ArticleJournal of experimental botany2015
AtDsPTP1 acts as a negative regulator in osmotic stress signalling during Arabidopsis seed germination and seedling establishment.
Article in Journal of experimental botany, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed, 39 citations in OpenAlex.
- Emerging Functions of Protein Tyrosine Phosphatases in Plants.International journal of molecular sciences · 2024Review
- Revealing the Complete Bispecific Phosphatase Genes (DUSPs) across the Genome and Investigating the Expression Patterns of GH_A11G3500 Resistance againstInternational journal of molecular sciences · 2024Article
- Abscisic Acid Enhances Trehalose Content viaPlants (Basel, Switzerland) · 2023Article
- Importance of Tyrosine Phosphorylation in Hormone-Regulated Plant Growth and Development.International journal of molecular sciences · 2022Review
- Effects of Different Chemicals on Sexual Regulation in Persimmon (Frontiers in plant science · 2022Article
- Low molecular weight protein phosphatase APH mediates tyrosine dephosphorylation and ABA response in Arabidopsis.Stress biology · 2022Article
- Elucidating Drought Stress Tolerance in European Oaks Through Cross-Species Transcriptomics.G3 (Bethesda, Md.) · 2019Article
- Involvement of G6PD5 in ABA response during seed germination and root growth in Arabidopsis.BMC plant biology · 2019Article
- Cytosolic Glucose-6-Phosphate Dehydrogenase Is Involved in Seed Germination and Root Growth Under Salinity inFrontiers in plant science · 2019Article
- Transcriptome Analysis Reveals Candidate Genes Associated with Leaf Etiolation of a Cytoplasmic Male Sterility Line in Chinese Cabbage (Brassica Rapa L. ssp. Pekinensis).International journal of molecular sciences · 2018Article
- Central Roles and Regulatory Mechanisms of Dual-Specificity MAPK Phosphatases in Developmental and Stress Signaling.Frontiers in plant science · 2018Review
- Role of Protein Tyrosine Phosphatases in Plants.Current genomics · 2015Article
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Authors and funding
10 authors at 6 institutions in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
Dual-specificity protein phosphatases (DsPTPs) target both tyrosine and serine/threonine residues and play roles in plant growth and development. We have characterized an Arabidopsis mutant, dsptp1, which shows a higher seed germination rate and better root elongation under osmotic stress than the wild type. By contrast, its overexpression line, DsPTP1-OE, shows inhibited seed germination and root elongation; and its complemented line, DsPTP1-Com, resembles the wild type and rescues DsPTP1-OE under osmotic stress. Expression of AtDsPTP1 is enhanced by osmotic stress in seed coats, bases of rosette leaves, and roots. Compared with the wild type, the dsptp1 mutant shows increased proline accumulation, reduced malondialdehyde (MDA) content and ion leakage, and enhanced antioxidant enzyme activity in response to osmotic stress. AtDsPTP1 regulates the transcript levels of various dehydration-responsive genes under osmotic stress. Abscisic acid (ABA) accumulation in dsptp1 under osmotic stress is reduced with reduced expression of the ABA-biosynthesis gene NCED3 and increased expression of the ABA-catabolism gene CYP707A4. AtDsPTP1 also regulates the expression of key components in the ABA-signalling pathway. In conclusion, AtDsPTP1 regulates ABA accumulation, and acts as a negative regulator in osmotic stress signalling during Arabidospsis seed germination and seedling establishment.
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