Ubiquitylation in plants: signaling hub for the integration of environmental signals

被引:79
作者
Miricescu, Alexandra [1 ]
Goslin, Kevin [1 ]
Graciet, Emmanuelle [1 ]
机构
[1] Natl Univ Ireland Maynooth, Dept Biol, Maynooth, Kildare, Ireland
基金
爱尔兰科学基金会;
关键词
Abiotic stress; biotic stress; E3 ubiquitin ligase; environmental cues; ubiquitin code; ubiquitin system; END RULE PATHWAY; E3 UBIQUITIN LIGASE; F-BOX PROTEINS; DISEASE RESISTANCE1 PROTEIN; DEPENDENT DEFENSE PATHWAYS; BHLH TRANSCRIPTION FACTORS; ARABIDOPSIS DWD PROTEIN; SALICYLIC-ACID; ETHYLENE INSENSITIVE3; PROTEASOME SYSTEM;
D O I
10.1093/jxb/ery165
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
A fundamental question in biology is how organisms integrate the plethora of environmental cues that they perceive to trigger a co-ordinated response. The regulation of protein stability, which is largely mediated by the ubiquitin-proteasome system in eukaryotes, plays a pivotal role in these processes. Due to their sessile lifestyle and the need to respond rapidly to a multitude of environmental factors, plants are thought to be especially dependent on proteolysis to regulate cellular processes. In this review, we present the complexity of the ubiquitin system in plants, and discuss the relevance of the proteolytic and non-proteolytic roles of this system in the regulation and co-ordination of plant responses to environmental signals. We also discuss the role of the ubiquitin system as a key regulator of plant signaling pathways. We focus more specifically on the functions of E3 ligases as regulators of the jasmonic acid (JA), salicylic acid ( SA), and ethylene hormone signaling pathways that play important roles to mount a co-ordinated response to multiple environmental stresses. We also provide examples of new players in this field that appear to integrate different cues and signaling pathways.
引用
收藏
页码:4511 / 4527
页数:17
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