Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin, Bulletin of Plant Breeding and Acclimatization Institute, Open Access Journal
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  4. Review paper

Contribution of cytokinin biosynthesis genes in determining wheat grain yield

Joanna Bocian

j.bocian@ihar.edu.pl
(Poland)
https://orcid.org/0000-0003-4553-7269

Anna Nadolska-Orczyk


Plant Breeding and Acclimatization Institute—National Research Institute (Poland)
https://orcid.org/0000-0001-6127-3860


Abstract

Cytokinins are a class of phytohormones associated with key plant growth and developmental processes, including those with a significant influence on plant yield and yield components. Cytokinin biosynthesis is catalysed by isopentenyltransferase, an enzyme encoded by the IPT gene family members. There are two types of IPT genes: ATP/ADP-IPT and tRNA-IPT. Depending on the IPT gene, the encoded enzyme initiates a separate cytokinin biosynthesis pathway, ultimately determining the type of cytokinins produced and, consequently, their function. Both, trans- and cis-zeatin are of particular importance in the first stages of cereal grain development, which are crucial in determining grain yield. These two cytokinins are produced as a result of separate biosynthesis pathways, and their participation in grain development depends on the species / genotypes. This review presents the importance of cytokinins and the IPT gene family members in determining the yield potential of plants. We summarize the current status of knowledge on the wheat IPT genes and their spatio-temporal expression pattern. Taking into account these information and the known biological activity of cytokinins in individual organs at various stages of the development of wheat plants and other cereal species, we point to IPT genes with a potentially significant role in determining wheat yield.


Keywords:

cytokinin; cytokinin biosynthesis; grain yield; IPT gene family; wheat

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Published
2023-12-29

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Bocian, J. and Nadolska-Orczyk, A. (2023) “Contribution of cytokinin biosynthesis genes in determining wheat grain yield”, Bulletin of Plant Breeding and Acclimatization Institute, (300), pp. 57–65. doi: 10.37317/biul-2023-0012.

Authors

Joanna Bocian 
j.bocian@ihar.edu.pl
Poland
https://orcid.org/0000-0003-4553-7269

Authors

Anna Nadolska-Orczyk 

Plant Breeding and Acclimatization Institute—National Research Institute Poland
https://orcid.org/0000-0001-6127-3860

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