Influence of Potassium and Sodium chloride on Germination Behaviour, Biochemical Changes, and Enzyme Activity in Two Varieties of Ocimum tenuiflorum L.

1 Biochemical changes in male, Wistar rats, treated with different doses of 1,2-dichloropropane (50-500 mg kg-1 body weight), were investigated at the end of a 4-week treatment and after a 4-week recovery period. 2 The behaviour of Phase I and Phase II metabolic steps and of the angiotensin converting enzyme activity of the renal proximal tubule brush border were determined. 3 Phase II is more affected by the solvent than Phase I metabolism, and liver metabolism is more affected than the kidney. 4 Angiotensin converting enzyme activity from the proximal tubule brush border appears to be the most sensitive parameter of kidney involvement during treatment. 5 After a 4-week recovery period all the metabolic indices together with angiotensin converting enzyme activity have returned to normal. Only liver reduced glutathione content shows a slight, but significant, increase for the highest dose (500 mg kg -1 body weight). 6 The results show that the biochemical changes induced in liver and kidney by 1,2-dichloropropane are reversible.

Download Full-text

Enzyme activity and biochemical changes of three date palm cultivars with different softening pattern during ripening

Food Chemistry ◽

10.1016/j.foodchem.2012.02.208 ◽

2012 ◽

Vol 134 (3) ◽

pp. 1279-1286 ◽

Cited By ~ 19

Author(s):

Somayeh Rastegar ◽

Majid Rahemi ◽

Amin Baghizadeh ◽

Mahdiyeh Gholami

Keyword(s):

Enzyme Activity ◽

Date Palm ◽

Biochemical Changes

Download Full-text

Growth, Mineral Composition, and Biochemical Changes of Broad Bean as Affected by Sodium Chloride and Zinc Levels and Sources

Communications in Soil Science and Plant Analysis ◽

10.1080/00103620903261619 ◽

2009 ◽

Vol 40 (19-20) ◽

pp. 3046-3060 ◽

Cited By ~ 3

Author(s):

Jahanshah Saleh ◽

Manoochehr Maftoun ◽

Sedigheh Safarzadeh ◽

Abdolsamad Gholami

Keyword(s):

Sodium Chloride ◽

Mineral Composition ◽

Broad Bean ◽

Biochemical Changes ◽

Zinc Levels

Download Full-text

Effect of High Sodium Chloride Concentrations in the Growth Medium on the Activity of Glucose-6-Phosphate Dehydrogenase From Pea Roots

Functional Plant Biology ◽

10.1071/pp9740483 ◽

1974 ◽

Vol 1 (4) ◽

pp. 483 ◽

Cited By ~ 1

Author(s):

A Poljakoff-Mayber ◽

H Greenway

Keyword(s):

Enzyme Activity ◽

Sodium Chloride ◽

Growth Medium ◽

Vascular Plants ◽

Specific Activity ◽

High Sodium ◽

Brown Discoloration ◽

Pea Roots ◽

Glucose 6 Phosphate Dehydrogenase ◽

Chloride Concentrations

The experiments reported in this paper examined discrepant results, obtained in earlier investigations, concerning the effects of NaCl in the growth medium of vascular plants on the specific activity of glucose-6-phosphate dehydrogenase (EC 1.1.1.49) extracted from the plants. NaCl at 120 mM or higher concentrations increased the specific activity of the enzyme in extracts from roots of germinating peas. However, this effect of NaCl was only clearly expressed when 0.1M phosphate was the buffer used to extract the enzyme. When organic buffers were used the observed increase in enzyme activity was either much smaller or absent. Increases in specific activity of glucose-6-phosphate dehydrogenase were only found in extracts from roots that showed severely retarded growth and some brown discoloration. No increase in activity was found either when 120 mM NaCl was added to the growth medium after seedling establishment, or if seeds were germinated in 75 mM NaCl. These observations account for the discrepancies reported in the literature.

