Abstract
AbstractBoron (B) is essential for plant growth. The mechanism of B interacting with sucrose transport is not fully understood. In detached tobacco leaves treated with increasing B concentrations, the concentrations of sucrose, glucose, fructose, and starch as well as the activities of sucrose phosphate synthetase (SPS), sucrose synthetase (SS), and α‐amylase were quantified. In addition, the expression levels of sucrose transporters (SUT1 and SUT4) were determined. The data presented here suggest that B promotes the sucrose concentration and transport via elevation of SPS activity, decrease of SS activity, and increase of SUT4 expression level.
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