Skip to content
Research Article Open access CC BY 4.0

Role of Cytokinin Oxidase/ Dehydrogenase in Crop Improvement

Ankit Yadav, Pratibha, Mayur Kumar Sonagara, Unnati Vaghela, Yadav , Ankit

International Journal of Environment and Climate Change · pp. 1761–1772 · Published 16 Jun 2023

10.9734/ijecc/2023/v13i82130

Abstract

The phytohormone cytokinin regulates various crucial functions of plant growth and development such as shoot apical meristem activity, flower development, vascular development etc. and also has negative role in lateral root development and root apical meristem activity. Cytokinin is degraded by cytokinin oxidase/dehydrogenase (CKX) irreversibly and reversible inactivation by glucosylation. Various homologous genes of CKX have been identified in Arabidopsis and in many other crop plants. The root specific expression of CKX showed positive results for larger root with higher lateral root numbers and higher root to shoot biomass. The site-specific manipulation of CKX gene has been done in crops like wheat, barley, maize, rice, legumes and horticultural crops to regulate the cytokinin levels in the particular tissues to enhance the yield, tolerance to various abiotic stresses (drought, salt, lower soil fertility), biofortification for many micronutrients (Zn, Fe) in the seed, propagation, etc. And the use of modern techniques in manipulation of CKX have been started to improve the crop plant and the outcome is very promising for the future application in commercial agricultural activities.

Cytokinin cytokinin oxidase/dehydrogenase drought lateral root yield

References (46)

