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<p><i>Caulerpa sertularioides</i> is a globally common species that exhibits invasiveness in non-native regions. Although it is distributed in China and poses potential invasion risks, it has rarely been reported. The thallus of <i>C. sertularioides</i> contains a variety of bioactive compounds, including polysaccharides, amino acids, vitamins, caulerpin, and caulerpicin, which endow it with high production value in food, medicine, and other fields. To investigate the effects of environmental factors on its growth, we measured the growth performance (the specific growth rate, SGR) and photosynthetic physiology (the maximum photosynthetic efficiency, <i>F</i><sub>v</sub>/<i>F</i><sub>m</sub>) of <i>C. sertularioides</i> under different salinities (20–40) and temperatures (20–30 °C) using response surface method (RSM) and central composite design (CCD). Results show that the highest SGR and maximum <i>F</i><sub>v</sub>/<i>F</i><sub>m</sub> in single-factor experiment occurred at 30 and 27.5 °C, while in two-factor experiment, the optimal conditions were 29.78 and 26.30 °C, under which the SGR reached 5.37% and the <i>F</i><sub>v</sub>/<i>F</i><sub>m</sub> reached 0.74. Therefore, RSM and CCD were ideal tools to elucidate the environmental adaptation and cultivation of macroalgae and to assess potential environmental hazards, jointly and precisely. This study offered novel methodologies and theoretical insights with accurate data to help the cultivation and invasion risk prediction of <i>C. sertularioides</i> in China and the world.</p>

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Central composite design in response surface method revealed the effects of environmental factors on Caulerpa sertularioides growth

  • 期刊论文

  • 发表日期：

    2026年1月26日

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  • Lanping Ding,
  • Jie Chen,
  • Yue Chu,
  • Yang Dai,
  • Yanguang Zhong,
  • Chang Sun,
  • Meina Chen,
  • Yuan Gao,
  • Bingxin Huang

摘要

Caulerpa sertularioides is a globally common species that exhibits invasiveness in non-native regions. Although it is distributed in China and poses potential invasion risks, it has rarely been reported. The thallus of C. sertularioides contains a variety of bioactive compounds, including polysaccharides, amino acids, vitamins, caulerpin, and caulerpicin, which endow it with high production value in food, medicine, and other fields. To investigate the effects of environmental factors on its growth, we measured the growth performance (the specific growth rate, SGR) and photosynthetic physiology (the maximum photosynthetic efficiency, Fv/Fm) of C. sertularioides under different salinities (20–40) and temperatures (20–30 °C) using response surface method (RSM) and central composite design (CCD). Results show that the highest SGR and maximum Fv/Fm in single-factor experiment occurred at 30 and 27.5 °C, while in two-factor experiment, the optimal conditions were 29.78 and 26.30 °C, under which the SGR reached 5.37% and the Fv/Fm reached 0.74. Therefore, RSM and CCD were ideal tools to elucidate the environmental adaptation and cultivation of macroalgae and to assess potential environmental hazards, jointly and precisely. This study offered novel methodologies and theoretical insights with accurate data to help the cultivation and invasion risk prediction of C. sertularioides in China and the world.