ArticleJournal of experimental botany2010
The syncytium-specific expression of the Orysa;KRP3 CDK inhibitor: implication of its involvement in the cell cycle control in the rice (Oryza sativa L.) syncytial endosperm.
Article in Journal of experimental botany, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.
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Who cites it
28 citing papers in PubMed, 60 citations in OpenAlex.
- KRP3 Stability Controls Rice Plant Architecture and Productivity via MPK3-Mediated Phosphorylation.Plant biotechnology journal · 2026Article
- The role of cytokinin receptors in Arabidopsis thaliana seed development and how they affect the metabolomic profile.Planta · 2025Article
- Article
- Cytokinin oxidase2-deficient mutants improve panicle and grain architecture through cytokinin accumulation and enhance drought tolerance in indica rice.Plant cell reports · 2024Article
- The roles of a novel CDKB/KRP/FB3 cell cycle core complex in rice gametes and initiation of embryogenesis.Plant reproduction · 2023Article
- Cytokinin Translocation to, and Biosynthesis and Metabolism within, Cereal and Legume Seeds: Looking Back to Inform the Future.Metabolites · 2023Review
- Effect of Panicle Morphology on Grain Filling and Rice Yield: Genetic Control and Molecular Regulation.Frontiers in genetics · 2022Review
- Article
- Rice and Arabidopsis homologs of yeast CHROMOSOME TRANSMISSION FIDELITY PROTEIN 4 commonly interact with Polycomb complexes but exert divergent regulatory functions.The Plant cell · 2021Article
- Divergent phenotypic response of rice accessions to transient heat stress during early seed development.Plant direct · 2020Article
- Cyclin-Dependent Kinase Inhibitors KRP1 and KRP2 Are Involved in Grain Filling and Seed Germination in Rice (International journal of molecular sciences · 2019Article
- Genome-wide investigation of the ZF-HD gene family in Tartary buckwheat (Fagopyrum tataricum).BMC plant biology · 2019Article
- The Potential Role of Auxin and Abscisic Acid Balance andInternational journal of molecular sciences · 2018Article
- Biochemical and molecular characterisation of exogenous cytokinin application on grain filling in rice.BMC plant biology · 2018Article
- Identification and functional analysis of the ICK gene family in maize.Scientific reports · 2017Article
- Differential Gene Expression in the Meristem and during Early Fruit Growth of Pisum sativum L. Identifies Potential Targets for Breeding.International journal of molecular sciences · 2017Article
- Mechanisms of endosperm initiation.Plant reproduction · 2016Review
- Heat stress yields a unique MADS box transcription factor in determining seed size and thermal sensitivity.Plant physiology · 2016Article
- Allelic variants of the esterase gene W14/15 differentially regulate overwinter survival in perennial gentian (Gentiana L.).Molecular genetics and genomics : MGG · 2016Article
- Genome-Wide Mapping of Targets of Maize Histone Deacetylase HDA101 Reveals Its Function and Regulatory Mechanism during Seed Development.The Plant cell · 2016Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
During rice (Oryza sativa L.) seed development, the primary endosperm nucleus undergoes a series of divisions without cytokinesis, producing a multinucleate cell, known as a syncytium. After several rounds of rapid nuclear proliferation, the syncytium ceases to undergo mitosis; thereafter, the syncytium is partitioned into individual cells by a specific type of cytokinesis called cellularization. The transition between syncytium and cellularization is important in determining the final seed size and is a model for studying the cell cycle and cytokinesis. The involvement of cyclin-dependent kinase (CDK) inhibitors (CKIs) in cell cycle control was investigated here during the transition between syncytium and cellularization. It was found that one of the rice CKIs, Orysa;KRP3, is strongly expressed in the caryopsis at 2 d after flowering (DAF), and its expression is significantly reduced at 3 DAF. The other CKI transcripts did not show such a shift at 2 DAF. In situ hybridization analysis revealed that Orysa;KRP3 is expressed in multinucleate syncytial endosperm at 2 DAF, but not in cellularized endosperm at 3 DAF. Two-hybrid assays showed that Orysa;KRP3 binds Orysa;CDKA;1, Orysa;CDKA;2, Orysa;CycA1;1, and Orysa;CycD2;2. By contrast, Orysa;CDKB2;1 and Orysa;CycB2;2 do not show binding to Orysa;KRP3. Orysa;KRP3 was able to rescue yeast premature cell division due to the dominant positive expression of mutant rice CDKA;1 indicating that Orysa;KRP3 inhibited rice CDK. These data suggest that Orysa;KRP3 is involved in cell cycle control of syncytial endosperm.
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