Movement of metal cations through the soil to the plant root membrane. Progress report, September 1, 1975--August 31, 1976
This project investigates principles and mechanisms governing flux of metal cations, K, Rb, and Cs into plant roots growing in soil. Three soil and seven plant factors have been combined in a mathematical model to test principles and mechanisms developed. Measurement of K and Rb influx into corn roots growing in solution culture showed that corn roots absorb K and Rb interchangeably over a wide range of K/Rb ratios and concentrations in solution. Equilibration of K and Rb with soil showed that K/Rb in the solution phase was 2 to 4 times the ratio on the exchange phase. Potassium and Rb uptake by corn growing in 4 different soils showed the K/Rb ratio of uptake corresponded with the K/Rb ratio on the exchange sites indicating they determined the K and Rb supply to the root. The data will be evaluated in a mathematical model to aid in determining the mechanisms. A new procedure was developed for measuring total length of roots in a sample and also the distribution of diameter size classes. A new procedure was also developed for analyzing curves of ion depletion with time from nutrient solutions to determine the factors characterizing influx of ions into intact plants.
- Research Organization:
- Purdue Univ., Lafayette, Ind. (USA)
- Sponsoring Organization:
- AEC
- OSTI ID:
- 7250893
- Report Number(s):
- COO-1495-28
- Country of Publication:
- United States
- Language:
- English
Similar Records
Movement of metal cations through the soil to the plant root membrane. Technical progress report, September 1, 1976--November 30, 1977
Use of K/Rb ratio to characterize potassium uptake by plant roots growing in soil
Movement of metal cations through the soil to the plant root membrane. Final technical report, June 1, 1966--November 30, 1978
Technical Report
·
Mon Aug 01 00:00:00 EDT 1977
·
OSTI ID:7282323
Use of K/Rb ratio to characterize potassium uptake by plant roots growing in soil
Journal Article
·
Sat Jul 01 00:00:00 EDT 1978
· Soil Sci. Soc. Am. J.; (United States)
·
OSTI ID:5927691
Movement of metal cations through the soil to the plant root membrane. Final technical report, June 1, 1966--November 30, 1978
Technical Report
·
Tue Oct 31 23:00:00 EST 1978
·
OSTI ID:6369968
Related Subjects
553000 -- Agriculture & Food Technology
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
60 APPLIED LIFE SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALI METALS
BIOCHEMICAL REACTION KINETICS
BIOMASS
CELL CONSTITUENTS
CELL MEMBRANES
CEREALS
CESIUM
CHEMICAL COMPOSITION
ELEMENTS
ENERGY SOURCES
GRAMINEAE
GRASS
GROWTH
KINETICS
MAIZE
MATHEMATICAL MODELS
MEASURING METHODS
MEMBRANES
METABOLISM
METALS
PERMEABILITY
PLANTS
POTASSIUM
REACTION KINETICS
RENEWABLE ENERGY SOURCES
ROOT ABSORPTION
ROOTS
RUBIDIUM
SOILS
UPTAKE
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
60 APPLIED LIFE SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALI METALS
BIOCHEMICAL REACTION KINETICS
BIOMASS
CELL CONSTITUENTS
CELL MEMBRANES
CEREALS
CESIUM
CHEMICAL COMPOSITION
ELEMENTS
ENERGY SOURCES
GRAMINEAE
GRASS
GROWTH
KINETICS
MAIZE
MATHEMATICAL MODELS
MEASURING METHODS
MEMBRANES
METABOLISM
METALS
PERMEABILITY
PLANTS
POTASSIUM
REACTION KINETICS
RENEWABLE ENERGY SOURCES
ROOT ABSORPTION
ROOTS
RUBIDIUM
SOILS
UPTAKE