Source-sink coupling in young barley plants and control of phloem loading Export

@article{citeulike:4291561, abstract = {Phloem loading of carbohydrate within a mature exporting leaf of a barley seedling is shown to respond quickly to a change in the temperature of the root and the shoot meristem. This is interpreted as a close coupling between source supply and sink demand for carbohydrate, through the hydrostatic pressure gradient linking source and sink generated by the solute concentration within the sieve tubes. This interpretation was tested by using anoxia to alter solute concentration within the sieve tubes of one region of a leaf while observing phloem loading in an adjacent region. Responses to anoxia could not be explained by the above model, suggesting that either this model is incorrect or other signalling pathways are involved. There is evidence in the literature for coarse control of phloem loading but no evidence was found of fine control by solute content of the loaded sieve elements. 10.1093/jxb/erf003}, author = {Minchin, P. E. H. and Thorpe, M. R. and Farrar, J. F. and Koroleva, O. A.}, citeulike-article-id = {4291561}, citeulike-linkout-0 = {http://dx.doi.org/10.1093/jxb/erf003}, citeulike-linkout-1 = {http://jxb.oxfordjournals.org/cgi/content/abstract/53/374/1671}, citeulike-linkout-2 = {http://view.ncbi.nlm.nih.gov/pubmed/12096106}, citeulike-linkout-3 = {http://www.hubmed.org/display.cgi?uids=12096106}, day = {1}, doi = {10.1093/jxb/erf003}, journal = {J. Exp. Bot.}, keywords = {loading}, month = {July}, number = {374}, pages = {1671--1676}, posted-at = {2009-04-08 18:09:43}, priority = {2}, title = {Source-sink coupling in young barley plants and control of phloem loading}, url = {http://dx.doi.org/10.1093/jxb/erf003}, volume = {53}, year = {2002} }

TY - JOUR ID - citeulike:4291561 L3 - citeulike-article-id:4291561 N2 - Phloem loading of carbohydrate within a mature exporting leaf of a barley seedling is shown to respond quickly to a change in the temperature of the root and the shoot meristem. This is interpreted as a close coupling between source supply and sink demand for carbohydrate, through the hydrostatic pressure gradient linking source and sink generated by the solute concentration within the sieve tubes. This interpretation was tested by using anoxia to alter solute concentration within the sieve tubes of one region of a leaf while observing phloem loading in an adjacent region. Responses to anoxia could not be explained by the above model, suggesting that either this model is incorrect or other signalling pathways are involved. There is evidence in the literature for coarse control of phloem loading but no evidence was found of fine control by solute content of the loaded sieve elements. 10.1093/jxb/erf003 IS - 374 JF - J. Exp. Bot. EP - 1676 TI - Source-sink coupling in young barley plants and control of phloem loading VL - 53 SP - 1671 KW - loading AU - Minchin, PEH AU - Thorpe, MR AU - Farrar, JF AU - Koroleva, OA PY - 2002/07/01/ UR - http://dx.doi.org/10.1093/jxb/erf003 ER -