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Publications - Stress and Develop Biology

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Publications

Ichimura, K.; Shinozaki, K.; Tena, G.; Sheen, J.; Henry, Y.; Champion, A.; Kreis, M.; Zhang, S.; Hirt, H.; Wilson, C.; Heberle-Bors, E.; Ellis, B. E.; Morris, P. C.; Innes, R. W.; Ecker, J. R.; Scheel, D.; Klessig, D. F.; Machida, Y.; Mundy, J.; Ohashi, Y.; Walker, J. C.; Mitogen-activated protein kinase cascades in plants: a new nomenclature Trends Plant Sci. 7, 301-308, (2002) DOI: 10.1016/S1360-1385(02)02302-6

Mitogen-activated protein kinase (MAPK) cascades are universal signal transduction modules in eukaryotes, including yeasts, animals and plants. These protein phosphorylation cascades link extracellular stimuli to a wide range of cellular responses. In plants, MAPK cascades are involved in responses to various biotic and abiotic stresses, hormones, cell division and developmental processes. Completion of the Arabidopsis genome-sequencing project has revealed the existence of 20 MAPKs, 10 MAPK kinases and 60 MAPK kinase kinases. Here, we propose a simplified nomenclature for Arabidopsis MAPKs and MAPK kinases that might also serve as a basis for standard annotation of these gene families in all plants.
Books and chapters

Scheel, D.; Blume, B.; Brunner, F.; Fellbrich, G.; Dalbøge, H.; Hirt, H.; Kauppinen, S.; Kroj, T.; Ligterink, W.; Nürnberger, T.; Tschöpe, M.; Zinecker, H.; zur Nieden, U.; Receptor-mediated signal transduction in plant defense 131-135, (2000)

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Books and chapters

Hirt, H.; Scheel, D.; Receptor-Mediated MAP Kinase Activation in Plant Defense Results and Problems in Cell Differentiation 27, 85-93, (2000) ISBN: 978-3-540-49166-8 DOI: 10.1007/978-3-540-49166-8_7

Plants mount a complex array of defense reactions in response to attack by pathogens. Initiation of these events depends on perception and signal transduction of elicitors, which are plant-derived or pathogenderived signals, that give rise to transcriptional activation of defense-related genes as well as to changes in activities of enzymes involved in cell wall reinforcement and oxygen radical formation. An oligopeptide, identified within a 42 kDa glycoprotein elicitor from Phythophthora sojae, activates in parsley cells typical plant defense reactions, enabling researchers to study plant-pathogen interaction at the single cell level. The oligopeptide elicitor was found to be necessary and sufficient to stimulate a complex defense response in parsley cells, comprising H+/Ca2+ influxes, K+/Cl- effluxes, activation of a mitogen-activated protein (MAP) kinase, an oxidative burst, defense-related gene activation, and phytoalexin formation.
Publications

Ligterink, W.; Kroj, T.; zur Nieden, U.; Hirt, H.; Scheel, D.; Receptor-Mediated Activation of a MAP Kinase in Pathogen Defense of Plants Science 276, 2054-2057, (1997) DOI: 10.1126/science.276.5321.2054

Parsley cells recognize the fungal plant pathogenPhytophthora sojae through a plasma membrane receptor. A pathogen-derived oligopeptide elicitor binds to this receptor and thereby stimulates a multicomponent defense response through sequential activation of ion channels and an oxidative burst. An elicitor-responsive mitogen-activated protein (MAP) kinase was identified that acts downstream of the ion channels but independently or upstream of the oxidative burst. Upon receptor-mediated activation, the MAP kinase is translocated to the nucleus where it might interact with transcription factors that induce expression of defense genes.
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