Stepwise selection on homeologous PRR genes controlling flowering and maturity during soybean domestication
Stepwise selection on homeologous PRR genes controlling flowering and maturity during soybean domestication
复制标题
大豆驯化过程中控制开花和成熟的同源PRR基因的逐步选择
DOI：
10.1038/s41588-020-0604-7
复制
发表时间：
2020-03-30
期刊：
影响因子：
30.8
通讯作者：
Kong, Fanjiang
中科院分区：
文献类型：
--
作者：
Lu, Sijia;Dong, Lidong;Kong, Fanjiang
植物物候的适应性变化通常被认为是所谓的“驯化综合征”的一个特征，它将现代作物与其野生祖先区分开来，但很少有详细的证据支持这一观点。大豆是一种主要的豆科作物，开花时间变异在驯化种质中具有很好的特征，对现代生产至关重要，但其在驯化过程中的重要性尚不清楚。在这里，我们确定了两个homeopathy的伪响应调节基因，Tof12和Tof11，古老的开花时间适应的顺序贡献，并证明他们通过LHY同源物，以促进豆类特定的E1基因的表达和延迟开花长光周期。我们发现，Tof12依赖的加速成熟伴随着减少大豆驯化过程中的休眠和种子传播，可能会诱发初期作物的纬度扩张。更好地了解作物进化的早期阶段将有助于确定驯化过程中丢失的功能变异，并利用其潜力为未来的作物improvement.Whole基因组重测序和关联分析在424大豆加入确定两个homeoprotein基因，有助于开花时间适应大豆驯化。
Adaptive changes in plant phenology are often considered to be a feature of the so-called 'domestication syndrome' that distinguishes modern crops from their wild progenitors, but little detailed evidence supports this idea. In soybean, a major legume crop, flowering time variation is well characterized within domesticated germplasm and is critical for modern production, but its importance during domestication is unclear. Here, we identify sequential contributions of two homeologous pseudo-response-regulator genes, Tof12 and Tof11, to ancient flowering time adaptation, and demonstrate that they act via LHY homologs to promote expression of the legume-specific E1 gene and delay flowering under long photoperiods. We show that Tof12-dependent acceleration of maturity accompanied a reduction in dormancy and seed dispersal during soybean domestication, possibly predisposing the incipient crop to latitudinal expansion. Better understanding of this early phase of crop evolution will help to identify functional variation lost during domestication and exploit its potential for future crop improvement.Whole-genome resequencing and association analyses in 424 soybean accessions identify two homeologous genes that contributed to flowering time adaptation during soybean domestication.