PT  - JOURNAL ARTICLE
AU  - Giaquinta, Robert
TI  - Sucrose Hydrolysis in Relation to Phloem Translocation in <em>Beta vulgaris</em>
AID  - 10.1104/pp.60.3.339
DP  - 1977 Sep 01
TA  - Plant Physiology
PG  - 339--343
VI  - 60
IP  - 3
4099  - http://www.plantphysiol.org/content/60/3/339.short
4100  - http://www.plantphysiol.org/content/60/3/339.full
SO  - Plant Physiol.1977 Sep 01; 60
AB  - Asymmetrically labeled sucrose, 14C(fructosyl)sucrose, was used to determine whether sucrose undergoes extracellular hydrolysis during phloem translocation in the sugar beet, Beta vulgaris. In addition, the metabolism of various sugars accumulated and translocated was determined in various regious of the plant. These processes were studied in detached regions as well as in the intact, translocating plant in the source leaf, along the translocation path, and in a rapidly growing sink leaf and storage beet. The data show that, unlike sucrose accumulation into the sink tissue of sugarcane, sucrose is neither hydrolzyed prior to phloem loading or during transit, nor is it extracellularly hydrolyzed during accumulation into sink leaves or the storage beet.