Strong Selection Against Early Generation Hybrids in Joshua Tree Hybrid Zone Not Explained by Pollinators Alone

Frontiers in Plant Science
Anne M RoyerC I Smith

Abstract

Coevolution frequently plays an important role in diversification, but the role of obligate pollination mutualisms in the maintenance of hybrid zones has rarely been investigated. Like most members of the genus Yucca, the two species of Joshua tree (Yucca brevifolia and Yucca jaegeriana) are involved in a tightly coevolved mutualism with yucca moths. There is strong evidence of a history of coevolution between Joshua trees and their moth pollinators. We use a geographic clines approach in the Joshua tree hybrid zone to ask if selection by the moths may currently contribute to maintaining separation between these species. We compare genomic, phenotypic, and pollinator frequency clines to test whether pollinators maintain the hybrid zone or follow it as passive participants. The results reveal dramatic overlapping genomic and pollinator clines, consistent with a narrow hybrid zone maintained by strong selection. Wider phenotypic clines and a chloroplast genomic cline displaced opposite the expected direction suggest that pollinators are not the main source of selection maintaining the hybrid zone. Rather, it seems that high levels of reproductive isolation, likely acting through multiple barriers and involving many parts of the g...Continue Reading

References

Oct 12, 1989·Nature·N H Barton, G M Hewitt
Nov 9, 2001·Annual Review of Genetics·J M Burke, M L Arnold
Mar 20, 2003·Evolution; International Journal of Organic Evolution·Richard R Hudson, Michael Turelli
Sep 25, 2003·Evolution; International Journal of Organic Evolution·Anne TsitroneDonald A Levin
Feb 3, 2007·The American Naturalist·Julie W Smith, Craig W Benkman
Mar 16, 2007·Ecology Letters·Gary G MittelbachMichael Turelli
Jul 6, 2007·Heredity·R J A Buggs
May 3, 2008·Evolution; International Journal of Organic Evolution·Mathias CurratLaurent Excoffier
May 9, 2008·The American Naturalist·William GodsoeOlle Pellmyr
Jul 22, 2008·Evolution; International Journal of Organic Evolution·David B LowryJohn H Willis
Jul 23, 2008·Ecology Letters·Julianno B M SambattiLoren H Rieseberg
Aug 30, 2008·Evolution; International Journal of Organic Evolution·Christopher Irwin SmithOlle Pellmyr
Aug 8, 2009·The New Phytologist·William GodsoeOlle Pellmyr
Nov 7, 2009·Evolution; International Journal of Organic Evolution·James M SobelDouglas W Schemske
Oct 19, 2010·The American Naturalist·Jeremy B Yoder, Scott L Nuismer
Dec 2, 2010·Journal of Evolutionary Biology·W GodsoeO Pellmyr
Jul 1, 1988·Trends in Ecology & Evolution·G M Hewitt
Sep 1, 1991·Trends in Ecology & Evolution·C MitterD J Futuyma
May 31, 2011·American Journal of Botany·Diane R CampbellSteven E Travers
Dec 20, 2011·Molecular Phylogenetics and Evolution·David M AlthoffOlle Pellmyr
Jun 29, 2012·Molecular Ecology·David P L Toews, Alan Brelsford
Dec 5, 2012·Evolution; International Journal of Organic Evolution·Annika M Moe, George D Weiblen
May 25, 2013·Molecular Ecology·Julian CatchenWilliam A Cresko
Dec 10, 2013·Trends in Ecology & Evolution·David M AlthoffMarc T J Johnson
Jan 1, 2014·Molecular Ecology Resources·Elizabeth P DerryberryRobb T Brumfield
Jan 24, 2014·Evolution; International Journal of Organic Evolution·James M Sobel, Grace F Chen
Sep 10, 2014·Journal of Evolutionary Biology·R DoblerD K Dowling
Sep 17, 2014·Molecular Ecology·Dan G BockLoren H Rieseberg
Sep 17, 2014·The American Naturalist·David H HembryKari Roesch Goodman
Feb 17, 2015·Molecular Ecology Resources·Naama M KopelmanItay Mayrose
May 7, 2015·The New Phytologist·Eric BaackDaniel Ortiz-Barrientos
Apr 7, 2017·Molecular Ecology Resources·David B LowryAndrew Storfer
Oct 1, 1998·Evolution; International Journal of Organic Evolution·Jim Leebens-MackMarcus Brock
Mar 1, 1989·Evolution; International Journal of Organic Evolution·Jerry A Coyne, H Allen Orr
May 1, 1980·Evolution; International Journal of Organic Evolution·Daniel H Janzen
Feb 1, 1997·Evolution; International Journal of Organic Evolution·Jerry A Coyne, H Allen Orr
May 9, 2017·Evolution Letters·Ben WielstraJan W Arntzen

❮ Previous
Next ❯

Citations

Apr 14, 2021·American Journal of Botany·Christopher Irwin SmithRamona Flatz

❮ Previous
Next ❯

Methods Mentioned

BETA
genotyping
PCR

Software Mentioned

HZAR
STRUCTURE
ARCGIS ARCMAP
STRUCTURE HARVESTER
hybrid lab
Near Table
CodonCode Aligner
STACKS
CLUMPAK
R

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.