Comparison of the effect of indoleacetic acid and fusicoccin on the breakdown of phosphatidylinositol in maize coleoptiles

Journal Article · Wed Oct 31 23:00:00 EST 1990 · Plant Physiology; (USA)

DOI:https://doi.org/10.1104/pp.94.3.1009· OSTI ID:5841653

Zocchi, G ^[1]

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1. Universita di Milano (Italy)

The effect of indoleacetic acid (IAA) and fusicoccin (FC) on the breakdown of phosphatidylinositol in maize (Zea mays L.) coleoptiles has been studied. Coleoptiles were able to incorporate ({sup 3}H)myo-inositol into the phospholipid fraction almost linearly for 8 hours. Thin layer chromatography analysis of total phospholipids showed that ({sup 3}H)myo-inositol was incorporated only into phosphatidylinositol. Prelabeled coleoptiles treated with IAA showed a loss of the radioactivity incorporated in the phospholipid fraction, whose level decreased by 34% after 1 hour. Treatment with FC, on the contrary, did not modify the content of labelled phosphatidylinositol with respect to the control. The different effects of IAA and FC and a possible mechanism of IAA action on growth are discussed.

• OSTI ID: 5841653
• Journal Information: Plant Physiology; (USA), Journal Name: Plant Physiology; (USA) Vol. 94:3; ISSN 0032-0889; ISSN PLPHA
• Country of Publication: United States
• Language: English

Related Subjects

550201* -- Biochemistry-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
ANTIGENS
AUXINS
BIOLOGICAL EFFECTS
CEREALS
COMPARATIVE EVALUATIONS
ESTERS
GRAMINEAE
GROWTH
HYDROGEN COMPOUNDS
ISOTOPE APPLICATIONS
LILIOPSIDA
LIPIDS
MAGNOLIOPHYTA
MAIZE
MATERIALS
METABOLISM
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PHOSPHOLIPIDS
PLANT GROWTH
PLANT GROWTH REGULATORS
PLANTS
TOXIC MATERIALS
TOXINS
TRACER TECHNIQUES
TRITIUM COMPOUNDS