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Displaying results 1 to 3 of 3.

Publications

Lee, J.; Rudd, J. J.; Calcium-dependent protein kinases: versatile plant signalling components necessary for pathogen defence Trends Plant Sci. 7, 97-98, (2002) DOI: 10.1016/S1360-1385(02)02229-X

Plant stress adaptation often uses changes in cytosolic Ca2+ to bring about responses via changing the activity of Ca2+-sensor proteins including Ca2+-dependent protein kinases (CDPK). The activity of a tobacco CDPK(s) is essential for elicitation of the hypersensitive reaction, a typical plant defence response. Moreover, it is becoming apparent that CDPKs might also facilitate cross-talk between different Ca2+-mediated stress signalling pathways.

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.

Publications

Clemens, S.; Palmgren, M. G.; Krämer, U.; A long way ahead: understanding and engineering plant metal accumulation Trends Plant Sci. 7, 309-315, (2002) DOI: 10.1016/S1360-1385(02)02295-1

Some plants can hyperaccumulate metal ions that are toxic to virtually all other organisms at low dosages. This trait could be used to clean up metal-contaminated soils. Moreover, the accumulation of heavy metals by plants determines both the micronutrient content and the toxic metal content of our food. Complex interactions of transport and chelating activities control the rates of metal uptake and storage. In recent years, several key steps have been identified at the molecular level, enabling us to initiate transgenic approaches to engineer the transition metal content of plants.