Draft genome of the famous ornamental plant Paeonia suffruticosa
Draft genome of the famous ornamental plant Paeonia suffruticosa
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DOI：
10.1002/ece3.5965
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发表时间：
2020-05-12
影响因子：
2.6
通讯作者：
Zhang, Canjun
中科院分区：
文献类型：
--
作者：
Lv, Shuzuo;Cheng, Shu;Zhang, Canjun
牡丹（Paeonia Sect. Moutan）是著名的观赏植物，在世界范围内具有巨大的历史、文化和经济意义。在这项研究中，我们报道了一种广泛种植的牡丹品种“洛神小春”的类似 13.79 Gb 的基因组草案，代表了迄今为止双子叶植物中最大的测序基因组。基于基因组序列的系统发育分析表明，P. suffruticosa 被视为 Vitales 的姐妹，它们一起形成了一个与 Rosids 姐妹的进化枝，弱支持（（虎耳草目和 Vitales）和 Rosids）之间的关系。基于牡丹基因组组装和从头转录组组装的MADS-box基因的鉴定和表达分析表明，C类基因的功能在花发育中受到限制，这可能是牡丹品种雄蕊花瓣形成的原因。总体而言，芍药科的第一个基因组测序为牡丹的起源、驯化、进化研究以及品种选育提供了重要资源。
Tree peony (Paeonia Sect. Moutan) is a famous ornamental plant, with huge historical, cultural, and economic significance worldwide. In this study, we reported the similar to 13.79 Gb draft genome of a wide-grown Paeonia suffruticosa cultivar "Luo shen xiao chun," representing the largest sequenced genome in dicots to date. Phylogenetic analyses based on genome sequences demonstrated that P. suffruticosa was placed as sister to Vitales, and they together formed a clade that was sister to Rosids, weakly supporting a relationship of ((Saxifragales and Vitales) and Rosids). The identification and expression analysis of MADS-box genes based on the genome assembly and de novo transcriptome assembly of P. suffruticosa revealed that the function of C class genes was restricted in flower development, which might be responsible for the stamen petalody in tree peony cultivars. Overall, the first sequenced genome in the family Paeoniaceae provides an important resource for the origin, domestication, and evolutionary study as well as cultivar breeding in tree peony.