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Evolutionary Importance of Generative Polyploidy for Genome Evolution of Haploid-Dominant Land Plants

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Plant Genome Diversity Volume 2

Abstract

In this chapter, we focus on aspects and effects of polyploidization in haploid-dominant plants, like bryophytes, which have a dominant haploid gametophyte and a reduced diploid sporophytic generation. What role does polyploidization play in the evolution of these organisms? Can we find evidence of ancient and recent polyploidization events in the genomes of extant bryophytes? What is the importance of auto- versus allopolyploidy? What is the extent of the paranome, i.e. the genomic fraction of paralogs, within a bryophyte genome? What is the prevalent model for functionalization of paralogs and which kind of functional classes of genes have been retained preferentially? We come to the conclusion that the established moss model P. patens and its siblings appears as a model ideally suited to study genome evolution through polyploidization and hybridization in haploid-dominant organisms. Moreover, due to the extensive range of morphological differences of the sporophyte, ranging from the elaborate F. hygrometrica to the vastly reduced P. patens morphology, Funariaceae are an excellent model to study gene-phene evolution. The fact that there is a low breeding barrier among the family also enables crossing and associated genetic studies.

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Acknowledgments

We are grateful to Stanislav Karnatsevych for conducting literature and experimental research with regard to crossing and hybridization within the Funariaceae.

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Authors and Affiliations

  1. University of Freiburg, Schänzle str. 1, Freiburg, 79104, Germany

    Dr. Stefan A. Rensing (Faculty of Biology)

  2. Plant Biotechnology, University of Freiburg, Freiburg, Germany

    Dr. Anna K. Beike (Faculty of Biology) & Dr. Daniel Lang (Faculty of Biology)

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  1. Dr. Stefan A. Rensing
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  2. Dr. Anna K. Beike
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Correspondence to Stefan A. Rensing .

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Editors and Affiliations

  1. Inst. Botanik und Botanischer Garten, Universität Wien, Rennweg 14, Wien, 1030, Austria

    Johann Greilhuber

  2. Inst. Experimental Botany, Dept. Plant Biotechnology, ASCR Olomouc, Sokolovska 6, Olomouc, 772 00, Czech Republic

    Jaroslav Dolezel

  3. Dept. Botany, Iowa State University, Ames, 50011-1024, Iowa, USA

    Jonathan F. Wendel

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Rensing, S.A., Beike, A.K., Lang, D. (2013). Evolutionary Importance of Generative Polyploidy for Genome Evolution of Haploid-Dominant Land Plants. In: Greilhuber, J., Dolezel, J., Wendel, J. (eds) Plant Genome Diversity Volume 2. Springer, Vienna. https://doi.org/10.1007/978-3-7091-1160-4_18

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