  1. 1 Food Security: The Challenge of Feeding 9 Billion People [DOI]
  2. 2 Cytokinin-Deficient Transgenic Arabidopsis Plants Show Multiple Developmental Alterations Indicating Opposite Functions of Cytokinins in the Regulation of Shoot and Root Meristem Activity [DOI]
  3. 3 Regulation of plant growth by cytokinin [DOI]
  4. 4 Analysis of Cytokinin Mutants and Regulation of Cytokinin Metabolic Genes Reveals Important Regulatory Roles of Cytokinins in Drought, Salt and Abscisic Acid Responses, and Abscisic Acid Biosynthesis [DOI]
  5. 5 Cytokinin action in plant development [DOI]
  6. 6 Cytokinin signaling in plant development [DOI]
  7. 7 Cytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root Initiation [DOI]
  8. 8 Reassessment of the Four Yield-related Genes Gn1a, DEP1, GS3, and IPA1 in Rice Using a CRISPR/Cas9 System [DOI]
  9. 9 Structure and function of cytokinin oxidase/dehydrogenase genes of maize, rice, Arabidopsis and other species [DOI]
  10. 10 Cytokinins are central regulators of cambial activity [DOI]
  11. 11 Cytokinins play opposite roles in lateral root formation, and nematode and Rhizobial symbioses [DOI]
  12. 12 Cytokinin signaling regulates cambial development in poplar [DOI]
  13. 13 Cytokinin – A Developing Story [DOI]
  14. 14 Cytokinin-Mediated Cell Cycling Arrest of Pericycle Founder Cells in Lateral Root Initiation of Arabidopsis [DOI]
  15. 15 Gene editing and mutagenesis reveal inter-cultivar differences and additivity in the contribution of TaGW2 homoeologues to grain size and weight in wheat [DOI]
  16. 16 Down-Regulation of Cytokinin Oxidase 2 Expression Increases Tiller Number and Improves Rice Yield [DOI]
  17. 17 Cytokinin deficiency causes distinct changes of sink and source parameters in tobacco shoots and roots [DOI]
  18. 18 Identification and Expression Analysis of Cytokinin Metabolic Genes in Soybean under Normal and Drought Conditions in Relation to Cytokinin Levels [DOI]
  19. 19 Cytokinin dehydrogenase: a genetic target for yield improvement in wheat [DOI]
  20. 20 The Transcriptional Repressor ARR1-SRDX Suppresses Pleiotropic Cytokinin Activities in Arabidopsis [DOI]
  21. 21 Food production & availability - Essential prerequisites for sustainable food security [DOI]
  22. 22 Modification of Barley Plant Productivity Through Regulation of Cytokinin Content by Reverse-Genetics Approaches [DOI]
  23. 23 Knockout of the HvCKX1 or HvCKX3 Gene in Barley (Hordeum vulgare L.) by RNA-Guided Cas9 Nuclease Affects the Regulation of Cytokinin Metabolism and Root Morphology [DOI]
  24. 24 Molecular and Biochemical Characterization of a Cytokinin Oxidase from Maize [DOI]
  25. 25 Cytokinin Oxidase Gene Expression in Maize Is Localized to the Vasculature, and Is Induced by Cytokinins, Abscisic Acid, and Abiotic Stress [DOI]
  26. 26 Registration of a Drought‐Resistant Chickpea Germplasm [DOI]
  27. 27 A Genome-wide View of Transcriptome Dynamics During Early Spike Development in Bread Wheat [DOI]
  28. 28 Type-B response regulators of rice play key roles in growth, development, and cytokinin signaling [DOI]
  29. 29 Maize cytokinin oxidase genes: differential expression and cloning of two new cDNAs [DOI]
  30. 30 Copy Number Variation of Cytokinin Oxidase Gene Tackx4 Associated with Grain Weight and Chlorophyll Content of Flag Leaf in Common Wheat [DOI]
  31. 31 Expression Patterns of HvCKX Genes Indicate Their Role in Growth and Reproductive Development of Barley [DOI]
  32. 32 Genome-Wide Identification and Expression Profiling of Cytokinin Oxidase/Dehydrogenase (CKX) Genes Reveal Likely Roles in Pod Development and Stress Responses in Oilseed Rape (Brassica napus L.) [DOI]
  33. 33 Improving Zinc and Iron Accumulation in Maize Grains Using the Zinc and Iron Transporter ZmZIP5 [DOI]
  34. 34 Identification of a Novel Allele of TaCKX6a02 Associated with Grain Size, Filling Rate and Weight of Common Wheat [DOI]
  35. 35 Supraoptimal Cytokinin Content Inhibits Rice Seminal Root Growth by Reducing Root Meristem Size and Cell Length via Increased Ethylene Content [DOI]
  36. 36 Genome-wide analysis and identification of cytokinin oxidase/dehydrogenase (CKX) gene family in foxtail millet (Setaria italica) [DOI]
  37. 37 Specificity of expression of TaCKX family genes in developing plants of wheat and their co-operation within and among organs [DOI]
  38. 38 Elevated auxin and reduced cytokinin contents in rootstocks improve their performance and grafting success [DOI]
  39. 39 Cytokinin dehydrogenase differentially regulates cytokinin and indirectly affects hydrogen peroxide accumulation in tomato leaf [DOI]
  40. 40 Isolation of a Gene Encoding a Glycosylated Cytokinin Oxidase from Maize [DOI]
  41. 41 The Involvement of Cytokinin Oxidase/Dehydrogenase and Zeatin Reductase in Regulation of Cytokinin Levels in Pea (Pisum sativum L.) Leaves [DOI]
  42. 42 Type-A Arabidopsis Response Regulators Are Partially Redundant Negative Regulators of Cytokinin Signaling [DOI]
  43. 43 Zn-fortified cereal grains in field-grown barley by enhanced root cytokinin breakdown [DOI]
  44. 44 Evolution and expression patterns of cytokinin oxidase genes in Fragaria vesca [DOI]
  45. 45 The Proceedings of the National Academy of Sciences [DOI]
  46. 46 International Journal of Molecular Sciences [DOI]

Cited by 0

No indexed citations yet.

Article metrics

Real usage data collected on this platform.

14

Page views

0

PDF downloads

0

Outbound clicks

0

Citations

Views over time

Views by country

Approximate, from request IP at view time — not citizenship or institution. Countries with fewer than 5 views are grouped as "Other".

Traffic sources

Referring site, by host.

Views and downloads exclude known bots/crawlers. Citations combines this platform's own DOI-resolved index with each external source's own reported total — see Cited by above for individually listed citing works. Last refreshed 0 seconds ago.