ArticlePlant physiology2008
Overexpression of AtMYB44 enhances stomatal closure to confer abiotic stress tolerance in transgenic Arabidopsis.
Article in Plant physiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 315 papers.
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315 citing papers in PubMed, 778 citations in OpenAlex.
- MYB transcription factors in plant cold stress adaptation: integrating phylogeny, signaling networks, and metabolic regulation.Physiology and molecular biology of plants : an international journal of functional plant biology · 2026Review
- Identification of the R2R3-MYB gene family in wild jujube (Ziziphus jujuba var. spinosa) and analysis of its expression under drought stress.BMC plant biology · 2026Article
- The Transcription Factor DPB Confers Antiviral Defence Against Potato Virus X by Modulating MYB-Dependent Signalling.Molecular plant pathology · 2026Article
- Haplotype-resolved genome assembly sheds light on the evolutionary history of autohexaploid Tripidium arundinaceum.Nature communications · 2026Article
- Overexpression of the EfMYB124 gene from Erianthus fulvus enhances tolerance to low temperature and drought in Arabidopsis thaliana.BMC plant biology · 2026Article
- Mechanistic insights into adventitious root formation in Cinnamomum kanehirae stem cuttings based on phenotypic, physiological, and transcriptomic analyses.BMC plant biology · 2026Article
- Fine-mapping reveals BcNAC153 act as a negative regulator controlling high temperature tolerance in Brassica rapa.Molecular horticulture · 2026Article
- Identification and analysis of the MYB transcription factors against seawater tolerance in daylily (Hemerocallis fulva L.).Scientific reports · 2026Article
- RrMYB2 Regulates Drought Stress via RrJMJ12-Dependent Epigenetic Modification in Rosa rugosa.Plant biotechnology journal · 2026Article
- PbrMYB31 enhances abiotic stress tolerance by promoting suberin biosynthesis in Arabidopsis.BMC plant biology · 2026Article
- An R2R3-MYB transcription factor TgMYB44 positively regulates petal senescence by enhancing ABA biosynthesis in tulip.Plant cell reports · 2026Article
- Overexpression of IbGAD4 enhances salt tolerance in sweetpotato by modulating the GABA pathway.BMC plant biology · 2026Article
- Genome-wide identification, structural characterization, and gene expression analysis of the MYB transcription factor family in faba bean (Vicia faba L.).BMC plant biology · 2026Article
- SlMYB2: an R2R3-MYB transcription factor enhancing drought, salt, and cadmium tolerance in Solanum lycopersicum.Plant cell reports · 2026Article
- Article
- Comparative transcriptomic and biochemical analyses reveal candidate regulatory genes associated with early drought response signatures in contrasting rapeseed (Brassica napus) cultivars.Scientific reports · 2025Article
- The KH-domain genes FLK and HOS5 integrate flowering and stress responses in Arabidopsis thaliana.Journal of experimental botany · 2025Article
- Ectopic Expression of a Poplar GenePlants (Basel, Switzerland) · 2025Article
- The TaMYB44-TaMYB1 module regulates grain amylose biosynthesis and flour viscosity in wheat.Plant communications · 2025Article
- Article
255 more citing papers are in PubMed but not listed here.
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Authors and funding
9 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
AtMYB44 belongs to the R2R3 MYB subgroup 22 transcription factor family in Arabidopsis (Arabidopsis thaliana). Treatment with abscisic acid (ABA) induced AtMYB44 transcript accumulation within 30 min. The gene was also activated under various abiotic stresses, such as dehydration, low temperature, and salinity. In transgenic Arabidopsis carrying an AtMYB44 promoter-driven beta-glucuronidase (GUS) construct, strong GUS activity was observed in the vasculature and leaf epidermal guard cells. Transgenic Arabidopsis overexpressing AtMYB44 is more sensitive to ABA and has a more rapid ABA-induced stomatal closure response than wild-type and atmyb44 knockout plants. Transgenic plants exhibited a reduced rate of water loss, as measured by the fresh-weight loss of detached shoots, and remarkably enhanced tolerance to drought and salt stress compared to wild-type plants. Microarray analysis and northern blots revealed that salt-induced activation of the genes that encode a group of serine/threonine protein phosphatases 2C (PP2Cs), such as ABI1, ABI2, AtPP2CA, HAB1, and HAB2, was diminished in transgenic plants overexpressing AtMYB44. By contrast, the atmyb44 knockout mutant line exhibited enhanced salt-induced expression of PP2C-encoding genes and reduced drought/salt stress tolerance compared to wild-type plants. Therefore, enhanced abiotic stress tolerance of transgenic Arabidopsis overexpressing AtMYB44 was conferred by reduced expression of genes encoding PP2Cs, which have been described as negative regulators of ABA signaling.
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