Download Full-text

Reduction of Trimethylamine Oxide by Bacterial Enzymes

Journal of the Fisheries Research Board of Canada ◽

10.1139/f50-013 ◽

1951 ◽

Vol 8b (4) ◽

pp. 195-206 ◽

Cited By ~ 6

Author(s):

C. H. Castell ◽

J. Murray Snow

Keyword(s):

Enzyme Activity ◽

Sodium Chloride ◽

Bacterial Species ◽

General Picture ◽

E Coli ◽

Fluorescent Pseudomonas ◽

Enzyme Systems ◽

Trimethylamine Oxide ◽

Reducing Activity ◽

Halophilic Species

The trimethylamine oxide reducing enzyme systems of several common bacteria were found to have the following characteristics: (1) They are sensitive to acid conditions, showing progressively decreased activity as the pH is lowered from 8.0 to 6.0. Below pH 6.0 the system was relatively inert. (2) The activity also decreased with reductions in temperature between 37° and 0 °C., but even at 0 °C. the trimethylamine oxide is slowly reduced. (3) Increased sodium chloride decreased the rate of the enzyme activity. For the common non-halophilic species, concentrations of sodium chloride between 7 and 9 per cent almost totally inhibited the enzyme activity. (4) Nitrite inhibited the oxide reducing activity of the enzyme systems of all the organisms that were tested, but with varying decreases of inhibition with different species. Nitrate inhibited the activity of some species but not of others. (5) Within this general picture, there are slight differences which appear to be characteristic of bacterial species. The two species which were isolated from fish, Ps. putrefaciens and Achromobacter #176 were more sensitive than E. coli or A. aerogenes to reductions in pH between 7.0 and 6.0. E. coli, A. aerogenes and Ps. putrefaciens were strongly inhibited by sodium nitrate while S. marcescens and Achromobacter #176 were not. There is also considerable difference in the capacity of cells of different bacterial species to reduce trimethylamine oxide. Cultures of Achromobacter and non-fluorescent Pseudomonas were the most active of those tested.

Download Full-text

Effects of melatonin treatment on the biochemical changes and antioxidant enzyme activity of mango fruit during storage

Scientia Horticulturae ◽

10.1016/j.scienta.2019.108835 ◽

2020 ◽

Vol 259 ◽

pp. 108835 ◽

Cited By ~ 5

Author(s):

Somayeh Rastegar ◽

Hamed Hassanzadeh Khankahdani ◽

Mahsa Rahimzadeh

Keyword(s):

Enzyme Activity ◽

Antioxidant Enzyme ◽

Antioxidant Enzyme Activity ◽

Biochemical Changes ◽

Melatonin Treatment ◽

Mango Fruit

Download Full-text

Enzyme activity and biochemical changes during production of Lentinula edodes (Berk.) Pegler

Food Science and Technology ◽

10.1590/fst.38517 ◽

2019 ◽

Vol 39 (3) ◽

pp. 774-780 ◽

Cited By ~ 1

Author(s):

Maiara Andrade de Carvalho SOUSA ◽

Lívia Martinez Abreu Soares COSTA ◽

Thiago Souza PEREIRA ◽

Diego Cunha ZIED ◽

Danny Lee RINKER ◽

...

Keyword(s):

Enzyme Activity ◽

Lentinula Edodes ◽

Biochemical Changes

Download Full-text

Biochemical changes in pear (Pyrus communis L. depending on different phases of the dormancy

International Journal of Horticultural Science ◽

10.31421/ijhs/10/3/508 ◽

2004 ◽

Vol 10 (3) ◽

Author(s):

M. Göndör ◽

K. Honty ◽

A. Pedryc ◽

I. Hajdrik ◽

É. Stefanovits-Bányai

Keyword(s):

Enzyme Activity ◽

Polyphenol Oxidase ◽

Oxidase Activity ◽

Developmental Stages ◽

Frost Tolerance ◽

Biochemical Changes ◽

Polyphenol Oxidase Activity ◽

Pyrus Communis L ◽

Artificial Freezing ◽

Frost Injuries

Pear cultivars of variable frost tolerance were tested as for frost injuries suffered as a consequence of artificial freezing temperatures during the endodormancy as well as the ecodormancy. Damages were registered according to a visually defined scale, then peroxidase and polyphenol-oxidase activity was checked in buds, spurs and limbs. According to our results, 'Packham's Triumph' was the most frost tolerant cultivar. Regarding enzyme activity of both enzymes, the performance of cultivars displaying different susceptibility was also different in spurs as well as in buds. Results referring to the endodormancy were especially instructive. During the ecodormancy, data obtained at the same time indicated the differences existing between the developmental stages of dormancy in the respective cultivars.

Download Full-text