Zur Kurzanzeige

dc.contributor.author
Xu, Shuqing
dc.contributor.author
Schlüter, Philipp M.
dc.contributor.author
Grossniklaus, Ueli
dc.contributor.author
Schiestl, Florian P.
dc.date.accessioned
2018-11-05T08:48:47Z
dc.date.available
2017-06-10T09:27:42Z
dc.date.available
2018-11-05T08:48:47Z
dc.date.issued
2012-08-16
dc.identifier.issn
1553-7390
dc.identifier.issn
1553-7404
dc.identifier.other
10.1371/journal.pgen.1002889
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/56214
dc.identifier.doi
10.3929/ethz-b-000056214
dc.description.abstract
In plants, pollinator adaptation is considered to be a major driving force for floral diversification and speciation. However, the genetic basis of pollinator adaptation is poorly understood. The orchid genus Ophrys mimics its pollinators' mating signals and is pollinated by male insects during mating attempts. In many species of this genus, chemical mimicry of the pollinators' pheromones, especially of alkenes with different double-bond positions, plays a key role for specific pollinator attraction. Thus, different alkenes produced in different species are probably a consequence of pollinator adaptation. In this study, we identify genes that are likely involved in alkene biosynthesis, encoding stearoyl-acyl carrier protein (ACP) desaturases (SAD), in three closely related Ophrys species, O. garganica, O. sphegodes, and O. exaltata. Combining floral odor and gene expression analyses, two SAD homologs (SAD1/2) showed significant association with the production of (Z)-9- and (Z)-12-alkenes that were abundant in O. garganica and O. sphegodes, supporting previous biochemical data. In contrast, two other newly identified homologs (SAD5/6) were significantly associated with (Z)-7-alkenes that were highly abundant only in O. exaltata. Both molecular evolutionary analyses and pollinator preference tests suggest that the alkenes associated with SAD1/2 and SAD5/6 are under pollinator-mediated divergent selection among species. The expression patterns of these genes in F1 hybrids indicate that species-specific expression differences in SAD1/2 are likely due to cis-regulation, while changes in SAD5/6 are likely due to trans-regulation. Taken together, we report a genetic mechanism for pollinator-mediated divergent selection that drives adaptive changes in floral alkene biosynthesis involved in reproductive isolation among Ophrys species.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Public Library of Science (PLoS)
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
The Genetic Basis of Pollinator Adaptation in a Sexually Deceptive Orchid
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
ethz.journal.title
PLoS Genetics
ethz.journal.volume
8
en_US
ethz.journal.issue
8
en_US
ethz.journal.abbreviated
PLoS Genet
ethz.pages.start
e1002889
en_US
ethz.size
9 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.nebis
005410305
ethz.publication.place
San Francisco, CA
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02720 - Institut für Integrative Biologie / Institute of Integrative Biology::03706 - Widmer, Alexander / Widmer, Alexander
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02720 - Institut für Integrative Biologie / Institute of Integrative Biology::03706 - Widmer, Alexander / Widmer, Alexander
ethz.date.deposited
2017-06-10T09:29:33Z
ethz.source
ECIT
ethz.identifier.importid
imp59364fce3221982722
ethz.ecitpid
pub:90453
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-18T09:51:49Z
ethz.rosetta.lastUpdated
2018-11-05T08:48:53Z
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=The%20Genetic%20Basis%20of%20Pollinator%20Adaptation%20in%20a%20Sexually%20Deceptive%20Orchid&rft.jtitle=PLoS%20Genetics&rft.date=2012-08-16&rft.volume=8&rft.issue=8&rft.spage=e1002889&rft.issn=1553-7390&1553-7404&rft.au=Xu,%20Shuqing&Schl%C3%BCter,%20Philipp%20M.&Grossniklaus,%20Ueli&Schiestl,%20Florian%20P.&rft.genre=article&
 Suchen via SFX

Dateien zu diesem Eintrag

Thumbnail

Publikationstyp

Zur Kurzanzeige