在全寄生 Balanophoraceae 中极端的塑体并不是常态
Woorin Kim1, Thea Lautenschläger1,2, Jay F Bolin3
1Institut für Botanik, Technische Universität Dresden, Dresden, Germany.
BMC genomics
|June 15, 2023
概括
这项研究揭示了Balanophoraceae塑料体的显著多样性,其中Sarcophyte具有更大的基因组,Thonningia显示极端减少和改变的遗传密码,挑战了以前的进化模型.
科学领域:
- 植物基因组学 植物基因组学
- 进化生物学是进化的生物学.
- 进行比较的基因组学.
背景情况:
- 巴拉诺福拉ceae 石膏体表现出极端的凝结,重新排列和核酸组成偏差.
- 在这个家族中发生了两个独立的遗传代码重新配置.
- 巨大的Balanophoraceae多样性仍然未被探索,阻碍了进化分析.
研究的目的:
- 为了研究 Balanophoraceae 塑料体的进化模式.
- 为了分析Sarcophyte sanguinea和Thonningia sanguinea的新测序的塑体体.
- 了解Balanophoraceae塑料体的多样性和进化轨迹.
主要方法:
- 对新测序的塑体组进行比较基因组学分析.
- 对Sarcophyte sanguinea和Thonningia sanguinea塑料体的分析.
- 使用代表性分类型抽样进行可靠的比较.
主要成果:
- 萨尔科菲特塑体比先前发表的更大50%,保留了独特的基因,如matK和五个ciss-spliced内核.
- 宁亚的塑料体高度缩小,类似于其他Balanophoraceae,有一个cis-spliced的内核和偏向的子使用,包括TAG停止子.
- 在Balanophoraceae塑料体内发现了多种新的结构重组.
结论:
- 宁亚塑体很可能使用一种改变的遗传密码,类似于巴拉诺波拉.
- 萨尔科菲特塑体体表现出不那么极端的核酸组成,没有改变遗传密码的证据.
- 提出了Balanophoraceae塑体进化的更新模型,突出了更大的多样性并确定了重新配置的热点.
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