在Prochlorococcus种群中生产和交叉养酸盐
Paul M Berube1, Tyler J O'Keefe1, Anna Rasmussen1
1Department of Civil and Environmental Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts, USA.
mBio
|July 5, 2023
概括
一些Prochlorococcus细菌在酸盐上生长时释放酸盐,使营养物质可以共享. 这种交叉养在海洋种群中创造了代谢伙伴关系,影响了循环.
科学领域:
- 海洋微生物学 海洋微生物学
- 生物地质化学循环 生物地质化学循环
- 海洋学 海洋学 海洋学
背景情况:
- 菌是开放海洋中一个关键的光合作用细菌.
- 的可用性往往限制了植物浮游生物的生长.
- 一些Prochlorococcus菌株可以同化亚酸盐,但不能同化酸盐.
研究的目的:
- 调查Prochlorococcus中不完全的酸盐同化.
- 检查亚酸盐的积累和释放情况.
- 在Prochlorococcus种群中探索代谢交叉养.
主要方法:
- 培养的Prochlorococcus和Synechococcus菌株使用酸盐作为源.
- 测量了细胞外酸盐的积累.
- 已建立的Prochlorococcus菌株共同培养,具有互补的同化能力.
主要成果:
- 在酸盐上生长时,两个Prochlorococcus菌株 (MIT0917,SB) 积累了外部酸盐.
- MIT0917释放了20-30%的运输酸盐作为酸盐.
- MIT0917和酸盐同化菌株 (MIT1214) 的共同培养在酸盐上壮成长,MIT1214消耗释放的酸盐.
结论:
- 某些Prochlorococcus菌株表现出不完全的酸盐同化,释放出酸盐.
- 酸盐交叉养可以在Prochlorococcus菌株之间建立代谢依赖关系.
- 这些相互作用可能会影响海洋营养梯度和循环.
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