Photosynthesis pp 703-729 | Cite as

Sucrose Transport in Higher Plants: From Source to Sink

  • Naohiro Aoki
  • Tatsuro Hirose
  • Robert T. Furbank
Part of the Advances in Photosynthesis and Respiration book series (AIPH, volume 34)


Sucrose transport in plants has been as area of intense interest for many years, particularly following the cloning of the first sucrose/proton symporter, or sucrose transporter, from spinach more than 15 years ago. Much debate and research has focused on phloem loading, particularly the issue of apoplasmic versus symplasmic pathways of loading and in the apoplasmic loaders, on the location of the sucrose transporter protein and mRNA. This chapter focuses on pointing out the remaining unanswered questions in phloem loading and sucrose transport in general rather than extensively reviewing the literature. We discuss in more detail the long-distance transport pathway from source to sink and post-phloem unloading in sink tissue such as dicot seed, cereal grain, sink leaves, roots and tubers.


Sieve Tube Minor Vein Hexose Transporter Sucrose Transport Sink Tissue 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


CC –

Companion cell;

CF –



Green fluorescent protein;


Para-chloromercuribenzylsulphonic acid;


Raffinose-family oligosaccharide;

SE –

Sieve element;


Sucrose transporter



We wish to acknowledge the help and encouragement of all our colleagues in sugar transport research, particularly those that made data available to us pre-publication.


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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Naohiro Aoki
    • 1
    • 2
  • Tatsuro Hirose
    • 3
  • Robert T. Furbank
    • 1
  1. 1.CSIRO Plant IndustryCanberraAustralia
  2. 2.Graduate School of Agricultural and Life SciencesThe University of TokyoTokyoJapan
  3. 3.National Agricultural Research CenterJoetsuJapan

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