Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Query: EC:1.10.3.3 (
ascorbate oxidase
)
778
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
Energy status and respiration metabolism of "Fuyan" longan fruit treated by hydrogen peroxide (H2O2) and their relationship to pericarp browning were studied. The results displayed that H2O2 significantly increased the respiration rate, increased activities of respiratory terminal oxidases like cytochrome C oxidase (CCO) and
ascorbic acid oxidase
(
AAO
), decreased NAD kinase activity, maintained lower contents of NADP and NADPH as well as higher amounts of NAD and NADH, and accelerated the decrease of energy charge. These results gave convincing evidence that the treatment of H2O2 for accelerating longan pericarp browning was due to an increase of energy deficiency, an increase of respiratory metabolic pathways of Embden-Meyerhof pathway (EMP) and tricarboxylic acid (TCA) cycle, a decrease of
pentose
phosphate pathway (PPP) of respiratory pathway, and an increase of activities of respiratory terminal oxidases like CCO and
AAO
.
...
PMID:Hydrogen Peroxide Induced Changes in Energy Status and Respiration Metabolism of Harvested Longan Fruit in Relation to Pericarp Browning. 2721 1
Lasiodiplodia theobromae (Pat.) Griff. & Maubl. is a major pathogen causing decay of harvested longan fruit. The roles of energy status regulated by 2,4-dinitrophenol (DNP) and adenosine triphosphate (ATP) in disease development regarding respiratory metabolism of L. theobromae-inoculated "Fuyan" longan fruit were studied. Compared with L. theobromae-inoculated longans, DNP treatment could promote the index of fruit disease, accelerate the decrease in energy charge, increase respiration rate and the activities of respiratory terminal oxidases like CCO,
AAO
and PPO, elevate contents of NAD and NADH, but decrease NAD kinase activity, as well as contents of NADP and NADPH; however, exogenous ATP supply acted contrarily. Above results suggested the different energy status caused by DNP and ATP treatments accelerated or delayed the disease development of L. theobromae-inoculated longans via regulating Embden-Meyerhof pathway (EMP) and tricarboxylic acid (TCA) cycle,
pentose
phosphate pathway (PPP) and activities of respiratory terminal oxidases.
...
PMID:Energy status regulates disease development and respiratory metabolism of Lasiodiplodia theobromae (Pat.) Griff. & Maubl.-infected longan fruit. 2845 2
Effects of propyl gallate on metabolisms of respiration and energy of harvested 'Fuyan' longans and its relationship to pericarp browning were investigated. Compared to control longans, propyl gallate could reduce
ascorbic acid oxidase
(
AAO
) activity, lower cytochrome C oxidase (CCO) activity during early-storage and mid-storage, increase NADK activity, elevate contents of NADP and NADPH, decrease contents of NAD and NADH, in addition, lower the decreases of ATP content and energy charge (E.C.), increase activities of mitochondrial H
+
-ATPase, Ca
2+
-ATPase and Mg
2+
-ATPase during early-storage and mid-storage. Above results suggested that propyl gallate-retarded browning development in pericarp of harvested longans was resulted from decreases in activities of respiratory terminal oxidases like CCO and
AAO
, increase in proportion of
pentose
phosphate pathway (PPP) to Embden-Meyerhof pathway (EMP) and tricarboxylic acid (TCA) cycle, and maintenance of mitochondrial integrity via retaining higher levels of ATP content and energy charge, as well as higher activities of mitochondrial ATPase.
...
PMID:Application of propyl gallate alleviates pericarp browning in harvested longan fruit by modulating metabolisms of respiration and energy. 2894 53
Compared to the control longans, hydrogen peroxide (H
2
O
2
)-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). H
2
O
2
-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 H
2
O
2
-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. These findings further revealed that H
2
O
2
could enhance respiration rate, and thus accelerate pulp breakdown occurrence and shorten the shelf life of longan fruit.
...
PMID:The role of ROS-induced change of respiratory metabolism in pulp breakdown development of longan fruit during storage. 3149 87
