caa a22 4500 606209158 CHVBK 20210128101026.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s00425-014-2230-z doi (NATIONALLICENCE)springer-10.1007/s00425-014-2230-z Leaf wounding or simulated herbivory in young N. attenuata plants reduces carbon delivery to roots and root tips [Elektronische Daten] [Lilian Schmidt, Grégoire Hummel, Björn Thiele, Ulrich Schurr, Michael Thorpe] Main conclusion : In Nicotiana attenuata seedlings, simulated herbivo ry by the specialist Manduca sexta decreases root growth and partitioning of recent photoassimilates to roots in contrast to increased partitioning reported for older plants. Root elongation rate in Nicotiana attenuata has been shown to decrease after leaf herbivory, despite reports of an increased proportion of recently mobilized photoassimilate being delivered towards the root system in many species after similar treatments. To study this apparent contradiction, we measured the distribution of recent photoassimilate within root tissues after wounding or simulated herbivory of N. attenuata leaves. We found no contradiction: herbivory reduced carbon delivery to root tips. However, the speed of phloem transport in both shoot and root, and the delivery of recently assimilated carbon to the entire root system, declined after wounding or simulated herbivory, in contrast with the often-reported increase in root partitioning. We conclude that the herbivory response in N. attenuata seedlings is to favor the shoot and not bunker carbon in the root system. Springer-Verlag Berlin Heidelberg, 2014 11CO2 nationallicence Carbon partitioning nationallicence Manduca sexta nationallicence Nicotiana nationallicence Root growth nationallicence CON : Control treatment nationallicence V tip : Velocity of the root tip nationallicence WOS : Simulated herbivory treatment nationallicence WW : Wounding treatment nationallicence Schmidt Lilian IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425, Jülich, Germany aut Hummel Grégoire IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425, Jülich, Germany aut Thiele Björn IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425, Jülich, Germany aut Schurr Ulrich IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425, Jülich, Germany aut Thorpe Michael IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425, Jülich, Germany aut Planta Springer Berlin Heidelberg 241/4(2015-04-01), 917-928 0032-0935 241:4<917 2015 241 425 https://doi.org/10.1007/s00425-014-2230-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00425-014-2230-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Schmidt Lilian IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425, Jülich, Germany aut NATIONALLICENCE 700 1- Hummel Grégoire IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425, Jülich, Germany aut NATIONALLICENCE 700 1- Thiele Björn IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425, Jülich, Germany aut NATIONALLICENCE 700 1- Schurr Ulrich IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425, Jülich, Germany aut NATIONALLICENCE 700 1- Thorpe Michael IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425, Jülich, Germany aut NATIONALLICENCE 773 0- Planta Springer Berlin Heidelberg 241/4(2015-04-01), 917-928 0032-0935 241:4<917 2015 241 425