一种类型的巴奥利亚 (Amaranthaceae s.l.) 的家族遗传位置. 基于形态和分子证据的基础上
Shuai Liu1, Marie Claire Veranso-Libalah2, Alexander P Sukhorukov3,4
1College of Life Sciences, Xinjiang Agricultural University, Urumqi, 830052, China.
BMC plant biology
|May 24, 2024
概括
这项研究揭示了Baolia bracteata的遗传学位置,使用了叶绿体基因组. 巴奥利亚和Corispermoideae形成一个类,这表明Corispermoideae的更广泛的分类.
科学领域:
- 植物系统学和植物遗传学
- 分子生物学分子生物学
- 进化植物学 进化植物学
背景情况:
- 巴奥利亚H.W.Kung & G.L.Chu是一种单型属,在陈科中系统地位不确定.
- 它独特的形态解剖学特征与其他陈科不同,促使进一步调查.
- 以前的研究表明,Baolia可能是Corispermoideae的姊妹群.
研究的目的:
- 为了测序和比较Baolia bracteata的叶绿体基因组.
- 通过使用叶绿体基因组和标记物序列数据来解决Baolia的遗传学位置.
- 为了研究陈科的进化关系,特别是关于Corispermoideae亚家族.
主要方法:
- 从Baolia bracteata和Corispermum物种中测序了18个叶绿体基因组.
- 使用完整的叶绿体基因组 (33个物种) 和联合标记序列 (来自91个物种的ITS,rbcL,matK) 的植物遗传学分析.
- 分子约会和祖先状态重建以推断分歧时间和祖先特征.
主要成果:
- 巴奥利亚的叶绿体基因组在152,499至152,508 bp之间,简单序列重复 (SSR) 主要发生在LSC区域.
- 遗传学分析强烈地将Baolia和Corispermoideae (Agriophyllum,Anthochlamys,Corispermum) 作为Acroglochin.chin的一个姐妹类.
- 分子约会表明,大约4449万年前 (mya) 在Acroglochin,Baolia和Corispermeae之间发生了分歧事件.
结论:
- 巴奥利亚与核心的Corispermoideae共享symplesiomorphic特征,包括围心和种子外衣的特征.
- 在特定的Chenopodioideae物种 (Atriplex,Chenopodium) 中观察到大约3,100bp的显著逆转.
- 这项研究提出了扩大Corispermoideae的分类,包括Corispermeae,Acroglochineae (Acroglochin) 和Baolieae (Baolia) 部落.
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