Semi-empirical modeling of microalgae photosynthesis in different acclimation states - Application to N. gaditana.

Semi-empirical modeling of microalgae photosynthesis in different acclimation states - Application to N. gaditana.
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不同驯化状态下微藻光合作用的半经验模型 - 在 N. gaditana 中的应用。

DOI:
10.1016/j.jbiotec.2017.08.002
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发表时间:
2017
影响因子:
4.1
通讯作者:
Bernardi A
Bernardi A
中科院分区:
工程技术3区
文献类型:
--
作者:
Bernardi A

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能够准确预测微藻在可变光照条件下的光合生产力的数学模型的发展对于大规模生产系统的发展至关重要。光适应过程在室外培养系统中特别重要,由此光照度的季节变化可以极大地影响微藻生长。本文提出了一个动态模型,捕捉光驯化对光合生产的影响。它建立在一个现有的半经验模型描述的过程中的光生产,光调节和光抑制通过引入驯化规则的关键参数。该模型是针对一个数据集,包括脉冲幅度调制荧光,光合作用速率,和天线尺寸测量的微藻Nannochloropsis gaditanain几个驯化状态进行校准。结果表明,校准模型是能够准确预测的荧光和呼吸测定数据,无论是在插值和外推。
The development of mathematical models capable of accurate predictions of the photosynthetic productivity of microalgae under variable light conditions is paramount to the development of large-scale production systems. The process of photoacclimation is particularly important in outdoor cultivation systems, whereby seasonal variation of the light irradiance can greatly influence microalgae growth. This paper presents a dynamic model that captures the effect of photoacclimation on the photosynthetic production. It builds upon an existing semi-empirical model describing the processes of photoproduction, photoregulation and photoinhibition via the introduction of acclimation rules for key parameters. The model is calibrated against a dataset comprising pulsed amplitude modulation fluorescence, photosynthesis rate, and antenna size measurements for the microalgaNannochloropsis gaditanain several acclimation states. It is shown that the calibrated model is capable of accurate predictions of fluorescence and respirometry data, both in interpolation and in extrapolation.
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