内菌Bacillus tequilensis通过调节宿主细胞代谢来改善微藻Haematococcus lacustris的生长
Min Seo Jeon1, Sang-Il Han1, Joon-Woo Ahn1
1Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 56212, Republic of Korea.
Bioresource technology
|July 24, 2023
概括
一种新发现的内共生细菌,Bacillus tequilensis,增强了Hematococcus lacustris的生长和阿斯塔克桑的产生. 这种共生关系促进了微藻代谢,并延迟了色素的降解.
科学领域:
- 微生物学 微生物学
- 生理学生理学是指生理学
- 生物技术是生物技术.
背景情况:
- 微藻类,如血球球菌 (Haematococcus lacustris) 是有价值的生产高价值的化合物,如阿斯塔克桑丁.
- 内共生关系可以显著影响宿主生物体的生理和新陈代谢.
研究的目的:
- 为了识别和描述Haematococcus lacustris中的内共生细菌.
- 为了优化Bacillus tequilensis和H. lacustris之间的共生条件.
- 为了研究B. tequilensis对H. lacustris.的代谢影响.
主要方法:
- 16S rRNA基因测序用于细菌识别.
- 显微镜以确认细菌的细胞内存在.
- 培养实验以确定最佳的共生比率和生长阶段.
- 对H. lacustris生物质和颜料进行生物化学分析.
主要成果:
- 德基菌被确定为H. lacustris. 的一个内共生体.
- 优化条件导致H. lacustris细胞密度,干重量,叶绿素和素含量显著增加.
- 脂肪酸含量增加了1.99倍,氨基酸和核酸代谢升级.
- 在H. lacustris和B. tequilensis中检测到独特的化合物,muramic和phenylacetic酸,并且色素降解被延迟.
结论:
- 德基菌 (Bacillus tequilensis) 作为一种有益的内生体,对黑马球菌 (Haematococcus lacustris) 起到有益的作用.
- 这种共生增强了微藻的生长,阿斯塔克桑的积累和代谢途径.
- 这一发现为改善微藻种植和生物技术应用开辟了新的途径.
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