Abiotic stress tolerance mediated by protein ubiquitination.
Plant growth and development is largely influenced by ubiquitin-mediated regulation of protein stability. Specificity of the ubiquitination pathway is controlled mainly by the substrate-recruiting E3 ubiquitin ligases, and consequently, E3 ligases control numerous cellular processes. Recent evidence that ubiquitination plays a critical role in regulating plant responses to abiotic stresses has launched intensive efforts to identify E3 ligases that mediate plant tolerance of adverse environmental conditions. Most stress-related E3 ligases identified to date facilitate responses to environmental stimuli by modulating the abundance of key downstream stress-responsive transcription factors. In this review, the regulatory roles of ubiquitin during the plant's response to abiotic stress are summarized and highlighted.
Department of Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada.
Wendy J
WJ
Lyzenga
Sophia L
SL
Stone
D000040:Abscisic Acid / Q000378:metabolism; D000222:Adaptation, Physiological / Q000502:physiology*; D018506:Gene Expression Regulation, Plant / Q000502:physiology; D010940:Plant Proteins / Q000378:metabolism*; D010944:Plants / Q000378:metabolism*; D046988:Proteasome Endopeptidase Complex / Q000378:metabolism; D055550:Protein Stability; D015398:Signal Transduction / Q000502:physiology; D013312:Stress, Physiological / Q000502:physiology; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism; D044767:Ubiquitin-Protein Ligases / Q000378:metabolism*; D054875:Ubiquitination / Q000502:physiology*
D010940:Plant Proteins; D014157:Transcription Factors; D000040:Abscisic Acid; D044767:Ubiquitin-Protein Ligases; D046988:Proteasome Endopeptidase Complex; C061553:ATP dependent 26S protease