Soybean adaption to high-latitude regions is associated with natural variations of GmFT2b, an ortholog of FLOWERING LOCUS T
Soybean adaption to high-latitude regions is associated with natural variations of GmFT2b, an ortholog of FLOWERING LOCUS T
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DOI：
10.1111/pce.13695
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发表时间：
2020-01-25
影响因子：
7.3
通讯作者：
Hou, Wensheng
中科院分区：
文献类型：
--
作者：
Chen, Li;Cai, Yupeng;Hou, Wensheng
日长对许多植物的开花和生长习性有重要影响。在大豆等作物中，光周期敏感性决定了给定栽培品种可以生长和开花的地理范围。大豆基因组包含10个与FT同源的基因，FT是拟南芥开花的中心调节因子。然而，这些大豆FTs的确切作用尚不清楚。在这里，我们表明，这样一个基因，GmFT2b，促进开花下长日（LD）。GmFT 2b的过表达上调开花相关基因的表达，这些基因在调节开花时间中是重要的。本文提出了短日和长日条件下大豆开花的“权重”模型。此外，我们研究了195个大豆品种的GmFT2b序列，以及开花表型，地理分布和成熟期组。我们发现，Hap3，一个主要的GmFT2b单倍型，与显着提前开花在高纬度地区。我们期望我们的检测为大豆的遗传改良提供重要的资源，包括大豆育种的新种质，也增加了我们对大豆FT基因家族功能多样性的理解。
Day length has an important influence on flowering and growth habit in many plant species. In crops such as soybean, photoperiod sensitivity determines the geographical range over which a given cultivar can grow and flower. The soybean genome contains 10 genes homologous to FT, a central regulator of flowering from Arabidopsis thaliana. However, the precise roles of these soybean FTs are not clearly. Here we show that one such gene, GmFT2b, promotes flowering under long-days (LDs). Overexpression of GmFT2b upregulates expression of flowering-related genes which are important in regulating flowering time. We propose a 'weight' model for soybean flowering under short-day (SD) and LD conditions. Furthermore, we examine GmFT2b sequences in 195 soybean cultivars, as well as flowering phenotypes, geographical distributions and maturity groups. We found that Hap3, a major GmFT2b haplotype, is associated with significantly earlier flowering at higher latitudes. We anticipate our assay to provide important resources for the genetic improvement of soybean, including new germplasm for soybean breeding, and also increase our understanding of functional diversity in the soybean FT gene family.