Anion channels: master switches of stress responses

被引:116
作者
Roelfsema, M. Rob G. [1 ]
Hedrich, Rainer [1 ,2 ]
Geiger, Dietmar [1 ]
机构
[1] Univ Wurzburg, Julius von Sachs Inst Biosci, Bioctr, D-97082 Wurzburg, Germany
[2] King Saud Univ KSU, Riyadh, Saudi Arabia
关键词
S-TYPE ANION; OST1; PROTEIN-KINASE; ABSCISIC-ACID; PLASMA-MEMBRANE; GUARD-CELLS; STOMATAL CLOSURE; BLUE-LIGHT; SIGNAL-TRANSDUCTION; ALUMINUM RESISTANCE; METHYL JASMONATE;
D O I
10.1016/j.tplants.2012.01.009
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
During stress, plant cells activate anion channels and trigger the release of anions across the plasma membrane. Recently, two new gene families have been identified that encode major groups of anion channels. The SLAC/SLAH channels are characterized by slow voltage-dependent activation (S-type), whereas ALMT genes encode rapid-activating channels (R-type). Both S- and R-type channels are stimulated in guard cells by the stress hormone ABA, which leads to stomatal closure. Besides their role in ABA-dependent stomatal movement, anion channels are also activated by biotic stress factors such as microbe-associated molecular patterns (MAMPs). Given that anion channels occur throughout the plant kingdom, they are likely to serve a general function as master switches of stress responses.
引用
收藏
页码:221 / 229
页数:9
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