ArticleRice (New York, N.Y.)2024
MKK3 Cascade Regulates Seed Dormancy Through a Negative Feedback Loop Modulating ABA Signal in Rice.
Article in Rice (New York, N.Y.), 2024. 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, 12 citations in OpenAlex.
- The TaDof-2D-miR1832-TaP450-7A module regulates low-temperature-induced seed dormancy release in wheat.Plant communications · 2026Article
- Transcriptomic Profiling Reveals the Seed Aging Process inPlants (Basel, Switzerland) · 2026Article
- TaCNGC-2A suppresses seed dormancy and activates pre-harvest sprouting through modulating calcium and hormonal signaling pathways.Nature communications · 2026Article
- Dormancy Versus Germination: 3D Protein Modeling and Evolutionary Analyses Define the Roles of Genetic Variants in the Barley MKK3 Enzyme.International journal of molecular sciences · 2026Article
- Translating research on seed dormancy and germination from Arabidopsis to temperate cereals to control pre-harvest sprouting.Frontiers in plant science · 2026Review
- Investigation of the physiological and molecular regulatory mechanism of soluble sugar metabolism inFrontiers in plant science · 2025Article
- PlZAT10 binds to the ABA catabolism gene PlCYP707A2 promoter to mediate seed dormancy release in Paeonia lactiflora.Plant cell reports · 2024Article
- Genome-Wide Identification of MKK Gene Family and Response to Hormone and Abiotic Stress in Rice.Plants (Basel, Switzerland) · 2024Article
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Authors and funding
12 authors at 3 institutions in 1 country.
Funding
Abstract
backgroundWith the increasing frequency of climatic anomalies, high temperatures and long-term rain often occur during the rice-harvesting period, especially for early rice crops in tropical and subtropical regions. Seed dormancy directly affects the resistance to pre-harvest sprouting (PHS). Therefore, in order to increase rice production, it is critical to enhance seed dormancy and avoid yield losses to PHS. The elucidation and utilization of the seed dormancy regulation mechanism is of great significance to rice production. Preliminary results indicated that the OsMKKK62-OsMKK3-OsMPK7/14 module might regulate ABA sensitivity and then control seed dormancy. The detailed mechanism is still unclear.
resultsThe overexpression of OsMKK3 resulted in serious PHS. The expression levels of OsMKK3 and OsMPK7 were upregulated by ABA and GA at germination stage. OsMKK3 and OsMPK7 are both located in the nucleus and cytoplasm. The dormancy level of double knockout mutant mkk3/mft2 was lower than that of mkk3, indicating that OsMFT2 functions in the downstream of MKK3 cascade in regulating rice seeds germination. Biochemical results showed that OsMPK7 interacted with multiple core ABA signaling components according to yeast two-hybrid screening and luciferase complementation experiments, suggesting that MKK3 cascade regulates ABA signaling by modulating the core ABA signaling components. Moreover, the ABA response and ABA responsive genes of mpk7/14 were significantly higher than those of wild-type ZH11 when subjected to ABA treatment.
conclusionMKK3 cascade mediates the negative feedback loop of ABA signal through the interaction between OsMPK7 and core ABA signaling components in rice.
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