ArticlePlant biotechnology journal2021
Cytokinin oxidase/dehydrogenase OsCKX11 coordinates source and sink relationship in rice by simultaneous regulation of leaf senescence and grain number.
Article in Plant biotechnology journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers, 1 of them a synthesis that pooled it.
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Who cites it
74 citing papers in PubMed, 1 synthesis or guideline pooled it, 155 citations in OpenAlex.
- Chickpea Biofortification for Cytokinin DehydrogenaseFrontiers in genetics · 2022Pooled it
- Natural variation in OsMYB305 downregulating cytokinin-mediated inhibition of leaf senescence contributes to regional adaptation in rice.The New phytologist · 2026Article
- Cultivar-dependent regulation of cytokinin biosynthesis in wheat: developmental expression of TaIPT genes and hormonal crosstalk during reproductive development.BMC plant biology · 2026Article
- From signals to solutions: stress-induced leaf senescence and synthetic biology and AI approaches for crop resilience.Molecular horticulture · 2026Review
- Mitigating copper toxicity in Carthamus tinctorius L. through 6-benzylaminopurine during seed germination and vegetative growth.Scientific reports · 2026Article
- MaNAC46 Orchestrates Jasmonic Acid-Induced Senescence by Coordinating Chlorophyll Catabolism, ROS Homeostasis and Autophagy in Banana.Plant biotechnology journal · 2026Article
- Knockout of a cytokinin oxidase/dehydrogenase boosts soybean yield.Plant communications · 2026Article
- Molecular and Physiological Regulation of Premature Leaf Senescence in Rice.Plants (Basel, Switzerland) · 2026Review
- Article
- The Module WmABF1-1-WmMYB111 Manipulates the Leaf Senescence of Welwitschia by Integrative Regulation of Abscisic Acid Biosynthesis, Chlorophyll Degradation and Nitrogen Transportation.Plant biotechnology journal · 2025Article
- De novo transcriptome assembly and gene expression analysis of Cnidium officinale under high-temperature conditions.BMC genomics · 2025Article
- Time-Course Transcriptome, Metabolome, and Weighted Gene Co-Expression Network Analysis Reveal the Roles of thePlants (Basel, Switzerland) · 2025Article
- PcMYBs responded to 6-BA to regulate PcCKXs to promote germination of primary rhizome buds of Polygonatum cyrtonema Hua.BMC plant biology · 2025Article
- Article
- TAC-C uncovers open chromatin interaction in crops and SPL-mediated photosynthesis regulation.Science advances · 2025Article
- Carbohydrate flow during grain filling: Phytohormonal regulation and genetic control in rice (Oryza sativa).Journal of integrative plant biology · 2025Review
- Genetic engineering of RuBisCO by multiplex CRISPR editing small subunits in rice.Plant biotechnology journal · 2025Article
- Recent developments, challenges and opportunities in genome editing for crop science from a societal perspective.Frontiers in genome editing · 2025Review
- Effects of Drought Stress at the Booting Stage on Leaf Physiological Characteristics and Yield of Rice.Plants (Basel, Switzerland) · 2024Article
- Natural variation in the Tn1a promoter regulates tillering in rice.Plant biotechnology journal · 2024Article
14 more citing papers are in PubMed but not listed here.
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Authors and funding
12 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The flag leaf and grain belong to the source and sink, respectively, of cereals, and both have a bearing on final yield. Premature leaf senescence significantly reduces the photosynthetic rate and severely lowers crop yield. Cytokinins play important roles in leaf senescence and determine grain number. Here, we characterized the roles of the rice (Oryza sativa L.) cytokinin oxidase/dehydrogenase OsCKX11 in delaying leaf senescence, increasing grain number, and coordinately regulating source and sink. OsCKX11 was predominantly expressed in the roots, leaves, and panicles and was strongly induced by abscisic acid and leaf senescence. Recombinant OsCKX11 protein catalysed the degradation of various types of cytokinins but showed preference for trans-zeatin and cis-zeatin. Cytokinin levels were significantly increased in the flag leaves of osckx11 mutant compared to those of the wild type (WT). In the osckx11 mutant, the ABA-biosynthesizing genes were down-regulated and the ABA-degrading genes were up-regulated, thereby reducing the ABA levels relative to the WT. Thus, OsCKX11 functions antagonistically between cytokinins and ABA in leaf senescence. Moreover, osckx11 presented with significantly increased branch, tiller, and grain number compared with the WT. Collectively, our findings reveal that OsCKX11 simultaneously regulates photosynthesis and grain number, which may provide new insights into leaf senescence and crop molecular breeding.
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