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Title: Assembly of the Boechera retrofracta Genome and Evolutionary Analysis of Apomixis-Associated Genes

Abstract

Closely related to the model plant Arabidopsis thaliana, the genus Boechera is known to contain both sexual and apomictic species or accessions. Boechera retrofracta is a diploid sexually reproducing species and is thought to be an ancestral parent species of apomictic species. Here we report the de novo assembly of the B. retrofracta genome using short Illumina and Roche reads from 1 paired-end and 3 mate pair libraries. The distribution of 23-mers from the paired end library has indicated a low level of heterozygosity and the presence of detectable duplications and triplications. The genome size was estimated to be equal 227 Mb. N50 of the assembled scaffolds was 2.3 Mb. Using a hybrid approach that combines homology-based and de novo methods 27,048 protein-coding genes were predicted. Also repeats, transfer RNA (tRNA) and ribosomal RNA (rRNA) genes were annotated. Finally, genes of B. retrofracta and 6 other Brassicaceae species were used for phylogenetic tree reconstruction. In addition, we explored the histidine exonuclease APOLLO locus, related to apomixis in Boechera, and proposed model of its evolution through the series of duplications. An assembled genome of B. retrofracta will help in the challenging assembly of the highly heterozygous genomes of hybrid apomictic species.

Authors:
 [1];  [2];  [2];  [2];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [6];  [10]
  1. St. Petersburg State Univ., St. Petersburg (Russia); All-Russia Research Institute for Agricultural Microbiology, St.Petersburg (Russia)
  2. St. Petersburg State Univ., St. Petersburg (Russia)
  3. Colorado State Univ., Fort Collins, CO (United States)
  4. Univ. of California, Berkeley, CA (United States)
  5. Indian Inst. of Technology, Chennai (India)
  6. Univ. of Zurich, Zurich (Switzerland)
  7. USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States); HudsonAlpha Inst. of Biotechnology, Huntsville, AL (United States)
  8. USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States)
  9. Duke Univ., Durham, NC (United States)
  10. St. Petersburg State Univ., St. Petersburg (Russia); Komarov Botanical Institute RAS, St. Petersburg (Russia)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
OSTI Identifier:
1544039
Alternate Identifier(s):
OSTI ID: 1615270
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Genes
Additional Journal Information:
Journal Volume: 9; Journal Issue: 4; Journal ID: ISSN 2073-4425
Publisher:
MDPI
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; Genetics & Heredity; Boechera; Brassicaceae; genome; assembly; annotation; apomixis

