Niche adaptation strategies of different clades of comammox Nitrospira in the Yangtze Estuary
Niche adaptation strategies of different clades of comammox Nitrospira in the Yangtze Estuary
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长江口comammox Nitrospira不同分支的生态位适应策略
DOI：
10.1016/j.ibiod.2021.105286
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发表时间：
2021-10
影响因子：
4.8
通讯作者：
Han Ping
中科院分区：
文献类型：
--
作者：
Sun Dongyao;Zhao Mengyue;Tang Xiufeng;Liu Min;Hou Lijun;Zhao Qiang;Li Jun;Gu Ji-Dong;Han Ping
完全氨氧化剂（comammox）的发现改变了以前已知的两步硝化过程的传统观点。硝化螺菌是一种能独立氧化氨为硝酸盐的微生物，除海洋外，广泛存在于各种生态系统中。河口潮滩湿地是重要的海陆过渡带。因此，研究跨河口盐度梯度的硝化螺旋藻的物种动态，可以为了解其在该生态系统中的生态分布和生理潜力提供依据。硝化螺种在长江口广泛分布，但丰度低于典型的氨氧化菌。通过系统发育和群落结构分析，揭示了由盐度驱动的commammoxNitrospiragroups的明显分化。Nitrospiaclade A1主要分布在长江下游，对盐度的适应性较强，而A2则主要分布在长江上游低盐区。在先前定义的进化枝A2内，确定了一个新的亚群-进化枝A2.2。它占检索到的comammoxNitrospirase序列的19.2%，并显示出类似的来源和一致的生态位与分支A1。除盐度外，氨氮、pH和粒径也是影响硝化螺种生态位分化的重要环境因子。综合分析了长江口共栖硝化螺旋藻的多样性、丰度和群落结构，以及不同亚群的生态位分离。这对全球河口生态系统中的comammox的生理生态学研究具有重要意义。
The discovery of complete ammonia oxidizers (comammox) changed the conventional view of the previously known two-step process of nitrification. ComammoxNitrospirathat can independently oxidize ammonia to nitrate have been found existing in various ecosystems except the ocean. Estuary tidal flat wetlands are an important transition area between land and sea. Thus, studying the species dynamics of comammoxNitrospiraacross the estuarine salinity gradient can offer insights into their ecological distribution and physiological potential in this ecosystem. ComammoxNitrospiraspecies were widely distributed in the Yangtze Estuary, yet with abundance lower than canonical ammonia oxidizers. A distinct differentiation of comammoxNitrospiragroups driven by salinity was revealed by phylogenetic and community structure analyses. ComammoxNitrospiraclade A1 was mainly distributed in the downstream region of the Yangtze River indicating its high adaptation to salinity, while clade A2 was mostly detected in the upstream regions where salinity was low. Within the previously defined clade A2, a new subcluster-clade A2.2 was determined. It accounted for 19.2% of the retrieved comammoxNitrospirasequences from the samples, and showed similar sources and consistent niches with clade A1. In addition to salinity, ammonia, pH and particle size were also important environmental factors affecting niche differentiation of comammoxNitrospiraspecies. Taken together, we surveyed the diversity, abundance, and community structure of comammoxNitrospiraalong the Yangtze Estuary, alongside the niche separation of different subgroups. This shed light on the ecophysiology of comammox in global estuary ecosystems.
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长江口沉积物反硝化、厌氧氨氧化与硝化的耦合：重要性及控制因素
DOI：
10.1016/j.ecss.2019.02.043
发表时间：
2019-05
期刊：
Estuarine, Coastal and Shelf Science
影响因子：
--
作者：
Liu Cheng;Hou Lijun;Liu Min;Zheng Yanling;Yin Guoyu;Han Ping;Dong Hongpo;Gao Juan;Gao Dengzhou;Chang Yongkai;Zhang Zongxiao
通讯作者：
Zhang Zongxiao
影响因子：
64.8
作者：
van Kessel MA;Speth DR;Albertsen M;Nielsen PH;Op den Camp HJ;Kartal B;Jetten MS;Lücker S
通讯作者：
Lücker S
长江口北支滩涂及复垦农田土壤中Comammox Nitrospira的生态位分化
影响因子：
5.2
作者：
Wang X;Lu L;Zhou X;Tang X;Kuang L;Chen J;Shan J;Lu H;Qin H;Adams J;Wang B
通讯作者：
Wang B
影响因子：
5.2
作者：
Pjevac P;Schauberger C;Poghosyan L;Herbold CW;van Kessel MAHJ;Daebeler A;Steinberger M;Jetten MSM;Lücker S;Wagner M;Daims H
通讯作者：
Daims H
DOI：
--
发表时间：
2002
期刊：
--
影响因子：
--
作者：
T. Braak;F. Cateten;P. Šmilauer
通讯作者：
T. Braak;F. Cateten;P. Šmilauer