Elevated pCO2 alters the interaction patterns and functional potentials of rearing seawater microbiota,Environmental Pollution

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Elevated pCO2 alters the interaction patterns and functional potentials of rearing seawater microbiota
Environmental Pollution ( IF 7.6 ) Pub Date : 2021-06-18 , DOI: 10.1016/j.envpol.2021.117615
Weichuan Lin ₁ , Jiaqi Lu ₁ , Huaiying Yao ₂ , Zhibin Lu ₃ , Yimin He ₁ , Changkao Mu ₁ , Chunlin Wang ₁ , Ce Shi ₁ , Yangfang Ye ₁

Affiliation

Mean oceanic CO values have already risen and are expected to rise further on a global scale. Elevated CO (eCO) changes the bacterial community in seawater. However, the ecological association of seawater microbiota and related geochemical functions are largely unknown. We provide the first evidence that eCO alters the interaction patterns and functional potentials of microbiota in rearing seawater of the swimming crab, . Network analysis showed that eCO induced a simpler and more modular bacterial network in rearing seawater, with increased negative associations and distinct keystone taxa. Using the quantitative microbial element cycling method, nitrogen (N) and phosphorus (P) cycling genes exhibited the highest increase after one week of eCO stress and were significantly associated with keystone taxa. However, the functional potential of seawater bacteria was decoupled from their taxonomic composition and strongly coupled with eCO levels. The changed functional potential of seawater bacteria contributed to seawater N and P chemistry, which was highlighted by markedly decreased NH, NH-N, and PO-P levels and increased NO-N and NO-N levels. This study suggests that eCO alters the interaction patterns and functional potentials of seawater microbiota, which lead to the changes of seawater chemical parameters. Our findings provide new insights into the mechanisms underlying the effects of eCO on marine animals from the microbial ecological perspective.

中文翻译：

pCO2 升高会改变养殖海水微生物群的相互作用模式和功能潜力

海洋二氧化碳平均值已经上升，并且预计在全球范围内将进一步上升。 CO (eCO) 升高会改变海水中的细菌群落。然而，海水微生物群的生态关联和相关的地球化学功能在很大程度上尚不清楚。我们提供了第一个证据，证明 eCO 改变了梭子蟹养殖海水中微生物群的相互作用模式和功能潜力。网络分析表明，eCO 在养殖海水中诱导出更简单、更模块化的细菌网络，负关联增加，关键类群明显不同。使用定量微生物元素循环方法，氮（N）和磷（P）循环基因在eCO胁迫一周后表现出最高的增加，并且与关键类群显着相关。然而，海水细菌的功能潜力与其分类组成脱钩，并与 eCO 水平密切相关。海水细菌功能潜力的变化促进了海水氮和磷的化学变化，其中 NH、NH-N 和 PO-P 水平显着降低，NO-N 和 NO-N 水平显着增加。这项研究表明，eCO 改变了海水微生物群的相互作用模式和功能潜力，从而导致海水化学参数的变化。我们的研究结果从微生物生态学的角度为 eCO 对海洋动物影响的机制提供了新的见解。

更新日期：2021-06-18

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