Laboratoire PROTEE-EBMA (EA 3819), Université de Toulon, CS 60584, 83041 Toulon Cedex 9, France.
Mar Pollut Bull. 2017 Apr 15;117(1-2):264-273. doi: 10.1016/j.marpolbul.2016.11.037. Epub 2017 Feb 8.
The particulate material was fractionated into 5 size classes (>90μ, 50-90μ, 6-50μ, 1-6μ, and <1μ). DOP was analysed as easily (DOPh, DOPpa) and less easily hydrolysable compounds (DOPox). Based on Vmax, 94% of the high affinity AP activity was due to <50μ cells and 77% to <1μ cells. 83% of the low affinity activity was due to >90μ cells. The high affinity activities were negatively correlated with DOP for the <50μ classes. These correlations came mostly from DOPox. They were more significant when NO+NO concentrations were high, when DIP concentrations were low and when N/P ratio was >10. At lower N/P ratios, AP was more significantly correlated with DIP. The low affinity activities showed significant negative correlation with DIP and with DOP and DOPox for the >90μ class. The inhibition of AP activities by DOPox may originate from stable compounds interfering with DIP for the control of AP synthesis.
将颗粒物质分为 5 个大小类别（>90μm、50-90μm、6-50μm、1-6μm 和 <1μm）。DOP 被分析为易（DOPh、DOPpa）和较难水解的化合物（DOPox）。基于 Vmax，94%的高亲和力 AP 活性来自于<50μm 的细胞，77%来自于<1μm 的细胞。83%的低亲和力活性来自于>90μm 的细胞。高亲和力活性与<50μm 类别的 DOP 呈负相关。这些相关性主要来自 DOPox。当 NO+NO 浓度较高、DIP 浓度较低且 N/P 比>10 时，相关性更为显著。在较低的 N/P 比下，AP 与 DIP 的相关性更为显著。低亲和力活性与 DIP 以及>90μm 类别的 DOP 和 DOPox 呈显著负相关。DOPox 对 AP 活性的抑制可能源于稳定化合物干扰 DIP，从而控制 AP 合成。
