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Sucrose phosphate synthase plays a key role in boron-promoted sucrose synthesis in tobacco leaves
Yong-Chun Shi,
Bo Sun,
Wei-Qun Liu,
Yong-Chun Shi
Life Science College, Henan Agricultural University, Zhengzhou 450002, China
Search for more papers by this authorBo Sun
Life Science College, Henan Agricultural University, Zhengzhou 450002, China
Search for more papers by this authorCorresponding Author
Wei-Qun Liu
Life Science College, Henan Agricultural University, Zhengzhou 450002, China
Life Science College, Henan Agricultural University, Zhengzhou 450002, ChinaSearch for more papers by this authorYong-Chun Shi,
Bo Sun,
Wei-Qun Liu,
Yong-Chun Shi
Life Science College, Henan Agricultural University, Zhengzhou 450002, China
Search for more papers by this authorBo Sun
Life Science College, Henan Agricultural University, Zhengzhou 450002, China
Search for more papers by this authorCorresponding Author
Wei-Qun Liu
Life Science College, Henan Agricultural University, Zhengzhou 450002, China
Life Science College, Henan Agricultural University, Zhengzhou 450002, ChinaSearch for more papers by this authorAbstract
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.
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