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Plant Physiology 45:752-755 (1970) © 1970 American Society of Plant Biologists Freezing Injury and Resistance in Spinach Chloroplast Grana 1,2a Blood Research Laboratory, American National Red Cross, Bethesda, Maryland 20014
Spinach grana appear to be injured by the same mechanism and by the same degree of dehydration and volume reduction that injures animal cells. Winter-hardened or artificially protected grana avoid injury by permitting a reversible influx of solute which forestalls excessive dehydration and shrinkage.
1 Contribution 175 from the American National Red Cross Blood Research Laboratory. 2 These investigations were supported in part by Office of Naval Research Contract N00014-69-C-0162.
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