Establishment of an Efficient Agrobacterium rhizogenes-Mediated Hairy Root Transformation System for Functional Analysis in Passion Fruit
文献类型： 外文期刊
作者： Pan, Jiayi 1 ; Zheng, Yiping 1 ; Wang, Tiancai 1 ; Xiong, Pengpeng 1 ; Cui, Kaibo 1 ; Zeng, Lihui 1 ; Fang, Ting 1 ;
作者机构： 1.Fujian Agr & Forestry Univ, Inst Genet & Breeding Hort Plants, Coll Hort, Fuzhou 350002, Peoples R China
2.Fujian Acad Agr Sci, Inst Biotechnol, Fuzhou 350003, Peoples R China
3.Fujian Agr & Forestry Univ, Key Lab Minist Educ Genet Breeding & Multiple Util, Fuzhou 350002, Peoples R China
关键词：
passion fruit;
期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）
ISSN： 2223-7747
年卷期： 2025 年 14 卷 15 期
页码：
收录情况： SCI
摘要： Passion fruit (Passiflora edulis Sims), belonging to the Passifloraceae family, is an economically important plant in tropical and subtropical regions. The advances in functional genomics research of passion fruit have been significantly hindered by its recalcitrance to regeneration and stable transformation. This study establishes the first efficient Agrobacterium rhizogenes-mediated hairy root transformation system for passion fruit. Utilizing the eGFP marker gene, transformation efficiencies of 11.3% were initially achieved with strains K599, MSU440, and C58C1, with K599 proving most effective. Key transformation parameters were systematically optimized to achieve the following: OD600 = 0.6, infection duration 30 min, acetosyringone concentration 100 mu M, and a dark co-cultivation period of 2 days. The system's utility was further enhanced by incorporating the red visual marker RUBY, enabling direct, instrument-free identification of transgenic roots via betaxanthin accumulation. Finally, this system was applied for functional analysis using PeMYB123, which may be involved in proanthocyanidin accumulation. Overexpression of PeMYB123 produced a higher content of proanthocyanidin in hairy roots. Additionally, the PeANR gene involved in the proanthocyanidin pathway was strongly activated in the transgenic hairy roots. This rapid and efficient visually simplified hairy root transformation system provides a powerful tool for functional gene studies in passion fruit.
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