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Jia, Hongge; Wang, Nian
Plant cell reports, 12/2014, Letnik: 33, Številka: 12Journal Article
KEY MESSAGE : Xanthomonas citri subsp. citri pretreatment before agroinfiltration could significantly promote transient expression in citrus leaves which were previously recalcitrant to agroinfiltration. Transient expression via agroinfiltration is widely used in biotechnology but remains problematic in many economically important plants. Xanthomonas citri subsp. citri (Xcc)-facilitated agroinfiltration was employed to promote transient protein expression in Valencia sweet orange leaves, which are recalcitrant to agroinfiltration. However, it is unclear whether Xcc-facilitated agroinfiltration has broad application, i.e., whether Xcc-facilitated agroinfiltration could be used on other citrus varieties. In addition, we intended to investigate whether Xcc-facilitated agroinfiltration could be used to hasten transgene function assays, e.g., Cre/lox system and Cas9/sgRNA system. In this report, Xcc-facilitated agroinfiltration was further exploited to enhance β-glucuronidase (GUS) expression in five citrus varieties. Xcc-facilitated agroinfiltration also significantly increased GFP expression in six citrus varieties tested. Both GUS and GFP assays indicated that Xcc-facilitated agroinfiltration had the best performance in grapefruit. After Xcc-facilitated agroinfiltration was carried out in grapefruit, protoplast analysis of the transformed cells indicated that there were more than 20 % leaf cells expressing GFP. In grapefruit, usefulness of Xcc-facilitated agroinfiltration was assayed in three case studies: (1) fast functional analysis of Cre/lox system, (2) the heat shock regulation of HSP70B promoter derived from Arabidopsis, and (3) Cas9/sgRNA-mediated genome modification.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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