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| http://dx.doi.org/10.1038/bjc.1965.31 | DOI Listing |
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Exogenous Melatonin Alleviated Leaf Yellowing via Inhibiting Respiration and Ethylene Biosynthesis during Shelf Life in Pakchoi.
Plants (Basel)
August 2022
College of Food Science, Shenyang Agricultural University, Shenyang 110866, China.
Postharvest yellowing of leafy plant is a manifestation of senescence, and melatonin (MT) is known to delay leaf senescence in some higher plants. Herein, we investigated the effect of exogenous MT treatment on postharvest pakchoi by monitoring the ethylene biosynthesis and respiratory metabolism. Results showed that exogenous MT effectively extended the shelf life, delayed leaf yellowing, minimized the alteration in Fv/Fm ratio and maintained higher integrity of chloroplast in pakchoi.
View Article and Find Full Text PDFThe role of ROS-induced change of respiratory metabolism in pulp breakdown development of longan fruit during storage.
Food Chem
February 2020
Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China. Electronic address:
Compared to the control longans, hydrogen peroxide (HO)-treated longans exhibited higher index of pulp breakdown, higher fruit respiration rate, higher activities of pulp phosphohexose isomerase (PGI), succinate dehydrogenase (SDH), cytochrome C oxidase (CCO), ascorbic acid oxidase (AAO) and polyphenol oxidase (PPO), but lower activity of pulp nicotinamide adenine dinucleotide kinase (NADK). HO-treated longans also exhibited lower total activities of pulp glucose-6-phosphate dehydrogenase (G-6-PDH) and 6-phosphogluconate dehydrogenase (6-PGDH), lower levels of pulp NADP(H), but higher levels of pulp NAD(H). These data indicated that HO-stimulated longan pulp breakdown was owing to a decreased proportion of pentose phosphate pathway (PPP), the increased proportions of Embden-Meyerhof-Parnas pathway (EMP), tricarboxylic acid (TCA) cycle and cytochrome pathway (CCP) in total respiratory pathways.
View Article and Find Full Text PDF2-Deoxy-d-glucose increases GFAT1 phosphorylation resulting in endoplasmic reticulum-related apoptosis via disruption of protein N-glycosylation in pancreatic cancer cells.
Biochem Biophys Res Commun
June 2018
Departments of Integrated Diagnostic Pathology, Graduate School of Medicine, Nippon Medical School, Tokyo 113-8602, Japan. Electronic address:
The glycolytic inhibitor 2-deoxy-d-glucose (2DG) causes energy starvation, affecting cell viability in a wide range of cancer cell lines. To determine the action of 2DG in pancreatic cancer, we performed proteomic analysis of pancreatic cancer cell line after 2DG treatment. Eighty proteins showed differential expression and among these, proteins involved in phosphohexose metabolism were upregulated.
View Article and Find Full Text PDFCorrelation between root respiration and the levels of biomass and glycyrrhizic acid in .
Exp Ther Med
September 2017
School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, P.R. China.
Article Synopsis
- The study examined the relationship between root respiration and the levels of biomass and glycyrrhizic acid in a specific plant, using various biochemical analyses.
- Different respiration-related enzymes and pathways, such as glycolysis (EMP), TCA cycle, and pentose phosphate pathway, were evaluated for their roles in root respiration.
- Results showed a strong correlation between TCA pathway and biomass, as well as insights into how metabolites like pyruvic acid and acetyl coenzyme A relate to glycyrrhizic acid production, suggesting future cultivation improvements.
Multiple Ligand-Bound States of a Phosphohexomutase Revealed by Principal Component Analysis of NMR Peak Shifts.
Sci Rep
July 2017
Department of Biochemistry, 117 Schweitzer Hall, University of Missouri, Columbia, Missouri, 65211, USA.
Enzymes sample multiple conformations during their catalytic cycles. Chemical shifts from Nuclear Magnetic Resonance (NMR) are hypersensitive to conformational changes and ensembles in solution. Phosphomannomutase/phosphoglucomutase (PMM/PGM) is a ubiquitous four-domain enzyme that catalyzes phosphoryl transfer across phosphohexose substrates.
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