaccharide synthesis, yet systematic investigation into the genome-wide characteristics of GT106 genes in E. grandis remains lacking. Through genome-wide bioinformatics analysis, this study has for the first time identified 37 GT106 family members in E. grandis and comprehensively characterised their bioinformatics features. Phylogenetic analysis indicates that GT106 family genes are evolutionarily conserved among E. grandis, Arabidopsis thaliana, and Populus alba. Gene structure and conserved motif analysis showed that the EgGT106 gene contains the characteristic O-FucT plant and O-FucT like superfamily domains, with key motifs 1, 3, and 7 widely distributed. The EgGT106 promoter region is rich in light-response, hormone-response, and stress-related elements, suggesting its potential involvement in regulating E. grandis growth, development, and environmental adaptation. Furthermore, genes such as EgGT106.2, 9, and 16 were highly expressed in xylem, phloem, and leaves, whereas EgGT106.7, 11, and 23 were highly expressed in roots and stems, indicating their distinct functional differentiation. Notably, under jasmonic acid, salicylic acid, and salt stress treatments, multiple EgGT106 genes exhibited temporal expression patterns, indicating that this gene family also plays a significant role in the stress response of E. grandis. In summary, this study provides the first analysis of the characteristics of the GT106 gene family in E. grandis and the dynamics of this family under stress treatments. It establishes a theoretical foundation for further elucidating the functional roles of this family in giant eucalyptus growth and development, wood formation, and stress responses, as well as offering candidate gene resources for molecular breeding in forest trees.

Key words: Eucalyptus grandis, Glycosyltransferase, GT106, bioinformatics analysis and identification, stress response

摘要： 巨桉Eucalyptus grandis作为重要的林木速生树种，其快速生长机制与木材形成关联尚未阐明。糖基转移酶GT106家族基因在植物细胞壁多糖合成中发挥关键作用，但目前对巨桉GT106基因全基因组特征仍缺乏系统研究。本研究通过全基因组生物信息学分析，首次在巨桉中鉴定出37个GT106家族成员，并对其生物信息学特征进行全面解析。系统进化分析表明，GT106家族基因在巨桉与拟南芥Arabidopsis thaliana、银白杨Populus alba等物种在进化上功能相对保守；基因结构与保守基序分析显示，EgGT106基因含有典型的O-FucT_plant和O-FucT_like superfamily结构域，关键基序Motif 1、3、7广泛分布；EgGT106启动子区富含光响应、激素响应及逆境胁迫相关元件，可能参与巨桉的生长发育与环境适应调控。此外，EgGT106.2、9、16等基因在木质部、韧皮部及叶片中高表达，而EgGT106.7、11、23在根和茎中高表达，说明它们具有明显的功能分化。在茉莉酸、水杨酸及盐胁迫处理下，多个EgGT106基因表达呈时序性变化，表明该家族基因在巨桉抗逆响应中发挥重要作用。研究结果为深入解析GT106基因家族在巨桉生长发育、木材形成及逆境应答中的功能提供理论基础。

关键词: 巨桉, 糖基转移酶, GT106, 生信分析鉴定, 胁迫响应

CLC Number:

Q943

XIE Jin-cong, ZHENG Ning-yu, HU Zhi-chao, WU Ai-min. Genome-wide Identification and Analysis of GT106 Gene Family in Eucalyptus grandis[J]. Subtropical Plant Science, 2026, 55(3): 267-281.

谢进聪, 郑宁宇, 胡志超, 吴蔼民. 巨桉GT106基因家族的全基因组鉴定与分析[J]. 亚热带植物科学, 2026, 55(3): 267-281.

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Genome-wide Identification and Analysis of GT106 Gene Family in Eucalyptus grandis

巨桉GT106基因家族的全基因组鉴定与分析

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