Effect of Phytohormone Kinetin on Cell Density, Photosynthetic Pigments, Antioxidant Enzymes, and Fatty Acid Composition of the Microalgae Tetraselmis suecica

IF 1.9 4区农林科学 Q2 FISHERIES Aquaculture Research Pub Date : 2023-07-22 DOI:10.1155/2023/5967771

Tahereh Asghari, N. Ahmadifard, M. Nikoo

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Abstract

The effects of phytohormone Kinetin on cell density, photosynthetic pigments, antioxidant enzymes, and fatty acids composition of the microalgae Tetraselmis suecica were investigated. T. suecica was treated with different concentrations (0, 5, 10, 15, 20, and 25 mg/L) of Kinetin at optimal growth conditions (salinity 28 g/L, temperature 25°C, and 24 hr photoperiod). Results indicated an increase in cell density in all treatments compared to the control; however, it was not significant, except for the treatment, 15 mg/L ( p < 0.05 ). The content of photosynthetic pigments and the activities of catalase and superoxide dismutase, measured after 10 days, significantly increased in the presence of Kinetin ( p < 0.05 ). Total n-3 fatty acid was significantly higher at 25 mg/L of Kinetin. At 15 mg/L, arachidonic acid (ARA) and eicosapentaenoic acid (EPA) were significantly higher compared to the control ( p < 0.05 ). Therefore, Kinetin could be useful for the production of the microalgae Tetraselmis suecica to increase growth, chemical composition, and antioxidant enzyme activity.

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植物激素激动素对海藻微藻细胞密度、光合色素、抗氧化酶和脂肪酸组成的影响

研究了植物激素动素对水四藻细胞密度、光合色素、抗氧化酶和脂肪酸组成的影响。在最佳生长条件(盐度28 g/L，温度25℃，光周期24 h)下，用不同浓度(0、5、10、15、20和25 mg/L)的Kinetin处理水蛭(T. suecica)。结果表明，与对照组相比，所有处理的细胞密度均有所增加;除处理组为15 mg/L外，其余均无统计学意义(p < 0.05)。10 d后测定的光合色素含量、过氧化氢酶和超氧化物歧化酶活性在Kinetin的作用下显著升高(p < 0.05)。在25 mg/L的Kinetin中，总n-3脂肪酸显著升高。15 mg/L时花生四烯酸(ARA)和二十碳五烯酸(EPA)显著高于对照组(p < 0.05)。因此，Kinetin可以用于微藻的生产，以促进生长，化学成分和抗氧化酶活性。

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来源期刊

Aquaculture Research 农林科学-渔业

CiteScore

4.60

自引率

5.00%

发文量

464

审稿时长

5.3 months

期刊介绍： International in perspective, Aquaculture Research is published 12 times a year and specifically addresses research and reference needs of all working and studying within the many varied areas of aquaculture. The Journal regularly publishes papers on applied or scientific research relevant to freshwater, brackish, and marine aquaculture. It covers all aquatic organisms, floristic and faunistic, related directly or indirectly to human consumption. The journal also includes review articles, short communications and technical papers. Young scientists are particularly encouraged to submit short communications based on their own research.