Tavares Juan C Camargo, Achakkagari Sai Reddy, Archambault Annie, Strömvik Martina V
Department of Plant Science, McGill University, Macdonald Campus, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada.
Genome. 2022 May;65(5):301-313. doi: 10.1139/gen-2021-0059. Epub 2022 Mar 4.
Anatomical and physiological specializations for plant adaptation to harsh climates result from molecular mechanisms that can be encoded in the nucleus or organelle. In this study, the complete plastomes of an arctic species, Bunge (Fabaceae), and a closely related temperate species, Douglas ex Hook., were assembled, annotated, and analyzed to identify differences that might help explain their adaptation to different environments. This is consistent with the previously sequenced DC. and plastomes, and plastomes both have the common features of the inverted repeat-lacking clade (IRLC), as well as F intron loss, which is unique to the genus. However, significant differences were observed between the plastomes of and and other closely related species ( spp. and spp.), including a 3 kb inversion, two large insertions (>1 kb), significant modifications of the gene, and an overall larger size.
植物适应恶劣气候的解剖学和生理学特化源于可编码在细胞核或细胞器中的分子机制。在本研究中，组装、注释并分析了北极物种 Bunge（豆科）和与其密切相关的温带物种 Douglas ex Hook. 的完整质体基因组，以确定可能有助于解释它们对不同环境适应性的差异。这与先前测序的 DC. 和 质体基因组一致， 质体基因组和 质体基因组都具有缺乏反向重复序列分支（IRLC）的共同特征，以及 F 内含子缺失，这是该属特有的。然而，在 和 以及其他密切相关物种（ spp. 和 spp.）的质体基因组之间观察到显著差异，包括一个 3 kb 的倒位、两个大的插入片段（>1 kb）、 基因的显著修饰以及总体上更大的尺寸。
