The Genome Sequence of Gossypioides kirkii Illustrates a Descending Dysploidy in Plants
One of the extraordinary aspects of plant genome evolution is variation in chromosome number, particularly that among closely related species. This is exemplified by the cotton genus (Gossypium) and its relatives, where most species and genera have a base chromosome number of 13. The two exceptions...
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doaj-563cfdd5b8524e41bc86e8523de509a22020-11-25T01:15:38ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2019-11-011010.3389/fpls.2019.01541472622The Genome Sequence of Gossypioides kirkii Illustrates a Descending Dysploidy in PlantsJoshua A. Udall0Evan Long1Thiruvarangan Ramaraj2Thiruvarangan Ramaraj3Justin L. Conover4Daojun Yuan5Daojun Yuan6Corrinne E. Grover7Lei Gong8Mark A. Arick9Rick E. Masonbrink10Daniel G. Peterson11Jonathan F. Wendel12Crop Germplasm Research, USDA, College Station, TX, United StatesPlant Breeding and Genetics, Cornell University, Ithaca, NY, United StatesNational Center of Genome Resources, Santa Fe, NM, United StatesSchool of Computing, DePaul University, Chicago, IL, United StatesEEOB Department, Iowa State University, Ames, IA, United StatesEEOB Department, Iowa State University, Ames, IA, United StatesCollege of Plant Science and Technology, Huazhong Agricultural University, Wuhan, ChinaEEOB Department, Iowa State University, Ames, IA, United StatesKey Laboratory of Molecular Epigenetics of the Ministry of Education, Northeast Normal University, Changchun, ChinaInstitute for Genomics, Biocomputing & Biotechnology, Mississippi State University, Mississippi State, MS, United StatesGenome Informatics Facility, Iowa State University, Ames, IA, United StatesInstitute for Genomics, Biocomputing & Biotechnology, Mississippi State University, Mississippi State, MS, United StatesEEOB Department, Iowa State University, Ames, IA, United StatesOne of the extraordinary aspects of plant genome evolution is variation in chromosome number, particularly that among closely related species. This is exemplified by the cotton genus (Gossypium) and its relatives, where most species and genera have a base chromosome number of 13. The two exceptions are sister genera that have n = 12 (the Hawaiian Kokia and the East African and Madagascan Gossypioides). We generated a high-quality genome sequence of Gossypioides kirkii (n = 12) using PacBio, Bionano, and Hi-C technologies, and compared this assembly to genome sequences of Kokia (n = 12) and Gossypium diploids (n = 13). Previous analysis demonstrated that the directionality of their reduced chromosome number was through large structural rearrangements. A series of structural rearrangements were identified comparing the de novo G. kirkii genome sequence to genome sequences of Gossypium, including chromosome fusions and inversions. Genome comparison between G. kirkii and Gossypium suggests that multiple steps are required to generate the extant structural differences.https://www.frontiersin.org/article/10.3389/fpls.2019.01541/fullspeciationchromosome evolutioncottonstructural rearrangementsGossypieae |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Joshua A. Udall Evan Long Thiruvarangan Ramaraj Thiruvarangan Ramaraj Justin L. Conover Daojun Yuan Daojun Yuan Corrinne E. Grover Lei Gong Mark A. Arick Rick E. Masonbrink Daniel G. Peterson Jonathan F. Wendel |
spellingShingle |
Joshua A. Udall Evan Long Thiruvarangan Ramaraj Thiruvarangan Ramaraj Justin L. Conover Daojun Yuan Daojun Yuan Corrinne E. Grover Lei Gong Mark A. Arick Rick E. Masonbrink Daniel G. Peterson Jonathan F. Wendel The Genome Sequence of Gossypioides kirkii Illustrates a Descending Dysploidy in Plants Frontiers in Plant Science speciation chromosome evolution cotton structural rearrangements Gossypieae |
author_facet |
Joshua A. Udall Evan Long Thiruvarangan Ramaraj Thiruvarangan Ramaraj Justin L. Conover Daojun Yuan Daojun Yuan Corrinne E. Grover Lei Gong Mark A. Arick Rick E. Masonbrink Daniel G. Peterson Jonathan F. Wendel |
author_sort |
Joshua A. Udall |
title |
The Genome Sequence of Gossypioides kirkii Illustrates a Descending Dysploidy in Plants |
title_short |
The Genome Sequence of Gossypioides kirkii Illustrates a Descending Dysploidy in Plants |
title_full |
The Genome Sequence of Gossypioides kirkii Illustrates a Descending Dysploidy in Plants |
title_fullStr |
The Genome Sequence of Gossypioides kirkii Illustrates a Descending Dysploidy in Plants |
title_full_unstemmed |
The Genome Sequence of Gossypioides kirkii Illustrates a Descending Dysploidy in Plants |
title_sort |
genome sequence of gossypioides kirkii illustrates a descending dysploidy in plants |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Plant Science |
issn |
1664-462X |
publishDate |
2019-11-01 |
description |
One of the extraordinary aspects of plant genome evolution is variation in chromosome number, particularly that among closely related species. This is exemplified by the cotton genus (Gossypium) and its relatives, where most species and genera have a base chromosome number of 13. The two exceptions are sister genera that have n = 12 (the Hawaiian Kokia and the East African and Madagascan Gossypioides). We generated a high-quality genome sequence of Gossypioides kirkii (n = 12) using PacBio, Bionano, and Hi-C technologies, and compared this assembly to genome sequences of Kokia (n = 12) and Gossypium diploids (n = 13). Previous analysis demonstrated that the directionality of their reduced chromosome number was through large structural rearrangements. A series of structural rearrangements were identified comparing the de novo G. kirkii genome sequence to genome sequences of Gossypium, including chromosome fusions and inversions. Genome comparison between G. kirkii and Gossypium suggests that multiple steps are required to generate the extant structural differences. |
topic |
speciation chromosome evolution cotton structural rearrangements Gossypieae |
url |
https://www.frontiersin.org/article/10.3389/fpls.2019.01541/full |
work_keys_str_mv |
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