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[PB-0080] Identification of a novel locus (C2) controlling canary yellow flesh in watermelons
Girim Park(Girim Park),Yunseo Choi(Yunseo Choi),Seoyeon Park(Seoyeon Park),Kaeun Jang(Kaeun Jang),Yongjae Kim(Yongjae Kim),Gibeom Kwon(Gibeom Kwon),Younghoon Park(Younghoon Park) 한국육종학회 2022 한국육종학회 공동학술발표집 Vol.2022 No.-
Girim Park,Joonyup Kim,Bingkui Jin,Hee-Bum Yang,Sung-Woo Park,Sun-Cheol Kang,Sang-Min Chung,Younghoon Park 한국원예학회 2018 원예과학기술지 Vol.36 No.2
Watermelon is an economically important member of the Cucurbitaceae family. Cultivated watermelons (C. lanatus ssp. lanatus) have diverse fruit-related traits such as size, shape, color of flesh and skin, and the striped rind pattern. In this study, the whole genomes of 19 inbred watermelon lines were resequenced and genome-wide sequence variations were analyzed for the development of markers for MABC (marker-assisted backcross). Based on the single nucleotide polymorphisms (SNPs) and insertion/deletion (InDel) detected, we evaluated the distribution of genome-wide diversity, genetic relationship, cultivar type-specific allele abundance, and sequence divergence at quantitative trait loci (QTLs). For MABC, a total of 1,374 SNPs were selected at intervals of 0.5 Mb based on the Polymorphism Information Content (PIC) value. Principal components analysis (PCA) of the 19 cultivars was based on 1,374 SNPs to classify them into three major groups, which indicated a clear grouping pattern between Crimson-type and Jubilee-type watermelons. In addition, a set of SNPs (259) that discriminated Crimson-type cultivars from the non-Crimson-type were also selected. For the verification of SNPs, 26 cleavage amplified polymorphic sequence (CAPS) markers were designed based on the SNPs and used to genotype 11 cultivars, which resulted in high agreement rates above 0.8 for most of the markers. Our study uncovers the genetic diversity underlying cultivated watermelon species and provides genetic information useful for the development of molecular markers for marker-assisted breeding (MAB) strategies.
박기림(Girim Park),김나희(Nahui Kim),박영훈(Younghoon Park) 한국생명과학회 2015 생명과학회지 Vol.25 No.9
수박과 멜론은 경제적 중요성을 지니는 대표적인 박과 작물이다. 최근 유전자 지도 작성 및 차세대 유전체 염기서열 분석에 기반한 분자마커 개발과 염기서열변이 탐색은 마커 이용 선발 및 여교잡 등 분자육종을 통한 품종육성에 필수적 기술이다. 본 연구에서는 이들 작물에 대한 국내외 유전체 분석 과 분자마커 개발 현황에 대해 분석 · 정리함으로서 향후 분자육종에 활용할 수 있는 정보를 제공하고자 하였다. 수박과 멜론은 참조유전체의 염기서열이 밝혀졌으며 다수의 유전자 지도가 작성되어 수량, 과특성, 내병성과 같은 주요 형질과 연관된 마커의 개발과 관련 유전자의 탐색이 꾸준히 진행되고 있다. 현재까지 해외에서 보고된 유전자지도는 수박 멜론 각 각 16종 이상이며, 40개 이상의 주요형질에 대한 유전자좌와 연관 마커들이 존재한다. 더욱이 고밀도 유전자 지도와 유전자지도 기반 클로닝을 통해 이러한 형질을 조절하는 기능 유전자에 정보가 밝혀지고 있다. 또한 참조게놈정보를 기반으로 한 다양한 유전자원의 전장유전체염기서열 재분석이 꾸준히 이루어지고 있다. 새로운 분자마커의 자체적 개발과 더불어 이와 같이 현재 활용 가능한 공개된 마커들의 정보를 통해 유전체학 이용 육종과정을 크게 앞당길 수 있을 것이다. Watermelon and melon are economically important Cucurbitaceae crops. Recently, the development of molecular markers based on the construction of genetic linkage maps and detection of DNA sequence variants through next generation sequencing are essential as molecular breeding strategies for crop improvement that uses marker-assisted selection and backcrossing. In this paper, we intended to provide useful information for molecular breeding of watermelon and melon by analyzing the current status of international and domestic research efforts on genomics and molecular markers. Due to diverse genetic maps constructed and the reference genome sequencing completed in the past, DNA markers that are useful for selecting important traits including yield, fruit quality, and disease resistances have been reported and publicly available. To date, more than 16 genetic maps and loci and linked markers for more than 40 traits have reported for each watermelon and melon. Furthermore, the functional genes that are responsible for those traits are being continuously discovered by high-density genetic map and map-based cloning. In addition, whole genome resequencing of various germplasm is under progress based on the reference genome. Not only by the efforts for developing novel molecular markers, but application of public marker information currently available will greatly facilitate breeding process through genomics-assisted breeding.