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. 1978 Dec;62(6):846–850. doi: 10.1104/pp.62.6.846

Characteristics of Sugar Uptake in Hypocotyls of Cotton 1

Steven E Hampson 1,2, Robert S Loomis 1, D William Rains 1
PMCID: PMC1092239  PMID: 16660623

Abstract

Uptake of sucrose and hexoses by cotton (Gossypium hirsutum L.) hypocotyl segments from free space was shown to be an active, carrier-mediated process. Separate carriers existed for hexoses and sucrose. Accumulated sugars appeared in both soluble and insoluble fractions of the tissue. At optimum temperature and pH, sucrose uptake rate versus concentration was fit by a rectangular hyperbola with Vmax of 14 micromoles per gram fresh weight per hour and Km of 8 mm. Sucrose was the principal sugar found in the free space in vivo, and invertase activity was essentially absent from that space except after aging.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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