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鲁塔系植物的比较性叶绿体基因组学:结构差异,适应性进化和家族基因学影响

Yichao Chen¹, Ningge Liu², Hong Wang¹

¹Wenzhou Vocational College of Science and Technology, Wenzhou, China.

Frontiers in plant science

|October 20, 2025

概括

对35种鲁塔属植物物种的叶绿体基因组分析揭示了保存的结构与谱系特定的变化. 关键基因显示了积极选择的迹象,表明了适应性进化和帮助植物分类.

科学领域:

植物进化生物学植物进化生物学
基因组学就是基因组学.
人类遗传学是一个学科.

背景情况:

叶绿体基因组对于理解植物进化和关系至关重要.
鲁塔家族为研究质细胞基因组动态提供了多样化的系统.

研究的目的:

进行35种鲁塔系植物种类中质细胞基因组的综合比较分析.
为了研究 Rutaceae 叶绿体基因组内的进化模式,结构变异和选择压力.
为了建立一个分子框架的Rutaceae分类学和理解适应性进化.

主要方法:

35种 Rutaceae 叶绿细胞基因组的比较基因组学.
对基因组结构,简单序列重复 (SSR) 和对线性进行分析.
评估相对同义使用率 (RSCU) 和选择压力 (Ka/Ks比率).
用叶绿体基因组数据进行基因组重建.

主要成果:

鲁塔氏菌的叶绿体基因组表现出保存的四部分结构,在IR边界有微小的变化.
富含AT的SSR在非编码区域中普遍存在;观察到高序列保存与谱系特定的重新排列.
检测到显著的编码子使用异质性和偏离中性进化.
光合作用基因正在进行净化选择,而matK和rpl20等特定基因显示积极的选择信号.
遗传学分析支持Murraya paniculata与其他Murraya,类和Clausena物种的密切关系.

结论:

叶绿体基因组进化在 Rutaceae 具有结构性保护和局部适应性变化的特点.
选择压力在基因之间有所不同,有证据表明积极的选择在特定区域推动了适应.
这项研究为Rutaceae家族中的分类学修订提供了坚实的分子基础.
这些发现增强了对叶绿体基因组进化及其在植物适应中的作用的理解.

关键词:

穆雷亚惊慌失措的恐慌黄叶植物 (Rutaceae) 是一个植物.适应性进化是适应性的进化.叶绿体基因组的基因组进行比较的基因组学.人类的基因组学.选择压力选择压力

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