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@article{2333940,
author = {Farhat, Perla and Malík Mandáková, Terezie and Divíšek, Jan and Kudoh, Hiroshi and German, Dmitry A. and Lysák, Martin},
article_location = {Lausanne (Switzerland)},
article_number = {May},
doi = {http://dx.doi.org/10.3389/fpls.2023.1165140},
keywords = {chromosome painting; Hyb-Seq; Arabidopsis-related model systems; Brassicaceae; Cruciferae; polyploidy; diploidization; whole-genome duplication (WGD)},
language = {eng},
issn = {1664-462X},
journal = {Frontiers in Plant Science},
title = {The evolution of the hypotetraploid Catolobus pendulus genome – the poorly known sister species of Capsella},
url = {https://doi.org/10.3389/fpls.2023.1165140},
volume = {14},
year = {2023}
}
TY - JOUR
ID - 2333940
AU - Farhat, Perla - Malík Mandáková, Terezie - Divíšek, Jan - Kudoh, Hiroshi - German, Dmitry A. - Lysák, Martin
PY - 2023
TI - The evolution of the hypotetraploid Catolobus pendulus genome – the poorly known sister species of Capsella
JF - Frontiers in Plant Science
VL - 14
IS - May
SP - 1-17
EP - 1-17
PB - Frontiers Media SA
SN - 1664462X
KW - chromosome painting
KW - Hyb-Seq
KW - Arabidopsis-related model systems
KW - Brassicaceae
KW - Cruciferae
KW - polyploidy
KW - diploidization
KW - whole-genome duplication (WGD)
UR - https://doi.org/10.3389/fpls.2023.1165140
N2 - The establishment of Arabidopsis as the most important plant model has also brought other crucifer species into the spotlight of comparative research. While the genus Capsella has become a prominent crucifer model system, its closest relative has been overlooked. The unispecific genus Catolobus is native to temperate Eurasian woodlands, from eastern Europe to the Russian Far East. Here, we analyzed chromosome number, genome structure, intraspecific genetic variation, and habitat suitability of Catolobus pendulus throughout its range. Unexpectedly, all analyzed populations were hypotetraploid (2n = 30, similar to 330 Mb). Comparative cytogenomic analysis revealed that the Catolobus genome arose by a whole-genome duplication in a diploid genome resembling Ancestral Crucifer Karyotype (ACK, n = 8). In contrast to the much younger Capsella allotetraploid genomes, the presumably autotetraploid Catolobus genome (2n = 32) arose early after the Catolobus/Capsella divergence. Since its origin, the tetraploid Catolobus genome has undergone chromosomal rediploidization, including a reduction in chromosome number from 2n = 32 to 2n = 30. Diploidization occurred through end-to-end chromosome fusion and other chromosomal rearrangements affecting a total of six of 16 ancestral chromosomes. The hypotetraploid Catolobus cytotype expanded toward its present range, accompanied by some longitudinal genetic differentiation. The sister relationship between Catolobus and Capsella allows comparative studies of tetraploid genomes of contrasting ages and different degrees of genome diploidization.
ER -
FARHAT, Perla, Terezie MALÍK MANDÁKOVÁ, Jan DIVÍŠEK, Hiroshi KUDOH, Dmitry A. GERMAN and Martin LYSÁK. The evolution of the hypotetraploid Catolobus pendulus genome – the poorly known sister species of Capsella. \textit{Frontiers in Plant Science}. Lausanne (Switzerland): Frontiers Media SA, 2023, vol.~14, May, p.~1-17. ISSN~1664-462X. Available from: https://dx.doi.org/10.3389/fpls.2023.1165140.
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