复杂的内共生I:从初级到复杂的塑体,连续的内共生事件
Zoltán Füssy1,2, Miroslav Oborník3,4
1Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA.
Methods in molecular biology (Clifton, N.J.)
|March 19, 2024
概括
藻类中复杂的塑性体,由真核生物-真核生物内共生产生,已经多次进化. 这些嵌合体细胞展示了基因转移和适应,尽管光合作用经常丢失.
科学领域:
- *真核细胞生物学的细胞生物学
- *内生共生和进化生物学
- * 光合作用藻类的多样性
背景情况:
- *真核光体表现出多样化的塑体,其中许多源自真核生物之间的内共生事件.
- * 复杂的塑体,具有多个外膜和核形体的特征,代表了嵌合式细胞结构.
- * 在Archaeplastida中,初级塑来自单一的蓝藻细菌内共生,与复杂的塑不同.
研究的目的:
- * 总结关于藻类中复杂塑体的获取,进化和功能的知识.
- * 探索复杂的塑收购的进化途径和频率.
- *讨论细胞适应和内共生的后果,包括基因转移和光合作用损失.
主要方法:
- *对藻内共生现有科学文献的审查和综合.
- * 对不同真核细胞系的塑进化进行比较分析.
- *对内共生事件和基因转移的遗传和细胞证据的检查.
主要成果:
- *复杂的塑体在真核细胞系中独立地多次出现,特别是在绿色和红色藻类系中.
- *二级和高阶内共生是获得复杂塑体的常见机制,导致塑体的替代.
- *内共生涉及从内共生体到宿主的大规模基因转移和显著的细胞适应,通常导致光合作用能力的丧失.
结论:
- *复杂的塑是真核细胞之间频繁,独立的内共生事件的结果.
- * 获得复杂的塑体涉及复杂的遗传和细胞整合过程.
- *尽管具有光合作用优势,但许多具有复杂塑性质的藻类已经失去光合作用,突出显示了进化灵活性.
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