AUTHOR=Van Bel Aart J., Helariutta Ykä , Thompson Gary A., Ton Jurriaan , Dinant Sylvie , Ding Biao , Patrick John W. TITLE=Phloem: the integrative avenue for resource distribution, signaling, and defense JOURNAL=Frontiers in Plant Science VOLUME=4 YEAR=2013 URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2013.00471 DOI=10.3389/fpls.2013.00471 ISSN=1664-462X