Effect of Cd sup 2+ CN lipid composition of thylakoid membranes CF wheat chloroplasts

Conference · Tue May 01 04:00:00 EDT 1990 · Plant Physiology, Supplement; (USA)

OSTI ID:5848403

Malik, D; Sheoran, I S; Singh, R ^[1]

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1. Haryana Agricultural Univ., Hisar (India)

Cadmium application in wheat plants decreased thylakoid total lipids, total glycolipids, total phospholipids and total neutral lipids by 22, 23, 12 and 25% respectively. MGDG and DGDG were the major glycolipids and their level decreased by 32 and 27%, respectively under cadmium treatment. Sulpholipids were also decreased by 27%. Cadmium application also decreased the concentration of phosphatidyl glycerol (PG) and phosphatidyl choline (PC) to the extent of about 57 and 31%, respectively. Phosphatidic acid, which could not be detected under control, appeared in cadmium treated leaves. Triglycerides, the major constituents of neutral lipids, were decreased by 68%. However, free fatty acid content increased by about 19% under cadmium treatment. These results indicate that cadmium treatment affects the architecture of thylakoid membranes which in turn may adversely affect the light reactions of photosynthesis.

• OSTI ID: 5848403
• Report Number(s): CONF-9007196--
• Conference Information: Journal Name: Plant Physiology, Supplement; (USA) Journal Volume: 93:1
• Country of Publication: United States
• Language: English

Related Subjects

560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CADMIUM
CARBOHYDRATES
CEREALS
CHEMICAL REACTIONS
ELEMENTS
ESTERS
GLYCOLIPIDS
GRAMINEAE
LECITHINS
LILIOPSIDA
LIPIDS
MAGNOLIOPHYTA
MEMBRANE PROTEINS
METALS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PHOSPHOLIPIDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PLANTS
PROTEINS
SACCHARIDES
SYNTHESIS
THYLAKOID MEMBRANE PROTEINS
TOXICITY
WHEAT