• We are sorry, but NCBI web applications do not support your browser and may not function properly. More information
Logo of plntphysLink to Publisher's site
Plant Physiol. Oct 1997; 115(2): 609–616.
PMCID: PMC158521

Sucrose Accumulation in the Sugarcane Stem Is Regulated by the Difference between the Activities of Soluble Acid Invertase and Sucrose Phosphate Synthase.


To assess the relative importance of morphological and biochemical factors in the regulation of sucrose (Suc) accumulation in the sugarcane (Saccharum spp. hybrids) stem, we investigated morphological and biochemical correlates of Suc accumulation among parents and progeny of a family segregating for differences. In contrast to the parents, no relationship was observed between morphology and the level of Suc accumulation among the progeny. The level and timing of Suc accumulation in the whole stalk and within individual internodes was correlated with the down-regulation of soluble acid invertase (SAI) activity. High SAI activity prevented most, but not all, Suc accumulation. There was a critical threshold of SAI activity above which high concentrations of Suc did not accumulate. This low level of SAI activity was always exceeded in the internodes of the lower-Suc-storing genotypes. However, low activity of SAI was not sufficient by itself to account for the Suc accumulation in the higher-Suc-storing genotypes. Major differences in Suc accumulation among the population were attributed to the difference between activities of SAI and Suc phosphate synthase, provided SAI is below the critical threshold concentration. This result is not unexpected, since the pathway of Suc transport for storage involves Suc hydrolysis and resynthesis.

Full Text

The Full Text of this article is available as a PDF (815K).

Selected References

These references are in PubMed. This may not be the complete list of references from this article.
  • Hatch MD. Sugar accumulation by sugar-cane storage tissue: the role of sucrose phosphate. Biochem J. 1964 Dec;93(3):521–526. [PMC free article] [PubMed]
  • Hubbard NL, Huber SC, Pharr DM. Sucrose Phosphate Synthase and Acid Invertase as Determinants of Sucrose Concentration in Developing Muskmelon (Cucumis melo L.) Fruits. Plant Physiol. 1989 Dec;91(4):1527–1534. [PMC free article] [PubMed]
  • Sacher JA, Hatch MD, Glasziou KT. Sugar Accumulation Cycle in Sugar Cane. III. Physical & Metabolic Aspects of Cycle in Immature Storage Tissues. Plant Physiol. 1963 May;38(3):348–354. [PMC free article] [PubMed]
  • Sonnewald U, Brauer M, von Schaewen A, Stitt M, Willmitzer L. Transgenic tobacco plants expressing yeast-derived invertase in either the cytosol, vacuole or apoplast: a powerful tool for studying sucrose metabolism and sink/source interactions. Plant J. 1991 Jul;1(1):95–106. [PubMed]
  • Van Handel E. Direct microdetermination of sucrose. Anal Biochem. 1968 Feb;22(2):280–283. [PubMed]
  • Welbaum GE, Meinzer FC. Compartmentation of solutes and water in developing sugarcane stalk tissue. Plant Physiol. 1990 Jul;93(3):1147–1153. [PMC free article] [PubMed]

Articles from Plant Physiology are provided here courtesy of American Society of Plant Biologists


Related citations in PubMed

See reviews...See all...

Cited by other articles in PMC

See all...


Recent Activity

Your browsing activity is empty.

Activity recording is turned off.

Turn recording back on

See more...