High light boosts salinity stress-induced biosynthesis of astaxanthin and lipids in the green alga Chromochloris zofingiensis

Kou, Yaping; Liu, Meijing; Sun, Peilong; Dong, Zhaoqi; Liu, Jin

doi:10.1016/j.algal.2020.101976

Cited by 57 publications

(23 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bright light enhances salt stress-induced astaxanthin and lipid biosynthesis in the green alga Chromochloris zofingiensis [153]. The best condition for lipid and astaxanthin production in Haematococcus lacustris was high intensity light and nitrogen starvation [38].…”

Section: Simultaneous Use Of Light and Other Stressesmentioning

confidence: 99%

Influence of Light Conditions on Microalgae Growth and Content of Lipids, Carotenoids, and Fatty Acid Composition

Maltsev

Maltseva

Kulikovskiy

et al. 2021

Biology

214

View full text Add to dashboard Cite

Microalgae are a valuable natural resource for a variety of value-added products. The growth of microalgae is determined by the impact of many factors, but, from the point of view of the implementation of autotrophic growth, light is of primary importance. This work presents an overview of the influence of light conditions on the growth of microalgae, the content of lipids, carotenoids, and the composition of fatty acids in their biomass, taking into account parameters such as the intensity, duration of lighting, and use of rays of different spectral composition. The optimal light intensity for the growth of microalgae lies in the following range: 26−400 µmol photons m−2 s−1. An increase in light intensity leads to an activation of lipid synthesis. For maximum lipid productivity, various microalgae species and strains need lighting of different intensities: from 60 to 700 µmol photons m−2 s−1. Strong light preferentially increases the triacylglyceride content. The intensity of lighting has a regulating effect on the synthesis of fatty acids, carotenoids, including β-carotene, lutein and astaxanthin. In intense lighting conditions, saturated fatty acids usually accumulate, as well as monounsaturated ones, and the number of polyunsaturated fatty acids decreases. Red as well as blue LED lighting improves the biomass productivity of microalgae of various taxonomic groups. Changing the duration of the photoperiod, the use of pulsed light can stimulate microalgae growth, the production of lipids, and carotenoids. The simultaneous use of light and other stresses contributes to a stronger effect on the productivity of algae.

show abstract

Section: Simultaneous Use Of Light and Other Stressesmentioning

confidence: 99%

Influence of Light Conditions on Microalgae Growth and Content of Lipids, Carotenoids, and Fatty Acid Composition

Maltsev

Maltseva

Kulikovskiy

et al. 2021

Biology

214

View full text Add to dashboard Cite

show abstract

“…Nevertheless, the most popular astaxanthin producing algae, H. pluvialis and C. zofingiensis , showed different patterns in astaxanthin accumulation in response to fatty acids inhibition [ 36 , 51 ]. These two algae have been reported to accumulate significant amount of TAG and astaxanthin simultaneously in response to stress conditions [ 82 , 83 ]. Additionally, astaxanthin is predominantly accumulated in esterified form in these two algae and stored in TAG filled LBs which acts as a solvent for the synthesized astaxanthin.…”

Section: Astaxanthin Biosynthesis: Pathways Regulations and Distributionmentioning

confidence: 99%

Optimization of microbial cell factories for astaxanthin production: Biosynthesis and regulations, engineering strategies and fermentation optimization strategies

Basiony

Ouyang

Wang

et al. 2022

Synthetic and Systems Biotechnology

View full text Add to dashboard Cite

“…Algal astaxanthin synthesis is usually induced as a defense mechanism against environmental oxidative stress [2,5,6]. Various stress-inducing conditions, such as nutrient starvation [7,8], exposure to intense light [9,10], high temperatures [11,12], high salinity [13,14], and nanomaterial addition to culture [15], have been applied to increase the content and productivity of algal astaxanthin. Among them, nitrogen-nutrient depletion has been employed extensively for effective astaxanthin induction in H. pluvialis cultures [2,16].…”

Section: Introductionmentioning

confidence: 99%

Electric Stimulation of Astaxanthin Biosynthesis in Haematococcus pluvialis

et al. 2021

View full text Add to dashboard Cite

The green microalga Haematococcus pluvialis accumulates astaxanthin, a potent antioxidant pigment, as a defense mechanism against environmental stresses. In this study, we investigated the technical feasibility of a stress-based method for inducing astaxanthin biosynthesis in H. pluvialis using electric stimulation in a two-chamber bioelectrochemical system. When a cathodic (reduction) current of 3 mA (voltage: 2 V) was applied to H. pluvialis cells for two days, considerable lysis and breakage of algal cells were observed, possibly owing to the formation of excess reactive oxygen species at the cathode. Conversely, in the absence of cell breakage, the application of anodic (oxidation) current effectively stimulated astaxanthin biosynthesis at a voltage range of 2–6 V, whereas the same could not be induced in the untreated control. At an optimal voltage of 4 V (anodic current: 30 mA), the astaxanthin content in the cells electro-treated for 2 h was 36.9% higher than that in untreated cells. Our findings suggest that electric treatment can be used to improve astaxanthin production in H. pluvialis culture if bioelectrochemical parameters, such as electric strength and duration, are regulated properly.

show abstract

High light boosts salinity stress-induced biosynthesis of astaxanthin and lipids in the green alga Chromochloris zofingiensis

Cited by 57 publications

References 48 publications

Influence of Light Conditions on Microalgae Growth and Content of Lipids, Carotenoids, and Fatty Acid Composition

Influence of Light Conditions on Microalgae Growth and Content of Lipids, Carotenoids, and Fatty Acid Composition

Optimization of microbial cell factories for astaxanthin production: Biosynthesis and regulations, engineering strategies and fermentation optimization strategies

Electric Stimulation of Astaxanthin Biosynthesis in Haematococcus pluvialis

Contact Info

Product

Resources

About