The Molecular Mechanism of Long-distance Sugar Transport in Plants
? These authors contributed equally to this paper
Received date: 2014-03-06
Accepted date: 2014-04-14
Online published: 2015-04-09
Abstract Plants use CO2 to synthesize carbohydrates in plant leaves, sheaths and green stems during photosynthesis. After long-distance transport, carbohydrates are consumed or stored in sink tissues such as developing tissues, pollen and fruits. Sucrose is the main type of long-distance-transported carbohydrate in higher plants. Transport of sucrose from the source to sink includes phloem loading in the source tissues, transport in vascular bundles, and phloem unloading in sink tissues. Genetics and molecular biology experiments showed that sucrose transporters, invertases and monosaccharide transporters play an important role in loading and unloading carbohydrates. We review the current literatures on carbohydrate transport and the molecular mechanisms of regulating transport.
Yi Zhang, Dabing Zhang, Man Liu . The Molecular Mechanism of Long-distance Sugar Transport in Plants[J]. Chinese Bulletin of Botany, 2015 , 50(1) : 107 -121 . DOI: 10.3724/SP.J.1259.2015.00107
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