Introduction: (L.) (Thunb.) A. A. Bullock, a halophyte that grows all over the southwest coast of Korea, is a medicinal plant with various pharmacological effects. The salt defense mechanism stimulates the biosynthesis of various secondary metabolites and improves functional substances. In this study, we investigated the optimal NaCl concentration for the growth and enhancement of secondary metabolites in hydroponically grown .
Methods: The seedlings grown for 3 weeks in a hydroponic cultivation system were treated with 0-, 25-, 50-, 75-, and 100-mM NaCl in Hoagland's nutrient solution for 8 weeks. No significant effect on the growth and chlorophyll fluorescence was observed for the NaCl concentrations below 100-mM.
Results And Discussions: The increase in the NaCl concentration resulted in the decrease in the water potential of the leaves. The Na content accumulated in the aerial part increased rapidly and the content of K, which acts as an antagonist, decreased with the increase in NaCl concentrations in hydroponics. The total amino acid content of decreased compared to the 0-mM NaCl, and most of the amino acid content decreased as the NaCl concentration increased. In contrast, the content of urea, proline (Pro), β-alanine, ornithine, and arginine was increased with an increase in NaCl concentration. The Pro content at 100-mM NaCl accounted for 60% of the total amino acids and was found to be a major osmoregulator as an important component of the salt defense mechanisms. The top five compounds identified in the were classified as flavonoids while the flavanone compound was detected only in the NaCl treatments. A total of four myricetin glycosides were increased in comparison to the 0-mM NaCl. Among the differentially expressed genes, a significantly large change in Gene ontology was seen in the circadian rhythm. NaCl treatment enhanced the flavonoid-based substances of . The optimum NaCl concentration for the enhancement of secondary metabolites of the in the vertical farm-hydroponic cultivation system was 75-mM NaCl.
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http://dx.doi.org/10.3389/fpls.2023.1159625 | DOI Listing |
Metabolites
December 2024
School of Food Science and Engineering, Foshan University, Foshan 528231, China.
Background: is a member of the lactic acid bacterium group commonly found in many salt-fermented foods. Strains of isolated from high-salinity environments have been shown to tolerate salt stress to some extent. However, the specific responses and mechanisms of under salt stress are not fully understood.
View Article and Find Full Text PDFBiosensors (Basel)
December 2024
Department of Biochemistry and Chemistry, La Trobe University, Bundoora, VIC 3086, Australia.
Surface-enhanced Raman scattering (SERS) is a powerful optical sensing platform that amplifies the target signals by Raman scattering. Despite SERS enabling a meager detection limit, even at the single-molecule level, SERS also tends to equally enhance unwanted molecules due to the non-specific binding of noise molecules in clinical samples, which complicates its use in complex samples such as bodily fluids, environmental water, or food matrices. To address this, we developed a novel non-fouling biomimetic SERS sensor by self-assembling an anti-adhesive, anti-fouling, and size-selective Lubricin (LUB) coating on gold nanoparticle (AuNP) functionalized glass slide surfaces via a simple drop-casting method.
View Article and Find Full Text PDFGels
November 2024
Physics Department, Lomonosov Moscow State University, 119991 Moscow, Russia.
Bio-based eco-friendly cellulose nanocrystals (CNCs) gain an increasing interest for diverse applications. We report the results of an investigation of hydrogels spontaneously formed by the self-assembly of carboxylated CNCs in the presence of CaCl using several complementary techniques: rheometry, isothermal titration calorimetry, FTIR-spectroscopy, cryo-electron microscopy, cryo-electron tomography, and polarized optical microscopy. Increasing CaCl concentration was shown to induce a strong increase in the storage modulus of CNC hydrogels accompanied by the growth of CNC aggregates included in the network.
View Article and Find Full Text PDFGels
November 2024
Department of Chemistry, Missouri University of Science and Technology, Rolla, MO 65409, USA.
A recrosslinkable CO-resistant branched preformed particle gel (CO-BRPPG) was developed for controlling CO injection conformance, particularly in reservoirs with super-permeable channels. Previous work focused on a millimeter-sized CO-BRPPG in open fractures, but its performance in high-permeability channels with pore throat networks remained unexplored. This study used a sandpack model to evaluate a micro-sized CO-BRPPG under varying conditions of salinity, gel concentration, and pH.
View Article and Find Full Text PDFFront Microbiol
December 2024
CAS Key Lab of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China.
Phenol is one of the major organic pollutants in high salt industrial wastewater. The biological treatment method is considered to be a cost-effective and eco-friendly method, in which the co-culture of microalgae and bacteria shows a number of advantages. In the previous study, a co-culture system featuring () and () was established and could degrade 400 mg L phenol at 3% NaCl concentration.
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