Nutrient-mediated changes in growth, biochemical composition, and biosilica deposition in <italic style="font-style: italic">Cyclotella cryptica</italic>

Yuting YU; Yan SUN; Yuhang LI; Zhengfeng ZHU; Lin ZHANG; Jian LI; Spiros N. AGATHOS; Chengxu ZHOU; Jichang HAN

doi:10.1007/s00343-025-4208-z

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Nutrient-mediated changes in growth, biochemical composition, and biosilica deposition in Cyclotella cryptica

Biology | Updated：2025-10-16

- Nutrient-mediated changes in growth, biochemical composition, and biosilica deposition in Cyclotella cryptica
- Journal of Oceanology and Limnology Vol. 43, Issue 5, Pages: 1567-1586(2025)
- Affiliations：
  
  1.College of Food Science and Engineering, Ningbo University, Ningbo 315832, China
  2.Laboratory of Marine Organism Taxonomy and Phylogeny, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
  3.Key Laboratory of Applied Marine Biotechnology, Ministry of Education of China, Ningbo University, Ningbo 315832, China
  4.School of Biological and Chemical Engineering, Panzhihua University, Panzhihua 617000, China
  5.Earth Life Institute, Bioengineering Laboratory, Catholic University of Louvain, Louvain-La-Neuve 1348, Belgium
  6.Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao 266000, China
- Author bio：
  
  hanjichang@nbu.edu.cn
- Funds：
- DOI：10.1007/s00343-025-4208-z
  CLC：
- Received：03 August 2024，
  
  Accepted：10 October 2024，
  
  Online First：04 November 2024，
  
  Published：01 September 2025
- Accepted：
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YU Yuting,SUN Yan,LI Yuhang,et al.Nutrient-mediated changes in growth, biochemical composition, and biosilica deposition in ,Cyclotella cryptica[J].Journal of Oceanology and Limnology,2025,43(05):1567-1586.
DOI：

YU Yuting,SUN Yan,LI Yuhang,et al.Nutrient-mediated changes in growth, biochemical composition, and biosilica deposition in ,Cyclotella cryptica[J].Journal of Oceanology and Limnology,2025,43(05):1567-1586. DOI： 10.1007/s00343-025-4208-z.

摘要

Abstract

Cyclotella cryptica

a model diatom known for its robust adaptability to variable salinity and temperature conditions

is a promising candidate for large-scale biotechnological applications. Nutrient availability

particularly nitrogen and phosphorus

plays a crucial role in the metabolic activities of microalgae

influencing its industrial utility. Exploring the relationship between these essential nutrients and both the yield and biochemical composition of this microalga is crucial for optimizing cultivation strategies. However

research focusing on the effects of nitrogen and phosphorus on

cryptica

remains limited. We investigated the impacts of varying concentrations of nitrate (0.25–3.96 mmol/L) and phosphate (14.4–229.6 μmol/L) on

cryptica

culture by analyzing its growth performance

photosynthetic activity

biochemical composition

and biosilica deposition. Results indicate that

cryptica

exhibited enhanced growth

photosynthetic efficiency

and carotenoid production under higher nutrient concentrations. However

the effects of nitrate on macronutrients composition and fatty acids profile differed from those of phosphate. Specifically

increased nitrate levels resulted in higher concentrations of polyunsaturated fatty acids (PUFAs) at the expense of saturated fatty acids (SFAs)

while increased phosphate levels were associated with increased PUFAs and reduced monounsaturated fatty acids (MUFAs). Additionally

biosilica deposition was weakened by elevated nitrate but enhanced by increased phosphate levels. This study improved our understanding of nutrient-mediated regulatory mechanisms in diatoms and contributed valuable data to the broader field of algal biotechnology. Moreover

these findings are expected to advance the development of tailored nutrient management strategies

thereby enhancing the industrial potential of

cryptica

关键词

Keywords

references

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Spiros N. AGATHOS

Hongbin LIU

Ke PAN

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Earth & Life Institute, Bioengineering Laboratory, Catholic University of Louvain, Louvain- -Neuve

Hong Kong Branch of Southern Marine Science & Engineering Guangdong Laboratory, The Hong Kong University of Science and Technology

Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University

Department of Ocean Science, The Hong Kong University of Science and Technology

SZU‐HKUST Joint PhD Program in Marine Environmental Science, Shenzhen University

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Nutrient-mediated changes in growth, biochemical composition, and biosilica deposition in Cyclotella cryptica

DOI：10.1007/s00343-025-4208-z

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