Extremely halophilic archaeal communities are resilient to short-term entombment in halite.
Extremely halophilic archaeal communities are resilient to short-term entombment in halite.
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DOI：
10.1111/1462-2920.14913
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发表时间：
2021-07
影响因子：
5.1
通讯作者：
McGenity TJ
中科院分区：
文献类型：
--
作者：
Huby TJC;Clark DR;McKew BA;McGenity TJ
一些盐古菌通过埋藏在形成岩盐晶体的盐水包裹体中来避免蒸发盐水中存在的恶劣条件，其中盐古菌的一个子集在地质时期存活下来。然而，石盐埋藏古菌群落结构的变化仍然知之甚少。因此，我们使用高通量测序分析了从特拉帕尼盐场（西西里）收集的原位高盐卤水中的古菌群落及其在21周内卤水与实验室生长的岩盐中的演替变化。盐古菌占优势，占古菌群落的95%以上。出乎意料的是，21周后的OTU丰富的社区是无法区分的母卤水和整体古菌丰度的石盐没有明显的时间趋势。此外，埋藏的持续时间比岩盐来源的母卤水在确定岩盐埋藏群落中大多数属的群落组成和相对丰度方面不那么重要。这些结果表明，石盐埋藏的古菌群落对长达21周的埋藏持续时间具有弹性，并且埋藏在石盐中可能是接近完整的盐古菌群落的有效生存策略。此外，在古代岩盐中观察到的“岩盐专家”的主导地位必须在几年内发生，而不是几个月，暗示了这种环境中的长期演替动态。
Some haloarchaea avoid the harsh conditions present in evaporating brines by entombment in brine inclusions within forming halite crystals, where a subset of haloarchaea survives over geological time. However, shifts in the community structure of halite‐entombed archaeal communities remain poorly understood. Therefore, we analysed archaeal communities from in situ hypersaline brines collected from Trapani saltern (Sicily) and their successional changes in brines versus laboratory‐grown halite over 21 weeks, using high‐throughput sequencing. Haloarchaea were dominant, comprising >95% of the archaeal community. Unexpectedly, the OTU richness of the communities after 21 weeks was indistinguishable from the parent brine and overall archaeal abundance in halite showed no clear temporal trends. Furthermore, the duration of entombment was less important than the parent brine from which the halite derived in determining the community composition and relative abundances of most genera in halite‐entombed communities. These results show that halite‐entombed archaeal communities are resilient to entombment durations of up to 21 weeks, and that entombment in halite may be an effective survival strategy for near complete communities of haloarchaea. Additionally, the dominance of ‘halite specialists’ observed in ancient halite must occur over periods of years, rather than months, hinting at long‐term successional dynamics in this environment.
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影响因子：
4.4
作者：
Griffiths, RI;Whiteley, AS;Bailey, MJ
通讯作者：
Bailey, MJ
影响因子：
6.6
作者：
Baselga, Andres;Orme, C. David L.
通讯作者：
Orme, C. David L.
影响因子：
5.1
作者：
Gramain, Audrey;Chong Diaz, Guillermo;McGenity, Terry J.
通讯作者：
McGenity, Terry J.
影响因子：
5.1
作者：
Aslam, Shazia N.;Dumbrell, Alex J.;McGenity, Terry J.
通讯作者：
McGenity, Terry J.
DOI：
10.1099/ijs.0.64690-0
发表时间：
2007-02-01
影响因子：
2.8
作者：
Burns, David G.;Janssen, Peter H.;Dyall-Smith, Mike L.
通讯作者：
Dyall-Smith, Mike L.