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Plant Physiology 77:206-210 (1985)
© 1985 American Society of Plant Biologists

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Inositol and Sugars in Adaptation of Tomato to Salt 1

Robert F. Sacher and Richard C. Staples

Boyce Thompson Institute for Plant Research at Cornell University, Tower Road, Ithaca, New York 14853

Tomato (Lycopersicon esculentum Mill. cv New Yorker) plants subjected to 100 millimolar NaCl plus Hoagland nutrients exhibited a pattern of wilting, recovery of turgor, and finally recovery of growth at a reduced level, which required 3 days. During the nongrowing, adaptation phase there were immediate increases in free hexoses and sucrose which declined to near control levels as growth resumed. There was a steady increase in myo-inositol content which reached its maximal level at the time of growth resumption. The myo-inositol level then remained elevated for the remainder of the experiment. Myo-inositol constituted two-thirds of the soluble carbohydrate in leaves and three-fourths of the soluble carbohydrate in roots of salt-adapted plants. Plants which were alternated daily between salt and control solutions accumulated less myo-inositol and exhibited less growth than the continuously salt-treated plants. In L. pennellii and in salt-tolerant and salt-sensitive breeding lines selected from L. esculentum x L. pennellii BC(1) and F(8), myo-inositol content was highest in the most tolerant genotypes, intermediate in the normal cultivar, and lowest in the sensitive genotype after treatment with salt.

1 Supported in part by a grant from Agrigenetics Research Associates Limited, an R and D limited partnership sponsored by Agrigenetics Corporation.




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S. Zhou, R. Sauve, T. Fish, and T. W. Thannhauser
Salt-induced and Salt-suppressed Proteins in Tomato Leaves
J. Amer. Soc. Hort. Sci., March 1, 2009; 134(2): 289 - 294.
[Abstract] [Full Text] [PDF]


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