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Plant Physiology 60:190-192 (1977)
© 1977 American Society of Plant Biologists

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Articles

Response to Chilling of Tomato Seedlings and Cells in Suspension Cultures

R. William Breidenbach and Alan J. Waring

1 Plant Growth Laboratory/Department of Agronomy and Range Science, University of California, Davis, California 95616

Tomato cell suspensions and seedlings (Lycopersicon esculentum) responded comparably when exposed to chilling temperatures (10 C or below). Seedling growth and cellular activities related to cell viability and culture growth (triphenyltetrazolium chloride reduction, fluoroscein diacetate uptake, and hydrolysis) were sharply diminished below 10 C. Arrhenius plots of the respiratory O2 consumption by both seedlings and cell suspensions had a break at 10 C, as is characteristic for chilling-sensitive species. The acyl chains that were found in the phospholipids of both cell cultures and seedlings were similar. These results indicate the potential usefulness of plant suspension cultures for studies of chilling injury.






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ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 1977 by the American Society of Plant Biologists