caa a22 4500 397521774 CHVBK 20180308164634.0 cr unu---uuuuu 161202e199512 xx s 000 0 eng 10.1093/jxb/46.12.1859 doi (NATIONALLICENCE)oxford-10.1093/jxb/46.12.1859 Carbon import into barley roots: effects of sugars and relation to cell expansion [Elektronische Daten] [J. F. Farrar, P. E. H. Minchin, M. R. Thorpe] The import of photosynthate labelled with 11C from a source leaf into the two halves of a split root system of an intact barley plant was studied. When applied to one half of a split root system sugars that are absorbed and metabolized reduce subsequent import of 11C into that root half. The non-metabolized sugar analogue 3-O-methyl glucose has no effect on import, whilst mannose and 2-deoxyglucose inhibit both root elongation and import of 11C. EDTA, PCMBS, and apoplastic pH in the range 4-7, have little effect on partitioning. These results are interpreted in terms of a suggestion that phloem unloads directly into expanding cells in the elongation zone of root tips. © Oxford University Press Research Papers nationallicence Carbon partitioning nationallicence roots nationallicence 11C nationallicence sucrose nationallicence phloem nationallicence sugars nationallicence cell expansion nationallicence Farrar J. F. School of Biological Sciences, University of Wales Bangor, Gwynedd, UK aut Minchin P. E. H. Horticulture and Food Research Institute of New Zealand Ltd PO Box 31-313, Lower Hutt, New Zealand aut Thorpe M. R. Horticulture and Food Research Institute of New Zealand Ltd PO Box 31-313, Lower Hutt, New Zealand aut Journal of Experimental Botany Oxford University Press 46/12(1995-12), 1859-1865 0022-0957 46:12<1859 1995 46 exbotj https://doi.org/10.1093/jxb/46.12.1859 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/jxb/46.12.1859 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Farrar J. F. School of Biological Sciences, University of Wales Bangor, Gwynedd, UK aut NATIONALLICENCE 700 1- Minchin P. E. H. Horticulture and Food Research Institute of New Zealand Ltd PO Box 31-313, Lower Hutt, New Zealand aut NATIONALLICENCE 700 1- Thorpe M. R. Horticulture and Food Research Institute of New Zealand Ltd PO Box 31-313, Lower Hutt, New Zealand aut NATIONALLICENCE 773 0- Journal of Experimental Botany Oxford University Press 46/12(1995-12), 1859-1865 0022-0957 46:12<1859 1995 46 exbotj Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford