Active and passive calcium transport systems in plant cells

Technical Report · Mon Jan 01 00:00:00 EST 1990

DOI:https://doi.org/10.2172/6747197· OSTI ID:6747197

Sze, H

The ability to change cytoplasmic Ca{sup 2+} levels ((Ca{sup 2+})) by cells has made this cation a key regulator of many biological processes. Cytoplasmic (Ca{sup 2+}) is determined by the coordination of passive Ca{sup 2+} fluxes which increase cytosolic (Ca{sup 2+}) and active Ca{sup 2+} transport systems that lower cytosolic (Ca{sup 2+}). The mechanisms by which plant cells achieve this is poorly understood. We have initially used isolated vesicles from the plasma membrane or organellar membranes to study Ca{sup 2+} transport systems in oat roots (a monocot) and carrot suspension cells (a dicot). The objectives of the proposal were to identify and characterize active (energy-dependent) and passive calcium transport systems that work together to regulate calcium levels in the cytoplasm of plant cells. 10 figs., 2 tabs.

• Research Organization: Maryland Univ., College Park, MD (USA). Dept. of Botany
• Sponsoring Organization: DOE/ER
• DOE Contract Number: FG05-86ER13461
• OSTI ID: 6747197
• Report Number(s): DOE/ER/13461-5; ON: DE90013954
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CALCIUM
MEMBRANE TRANSPORT
PLANT CELLS
CELL FLOW SYSTEMS
TOXINS
BIOLOGICAL EFFECTS
ATP-ASE
BIOCHEMICAL REACTION KINETICS
CARROTS
ENZYME INHIBITORS
FRACTIONATION
MICROSOMES
NICOTIANA
OATS
PH VALUE
PROGRESS REPORT
ACID ANHYDRASES
ALKALINE EARTH METALS
ANTIGENS
CELL CONSTITUENTS
CEREALS
DOCUMENT TYPES
ELEMENTS
ENZYMES
FOOD
GRASS
HYDROLASES
KINETICS
LILIOPSIDA
MAGNOLIOPHYTA
MAGNOLIOPSIDA
MATERIALS
METALS
ORGANOIDS
PHOSPHOHYDROLASES
PLANTS
REACTION KINETICS
RIBOSOMES
SEPARATION PROCESSES
TOXIC MATERIALS
VEGETABLES
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