« Previous AbstractA facile synthesis of the sex pheromone of the red bollworm moth from 10-undecen-1-ol    Next AbstractEffects of different growing systems and fertiliser rates on attractiveness of maize crop to beetles of Diabrotica virgifera virgifera LeConte and larvae dammage »

New Phytol

Title:		Jasmonic acid induces rapid changes in carbon transport and partitioning in Populus
Author(s):		Babst BA; Ferrieri RA; Gray DW; Lerdau M; Schlyer DJ; Schueller M; Thorpe MR; Orians CM;
Address:		"Department of Biology, Tufts University, Medford, MA 02155, USA. ben.babst@tufts.edu"
Journal Title:		New Phytol
Year:		2005
Volume:		167
Issue:		1
Page Number:		63 - 72
DOI:		10.1111/j.1469-8137.2005.01388.x
ISSN/ISBN:		0028-646X (Print) 0028-646X (Linking)
Abstract:		"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 to induce resistance. Carbon-11, introduced as (11)CO(2), was used to track real-time carbohydrate transport and partitioning nondestructively in Populus species before and 12 h after application of JA to a single leaf. Jasmonic acid resulted in more rapid [(11)C]-photosynthate export from both local and systemic leaves, as well as greater partitioning of [(11)C]-photosynthate to the stem and roots. In Populus tremuloides, following JA treatment, leaf starch decreased, but there was no change in photosynthetic rates or leaf soluble sugar concentration, indicating that recent photosynthate was diverted from starch accumulation in the leaf to other plant organs. Increasing the supply of photosynthate to roots and stems may shield resources from folivorous predators, and may also facilitate both storage and nutrient uptake, and ultimately lead to greater tolerance, either by enhancing regrowth capacity or by replacing nutrients consumed by herbivores"
Keywords:		Biological Transport/drug effects Carbohydrates/biosynthesis Carbon Radioisotopes/*metabolism Cyclopentanes/*pharmacology Oxylipins Photosynthesis Plant Growth Regulators/*pharmacology Plant Leaves/metabolism Populus/drug effects/*metabolism Signal Transd;
Notes:		"MedlineBabst, Benjamin A Ferrieri, Richard A Gray, Dennis W Lerdau, Manuel Schlyer, David J Schueller, Michael Thorpe, Michael R Orians, Colin M eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. England 2005/06/14 New Phytol. 2005 Jul; 167(1):63-72. doi: 10.1111/j.1469-8137.2005.01388.x"