Cell damage repair mechanism in a desert green algae Chlorella sp. against UV-B radiation

Wang, Bo; Ye, Tong; Li, Caiyan; Li, Xiaoyan; Chen, Lanzhou; Wang, Gaohong

doi:10.1016/j.ecoenv.2022.113916

Cited by 16 publications

(7 citation statements)

References 95 publications

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“…UV light affects the photosynthetic rate of algal cells by impacting the light reactions in photosynthesis. This further confirms that Photosystem II is the most sensitive to UV radiation and suffers the most severe photoinhibition [ 37 , 38 ]. The cytochrome b6/f complex plays a central role in oxygen photosynthesis, linking electron transfer between photosystems I and II and converting light energy into a transmembrane proton gradient for ATP synthesis [ 39 ].…”

Section: Discussionsupporting

confidence: 64%

Integrated Physiologic and Proteomic Analyses Reveal the Molecular Mechanism of Navicula sp. in Response to Ultraviolet Irradiation Stress

Gong,

Pan,

Meng

et al. 2024

IJMS

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With the continuous development of space station construction, space ecosystem research has attracted increasing attention. However, the complicated responses of different candidate plants and algae to radiation stress remain unclear. The present study, using integrated physiologic and proteomic analyses, was carried out to reveal the molecular mechanism of Navicula sp. in response to ultraviolet (UV) irradiation stress. Under 12~24 h of high-dose UV irradiation conditions, the contents of chlorophyll and soluble proteins in Navicula sp. cells were significantly higher than those in the control and 4~8 h of low-dose UV irradiation groups. The activity of catalase (CAT) increased with the extension of irradiation time, and the activity of superoxide dismutase (SOD) decreased first and then increased. Furthermore, differential volcano plot analysis of the proteomic data of Navicula sp. samples found only one protein with a significant difference. Differential protein GO analysis unveiled that UV irradiation can activate the antioxidant system of Navicula sp. and further impact photosynthesis by affecting the photoreaction and chlorophyll synthesis of Navicula sp. The most significant differences in KEGG pathway analysis were also associated with photosynthesis. The above results indicate that Navicula sp. has good UV radiation resistance ability by regulating its photosynthetic pigment content, photosynthetic activity, and antioxidant system, making it a potential candidate for the future development of space ecosystems.

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Section: Discussionsupporting

confidence: 64%

Integrated Physiologic and Proteomic Analyses Reveal the Molecular Mechanism of Navicula sp. in Response to Ultraviolet Irradiation Stress

Gong,

Pan,

Meng

et al. 2024

IJMS

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“…Conversely, increasing the UV-B exposure to 18 h resulted in inhibitory effects on photosynthetic pigment content; however, these levels were similar to those in cells exposed to 12 h UV-B. It has been reported that UV-B may have a harmful impact on photosynthetic pigments due to their photobleaching or biosynthesis inhibition and, thus, leading to a decrease in photosynthetic performance [ 13 , 39 ]. On the other hand, UV-B-induced photoinhibition, reflected in the decrease in F v / F m , may be ameliorated by prior UV-B acclimation [ 16 ].…”

Section: Discussionmentioning

confidence: 94%

Exploring the Physiological Multiplicity of Native Microalgae from the Ecuadorian Highland, Italian Lowland and Indoor Locations in Response to UV-B

Reyes

Chiellini

Barozzi

et al. 2023

IJMS

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The differential effects of UV-B on the inhibition or activation of protective mechanisms to maintain cells photosynthetically active were investigated in native microalgae. Four strains were used, including two Chlorella sorokiniana strains, F4 and LG1, isolated from a Mediterranean inland swamp and a recycled cigarette butt’s substrate, respectively, and two isolates from an Ecuadorian highland lake related to Pectinodesmus pectinatus (PEC) and Ettlia pseudoalveolaris (ETI). Monocultures were exposed to acute UV-B (1.7 W m−2) over 18 h under controlled conditions. UV-B-untreated microalgae were used as the control. Comparative physiological responses, including photosynthetic pigments, non-enzymatic antioxidants, and chlorophyll a fluorescence, were evaluated at specific time points. Results showed that UV-B significantly compromised all the physiological parameters in F4, thereby resulting in the most UV-B-sensitive strain. Contrarily, UV-B exposure did not lead to changes in the PEC physiological traits, resulting in the best UV-B-resistant strain. This could be attributed to the acclimation to high light habitat, where maintaining a constitutive phenotype (at the photosynthetic level) is strategically advantageous. Differently, LG1 and ETI at 12 h of UV-B exposure showed different UV-B responses, which is probably related to acclimation, where in LG1, the pigments were recovered, and the antioxidants were still functioning, while in ETI, the accumulation of pigments and antioxidants was increased to avoid further photodamage. Consequently, the prolonged exposure in LG1 and ETI resulted in species-specific metabolic regulation (e.g., non-enzymatic antioxidants) in order to constrain full photoinhibition under acute UV-B.

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“…Caspase-3 activity was reduced in CDP-treated cells after 12 h. CDP protects against UVC-induced cytotoxicity by inhibiting caspase-3 activity and decreasing the levels of phosphorylated FADD and cleaved PARP-1. Not only UVC-induced skin cells but UVB-induced skin cells were also studied, and it was shown that CDP suppresses UVB-induced MMP-1 expression in skin fibroblasts by reducing the expression of AP-1 and CYR61, as well as MCP-1 production [185].…”

Section: Chlorellamentioning

confidence: 99%

Nutritional Supplements for Skin Health—A Review of What Should Be Chosen and Why

Januszewski,

Forma,

Zembala

et al. 2023

Medicina

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Supplementation of micronutrients is considered to be crucial in the reinforcement of the skin’s barrier. In this paper, 14 nutritional compounds commonly used in food or pharmaceutic industries were analyzed in terms of influencing skin conditions. The major objective of this paper was to provide a narrative review of the available literature regarding several chosen compounds that are currently widely recommended as supplements that aim to maintain proper and healthy skin conditions. We conducted a review of the literature from PubMed, Scopus, and Web of Science until September 2023 without any other restrictions regarding the year of the publication. Ultimately, we reviewed 238 articles, including them in this review. Each of the reviewed compounds, including vitamin A, vitamin C, vitamin D, vitamin E, curcumin, chlorella, Omega-3, biotin,Ppolypodium leucotomos, Simmondsia chinesis, gamma oryzanol, olive leaf extract, spirulina, and astaxanthin, was observed to present some possible effects with promising benefits for a skin condition, i.e., photoprotective radiation. Adding them to the diet or daily routine might have a positive influence on some skin inflammatory diseases such as atopic dermatitis or psoriasis. Further, UV radiation protection facilitated by some supplements and their impact on human cells might be helpful during chemotherapy or in preventing melanoma development. Further research is needed because of the lack of clear consensus regarding the doses of the described compounds that could provide desirable effects on the skin.

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Cell damage repair mechanism in a desert green algae Chlorella sp. against UV-B radiation

Cited by 16 publications

References 95 publications

Integrated Physiologic and Proteomic Analyses Reveal the Molecular Mechanism of Navicula sp. in Response to Ultraviolet Irradiation Stress

Integrated Physiologic and Proteomic Analyses Reveal the Molecular Mechanism of Navicula sp. in Response to Ultraviolet Irradiation Stress

Exploring the Physiological Multiplicity of Native Microalgae from the Ecuadorian Highland, Italian Lowland and Indoor Locations in Response to UV-B

Nutritional Supplements for Skin Health—A Review of What Should Be Chosen and Why

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