Resistance of the CRISPR-Cas13a Gene-Editing System to Potato Spindle Tuber Viroid Infection in Tomato and Nicotiana benthamiana
文献类型： 外文期刊
作者： Khoo, Ying Wei 1 ; Wang, Qingsong 1 ; Liu, Shangwu 3 ; Zhan, Binhui 1 ; Xu, Tengfei 4 ; Lv, Wenxia 5 ; Liu, Guangjing 5 ; Li, Shifang 1 ; Zhang, Zhixiang 1 ;
作者机构： 1.Chinese Acad Agr Sci, State Key Lab Biol Plant Dis & Insect Pests, Inst Plant Protect, Beijing 100193, Peoples R China
2.Southwest Univ, Citrus Res Inst, Natl Citrus Engn Res Ctr, Integrat Sci Ctr Germplasm Creat Western China Cho, Chongqing 400712, Peoples R China
3.Heilongjiang Acad Agr Sci, Inst Ind Crops, Harbin 150086, Peoples R China
4.China Agr Univ, Coll Hort, Dept Fruit Sci, Beijing 100193, Peoples R China
5.Inner Mongolia Zhongjia Agr Biotechnol Co Ltd, Ulanqab 011800, Peoples R China
关键词： tomato; viroid; gene editing; Cas13a; genetic engineering; guide RNAs
期刊名称：VIRUSES-BASEL （ 影响因子：3.5； 五年影响因子：3.7 ）
ISSN：
年卷期： 2024 年 16 卷 9 期
页码：
收录情况： SCI
摘要： Gene-editing technology, specifically the CRISPR-Cas13a system, has shown promise in breeding plants resistant to RNA viruses. This system targets RNA and, theoretically, can also combat RNA-based viroids. To test this, the CRISPR-Cas13a system was introduced into tomato plants via transient expression and into Nicotiana benthamiana through transgenic methods, using CRISPR RNAs (crRNAs) targeting the conserved regions of both sense and antisense genomes of potato spindle tuber viroid (PSTVd). In tomato plants, the expression of CRISPR-Cas13a and crRNAs substantially reduced PSTVd accumulation and alleviated disease symptoms. In transgenic N. benthamiana plants, the PSTVd levels were lower as compared to wild-type plants. Several effective crRNAs targeting the PSTVd genomic RNA were also identified. These results demonstrate that the CRISPR-Cas13a system can effectively target and combat viroid RNAs, despite their compact structures.
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