Rapid evolution of a family-diagnostic trait artificial selection and correlated responses in wild radish, Raphanus raphanistrum

Rapid evolution of a family-diagnostic trait : artificial selection and correlated responses in wild radish, Raphanus raphanistrum

© 2023 The Authors New Phytologist © 2023 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 239(2023), 6 vom: 02. Sept., Seite 2382-2388
1. Verfasser: Conner, Jeffrey K (VerfasserIn)
Weitere Verfasser: Issaka Salia, Ousseini, Zhao, Zhi-Gang, Knapczyk, Frances, Sahli, Heather, Koelling, Vanessa A, Karoly, Keith
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, U.S. Gov't, Non-P.H.S. Brassicaceae Raphanus raphanistrum adaptation artificial selection conserved traits correlated responses evolutionary constraint genetic variation
Beschreibung
Zusammenfassung:© 2023 The Authors New Phytologist © 2023 New Phytologist Foundation.
The mechanisms underlying trait conservation over long evolutionary time scales are poorly known. These mechanisms fall into the two broad and nonmutually exclusive categories of constraint and selection. A variety of factors have been hypothesized to constrain trait evolution. Alternatively, selection can maintain similar trait values across many species if the causes of selection are also relatively conserved, while many sources of constraint may be overcome over longer periods of evolutionary divergence. An example of deep trait conservation is tetradynamy in the large family Brassicaceae, where the four medial stamens are longer than the two lateral stamens. Previous work has found selection to maintain this difference in lengths, which we call anther separation, in wild radish, Raphanus raphanistrum. Here, we test the constraint hypothesis using five generations of artificial selection to reduce anther separation in wild radish. We found a rapid linear response to this selection, with no evidence for depletion of genetic variation and correlated responses to this selection in only four of 15 other traits, suggesting a lack of strong constraint. Taken together, available evidence suggests that tetradynamy is likely to be conserved due to selection, but the function of this trait remains unclear
Beschreibung:Date Completed 18.08.2023
Date Revised 20.08.2023
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.19125