Contrasting genetic regulation of plant development in wild barley grown in two European environments revealed by nested association mapping.
Contrasting genetic regulation of plant development in wild barley grown in two European environments revealed by nested association mapping.
复制标题
DOI：
10.1093/jxb/ery002
复制
发表时间：
2018-03-24
影响因子：
6.9
通讯作者：
Pillen K
中科院分区：
文献类型：
--
作者：
Herzig P;Maurer A;Draba V;Sharma R;Draicchio F;Bull H;Milne L;Thomas WTB;Flavell AJ;Pillen K
大麦巢式关联作图群体中的植株发育受基因型（野生供体等位基因）和环境（地理位置）相互作用的影响。大麦比世界上其他主要作物种植得更广泛，因为它能很好地适应环境的限制，如干旱，炎热和日照长度。为了更好地了解大麦地方适应的遗传控制，我们研究了嵌套关联作图群体HEB-25的发展，来自杂交25个野生大麦品种“树皮”。HEB-25在邓迪（苏格兰）和哈雷（德国）的重复田间试验中栽培，在日长、降水和温度方面不同。应用全基因组关联研究，我们分别在邓迪和哈雷定位了60个和66个调控8个植物发育性状的QTL区域。许多QTL可以用已知的调控植物发育的主效基因如光周期基因1（Ppd-H1）和开花位点T（HvFT-1）来解释。此外，我们还观察到HEB-25的发育性状部分受到基因型×环境和基因型×供体互作的控制，即位置特异性和家系特异性QTL效应。我们的研究结果表明，QTL等位基因可在野生大麦基因库中显示出对植物发育的对比效应，这可能是部署，以提高适应未来的环境变化的栽培大麦。
Plant development in a barley nested association mapping population is controlled by interacting genotypic (wild donor alleles) and environmental (geographical location) effects. Barley is cultivated more widely than the other major world crops because it adapts well to environmental constraints, such as drought, heat, and day length. To better understand the genetic control of local adaptation in barley, we studied development in the nested association mapping population HEB-25, derived from crossing 25 wild barley accessions with the cultivar ‘Barke’. HEB-25 was cultivated in replicated field trials in Dundee (Scotland) and Halle (Germany), differing in regard to day length, precipitation, and temperature. Applying a genome-wide association study, we located 60 and 66 quantitative trait locus (QTL) regions regulating eight plant development traits in Dundee and Halle, respectively. A number of QTLs could be explained by known major genes such as PHOTOPERIOD 1 (Ppd-H1) and FLOWERING LOCUS T (HvFT-1) that regulate plant development. In addition, we observed that developmental traits in HEB-25 were partly controlled via genotype × environment and genotype × donor interactions, defined as location-specific and family-specific QTL effects. Our findings indicate that QTL alleles are available in the wild barley gene pool that show contrasting effects on plant development, which may be deployed to improve adaptation of cultivated barley to future environmental changes.
登录
查看更多内容
影响因子：
5.3
作者：
Campoli C;Shtaya M;Davis SJ;von Korff M
通讯作者：
von Korff M
影响因子：
3.9
作者：
Calixto, Cristiane P. G.;Waugh, Robbie;Brown, John W. S.
通讯作者：
Brown, John W. S.
影响因子：
3.1
作者：
Cantalapiedra, Carlos P.;Boudiar, Ridha;Contreras-Moreira, Bruno
通讯作者：
Contreras-Moreira, Bruno
影响因子：
7.4
作者：
Ejaz, Mahwish;von Korff, Maria
通讯作者：
von Korff, Maria
影响因子：
7.4
作者：
Chono, M;Honda, I;Watanabe, Y
通讯作者：
Watanabe, Y