Polyploidy in Plants

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Molecular Biology".

Deadline for manuscript submissions: closed (30 June 2020) | Viewed by 3703

Special Issue Editors


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Guest Editor
Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, 9201 University City Blvd, Charlotte, NC 28223, USA
Interests: polyploidy; genome evolution; miRNA; Avena; oats; bioinoformatics; genome structure; evolutionary genomics

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Guest Editor
Department of Ecology, Evolution, and Organismal Biology, Iowa State University, Ames, IA 50011, USA
Interests: polyploidy; cotton; Gossypium; genome evolution; biological networks; transcriptomics; evolutionary genomics

Special Issue Information

Dear Colleagues,

Polyploidy is a remarkable phenomenon common to the evolutionary history of all plants that can have profound effects on that lineage. The genomic turmoil concomitant with genome doubling and the redundancy inherent in polyploid species provide fodder for evolutionary novelty, often resulting in increased species diversification and/or phenotypic novelty. Decades of research have been devoted to understanding the consequences of polyploidy, from ecology to genetics and phenotype. From this body of research, we have increased our understanding of the prevalence of polyploidy, both ancient and recent; the myriad structural genomic and transcriptomic changes that accompany polyploidization; the recurrent and ongoing nature of polyploidy; the return to diploidization via fractionation; the parental biases exhibited in the polyploid; and the physiological and ecological consequences of polyploidy.

Although the research community has made significant strides in understanding the patterns, processes, and consequences of polyploidy, questions remain regarding the “rules” of polyploidy. Much of our understanding comes from relatively few model systems whose perspective on the generation and evolution of polyploid species may be limited to one or few of the many consequences of genome doubling. Modern polyploid research should, therefore, make a concerted effort toward both understanding all aspects and/or consequences of polyploidy for established model systems and also toward developing new models whose unique biology and evolutionary history may help elucidate the precepts governing this evolutionarily important phenomenon. For this Special Issue, we welcome articles that contribute to the global understanding of polyploidy, the patterns and processes that govern it, and the myriad outcomes of genome doubling.

Prof. Jessica Schlueter
Dr. Corrinne E Grover
Guest Editors

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Keywords

  • polyploidy
  • paleopolyploidy
  • polyploid genomics
  • polyploid evolution
  • polyploid ecology
  • polyploid transcriptomes
  • polyploid epigenomics
  • fractionation
  • diploidization

Published Papers (1 paper)

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Research

18 pages, 1282 KiB  
Article
Copy Number Variation of Transposable Elements in Thinopyrum intermedium and Its Diploid Relative Species
by Mikhail G. Divashuk, Gennady I. Karlov and Pavel Yu. Kroupin
Plants 2020, 9(1), 15; https://doi.org/10.3390/plants9010015 - 21 Dec 2019
Cited by 10 | Viewed by 3277
Abstract
Diploid and polyploid wild species of Triticeae have complex relationships, and the understanding of their evolution and speciation could help to increase the usability of them in wheat breeding as a source of genetic diversity. The diploid species Pseudoroegneria spicata (St), Thinopyrum bessarabicum [...] Read more.
Diploid and polyploid wild species of Triticeae have complex relationships, and the understanding of their evolution and speciation could help to increase the usability of them in wheat breeding as a source of genetic diversity. The diploid species Pseudoroegneria spicata (St), Thinopyrum bessarabicum (Jb), Dasypyrum villosum (V) derived from a hypothetical common ancestor are considered to be possible subgenome donors in hexaploid species Th. intermedium (JrJvsSt, where indices r, v, and s stand for the partial relation to the genomes of Secale, Dasypyrum, and Pseudoroegneria, respectively). We quantified 10 families of transposable elements (TEs) in P. spicata, Th. bessarabicum, D. villosum (per one genome), and Th. intermedium (per one average subgenome) using the quantitative real time PCR assay and compared their abundance within the studied genomes as well as between them. Sabrina was the most abundant among all studied elements in P. spicata, D. villosum, and Th. intermedium, and among Ty3/Gypsy elements in all studied species. Among Ty1/Copia elements, Angela-A and WIS-A showed the highest and close abundance with the exception of D. villosum, and comprised the majority of all studied elements in Th. bessarabicum. Sabrina, BAGY2, and Angela-A showed similar abundance among diploids and in Th. intermedium hexaploid; Latidu and Barbara demonstrated sharp differences between diploid genomes. The relationships between genomes of Triticeae species based on the studied TE abundance and the role of TEs in speciation and polyploidization in the light of the current phylogenetic models is discussed. Full article
(This article belongs to the Special Issue Polyploidy in Plants)
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