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[转载]Science:人的确就是人和微生物的超级共生体?(2017.1.1)

已有 371 次阅读 2022-6-28 14:48 |系统分类:科研笔记|文章来源:转载

Science:人的确就是人和微生物的超级共生体?

创作:热心肠先生 审核:热心肠先生2017年01月01日

  • Moeller等人的研究清晰地表明,在过去1500万年间,肠道细菌与人科动物协同种化;

  • 研究者比较了人类、黑猩猩、倭黑猩猩、大猩猩粪便中拟杆菌科和双歧杆菌科特定株细菌的gyrB基因;

  • 除了灵长类动物间非常稀有的共生转移,比较主要细菌谱系的gyrB基因的种系发生,揭示它们与类人猿种系发生基本相符;

  • 肠道细菌并不是简单地从环境获取,而是在数百万年间与人科动物共进化,并塑造我们的免疫系统和发育。


https://www.mr-gut.cn/papers/read/1032900396


关键字

进化 进化谱系 大猩猩 倭黑猩猩 黑猩猩 拟杆菌 双歧杆菌 协同进化 协同种化非洲猿 共进化 Julia A Segre

延伸阅读本研究的原文信息和链接出处,以及相关解读和评论文章。欢迎读者朋友们推荐!

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Science[IF:47.728]

Hominid superorganisms

人科动物的超级生物体

10.1126/science.aag2788

2016-07-22, Editorial Material

Abstract:收起
Mutualistic symbiotic relationships are those in which both species benefit; for example, the vivid colors of coral reefs come from symbiotic algae that provide their living coral hosts with nutrients and oxygen through photosynthesis in exchange for protection. A similar mutualistic relationship exists between gut-dwelling bacteria and their animal hosts (1). It remains unclear, however, to what degree symbiosis has shaped host-microbial interactions and coevolution. On page 380 of this issue, Moeller et al. show that gut bacterial strains cospeciated with hominids (apes and humans) over the past 15 million years (2). These findings set the stage for exploring the evolutionary processes that underlie the symbiotic relationship between hominids and their gut-dwelling microbes.

First Authors:  Julia A Segre

Correspondence Authors:  Julia A Segre

All Authors:  Julia A Segre,Nick Salafsky


https://pubmed.ncbi.nlm.nih.gov/27463659/

Science

2016 Jul 22;353(6297):350-1.

 doi: 10.1126/science.aag2788.

EVOLUTION. Hominid superorganisms

Julia A Segre 1Nick Salafsky 2

Affiliations expand

No abstract available


https://pubmed.ncbi.nlm.nih.gov/27463672/

2016 Jul 22;353(6297):380-2.

 doi: 10.1126/science.aaf3951.

Cospeciation of gut microbiota with hominids

Andrew H Moeller 1Alejandro Caro-Quintero 2Deus Mjungu 3Alexander V Georgiev 4Elizabeth V Lonsdorf 5Martin N Muller 6Anne E Pusey 7Martine Peeters 8Beatrice H Hahn 9Howard Ochman 10

Affiliations expand

Free PMC article

Abstract

The evolutionary origins of the bacterial lineages that populate the human gut are unknown. Here we show that multiple lineages of the predominant bacterial taxa in the gut arose via cospeciation with humans, chimpanzees, bonobos, and gorillas over the past 15 million years. Analyses of strain-level bacterial diversity within hominid gut microbiomes revealed that clades of Bacteroidaceae and Bifidobacteriaceae have been maintained exclusively within host lineages across hundreds of thousands of host generations. Divergence times of these cospeciating gut bacteria are congruent with those of hominids, indicating that nuclear, mitochondrial, and gut bacterial genomes diversified in concert during hominid evolution. This study identifies human gut bacteria descended from ancient symbionts that speciated simultaneously with humans and the African apes.




https://blog.sciencenet.cn/blog-40692-1344943.html

上一篇:[转载]"共生体":我们的心情由微生物做主?(2016-04-11)
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