Particulate polyphosphate and alkaline phosphatase activity across a latitudinal transect in the tropical Indian Ocean
Particulate polyphosphate and alkaline phosphatase activity across a latitudinal transect in the tropical Indian Ocean
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DOI：
10.1002/lno.10780
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发表时间：
2018-05-01
影响因子：
4.5
通讯作者：
Vinayachandran, P. N.
中科院分区：
文献类型：
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作者：
Martin, Patrick;Lauro, Federico M.;Vinayachandran, P. N.
多聚磷酸盐是微生物细胞的重要组成部分，在海洋磷的生态地球化学中起着重要作用。然而，polyP在海洋中很少被测量。在这里，我们提出的数据分布在热带印度洋的一个纬度样带的聚磷。聚P浓度（定量为合成聚P标准物的摩尔当量）和聚P与总颗粒磷（TPP）的比率沿着横断面在3-7 nmol eq. L-1（聚P浓度）和0.2-0.4 nmol eq. nmol（-1）（聚磷：TPP比），这是非常相似的北太平洋副热带环流报告的值。然而，与北太平洋不同的是，可溶性活性磷被耗尽到低浓度（
Polyphosphate (polyP) is an essential chemical constituent of microbial cells, and is hypothesized to play important roles in the marine biogeochemistry of phosphorus. However, polyP has only rarely been measured in the oceans. Here, we present data on the distribution of polyP across a latitudinal transect in the tropical Indian Ocean. PolyP concentrations (quantified as molar equivalents of a synthetic polyP standard) and ratios of polyP to total particulate phosphorus (TPP) along the transect ranged between 3-7 nmol eq. L-1 (polyP concentration) and 0.2-0.4 nmol eq. nmol(-1) (polyP : TPP ratio), which is very similar to values reported from the North Pacific Subtropical Gyre. Yet unlike in the North Pacific, soluble reactive phosphorus was depleted to low concentrations (