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CRISPR/CasRx-mediated resistance to Soybean mosaic virus in soybean

The Crop Journal 2024年第4期12卷 1093-1101页

作者： Le Gao Lijun Xie Yanmin Xiao Xinge Cheng ruosi pu Ziheng Zhang Yu Liu Shaopei Gao Zilong Zhang Haoran Qu Haijian Zhi Kai Li MARA Key Laboratory of Biology and Genetics Improvement of Soybean Zhongshan Biological Breeding Laboratory(ZSBBL)National Innovation Platform for Soybean Breeding and Industry-Education IntegrationState Key Laboratory of Crop Genetics&Germplasm Enhancement and UtilizationNanjing Agricultural UniversityNanjing 210095JiangsuChina Department of Horticulture Beijing Vocational College of AgricultureBeijing 102442China College of Agronomy&Biotechnology China Agricultural UniversityBeijing 100193China College of Bioscience and Biotechnology Shenyang Agricultural UniversityShenyang 110866LiaoningChina

Soybean mosaic virus(SMV),an RNA virus,is the most common and destructive pathogenic virus in soybean *** newly developed CRISPR/Cas immune system has provided a novel strategy for improving plant resistance to viruses;hence,this study aimed to engineer SMV resistance in soybean using this ***,multiple sgRNAs were designed to target positive-and/or negative-sense strands of the SMV HC-Pro ***,the corresponding CRISPR/CasRx vectors were constructed and transformed into *** inoculation with SMV,39.02%,35.77%,and 18.70%of T_(1)plants were confirmed to be highly resistant(HR),resistant(R),and mildly resistant(MR)to SMV,respectively,whereas only 6.50%were identified as susceptible(S).Additionally,qRT-PCR and DAS-ELISA showed that,both at 15 and 30 d post-inoculation(dpi),SMV accumulation significantly decreased or was even undetectable in HR and R plants,followed by MR and S ***,the expression level of the CasRx gene varied in almost all T_(1)plants with different resistance level,both at 15 and 30 ***,when SMV resistance was evaluated in the T_(2)generation,the results were similar to those recorded for the T_(1)*** findings provide new insights into the application of the CRISPR/CasRx system for soybean improvement and offer a promising alternative strategy for breeding for resistance to biotic stress that will contribute to the development of SMV-immune soybean germplasm to accelerate progress towards greater soybean crop productivity.

关键词： Soybean RNA virus Soybean mosaic virus Resistance CRISPR/CasRx

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CRISPR/CasRx-mediated resistance to Soybean mosaic virus in soybean

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The Crop Journal 2024年第4期 1093页

作者： Le Gao Lijun Xie Yanmin Xiao Xinge Cheng ruosi pu Ziheng Zhang Yu Liu Shaopei Gao Zilong Zhang Haoran Qu Haijian Zhi Kai Li

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