caa a22 4500 477100074 CHVBK 20180405111538.0 cr unu---uuuuu 170330e19960901xx s 000 0 eng 10.1007/BF00196648 doi (NATIONALLICENCE)springer-10.1007/BF00196648 The pathway for systemic electrical signal conduction in the wounded tomato plant [Elektronische Daten] [Jeremy Rhodes, John Thain, David Wildon] The pathway of a systemic electrical signal possibly linking wounding and the systemic synthesis of proteinase inhibitor was investigated in tomato (Lycopersicon esculentumMill. cv. Moneymaker) plants. Heat, causing wounding to a cotyledon, was used to induce both a travelling electrical signal and systemic proteinase inhibitor activity. Intracellular recordings of changes in the membrane potential of different cell types were measured in the petiole of leaf 1, the first true leaf, and impaled cells were identified by injection of fluorescent dye (Lucifer Yellow CH). No difference was found between the membrane potentials of the different cell types; the mean membrane potential of all the cell types was -148 ± 3 mV. Only sieve-tube elements and companion cells produced large (79 ± 3.3 mV) action-potential-like depolarisations following wounding, although smaller (23 ± 1.6 mV) depolarisations were observed in other cell types. It was concluded that the electrical signal possibly linking a wound stimulus in a cotyledon with the induction of systemic proteinase inhibitor synthesis was propagated in the sieve-tube element/companion cell complex. Springer-Verlag, 1996 Wound response nationallicence Electrical signal pathway nationallicence Lycopersicon nationallicence LYCH : Lucifer Yellow CH nationallicence PI : proteinase inhibitor nationallicence Rhodes Jeremy School of Biological Sciences, University of East Anglia, NR4 7TJ, Norwich, UK aut Thain John School of Biological Sciences, University of East Anglia, NR4 7TJ, Norwich, UK aut Wildon David School of Biological Sciences, University of East Anglia, NR4 7TJ, Norwich, UK aut Planta Springer-Verlag 200/1(1996-09-01), 50-57 0032-0935 200:1<50 1996 200 425 https://doi.org/10.1007/BF00196648 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00196648 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rhodes Jeremy School of Biological Sciences, University of East Anglia, NR4 7TJ, Norwich, UK aut NATIONALLICENCE 700 1- Thain John School of Biological Sciences, University of East Anglia, NR4 7TJ, Norwich, UK aut NATIONALLICENCE 700 1- Wildon David School of Biological Sciences, University of East Anglia, NR4 7TJ, Norwich, UK aut NATIONALLICENCE 773 0- Planta Springer-Verlag 200/1(1996-09-01), 50-57 0032-0935 200:1<50 1996 200 425 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer