Population genomics of Mediterranean oat (A. sativa) reveals high genetic diversity and three loci for heading date.
Population genomics of Mediterranean oat (A. sativa) reveals high genetic diversity and three loci for heading date.
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DOI：
10.1007/s00122-021-03805-2
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发表时间：
2021-07
期刊：
影响因子：
--
通讯作者：
Prats E
中科院分区：
文献类型：
--
作者：
Canales FJ;Montilla-Bascón G;Bekele WA;Howarth CJ;Langdon T;Rispail N;Tinker NA;Prats E
地中海燕麦的基因组分析揭示了高的遗传多样性和三个位点的适应这种环境。这些信息与表型和护照数据一起收集在交互式地图中，将成为燕麦遗传改良的重要资源。在二十世纪，燕麦地方品种越来越多地被现代栽培品种所取代，导致遗传多样性的丧失。然而，地方品种有相当大的潜力，以提高疾病和非生物胁迫的耐受性，并可能优于品种在低投入系统。在这项工作中，我们组装了一个面板的669燕麦地方品种从地中海沿岸和40栽培燕麦品种，并进行了第一次大规模的人口遗传分析的红色和白色燕麦类型的地中海起源。我们创建了一个与交互式地图相关联的公共数据库，以可视化每个登录的信息。燕麦收集基因型与17，288单核苷酸多态性（SNP）位点，以评估人口结构和连锁不平衡（LD），进行全基因组关联研究（GWAs）抽穗期，一个关键字符密切相关的性能在这个干旱易发地区。群体遗传分析采用结构和主成分分析区分两个主要群体组成的红色和白色燕麦，分别。白色燕麦组又分为两个亚组。连锁群Mrg 01、02、04、12、13、15、23、33中的白色线内LD衰减较慢，而Mrg 03、05、06、11、21、24和28中的红线内LD衰减较慢。关联分析表明，与抽穗期相关的标记主要集中在白色燕麦连锁群Mrg 13上，而在红燕麦连锁群Mrg 01和Mrg 08上。在线版本包含补充材料，可通过10.1007/s 00122 -021-03805-2获得。
Genomic analysis of Mediterranean oats reveals high genetic diversity and three loci for adaptation to this environment. This information together with phenotyping and passport data, gathered in an interactive map, will be a vital resource for oat genetic improvement. During the twentieth century, oat landraces have increasingly been replaced by modern cultivars, resulting in loss of genetic diversity. However, landraces have considerable potential to improve disease and abiotic stress tolerance and may outperform cultivars under low input systems. In this work, we assembled a panel of 669 oat landraces from Mediterranean rim and 40 cultivated oat varieties and performed the first large-scale population genetic analysis of both red and white oat types of Mediterranean origin. We created a public database associated with an interactive map to visualize information for each accession. The oat collection was genotyped with 17,288 single-nucleotide polymorphism (SNP) loci to evaluate population structure and linkage disequilibrium (LD); to perform a genome-wide association study (GWAs) for heading date, a key character closely correlated with performance in this drought-prone area. Population genetic analysis using both structure and PCA distinguished two main groups composed of the red and white oats, respectively. The white oat group was further divided into two subgroups. LD decay was slower within white lines in linkage groups Mrg01, 02, 04, 12, 13, 15, 23, 33, whereas it was slower within red lines in Mrg03, 05, 06, 11, 21, 24, and 28. Association analysis showed several significant markers associated with heading date on linkage group Mrg13 in white oats and on Mrg01 and Mrg08 in red oats. The online version contains supplementary material available at 10.1007/s00122-021-03805-2.
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影响因子：
4.4
作者：
Alheit KV;Maurer HP;Reif JC;Tucker MR;Hahn V;Weissmann EA;Würschum T
通讯作者：
Würschum T
影响因子：
13.8
作者：
Bekele WA;Wight CP;Chao S;Howarth CJ;Tinker NA
通讯作者：
Tinker NA
影响因子：
5.8
作者：
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通讯作者：
Buckler, Edward S.
影响因子：
7.2
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通讯作者：
Penin, Aleksey A.
影响因子：
3.7
作者：
Huang YF;Poland JA;Wight CP;Jackson EW;Tinker NA
通讯作者：
Tinker NA