ArticlePlanta2011
Arabidopsis thaliana transcriptional co-activators ADA2b and SGF29a are implicated in salt stress responses.
Article in Planta, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.
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Who cites it
28 citing papers in PubMed, 92 citations in OpenAlex.
- Genome-wide mapping of main histone modifications and coordination regulation of metabolic genes under salt stress in pea (Horticulture research · 2024Article
- Roles of Histone Acetylation and Deacetylation in Root Development.Plants (Basel, Switzerland) · 2024Review
- Review
- Blue light perceiving CRY proteins: protecting plants from DNA damage.Plant cell reports · 2024Article
- Genome-wide investigation of histone acetyltransferase gene family and its responses to biotic and abiotic stress in foxtail millet (Setaria italica [L.] P. Beauv).BMC plant biology · 2022Article
- Role of Epigenetics in Modulating Phenotypic Plasticity against Abiotic Stresses in Plants.International journal of genomics · 2022Review
- Progressive Genomic Approaches to Explore Drought- and Salt-Induced Oxidative Stress Responses in Plants under Changing Climate.Plants (Basel, Switzerland) · 2021Review
- Review
- Conservation and diversity of the eukaryotic SAGA coactivator complex across kingdoms.Epigenetics & chromatin · 2021Review
- Methylation-directed acetylation of histone H3 regulates developmental sensitivity to histone deacetylase inhibition.Nucleic acids research · 2021Article
- Article
- The Histone Acetyltransferase GCN5 and the Associated Coactivators ADA2: From Evolution of the SAGA Complex to the Biological Roles in Plants.Plants (Basel, Switzerland) · 2021Review
- The biochemical and genetic discovery of the SAGA complex.Biochimica et biophysica acta. Gene regulatory mechanisms · 2021Review
- Salt stress and salt shock differently affect DNA methylation in salt-responsive genes in sugar beet and its wild, halophytic ancestor.PloS one · 2021Article
- Histone Modifications Form Epigenetic Regulatory Networks to Regulate Abiotic Stress Response.Plant physiology · 2020Article
- Redox Balance-DDR-miRNA Triangle: Relevance in Genome Stability and Stress Responses in Plants.Frontiers in plant science · 2019Review
- Comparative analysis of Histone modifications and DNA methylation at OsBZ8 locus under salinity stress in IR64 and Nonabokra rice varieties.Plant molecular biology · 2017Article
- Multilevel Regulation of Abiotic Stress Responses in Plants.Frontiers in plant science · 2017Review
- Chromatin-Based Epigenetic Regulation of Plant Abiotic Stress Response.Current genomics · 2016Article
- High light intensity plays a major role in emergence of population level variation in Arabidopsis thaliana along an altitudinal gradient.Scientific reports · 2016Article
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The transcriptional co-activator ADA2b is a component of GCN5-containing complexes in eukaryotes. In Arabidopsis, ada2b mutants result in pleiotropic developmental defects and altered responses to low-temperature stress. SGF29 has recently been identified as another component of GCN5-containing complexes. In the Arabidopsis genome there are two orthologs of yeast SGF29, designated as SGF29a and SGF29b. We hypothesized that, in Arabidopsis, one or both SGF29 proteins may work in concert with ADA2b to regulate genes in response to abiotic stress, and we set out to explore the role of SGF29a and ADA2b in salt stress responses. In root growth and seed germination assays, sgf29a-1 mutants were more resistant to salt stress than their wild-type counterparts, whereas ada2b-1 mutant was hypersensitive. The sgf29a;ada2b double mutant displayed similar phenotypes to ada2b-1 mutant with reduced salt sensitivity. The expression of several abiotic stress-responsive genes was reduced in ada2b-1 mutants after 3 h of salt stress in comparison with sgf29a-1 and wild-type plants. In the sgf29a-1;ada2b-1 double mutant, the salt-induced gene expression was affected similarly to ada2b-1. These results suggest that under salt stress the function of SGF29a was masked by ADA2b and perhaps SGF29a could play an auxiliary role to ADA2b action. In chromatin immunoprecipitation assays, reduced levels of histone H3 and H4 acetylation in the promoter and coding region of COR6.6, RAB18, and RD29b genes were observed in ada2b-1 mutants relative to wild-type plants. In conclusion, ADA2b positively regulates salt-induced gene expression by maintaining the locus-specific acetylation of histones H4 and H3.
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