Abstract
When root tissue of sweet potato (Ipomoea batatas Lam.) was sliced, acid invertase activity, initially absent in freshly sliced tissue, appeared after a 3- to 6-hour lag phase, rapidly reached a maximum in 18 hours, and thereafter decreased. The increase in invertase activity was accompanied by a decrease in sucrose content of the root tissue. Alkaline invertase activity was present in fresh root tissue, but changed little after wounding. Acid invertase in wounded tissue and alkaline invertase in fresh tissue were purified and their properties were investigated. The acid invertase was a ß-fructofuranosidase and was unaffected by substrate or by any of the cations and several metabolites. The alkaline invertase was more specific for sucrose, was inhibited by glucose and glucose 6-phosphate, and displayed non-Michaelis-Menten kinetics.
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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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