ArticleFrontiers in plant science2017
Heat-Induced Cytokinin Transportation and Degradation Are Associated with Reduced Panicle Cytokinin Expression and Fewer Spikelets per Panicle in Rice.
Article in Frontiers in plant science, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.
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Who cites it
39 citing papers in PubMed, 113 citations in OpenAlex.
- Biotechnological modification of the cytokinin regulatory system to improve drought and heat tolerance in the major crops.Plant cell reports · 2026Review
- Review
- Rice Heat Stress Response: Physiological Changes and Molecular Regulatory Network Research Progress.Plants (Basel, Switzerland) · 2025Review
- Phytohormonal homeostasis, chloroplast stability, and heat shock transcription pathways related to the adaptability of creeping bentgrass species to heat stress.Protoplasma · 2025Article
- Decrypting molecular mechanism of heat stress tolerance in rice to tackle climate change challenges through recent approaches.Frontiers in plant science · 2025Review
- Effects of low-temperature stress during rice heading stage on carbon and nitrogen allocation in paddy eco-system of northeastern China.Frontiers in plant science · 2025Article
- Alternate wetting and drying irrigation at tillering stage enhances the heat tolerance of rice by increasing sucrose and cytokinin content in panicles.Frontiers in plant science · 2025Article
- How Rice Responds to Temperature Changes and Defeats Heat Stress.Rice (New York, N.Y.) · 2024Review
- Two Carya Species,Plants (Basel, Switzerland) · 2024Article
- Purine permease (PUP) family gene PUP11 positively regulates the rice seed setting rate by influencing seed development.Plant cell reports · 2024Article
- Plants and global warming: challenges and strategies for a warming world.Plant cell reports · 2024Review
- Genomic insights into CKX genes: key players in cotton fibre development and abiotic stress responses.PeerJ · 2024Article
- Environmental control of rice flowering time.Plant communications · 2023Review
- Efficient strategies for controlled release of nanoencapsulated phytohormones to improve plant stress tolerance.Plant methods · 2023Review
- Genetic Research Progress: Heat Tolerance in Rice.International journal of molecular sciences · 2023Review
- Exogenous Kinetin Modulates ROS Homeostasis to Affect Heat Tolerance in Rice Seedlings.International journal of molecular sciences · 2023Article
- Enhancement of Heat and Drought Stress Tolerance in Rice by Genetic Manipulation: A Systematic Review.Rice (New York, N.Y.) · 2022Review
- Review
- Heat Stress Decreases Rice Grain Weight: Evidence and Physiological Mechanisms of Heat Effects Prior to Flowering.International journal of molecular sciences · 2022Review
- Identification of QTLs for wheat heading time across multiple-environments.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2022Article
Corrections and comments
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Authors and funding
10 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cytokinins (CTKs) regulate panicle size and mediate heat tolerance in crops. To investigate the effect of high temperature on panicle CTK expression and the role of such expression in panicle differentiation in rice, four rice varieties (Nagina22, N22; Huanghuazhan, HHZ; Liangyoupeijiu, LYPJ; and Shanyou63, SY63) were grown under normal conditions and subjected to three high temperature treatments and one control treatment in temperature-controlled greenhouses for 15 days during the early reproductive stage. The high temperature treatments significantly reduced panicle CTK abundance in heat-susceptible LYPJ, HHZ, and N22 varieties, which showed fewer spikelets per panicle in comparison with control plants. Exogenous 6-benzylaminopurine application mitigated the effect of heat injury on the number of spikelets per panicle. The high temperature treatments significantly decreased the xylem sap flow rate and CTK transportation rate, but enhanced cytokinin oxidase/dehydrogenase (CKX) activity in heat-susceptible varieties. In comparison with the heat-susceptible varieties, heat-tolerant variety SY63 showed less reduction in panicle CTK abundance, an enhanced xylem sap flow rate, an improved CTK transport rate, and stable CKX activity under the high temperature treatments. Enzymes involved in CTK synthesis (isopentenyltransferase, LONELY GUY, and cytochrome P450 monooxygenase) were inhibited by the high temperature treatments. Heat-induced changes in CTK transportation from root to shoot through xylem sap flow and panicle CTK degradation via CKX were closely associated with the effects of heat on panicle CTK abundance and panicle size. Heat-tolerant variety SY63 showed stable panicle size under the high temperature treatments because of enhanced transport of root-derived CTKs and stable panicle CKX activity. Our results provide insight into rice heat tolerance that will facilitate the development of rice varieties with tolerance to high temperature.
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