MPK11-a fourth elicitor-responsive mitogen-activated protein kinase in Arabidopsis thaliana

被引:28
作者
Eschen-Lippold, Lennart [1 ]
Bethke, Gerit [2 ]
Palm-Forster, Mieder A. T. [1 ]
Pecher, Pascal [1 ]
Bauer, Nicole [1 ]
Glazebrook, Jane [2 ]
Scheel, Dierk [1 ]
Lee, Justin [1 ]
机构
[1] Leibniz Inst Plant Biochem, Halle, Germany
[2] Univ Minnesota, Dept Plant Biol, Microbial & Plant Genet Inst, St Paul, MN USA
关键词
MAP kinase; defense; signal transduction; pathogen-associated molecular pattern;
D O I
10.4161/psb.21323
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Recognition of pathogen attack or elicitation with pathogen-associated molecular patterns (PAMPs) leads to defense signaling that includes activation of the three mitogen-activated protein kinases (MPKs), MPK3, MPK4 and MPK6 in Arabidopsis. Recently, we demonstrated the activation of a fourth MPK, MPK11, after treatment with flg22, a 22 amino acid PAMP derived from bacterial flagellin. Here, we extended the study by examining elicitation with two other PAMPs, elf18 (derived from bacterial elongation factor EF-Tu) and ch8 (N-acetylchitooctaose derived from fungal chitin). Both PAMPs led to rapid MPK11 transcript accumulation and increased MPK11 kinase activity, suggesting that multiple PAMPs (or stresses) can activate MPK11. However, probably due to functional redundancies, bacteria-induced phytoalexin accumulation does not absolutely require MPK11.
引用
收藏
页码:1203 / 1205
页数:3
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