Connecting thiamine availability to the microbial community composition in Chinook salmon spawning habitats of the Sacramento River basin.
Connecting thiamine availability to the microbial community composition in Chinook salmon spawning habitats of the Sacramento River basin.
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DOI：
10.1128/aem.01760-23
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发表时间：
2024-01-24
影响因子：
4.4
通讯作者：
中科院分区：
文献类型：
--
作者：
硫胺素缺乏综合症（TDC）是一个主要的新兴威胁，全球人口的文化和经济上重要的鲑鱼种群。鲑鱼卵和胚胎可以吸收外源硫胺素，有证据表明，底栖环境中的微生物群落可以产生大量的硫胺素。因此，我们假设，天然溶解池存在于地表水和河流栖息地，鲑鱼与TDC迁移，产卵，并开始他们的生活的潜流区硫胺素。为了研究溶解的硫胺素相关化合物（dTRCs）和它们的微生物来源之间的关系，我们确定了这些代谢物的浓度和微生物群落的组成在表面和低流沃茨的萨克拉门托河，加州及其支流。在这里，我们确定所有的dTRCs都存在于一系列至关重要的鲑鱼产卵栖息地的毫微微摩尔浓度。我们观察到，硫胺素浓度在萨克拉门托河系统的数量级低于海洋沃茨，表明这两个环境之间的硫胺素循环的实质性差异。我们的数据表明，潜流带可能是硫胺素的来源上覆地表水。dTRC浓度的时间变化，观察到最高浓度存在时，奇努克鲑鱼积极产卵。微生物类群的丰富度和dTRC浓度之间存在显着的相关性，特别是在潜流区，这将影响胚胎鲑鱼孵化的条件。总之，这些结果表明淡水栖息地的微生物群落和硫胺素的可用性产卵TDC影响加州中央谷奇努克鲑鱼之间的连接。太平洋鲑鱼是关键物种，对太平洋西北部土著人民具有相当大的经济重要性和不可估量的文化意义。硫胺素缺乏综合症最近被诊断为对从加州到阿拉斯加的多个鲑鱼种群的健康和稳定的新威胁。微生物生物合成是海洋和水生环境中硫胺素的主要来源。尽管如此重要，硫胺素的浓度和循环它的微生物群落的身份在很大程度上是未知的。在这里，我们调查微生物群落及其与硫胺素的关系，在加州的萨克拉门托河系统的奇努克鲑鱼产卵栖息地，以了解硫胺素的可用性如何影响鲑鱼患有硫胺素缺乏症复杂。
Thiamine deficiency complex (TDC) is a major emerging threat to global populations of culturally and economically important populations of salmonids. Salmonid eggs and embryos can assimilate exogenous thiamine, and evidence suggests that microbial communities in benthic environments can produce substantial amounts of thiamine. We therefore hypothesize that natural dissolved pools of thiamine exist in the surface water and hyporheic zones of riverine habitats where salmonids with TDC migrate, spawn, and begin their lives. To examine the relationship between dissolved thiamine-related compounds (dTRCs) and their microbial source, we determined the concentrations of these metabolites and the compositions of microbial communities in surface and hyporheic waters of the Sacramento River, California and its tributaries. Here we determine that all dTRCs are present in femto-picomolar concentrations in a range of critically important salmon spawning habitats. We observed that thiamine concentrations in the Sacramento River system are orders of magnitude lower than those of marine waters, indicating substantial differences in thiamine cycling between these two environments. Our data suggest that the hyporheic zone is likely the source of thiamine to the overlying surface water. Temporal variations in dTRC concentrations were observed where the highest concentrations existed when Chinook salmon were actively spawning. Significant correlations were seen between the richness of microbial taxa and dTRC concentrations, particularly in the hyporheic zone, which would influence the conditions where embryonic salmon incubate. Together, these results indicate a connection between microbial communities in freshwater habitats and the availability of thiamine to spawning TDC-impacted California Central Valley Chinook salmon. Pacific salmon are keystone species with considerable economic importance and immeasurable cultural significance to Pacific Northwest indigenous peoples. Thiamine deficiency complex has recently been diagnosed as an emerging threat to the health and stability of multiple populations of salmonids ranging from California to Alaska. Microbial biosynthesis is the major source of thiamine in marine and aquatic environments. Despite this importance, the concentrations of thiamine and the identities of the microbial communities that cycle it are largely unknown. Here we investigate microbial communities and their relationship to thiamine in Chinook salmon spawning habitats in California’s Sacramento River system to gain an understanding of how thiamine availability impacts salmonids suffering from thiamine deficiency complex.
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影响因子：
1.1
作者：
Fitzsimons, John D.;Honeyfield, Dale C.;Rush, Scott
通讯作者：
Rush, Scott
影响因子：
4.6
作者：
通讯作者：
--
影响因子：
1.4
作者：
Apprill, Amy;McNally, Sean;Weber, Laura
通讯作者：
Weber, Laura
影响因子：
2.3
作者：
Edwards KA;Tu-Maung N;Cheng K;Wang B;Baeumner AJ;Kraft CE
通讯作者：
Kraft CE
影响因子：
48
作者：
Callahan BJ;McMurdie PJ;Rosen MJ;Han AW;Johnson AJ;Holmes SP
通讯作者：
Holmes SP