Metabolic acclimation to low temperature anoxia in cereals

Journal Article · Sat Apr 01 00:00:00 EST 1989 · Plant Physiology, Supplement; (USA)

OSTI ID:6597412

Andrews, C J; Hope, H J ^[1]

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1. Plant Research Centre, Ottawa (Canada)

Cold hardened seedlings of winter wheat, but not winter barley show an anaerobic acclimation response in which low temperature flooding increases the survival of plants in subsequent ice encasement at {minus}1{degrees}C. Previous flooding increases the level of total adenylates by about 40%, but the level declines throughout the ice exposure whether the plants are flooded or not. Barley shows a faster decline particularly in those plants previously flooded. ATP:ADP ratios increase, or are maintained in wheat plants briefly ice encased after flooding, but not in barley plants so treated. Activity of alcohol dehydrogenase and phosphofructokinase is higher in plants briefly ice encased after flooding indicating an increase in glycolytic rate. Winter wheat administered {sup 35}S methionine shows a change in radioactive proteins synthesized in 4 days of low temperature flooding, supporting the physiological evidence of acclimation.

• OSTI ID: 6597412
• Journal Information: Plant Physiology, Supplement; (USA), Vol. 89:4; ISSN 0079-2241
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
59 BASIC BIOLOGICAL SCIENCES
BARLEY
TEMPERATURE EFFECTS
PROTEINS
METABOLISM
WHEAT
ADP
ANOXIA
ATP
BIOLOGICAL ADAPTATION
BIOLOGICAL STRESS
METHIONINE
OXIDOREDUCTASES
PLANT GROWTH
QUANTITY RATIO
SULFUR 35
TRACER TECHNIQUES
AMINO ACIDS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBOXYLIC ACIDS
CEREALS
DAYS LIVING RADIOISOTOPES
DRUGS
ENZYMES
EVEN-ODD NUCLEI
GRASS
GROWTH
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
LILIOPSIDA
LIPOTROPIC FACTORS
MAGNOLIOPHYTA
NUCLEI
NUCLEOTIDES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PLANTS
RADIOISOTOPES
SULFUR ISOTOPES
560200* - Thermal Effects
550501 - Metabolism- Tracer Techniques