Genome-wide signatures of flowering adaptation to climate temperature: Regional analyses in a highly diverse native range of Arabidopsis thaliana.
Genome-wide signatures of flowering adaptation to climate temperature: Regional analyses in a highly diverse native range of Arabidopsis thaliana.
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开花适应气候温度的全基因组特征：拟南芥高度多样化的本地范围的区域分析。
DOI：
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
C. Alonso‐Blanco
中科院分区：
文献类型：
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作者：
D. Tabas;B. Méndez‐Vigo;Noelia Arteaga;A. Marcer;A. Pascual;D. Weigel;F. Xavier Picó;C. Alonso‐Blanco
当前的全球变化激发了人们对了解植物适应气候的遗传和分子机制的兴趣。特别是，改变开花时间是逃避不利气候温度的常见策略。为了确定开花时间适应这种气候因素的基因组基础，我们系统地分析了从伊比利亚半岛收集的174个高度多样化的拟南芥加入。对188万个单核苷酸多态性的分析为人口和适应过程对遗传变异的地理模式的空间异质性贡献提供了证据。山区似乎是等位基因扩散的障碍，而开花时间和温度之间的关系取决于精确的温度范围。环境全基因组关联支持整体基因组对温度的适应，其中9.4%的基因显示出显著的关联。此外，表型全基因组关联提供了一个潜在的开花时间变化的候选基因的目录。最后，环境和表型全基因组关联的比较确定了已知的（FT的孪生姐妹，FRIGIDA样1和酪蛋白激酶II β链1）和新的（Epithiospecifer修饰剂1和电压依赖性阴离子通道5）基因作为通过改变开花时间来适应气候温度的候选基因。因此，这一区域收集提供了一个很好的资源，以解决一年生植物气候适应的空间复杂性。
Current global change is fueling an interest to understand the genetic and molecular mechanisms of plant adaptation to climate. In particular, altered flowering time is a common strategy for escape from unfavourable climate temperature. In order to determine the genomic bases underlying flowering time adaptation to this climatic factor, we have systematically analysed a collection of 174 highly diverse Arabidopsis thaliana accessions from the Iberian Peninsula. Analyses of 1.88 million single nucleotide polymorphisms provide evidence for a spatially heterogeneous contribution of demographic and adaptive processes to geographic patterns of genetic variation. Mountains appear to be allele dispersal barriers, whereas the relationship between flowering time and temperature depended on the precise temperature range. Environmental genome-wide associations supported an overall genome adaptation to temperature, with 9.4% of the genes showing significant associations. Furthermore, phenotypic genome-wide associations provided a catalogue of candidate genes underlying flowering time variation. Finally, comparison of environmental and phenotypic genome-wide associations identified known (Twin Sister of FT, FRIGIDA-like 1, and Casein Kinase II Beta chain 1) and new (Epithiospecifer Modifier 1 and Voltage-Dependent Anion Channel 5) genes as candidates for adaptation to climate temperature by altered flowering time. Thus, this regional collection provides an excellent resource to address the spatial complexity of climate adaptation in annual plants.
影响因子：
16.6
作者：
Liu, Liangyu;Adrian, Jessika;Pankin, Artem;Hu, Jinyong;Dong, Xue;von Korff, Maria;Turck, Franziska
通讯作者：
Turck, Franziska
影响因子：
7.4
作者：
Anderson, Jill T.;Panetta, Anne Marie;Mitchell-Olds, Thomas
通讯作者：
Mitchell-Olds, Thomas
使用多位点基因型数据推断群体结构：连锁位点和相关等位基因频率。
影响因子：
3.3
作者：
Falush,Daniel;Stephens,Matthew;Pritchard,JonathanK
通讯作者：
Pritchard,JonathanK