Citation Formats

Kliver, Sergei, Rayko, Mike, Komissarov, Alexey, Bakin, Evgeny, Zhernakova, Daria, Prasad, Kasavajhala, Rushworth, Catherine, Baskar, R., Smetanin, Dmitry, Schmutz, Jeremy, Rokhsar, Daniel S., Mitchell-Olds, Thomas, Grossniklaus, Ueli, and Brukhin, Vladimir. Assembly of the Boechera retrofracta Genome and Evolutionary Analysis of Apomixis-Associated Genes. United States: N. p., 2018. Web. doi:10.3390/genes9040185.
Kliver, Sergei, Rayko, Mike, Komissarov, Alexey, Bakin, Evgeny, Zhernakova, Daria, Prasad, Kasavajhala, Rushworth, Catherine, Baskar, R., Smetanin, Dmitry, Schmutz, Jeremy, Rokhsar, Daniel S., Mitchell-Olds, Thomas, Grossniklaus, Ueli, & Brukhin, Vladimir. Assembly of the Boechera retrofracta Genome and Evolutionary Analysis of Apomixis-Associated Genes. United States. https://doi.org/10.3390/genes9040185
Kliver, Sergei, Rayko, Mike, Komissarov, Alexey, Bakin, Evgeny, Zhernakova, Daria, Prasad, Kasavajhala, Rushworth, Catherine, Baskar, R., Smetanin, Dmitry, Schmutz, Jeremy, Rokhsar, Daniel S., Mitchell-Olds, Thomas, Grossniklaus, Ueli, and Brukhin, Vladimir. Wed . "Assembly of the Boechera retrofracta Genome and Evolutionary Analysis of Apomixis-Associated Genes". United States. https://doi.org/10.3390/genes9040185. https://www.osti.gov/servlets/purl/1544039.
@article{osti_1544039,
title = {Assembly of the Boechera retrofracta Genome and Evolutionary Analysis of Apomixis-Associated Genes},
author = {Kliver, Sergei and Rayko, Mike and Komissarov, Alexey and Bakin, Evgeny and Zhernakova, Daria and Prasad, Kasavajhala and Rushworth, Catherine and Baskar, R. and Smetanin, Dmitry and Schmutz, Jeremy and Rokhsar, Daniel S. and Mitchell-Olds, Thomas and Grossniklaus, Ueli and Brukhin, Vladimir},
abstractNote = {Closely related to the model plant Arabidopsis thaliana, the genus Boechera is known to contain both sexual and apomictic species or accessions. Boechera retrofracta is a diploid sexually reproducing species and is thought to be an ancestral parent species of apomictic species. Here we report the de novo assembly of the B. retrofracta genome using short Illumina and Roche reads from 1 paired-end and 3 mate pair libraries. The distribution of 23-mers from the paired end library has indicated a low level of heterozygosity and the presence of detectable duplications and triplications. The genome size was estimated to be equal 227 Mb. N50 of the assembled scaffolds was 2.3 Mb. Using a hybrid approach that combines homology-based and de novo methods 27,048 protein-coding genes were predicted. Also repeats, transfer RNA (tRNA) and ribosomal RNA (rRNA) genes were annotated. Finally, genes of B. retrofracta and 6 other Brassicaceae species were used for phylogenetic tree reconstruction. In addition, we explored the histidine exonuclease APOLLO locus, related to apomixis in Boechera, and proposed model of its evolution through the series of duplications. An assembled genome of B. retrofracta will help in the challenging assembly of the highly heterozygous genomes of hybrid apomictic species.},
doi = {10.3390/genes9040185},
journal = {Genes},
number = 4,
volume = 9,
place = {United States},
year = {Wed Mar 28 00:00:00 EDT 2018},
month = {Wed Mar 28 00:00:00 EDT 2018}
}

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Cited by: 17 works
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Figures / Tables:

Figure 1 Figure 1: Plant (a) and flower (b) of Boechera retrofracta.

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Sexual reproduction, hybridization, apomixis, and polyploidization in the genus Boechera (Brassicaceae)
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Works referencing / citing this record:

The steps from sexual reproduction to apomixis
journal, April 2019


A brief note on genes that trigger components of apomixis
journal, April 2019


Ancient polymorphisms contribute to genome-wide variation by long-term balancing selection and divergent sorting in Boechera stricta
journal, June 2019


The Boechera Genus as a Resource for Apomixis Research
journal, April 2019

  • Brukhin, Vladimir; Osadtchiy, Jaroslaw V.; Florez-Rueda, Ana Marcela
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  • DOI: 10.3389/fpls.2019.00392

The Boechera Genus as a Resource for Apomixis Research
text, January 2019

  • Brukhin, Vladimir; Osadtchiy, Jaroslaw V.; Florez-Rueda, Ana Marcela
  • Frontiers Research Foundation
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Ancient polymorphisms contribute to genome-wide variation by long-term balancing selection and divergent sorting in Boechera stricta
journal, June 2019


The Functional Change and Deletion of FLC Homologs Contribute to the Evolution of Rapid Flowering in Boechera stricta
journal, July 2018


The Boechera Genus as a Resource for Apomixis Research
journal, April 2019

  • Brukhin, Vladimir; Osadtchiy, Jaroslaw V.; Florez-Rueda, Ana Marcela
  • Frontiers in Plant Science, Vol. 10
  • DOI: 10.3389/fpls.2019.00392