Class II transposable elements in Medicago truncatula

Dariusz Grzebelus

Abstract

Transposable elements (TEs) are capable of changing their genomic localization. Most class II elements (DNA transposons) transpose via physical excision and reintegration elsewhere in the genome (a cut and paste mechanism). They are widespread in plants, nevertheless, they usually do not attain high copy numbers as opposed to certain class I families. In Medicago truncatula, they are even less numerous as a group than in most other plant genomes and they were not systematically investigated. There are several reports on families of DNA transposons, including those belonging to PIF/Harbinger, Tc1/mariner, and Mutator superfamilies. Features characteristic for these families are presented in the present chapter. All of them can be related to groups of miniature inverted repeat transposable elements (MITEs) – non‐autonomous derivatives of the canonical elements, slightly more numerous and depending on the transposition machinery provided by their autonomous counterparts. Based on high levels of insertional polymorphisms in M. truncatula and high levels of uniformity of some MITE families, they likely have been active in the recent evolutionary period and might still be active. More research is needed to fully reveal the diversity of DNA transposons in M. truncatula.
Author Dariusz Grzebelus (FoBaH / Department of Plant Biology and Biotechnology)
Dariusz Grzebelus,,
- Department of Plant Biology and Biotechnology
Pages888-892
Publication size in sheets0.5
Book de Bruijn Frans J. (eds.): The Model Legume Medicago truncatula, 2 Volume Set, 2020, John Wiley & Sons, ISBN 9781119409168, [9781119409175, 9781119409151], 1264 p.
DOIDOI:10.1002/9781119409144.ch112
URL https://onlinelibrary.wiley.com/doi/abs/10.1002/9781119409144.ch112
Languageen angielski
Score (nominal)20
Score sourcepublisherList
Citation count*
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FinansowanieThis work was supported by the Polish Ministry of Science and Higher Education.
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