6533b821fe1ef96bd127c2af
RESEARCH PRODUCT
Protein phosphorylation is induced in tobacco cells by the elicitor cryptogein
Pierre RicciAlain PuginFabrice MartinMarie-paute ViardJean-pierre Bleinsubject
0106 biological sciencesPhysiologymedicine.drug_classNicotiana tabacumPlant Sciencemacromolecular substances01 natural sciences[SDV.GEN.GPL]Life Sciences [q-bio]/Genetics/Plants genetics03 medical and health sciences[SDV.GEN.GPL] Life Sciences [q-bio]/Genetics/Plants geneticsGeneticsmedicineStaurosporineProtein phosphorylationComputingMilieux_MISCELLANEOUS030304 developmental biology0303 health sciencesbiologyPhytophthora cryptogeafood and beveragesCULTURE DE TISSUSProtein kinase inhibitorbiology.organism_classificationElicitorBiochemistryCell culturePhosphorylation010606 plant biology & botanymedicine.drugResearch Articledescription
Changes in plasmalemma ion fluxes were observed when tobacco (Nicotiana tabacum) cells were treated with cryptogein, a proteinaceous elicitor from Phytophthora cryptogea. A strong alkalization of the culture medium, accompanied by a leakage of potassium, was induced within a few minutes of treatment. These effects reached a maximum after 30 to 40 min and lasted for several hours. This treatment also resulted in a rapid, but transient, production of activated oxygen species. All these physiological responses were fully sensitive to staurosporine, a known protein kinase inhibitor. Furthermore, a study of protein phosphorylation showed that cryptogein induced a staurosporine-sensitive phosphorylation of several polypeptides. These data suggest that phosphorylated proteins may be essential for the transduction of elicitor signals.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1994-04-01 |