一种互惠细菌从一个对手手中拯救了一种绿色藻类
David Carrasco Flores1, Vivien Hotter1, Trang Vuong1
1Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, General Botany, Friedrich Schiller University Jena, Jena 07743, Germany.
概括
细菌Mycetocola lacteus可以保护微藻Chlamydomonas reinhardtii免受杀菌性Pseudomonas蛋白质的侵害. 乳腺菌中和了杀藻化合物,使藻类能够存活和运动.
科学领域:
- 微生物学和微生物生态学
- 藻类生物学和共生关系
- 自然产品化学 自然产品化学
背景情况:
- 微藻是重要的初级生产者,与细菌形成复杂的相互作用.
- 众所周知,Pseudomonas protegens对Chlamydomonas reinhardtii具有杀菌作用,通过分泌的化合物引起脱和溶解.
- 了解这些微生物相互作用对于生态系统动态至关重要.
研究的目的:
- 为了研究Mycetocola lacteus和Chlamydomonas reinhardtii之间的相互作用.
- 确定M. lacteus在含有杀藻剂P. protegens.三方培养中的作用.
- 阐明M. lacteus保护藻类的机制.
主要方法:
- 在各种组合中培养微藻和细菌 (单种植,共同种植,三方种植).
- 合成天然产品化学和高分辨率质谱测量以识别细菌化合物.
- 使用藻类Ca2+记者线来监测细胞对细菌相互作用的反应.
主要成果:
- Mycetocola lacteus与Chlamydomonas reinhardtii建立了相互的关系,增强了藻类的生长.
- 乳腺菌保护C. reinhardtii免受P.protegens的侵害,通过分裂杀菌性循环脂.
- 由M.lacteus产生的线性化化合物不会破坏藻类平衡,防止防鞭并促进生存.
结论:
- 乳球菌 (Mycetocola lacteus) 起到助手细菌的作用,从杀菌细菌的攻击中拯救了克拉米多莫纳斯 (Chlamydomonas reinhardtii).
- 保护机制涉及到杀菌性脂的酶性失活,保持藻类的运动性和生存.
- 这些发现突出了微生物群落中发生的复杂的共生关系和化学战.
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