Premium
Sucrose phosphate synthase plays a key role in boron‐promoted sucrose synthesis in tobacco leaves
Author(s) -
Shi YongChun,
Sun Bo,
Liu WeiQun
Publication year - 2012
Publication title -
journal of plant nutrition and soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 1436-8730
DOI - 10.1002/jpln.201100423
Subject(s) - sucrose , fructose , sucrose phosphate synthase , chemistry , sucrose synthase , phosphate , biochemistry , starch , boron , enzyme , carbohydrate , food science , invertase , organic chemistry
Boron (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.