ArticleThe Plant cell2008
Arabidopsis PUB22 and PUB23 are homologous U-Box E3 ubiquitin ligases that play combinatory roles in response to drought stress.
Article in The Plant cell, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 123 papers.
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123 citing papers in PubMed, 262 citations in OpenAlex.
- A GWAS-identified U-box E3 ligase MsPUB6 is positively regulated by MsDREB1C and contributes to drought tolerance in alfalfa.Plant physiology · 2026Article
- Genome-wide identification and expression analysis of chickpea U-box E3 ligases identifies CaPUB4 and CaPUB16 as candidate responsive genes for abiotic stress tolerance.Journal of applied genetics · 2026Article
- The NAC17-PUB30 module enhances drought stress tolerance by regulating adventitious root development in apple.Plant physiology · 2026Article
- Ubiquitin ligase HcPUB30 targets HcWRKY1 to regulate monoterpenoids synthesis in Hedychium coronarium.BMC plant biology · 2026Article
- Article
- The alfalfa U-box E3 ligase MsPUB210 interacts with MsICE1 and positively regulates cold tolerance in transgenic Arabidopsis.Frontiers in plant science · 2026Article
- Dissecting the genetic basis underlying drought tolerance at different development stages in soybean.Frontiers in plant science · 2026Article
- Heterologous expression of soybean E3 ubiquitin ligase Glycine max Ring Zinc Finger 1-Like 1 (GmRZFL1) negatively responds to osmotic stress by participating in the abscisic acid signaling pathway in Arabidopsis.BMC plant biology · 2025Article
- Genome-wide identification and functional analysis of U-box E3 ubiquitin ligases gene family related to drought stress response in Musa acuminata.BMC plant biology · 2025Article
- Genome-Wide Identification, Characterization, and Expression Analysis of the U-Box Gene Family in Cucumber (Plants (Basel, Switzerland) · 2025Article
- Review
- Wheat E3 ligasePhysiology and molecular biology of plants : an international journal of functional plant biology · 2025Article
- The E3 ligase OsPUB33 controls rice grain size and weight by regulating the OsNAC120-BG1 module.The Plant cell · 2024Article
- Genome-Wide Identification and Expression Analysis of the Alfalfa (International journal of molecular sciences · 2024Article
- Identification of a novel locus qGW12/OsPUB23 regulating grain shape and weight in rice (Oryza sativa L.).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2024Article
- The genome of Eleocharis vivipara elucidates the genetics of CJournal of integrative plant biology · 2024Article
- Deciphering the mechanism of E3 ubiquitin ligases in plant responses to abiotic and biotic stresses and perspectives on PROTACs for crop resistance.Plant biotechnology journal · 2024Review
- Adaptive divergence, historical population dynamics, and simulation of suitable distributions for Picea Meyeri and P. Mongolica at the whole-genome level.BMC plant biology · 2024Article
- RhMED15a-like, a subunit of the Mediator complex, is involved in the drought stress response in Rosa hybrida.BMC plant biology · 2024Article
- Modulation of early gene expression responses to water deprivation stress by the E3 ubiquitin ligase ATL80: implications for retrograde signaling interplay.BMC plant biology · 2024Article
63 more citing papers are in PubMed but not listed here.
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5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Ubiquitination is involved in diverse cellular processes in higher plants. In this report, we describe Arabidopsis thaliana PUB22 and PUB23, two homologous U-box-containing E3 ubiquitin (Ub) ligases. The PUB22 and PUB23 genes were rapidly and coordinately induced by abiotic stresses but not by abscisic acid. PUB22- and PUB23-overexpressing transgenic plants were hypersensitive to drought stress. By contrast, loss-of-function pub22 and pub23 mutant plants were significantly more drought-tolerant, and a pub22 pub23 double mutant displayed even greater drought tolerance. These results indicate that PUB22 and PUB23 function as negative regulators in the water stress response. Yeast two-hybrid, in vitro pull-down, and in vivo coimmunoprecipitation experiments revealed that PUB22 and PUB23 physically interacted with RPN12a, a subunit of the 19S regulatory particle (RP) in the 26S proteasome. Bacterially expressed RPN12a was effectively ubiquitinated in a PUB-dependent fashion. RPN12a was highly ubiquitinated in 35S:PUB22 plants, but not in pub22 pub23 double mutant plants, consistent with RPN12a being a substrate of PUB22 and PUB23 in vivo. In water-stressed wild-type and PUB-overexpressing plants, a significant amount of RPN12a was dissociated from the 19S RP and appeared to be associated with small-molecular-mass protein complexes in cytosolic fractions, where PUB22 and PUB23 are localized. Overall, our results suggest that PUB22 and PUB23 coordinately control a drought signaling pathway by ubiquitinating cytosolic RPN12a in Arabidopsis.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.