NtDREB-1BL1 Enhances Carotenoid Biosynthesis by Regulating Phytoene Synthase in Nicotiana tabacum

Chen, Dong; Wang, Qingdong; Wang, Yübo; Qin, Lili; Shi, Yuhang; Wang, Xiaoran; Wang, Ran

doi:10.3390/genes13071134

Cited by 7 publications

(5 citation statements)

References 47 publications

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“…Moreover, AMF increased the activity of the antioxidant enzyme system of A. bifolium leaves, reduced the oxidative damage to the chloroplast membrane of A. bifolium leaves, and reduced the degradation of chlorophyll, which is in agreement with the study of Jadrane et al [78]. Carotenoids are one of the important antioxidants in plants, besides being auxiliary pigments for light absorption [79]. The Car content was appropriately increased under drought stress in this experiment, which both improved the light-trapping capacity of leaf chloroplasts and protected chlorophyll from an excessive oxidative decomposition, which is important for maintaining the plant's autogenous photosynthetic capacity.…”

Section: Discussionsupporting

confidence: 90%

Response of Ammodendron bifolium Seedlings Inoculated with AMF to Drought Stress

Zheng

Liu

et al. 2023

Atmosphere

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Drought has become a serious environmental problem affecting people all around the world as a result of rising atmospheric pollution and global warming. Through symbiosis with Arbuscular mycorrhizal fungus (AMF), plants may mitigate the impacts of drought stress on growth and development as well as physiological metabolism. As a pioneer plant for windbreak and sand fixation, the symbiosis between AMF and Ammodendron bifolium can improve its drought resistance, which is of great significance for species protection and desertification control. In this study, A. bifolium seedlings were used as the test subject in a pot experiment with four drought stress gradients and two inoculation treatments to examine the effects of water treatment and AMF inoculation on the growth of the seedlings. The results showed that drought stress significantly inhibited the growth indexes of A. bifolium seedlings such as the height, basal diameter, blades number, and biomass, and that inoculation with AMF could promote the growth of A. bifolium seedlings and help mitigate the damage caused by drought stress. Drought stress increased the antioxidant enzyme activity and proline (Pro) accumulation in A. bifolium plants, and AMF inoculation induced higher antioxidant enzyme activity and lower malondialdehyde (MDA) and Pro contents in A. bifolium seedlings compared to non-AMF-inoculated plants. Drought stress harmed the chloroplast structure, reduced the chlorophyll concentration, and decreased the photosynthetic efficiency in A. bifolium seedlings. The ability of AMF-inoculated plants to withstand drought was enhanced by increased levels of photosynthetic pigments, higher photosynthetic activity, and increased photosynthetic product accumulation in the roots. These results suggest that AMF inoculation can alleviate drought-induced damage by promoting plant growth and improving plant antioxidant, osmoregulation, and photosynthetic capacity. In the context of increasing drought due to global warming, AMF inoculation can be an excellent way to enhance A. bifolium drought resistance.

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Section: Discussionsupporting

confidence: 90%

Response of Ammodendron bifolium Seedlings Inoculated with AMF to Drought Stress

Zheng

Liu

et al. 2023

Atmosphere

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“…In tobacco, by binding to DRE in the promoter of PSY , NtDREB-1BL1 can regulate carotenoid biosynthesis. The overexpression of NtDREB-1BL1 upregulates the expression of PSY and enhances the drought tolerance of the transgenic line [ 37 ]. Previous studies demonstrated that carotenoids participate in aridity adaptations in N. yezoensis [ 32 ]; the DRE present in PyPSY might function similarly.…”

Section: Discussionmentioning

confidence: 99%

Functional Characterization of the First Bona Fide Phytoene Synthase in Red Algae from Pyropia yezoensis

Li,

Pu,

Zhou

et al. 2024

Marine Drugs

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The formation of phytoene by condensing two geranylgeranyl diphosphate molecules catalyzed by phytoene synthase (PSY) is the first committed and rate-limiting step in carotenoid biosynthesis, which has been extensively investigated in bacteria, land plants and microalgae. However, this step in macroalgae remains unknown. In the present study, a gene encoding putative phytoene synthase was cloned from the economic red alga Pyropia yezoensis—a species that has long been used in food and pharmaceuticals. The conservative motifs/domains and the tertiary structure predicted using bioinformatic tools suggested that the cloned PyPSY should encode a phytoene synthase; this was empirically confirmed by pigment complementation in E. coli. This phytoene synthase was encoded by a single copy gene, whose expression was presumably regulated by many factors. The phylogenetic relationship of PSYs from different organisms suggested that red algae are probably the progeny of primary endosymbiosis and plastid donors of secondary endosymbiosis.

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“…AsA (or vitamin C) is a natural water-soluble vitamin that acts as a potent antioxidant and free-radical scavenger [47]. AsA is the most abundant antioxidant compound in all plant tissues, and has a key role in crucial reactions throughout plant development, including its action as a promoter of enhanced pectin solubilization and depolymerization of polysaccharides during the ripening of climacteric fruit [48].…”

Section: Discussionmentioning

confidence: 99%

Preservation of Quality and Bioactive Compounds in Mangoes Using Chitosan-Graphene-Oxide-Based Biodegradable Packaging

Vilvert,

de Freitas,

Ferreira

et al. 2023

Horticulturae

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Mango is a climacteric fruit that requires efficient postharvest technologies to maintain quality during storage and transportation. This study aimed to investigate the effect of biodegradable packaging from chitosan (CS) incorporated with graphene oxide (GO) on the quality, bioactive compounds and antioxidant activity of cold-stored ‘Tommy Atkins’ mangoes. Mangoes harvested at physiological maturity were stored without packaging or in CS, CS-GO or non-biodegradable polyethylene (PE) packaging at 12.0 °C and 89% relative humidity for 42 days. The results show that GO improved the water barrier and mechanical properties of CS packaging. All packaging delayed fruit ripening by reducing the respiration rate, mass loss, softening and changes in color, soluble solids, titratable acidity and beta-carotene content, also preserving the mangoes’ visual appearance. In addition, all packaging maintained higher ascorbic acid, yellow flavonoid, phenolic compounds and antioxidant activity levels in the fruit, compared to non-packed ones. Chitosan packaging is a promising, eco-friendly alternative for the preservation of quality, bioactive compounds and antioxidant activity of cold-stored ‘Tommy Atkins’ mangoes, extending their postharvest life by at least 14 days.

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NtDREB-1BL1 Enhances Carotenoid Biosynthesis by Regulating Phytoene Synthase in Nicotiana tabacum

Cited by 7 publications

References 47 publications

Response of Ammodendron bifolium Seedlings Inoculated with AMF to Drought Stress

Response of Ammodendron bifolium Seedlings Inoculated with AMF to Drought Stress

Functional Characterization of the First Bona Fide Phytoene Synthase in Red Algae from Pyropia yezoensis

Preservation of Quality and Bioactive Compounds in Mangoes Using Chitosan-Graphene-Oxide-Based Biodegradable Packaging

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