生物技术通报 ›› 2025, Vol. 41 ›› Issue (5): 218-230.doi: 10.13560/j.cnki.biotech.bull.1985.2024-0880

• 研究报告 • 上一篇    

山金柑GATA基因家族全基因组鉴定及在果实发育中的表达分析

罗嗣芳(), 张祖铭, 谢丽芳, 郭紫晶, 陈兆星, 杨月华, 严翔(), 张洪铭()   

  1. 1.赣州市柑桔科学研究所,赣州 341000
    2.江西省柑橘种质资源圃,赣州 341000
  • 收稿日期:2024-09-10 出版日期:2025-05-26 发布日期:2025-06-05
  • 通讯作者: 张洪铭,男,高级农艺师,研究方向 :柑橘栽培与育种;E-mail: 472982486@qq.com
    严翔,男,正高级农艺师,研究方向 :柑橘栽培与育种;E-mail: gnasgjs@163.com
  • 作者简介:罗嗣芳,男,农艺师,研究方向 :柑橘种质资源收集与利用;E-mail: sifang.luo@outlook.com
  • 基金资助:
    国家现代农业产业技术体系(CARS-26);赣州市重点研发计划重点项目-现代农业产业(2022XM061209);赣州市重点研发计划一般项目(赣市科发[2024]33号)

Genome-wide Identification of GATA Gene Family of Jindou Kumquat (Fortunella hindsii) and Their Expression Analysis in Fruit Development

LUO Si-fang(), ZHANG Zu-ming, XIE Li-fang, GUO Zi-jing, CHEN Zhao-xing, YANG Yue-hua, YAN Xiang(), ZHANG Hong-ming()   

  1. 1.Institute of Citrus Science Research of Ganzhou, Ganzhou 341000
    2.Jiangxi Province Citrus Germplasm Resources Nursery, Ganzhou 341000
  • Received:2024-09-10 Published:2025-05-26 Online:2025-06-05

摘要:

目的 探究GATA转录因子基因家族在山金柑果实发育中的调控作用。 方法 采用生物信息学方法,对其山金柑GATA转录因子基因家族进行全基因组鉴定,并结合转录组数据和RT-qPCR,对其理化性质、基因结构、系统发育树和表达模式进行分析。 结果 在山金柑中共鉴定到26个FhGATAs,不均匀分布在9条染色体上;理化性质分析表明,该家族蛋白都位于细胞核中,分子量在18 019.89-60 342.13 Da范围,属于亲水性蛋白,pI介于4.62-10.33;与拟南芥同源基因进行聚类分析,FhGATA基因家族可分为4个亚家族,同一个亚家族的基序组成和分布模式相似,其中Subfamily Ⅲ亚家族的一些基因在进化过程中缺失;共线性分析表明,山金柑中存在7个共线FhGATAs基因,拟南芥中有24个AtGATAs基因与FhGATAs基因同源,甜橙中有33个CsGATAs基因与FhGATAs基因同源;FhGATA基因的转录调控机制包含光响应和光的反应性元件,以及各种激素反应、胁迫反应和生长发育相关元件;组织表达分析显示,FhGATA基因家族的4个亚家族在根、茎、叶、花、果实和种子中表现不同程度的特异性表达,其中FhGATA24FhGATA22FhGATA26FhGATA18FhGATA12FhGATA5在果实中高表达;进一步RT-qPCR分析表明,FhGATA基因与山金柑的单果重和横纵径密切相关,其中FhGATA22FhGATA18在大果和小果山金柑的果实发育全过程均存在显著差异。 结论 山金柑含有26个FhGATAs基因,其中FhGATA22FhGATA18可能是介导山金柑果实大小的调控因子。

关键词: 山金柑, GATA, 转录因子, 基因家族, 果实发育, 表达分析

Abstract:

Objective To explore the regulation of GATA transcription factor gene family in the development of Jindou Kumquat (Fortunella hindsii). Method Bioinformatics was used to identify its GATA transcription factor gene family, and analyze its physicochemical properties, gene structure, phylogenetic tree and expression patterns via combining transcriptome data with RT-qPCR. Result A total of 26 FhGATAs transcription factors were identified in Jindou Kumquat, unevenly distributed on the nine chromosomes. Analysis of the physicochemical properties showed that, this family of proteins were all located in the nucleus, molecular weight in the range from 18 019.89 to 60 342.13 Da, belonging to the hydrophilic proteins, and the pI were 4.62 to 10.33. Cluster analysis with orthologous genes in Arabidopsis thaliana, FhGATA gene family can be divided into four subfamilies, the motif composition and distribution patterns were similar in the same subfamily, and some genes in the Subfamily Ⅲ were missing during evolution. Collinearity analysis showed that, 7 collinear FhGATAs genes in Jindou Kumquat, 24 AtGATAs gene pairs were homologous to the FhGATA gene in A. thaliana, 33 CsGATAs gene were homologous to FhGATA gene in Citrus sinensis. The mechanism of transcriptional regulation of FhGATA genes contained reactive elements that were light-responsive and light, and various hormone responses, stress responses, and growth and development-related. Tissue expression analysis revealed that, the four subfamilies of the FhGATAs gene family showed varying degrees of specific expression in the root, stem, leaf, flower, fruit and seed; moreover, FhGATA24, FhGATA22, FhGATA26, FhGATA18, FhGATA12 and FhGATA5 were highly expressed in the fruit. Further qRT-PCR analysis indicated that, the FhGATA gene was closely related to the single fruit weight, horizontal diameter and vertical diameter of Jindou Kumquat, among them, FhGATA22 and FhGATA18 showed significant differences in the whole fruit development of Jindou kumquat. Conclusion The Jindou kumquat contains 26 FhGATAs genes, of which FhGATA22 and FhGATA18 may be regulators mediating the fruit size.

Key words: Fortunella hindsii, GATA, transcription factor, gene family, fruit development, expression analysis