Ireland Hilary S, Wu Chen, Deng Cecilia H, Hilario Elena, Saei Ali, Erasmuson Sylvia, Crowhurst Ross N, David Karine M, Schaffer Robert J, Chagné David
The New Zealand Institute for Plant and Food Research Ltd, Private Bag 92196, Auckland Mail Centre, Auckland, 1142, New Zealand.
School of Biological Sciences, The University of Auckland, Private Bag 92019, Auckland Mail Centre, Auckland, 1142, New Zealand.
Hortic Res. 2021 Nov 1;8(1):233. doi: 10.1038/s41438-021-00662-4.
The Rosaceae family has striking phenotypic diversity and high syntenic conservation. Gillenia trifoliata is sister species to the Maleae tribe of apple and ~1000 other species. Gillenia has many putative ancestral features, such as herb/sub-shrub habit, dry fruit-bearing and nine base chromosomes. This coalescence of ancestral characters in a phylogenetically important species, positions Gillenia as a 'rosetta stone' for translational science within Rosaceae. We present genomic and phenological resources to facilitate the use of Gillenia for this purpose. The Gillenia genome is the first fully annotated chromosome-level assembly with an ancestral genome complement (x = 9), and with it we developed an improved model of the Rosaceae ancestral genome. MADS and NAC gene family analyses revealed genome dynamics correlated with growth and reproduction and we demonstrate how Gillenia can be a negative control for studying fleshy fruit development in Rosaceae.
蔷薇科具有显著的表型多样性和高度的共线性保守性。三叶吉氏木是苹果所属的梨族以及约1000个其他物种的姐妹种。吉氏木具有许多假定的祖先特征，如草本/亚灌木习性、结干果以及九条基数染色体。这些祖先特征在一个系统发育重要物种中的汇聚，使吉氏木成为蔷薇科翻译科学的“罗塞塔石碑”。我们提供了基因组和物候资源，以促进为此目的对吉氏木的利用。吉氏木基因组是第一个具有祖先基因组互补（x = 9）的完全注释的染色体水平组装，利用它我们开发了一个改进的蔷薇科祖先基因组模型。MADS和NAC基因家族分析揭示了与生长和繁殖相关的基因组动态，并且我们展示了吉氏木如何能够作为研究蔷薇科肉质果实发育的阴性对照。
