The influence of flooding pretreatment on metabolic changes in winter cereal seedlings during ice encasement

1983 ◽  
Vol 61 (1) ◽  
pp. 142-147 ◽  
Author(s):  
C. J. Andrews ◽  
M. K. Pomeroy
Keyword(s):  
Low Temperature ◽  
Alcohol Dehydrogenase ◽  
Winter Cereal ◽  
Hardening Process ◽  
Alcohol Dehydrogenase Activity ◽  
Anaerobic Stress ◽  
Ice Encasement ◽  
Survival Potential ◽  
Glycolytic Rate ◽  
Flooding Period

The survival of winter wheats during ice encasement is increased by pre-exposure to low temperature flooding. The response is duplicated by nitrogen exposure, indicating an anaerobic hardening process. During ice encasement, higher levels of ethanol accumulate in previously flooded plants than in nonflooded plants. Alcohol dehydrogenase activity is threefold higher at the end of a 2 week low temperature flooding period than in aerobically grown plants. The activity is lower after 3 days in ice. The decrease is similar in previously flooded and nonflooded plants, but is larger in Dover barley which is more susceptible to ice encasement stress than the wheats. Malate declines during flooding and is higher during ice encasement in nonflooded than in flooded plants. Previously flooded plants enter the more severe anaerobic stress of ice encasement with an accelerated glycolytic rate, and thus a higher survival potential.

Influence of Flooding on the Alcohol Dehydrogenase Activity of Roots of Trifolium subterraneum L.

1974 ◽  
Vol 1 (1) ◽  
pp. 9 ◽  
Author(s):  
CM Francis ◽  
AC Devitt ◽  
P Steele
Keyword(s):  
Alcohol Dehydrogenase ◽  
Anaerobic Respiration ◽  
Trifolium Subterraneum ◽  
Solution Culture ◽  
Sand Culture ◽  
Flooding Tolerance ◽  
Alcohol Dehydrogenase Activity ◽  
Adh Activity ◽  
Pot Culture ◽  
Flooding Period

Flooding the roots of T. subterraneum grown in sand culture induced large (often 30-fold) increases in alcohol dehydrogenase (ADH) activity, indicative of anaerobic respiration. In pot culture the levels of ADH activity were lower in varieties of subspecies yanninicum than in varieties of subspecies brachycalycinum and subterraneum. The varieties took 6–9 days to reach maximum ADH values, indicating a flooding period of this order is suitable in varietal testing for flooding tolerance. Lower ADH levels in subspecies yanninicum were not evident when the roots were tested after 3 days in anaerobic solution culture.

ALCOHOL DEHYDROGENASE ACTIVITY IN ISOLATED VACUOLES OF RED BEET ROOT CELLS

Tsitologiya ◽  
2018 ◽  
Vol 60 (6) ◽  
pp. 469-475
Author(s):  
O. D. Nimaeva ◽  
◽  
E. V. Pradedova ◽  
A. B. Karpova ◽  
R. K. Salyaev ◽  
...  
Keyword(s):  
Alcohol Dehydrogenase ◽  
Dehydrogenase Activity ◽  
Root Cells ◽  
Beet Root ◽  
Red Beet ◽  
Alcohol Dehydrogenase Activity

Elevation of Alcohol Dehydrogenase Activity in the Subclinically Scorbutic Guinea-Pig

1972 ◽  
Vol 42 (6) ◽  
pp. 781-784 ◽  
Author(s):  
Maureen O'keane ◽  
M. R. Moore ◽  
A. Goldberg
Keyword(s):  
Alcohol Dehydrogenase ◽  
Guinea Pig ◽  
Dehydrogenase Activity ◽  
Guinea Pigs ◽  
Liver Protein ◽  
Alcohol Dehydrogenase Activity ◽  
Nadh Ratio

1. Because it has been shown that a majority of alcoholics are subclinically scorbutic, the metabolism of ethanol was studied in subclinically-scorbutic guinea-pigs. 2. Hepatic alcohol dehydrogenase activity was raised maximally by ethanol within 2 days. 3. In twenty-three subclinically-scorbutic guinea-pigs fed ethanol for 2 weeks, the alcohol dehydrogenase activity (±SD) was 11·5 ± 1·2 units/g of liver protein compared with 8·6 ± 0·6 units/g of liver protein in twenty-three healthy animals fed ethanol. 4. The NAD+/NADH ratio in subclinically-scorbutic guinea-pigs and healthy guinea-pigs fed ethanol, shows that there is more NAD+ available for oxidation of alcohol in subclinically-scorbutic guinea-pigs. These results may explain the increased tolerance of alcoholics to alcohol.

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