P uptake and translocation: Effect of salinity and Ca. [Gossypium hirsutum]

Journal Article · Sat Apr 01 04:00:00 EST 1989 · Plant Physiology, Supplement; (USA)

OSTI ID:7191719

Martinez, V; Lazof, D; Laeuchli, A ^[1]

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1. Univ. of California, Davis (USA)

Cotton seeds (Gossypium hirsutum L. cv Alcala SJ-2) were grown 10 to 12 days in a complete nutrient solution containing 1 mol m{sup {minus}3} Ca{sup ++} and 10 mmol m{sup {minus}3} Pi. Additions were made of NaCl to 150 mol m{sup {minus}3} and CaCl{sub 2} to 10 mol m{sup {minus}3} for the high salt and Ca treatments respectively. The inhibiting effects of salinity commence as early as two hours after salinization with an inhibition of both {sup 32}P uptake and translocation to the shoot. After a few days, a marked increase in {sup 32}P translocation to the leaves of the salinized plants is observed relative to the control, due in part to dilution by growth in the control plants. Increasing the Ca{sup ++} concentration in the nutrient solution partially relieves (35%) the inhibition of shoot growth over several days, while the inhibition of {sup 32}P translocation is relieved 30% within 2 h.

• OSTI ID: 7191719
• Journal Information: Plant Physiology, Supplement; (USA), Journal Name: Plant Physiology, Supplement; (USA) Vol. 89:4; ISSN PPYSA; ISSN 0079-2241
• Country of Publication: United States
• Language: English

Related Subjects

550201* -- Biochemistry-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCIUM COMPOUNDS
CATIONS
CHARGED PARTICLES
CHLORIDES
CHLORINE COMPOUNDS
COTTON PLANTS
DAYS LIVING RADIOISOTOPES
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
INHIBITION
IONS
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
MAGNOLIOPHYTA
MAGNOLIOPSIDA
NONMETALS
NUCLEI
ODD-ODD NUCLEI
PHOSPHORUS
PHOSPHORUS 32
PHOSPHORUS ISOTOPES
PLANTS
RADIOISOTOPES
SALINITY
SODIUM CHLORIDES
SODIUM COMPOUNDS
TOXICITY
TRACER TECHNIQUES
TRANSLOCATION
UPTAKE