ArticlePlant cell reports2024
Rice A20/AN1 protein, OsSAP10, confers water-deficit stress tolerance via proteasome pathway and positive regulation of ABA signaling in Arabidopsis.
Article in Plant cell reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Targeted anthocyanin biofortification in black rice: a review of spatial metabolic control, growth-defence trade-offs and genotype-environment-management design.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Review
- OsSAP3 Enhances Rice Seed Vigor by Modulating Hydrogen Peroxide Homeostasis.Rice (New York, N.Y.) · 2026Article
- The VvSAP8-VvHAK5 module from grape confers dual tolerance to potassium deficiency and salt stress by regulating potassium transport.Plant cell reports · 2026Article
- Comparative genomic and evolutionary analysis of stress-associated proteins inFrontiers in genetics · 2026Article
- Genome-wide identification, comparative analysis, and expression profiling of stress-associated protein (SAP) gene family in3 Biotech · 2025Article
- Co-expression ofFrontiers in plant science · 2025Article
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Authors and funding
5 authors.
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Abstract
key messageOverexpression of rice A20/AN1 zinc-finger protein, OsSAP10, improves water-deficit stress tolerance in Arabidopsis via interaction with multiple proteins. Stress-associated proteins (SAPs) constitute a class of A20/AN1 zinc-finger domain containing proteins and their genes are induced in response to multiple abiotic stresses. The role of certain SAP genes in conferring abiotic stress tolerance is well established, but their mechanism of action is poorly understood. To improve our understanding of SAP gene functions, OsSAP10, a stress-inducible rice gene, was chosen for the functional and molecular characterization. To elucidate its role in water-deficit stress (WDS) response, we aimed to functionally characterize its roles in transgenic Arabidopsis, overexpressing OsSAP10. OsSAP10 transgenics showed improved tolerance to water-deficit stress at seed germination, seedling and mature plant stages. At physiological and biochemical levels, OsSAP10 transgenics exhibited a higher survival rate, increased relative water content, high osmolyte accumulation (proline and soluble sugar), reduced water loss, low ROS production, low MDA content and protected yield loss under WDS relative to wild type (WT). Moreover, transgenics were hypersensitive to ABA treatment with enhanced ABA signaling and stress-responsive genes expression. The protein-protein interaction studies revealed that OsSAP10 interacts with proteins involved in proteasomal pathway, such as OsRAD23, polyubiquitin and with negative and positive regulators of stress signaling, i.e., OsMBP1.2, OsDRIP2, OsSCP and OsAMTR1. The A20 domain was found to be crucial for most interactions but insufficient for all interactions tested. Overall, our investigations suggest that OsSAP10 is an important candidate for improving water-deficit stress tolerance in plants, and positively regulates ABA and WDS signaling via protein-protein interactions and modulation of endogenous genes expression in ABA-dependent manner.
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