Jasmonic acid induces rapid changes in carbon transport and partitioning inPopulus

• DOI: 10.1111/j.1469-8137.2005.01388.x
• Publication Date: 2005-06-09T16:00:30Z
• Authors: Benjamin A. Babst; Richard A. Ferrieri; Dennis W. Gray; Manuel Lerdau; David J. Schlyer; Michael Schueller; Michael R. Thorpe; Colin M. Orians
• Keywords: Jasmonic acid

Summary Here, we tested whether rapid changes in carbohydrate transport and partitioning to storage organs would be induced by jasmonic acid (JA), a plant‐produced signal of herbivore attack known induce resistance. Carbon‐11, introduced as 11 CO 2 , was used track real‐time nondestructively Populus species before 12 h after application JA single leaf. Jasmonic resulted more [ C]‐photosynthate export from both local systemic leaves, well greater the stem roots. In tremuloides following treatment, leaf starch decreased, but there no change photosynthetic rates or soluble sugar concentration, indicating that recent photosynthate diverted accumulation other plant organs. Increasing supply roots stems may shield resources folivorous predators, also facilitate nutrient uptake, ultimately lead tolerance, either enhancing regrowth capacity replacing nutrients consumed herbivores.