洞察了叶绿体基因组结构和植物遗传关系在的物种复杂 (Pedaliaceae)
Yedomon Ange Bovys Zoclanclounon1,2, Senthil Kumar Thamilarasan1, Youngjun Mo2
1Genomics Division, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, Republic of Korea.
Frontiers in genetics
|June 16, 2023
概括
野生芝麻亲属的基因组资源被生成,揭示了家族遗传关系,并提出了新的物种名称. 这项研究提供了基本的数据,以了解芝麻复合物的物种化.
科学领域:
- 植物基因组学 植物基因组学
- 进化生物学 进化生物学
- 人类遗传学 是一个学科.
背景情况:
- 野生 * 芝麻 * 种类的有限基因组数据阻碍了对它们的进化历史和遗传学关系的理解.
- "芝麻"物种复杂包括复杂的分类学分类的种植和野生亲属.
研究的目的:
- 为了生成六种野生 * 芝麻 * 亲属和一种品种的完整的叶绿体基因组.
- 为了推断植物遗传关系和分歧时间在 * 芝麻 * 种群复杂.
- 根据基因组数据提出分类学修订建议.
主要方法:
- 整个叶绿体基因组测序和组装.
- 进行比较基因组分析以确定保存和可变区域.
- 使用最大概率和贝叶斯方法进行基因推理.
- 使用分子钟方法估计分离时间.
主要成果:
- 获得了 *Sesamum alatum*, *S. angolense*, *S. pedaloides*, *Ceratotheca sesamoides* (同义词) 的完整的叶绿体基因组. *S.芝麻*), *C.三鱼* (同义词:三鱼), *S.芝麻*), *C.三鱼* (同义词:三鱼), *S.芝麻* (同义词:芝麻) *S. trilobum*), *S. radiatum* 和 *S. indicum* cv. 这三种类型的植物都被发现. 这就是Goenbaek.
- 叶绿体基因组显示保存结构但高核酸多样性在基因如 * ndhF *,有用的物种歧视.
- 遗传学分析表明*S. radiatum*和*C. sesamoides*大约在0.05亿年前分离,而*S. alatum*代表了一个早期分离的血统.
结论:
- 这项研究支持将*Ceratotheca sesamoides*重新命名为*Sesamum sesamoides*和*Ceratotheca triloba*重新命名为*Sesamum trilobum*.
- 提供了第一个基因组的见解,培养和野生非洲 * 芝麻 * 亲属的遗传学关系.
- 建立了基因组基础,为未来的物种化研究在 * 芝麻 * 综合体.
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