ArticleScientific reports2025
The abscisic acid signaling negative regulator OsPP2C68 confers drought and salinity tolerance to rice.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- The role of coumarin biosynthesis in modulating plant drought responses: insights from PpBMT overexpression in Arabidopsis.BMC plant biology · 2026Article
- Evolutionary shifts in plant adaptation mediated by phytohormones.Plant communications · 2026Review
- Melatonin enhances the cold tolerance of tomatoes by promoting ABA accumulation.Plant cell reports · 2026Article
- Molecular mechanisms of peanut root responses to Cd stress regulated by ABC transporter and plant hormone signal transduction pathways.BMC plant biology · 2026Article
- Emerging Mechanisms of Plant Responses to Abiotic Stress.Plants (Basel, Switzerland) · 2025Review
- Multi-locus genome-wide association studies for root system architectural traits in Ethiopian sorghum (Sorghum bicolor L.) landraces.BMC plant biology · 2025Article
- Molecular Mechanisms Underlying Salt Tolerance in Maize: A Combined Transcriptome and Metabolome Analysis.Plants (Basel, Switzerland) · 2025Article
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11 authors.
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Abstract
Clade A type 2 C protein phosphatases (PP2CAs) are core regulatory factors in the plant abscisic acid (ABA) signaling pathway. They play crucial roles in response to abiotic stress. However, a comprehensive understanding of the functions of individual members of rice PP2CA gene families remains limited. This study investigates the role of OsPP2C68 in response to abiotic stress. Our findings indicated that the OsPP2C68 is highly expressed in the embryo and endosperm, and is subcellular localized in the nucleus. OsPP2C68 knockout mutants reduced seed germination and root and stem lengths under ABA treatment. The mutants also exhibited higher stomatal closure rates, indicating increased sensitivity to ABA. In addition, the OsPP2C68 knockout mutants exhibited altered synthesis of osmolytes and antioxidant enzymes under drought and high salinity stress, along with the differential expression of genes associated with drought and salt stress responses, enhancing rice tolerance to drought and salt. These results collectively identify OsPP2C68 as a negative regulator in the rice ABA signaling pathway. It is responsive to drought and salt stress, and involved in regulating stomatal movement.
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