Nutrient temperature and light stress alter phosphorus and carbon forms in culture-grown algae
Nutrient temperature and light stress alter phosphorus and carbon forms in culture-grown algae
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DOI：
10.1016/j.marchem.2010.03.002
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发表时间：
2010-08-20
期刊：
影响因子：
3
通讯作者：
Paytan, Adina
中科院分区：
文献类型：
--
作者：
Cade-Menun, Barbara J.;Paytan, Adina
海水中的颗粒有机物（POM）含有广泛的化合物，其中许多直接来自浮游植物。浮游植物可能会改变其生物化学特征以应对压力，这反过来又改变了POM中碳（C）和磷（P）化合物的相对丰度。利用C-13 CPMAS和P-31 NMR波谱技术研究了光照、温度和磷营养胁迫下培养的藻类中磷和碳的变化。在C型中，脂质和蛋白质与光照强度显著相关，而脂质在高温下显著增加。低磷营养显著改变了C-13 NMR谱，但没有改变模型C形式。光、温胁迫对磷素形态的影响不大。低磷和高磷营养改变了C：P和N：P比值。低磷营养并没有改变磷的形态。高磷营养增加焦磷酸盐，表明奢侈的磷消费。多聚磷酸盐没有出现相关的光和温度胁迫，因为没有显着的变化，在培养的藻类在光和温度胁迫下观察到。皇冠版权所有（C）2010由爱思唯尔B. V.出版保留所有权利。
Particulate organic matter (POM) in seawater contains a wide range of chemical compounds, many of which come directly from phytoplankton. Phytoplankton may alter their biochemical characteristics in response to stress, which in turn alters the relative abundance of carbon (C) and phosphorus (P) compounds in the POM. The objective of this research was to examine changes in the P and C forms of algae cultured under light intensity, temperature and P nutrition stress, using C-13 CPMAS and P-31 NMR spectroscopy. Of the C forms, lipids and protein were significantly related to light intensity, while lipids were significantly increased at high temperatures. Low-P nutrition significantly altered C-13 NMR spectra, but did not alter modeled C forms. There were few changes in P forms with light and temperature stress. Low- and high-P nutrition altered C:P and N:P ratios. Low-P nutrition did not alter P forms. High-P nutrition increased pyrophosphate, indicating luxury P consumption. Polyphosphates did not appear to be related to light and temperature stress, because no significant changes in polyphosphates were observed in cultured algae under light and temperature stress. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.