Widespread incomplete lineage sorting and introgression shaped adaptive radiation in the Gossypium genus

Copyright © 2023 The Author(s). Published by Elsevier Inc. All rights reserved..

Cotton (Gossypium) stands as a crucial economic crop, serving as the primary source of natural fiber for the textile sector. However, the evolutionary mechanisms driving speciation within the Gossypium genus remain unresolved. In this investigation, we leveraged 25 Gossypium genomes and introduced four novel assemblies-G. harknessii, G. gossypioides, G. trilobum, and G. klotzschianum (Gklo)-to delve into the speciation history of this genus. Notably, we encountered intricate phylogenies potentially stemming from introgression. These complexities are further compounded by incomplete lineage sorting (ILS), a factor likely to have been instrumental in shaping the swift diversification of cotton. Our focus subsequently shifted to the rapid radiation episode during a concise period in Gossypium evolution. For a recently diverged lineage comprising G. davidsonii, Gklo, and G. raimondii, we constructed a finely detailed ILS map. Intriguingly, this analysis revealed the non-random distribution of ILS regions across the reference Gklo genome. Moreover, we identified signs of robust natural selection influencing specific ILS regions. Noteworthy variations pertaining to speciation emerged between the closely related sister species Gklo and G. davidsonii. Approximately 15.74% of speciation structural variation genes and 12.04% of speciation-associated genes were estimated to intersect with ILS signatures. These findings enrich our understanding of the role of ILS in adaptive radiation, shedding fresh light on the intricate speciation history of the Gossypium genus.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:5

Enthalten in:

Plant communications - 5(2024), 2 vom: 12. Feb., Seite 100728

Sprache:

Englisch

Beteiligte Personen:

Xu, Yanchao [VerfasserIn]
Wei, Yangyang [VerfasserIn]
Zhou, Zhongli [VerfasserIn]
Cai, Xiaoyan [VerfasserIn]
Boden, Scott A [VerfasserIn]
Umer, Muhammad Jawad [VerfasserIn]
Safdar, Luqman B [VerfasserIn]
Liu, Yuling [VerfasserIn]
Jin, Dingsha [VerfasserIn]
Hou, Yuqing [VerfasserIn]
Wang, Yuhong [VerfasserIn]
Wall, Sarah Brooke [VerfasserIn]
Wang, Kunbo [VerfasserIn]
Yu, Shuxun [VerfasserIn]
Zhang, Baohong [VerfasserIn]
Peng, Renhai [VerfasserIn]
Liu, Fang [VerfasserIn]

Links:

Volltext

Themen:

Cotton speciation
Gene tree resolution
Gossypium genus
ILS
Incomplete lineage sorting
Journal Article
Phylogenetic analysis

Anmerkungen:

Date Completed 15.02.2024

Date Revised 19.02.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.xplc.2023.100728

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM362974195