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벼의 CRISPR/Cas9 기반 유전자 교정을 통한 내병성 및 내재해성 증진 연구 동향
김유림(Yurim Kim),최시은(Sieun Choi),윤인선(In Sun Yoon),김송림(Song Lim Kim),모영준(Youngjun Mo) 한국육종학회 2022 한국육종학회지 Vol.54 No.4
As recent advances in gene editing technologies have enabled rapid and accurate modification of target genes, new varieties are being developed through the application of gene editing technologies in various crop species. In particular, the CRISPR/Cas9 system has become a tool of choice for gene editing because it is much more economical and efficient than previous tools such as ZFN and TALEN, and is being actively used to improve various breeding traits, including biotic and abiotic stress tolerance to overcome the limitations of conventional plant breeding technologies. In this review, we retrieved 210 papers describing the utilization of CRISPR/Cas9 in rice published between 2013 and 2021 and classified them according to the field of study and traits of interest. Further case studies were conducted on 21 and 12 research papers that reported the enhancement of biotic and abiotic stress tolerance, respectively. This demonstrated that CRISPR/Cas9-based gene editing can be highly effective in improving resistance to bacterial (bacterial leaf blight and bacterial leaf streak), fungal (blast, sheath blight), and viral (rice tungro spherical virus, rice black streak virus) diseases as well as various abiotic stresses, including drought, salinity, cold, and heat, in many cases, without diminishing important agronomic traits. As recent technological advances have begun to overcome the major limitations of CRISPR/Cas9 gene editing, such as low HDR efficiency and off-target effects, it is expected that more research on gene function and cultivar development will adopt CRISPR/Cas9 as a major gene editing tool in the future. To effectively apply such innovative technologies in crop improvement, much effort is required to establish more reasonable and detailed policies for regulating crops developed through new breeding technologies.
홍수민(Sumin Hong),김경민(Kyeong-Min Kim),최창현(Changhyun Choi),조성우(Seong-Woo Cho),박철수(Chul Soo Park),모영준(Youngjun Mo) 한국육종학회 2023 Plant Breeding and Biotechnology Vol.11 No.3
Understanding the genetics underlying heading date and yield-related traits is essential in wheat breeding formaximizing productivity under different environments. Using doubled haploid lines derived from two Korean wheat cultivars, weidentified seven stable quantitative trait loci (QTLs) for yield-related traits, i.e., days to heading date (QDhd.jbnu-3B, QDhd.jbnu-6B,and QDhd.jbnu-7D), culm length (QCl.jbnu-6A), thousand kernel weight (QTkw.jbnu-6A), kernels per spike (QKps.jbnu-3B) and testweight (QTw.jbnu-1A). Compared to the lines carrying the allele for late heading, those carrying the allele for early heading atQDhd.jbnu-3B, QDhd.jbnu-6B, and QDhd.jbnu-7D headed 3.1, 2.0, and 1.7 days earlier, respectively. Interestingly, when the allelesfor early heading at the three QTLs were accumulated, heading date was accelerated by approximately one week, indicating that theseQTLs provide useful genetic resources to fine-tune heading date. However, as the alleles for early heading at all three QTLs wereassociated with decreased kernels per spike, caution is required when deploying them to minimize the negative impacts on yield. Ourstudy provides useful information for developing wheat cultivars with optimal heading date and enhanced productivity.