Linked Life Data

17609538

Source:http://linkedlifedata.com/resource/pubmed/id/17609538

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2007-9-3
pubmed:databankReference
http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AY587907, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AY587908, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/AY918895, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/DQ924367, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/DQ924368, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/DQ924369, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/DQ924370, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/DQ924371, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/DQ924372, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/DQ924373, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/DQ924374, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/DQ924375, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/DQ924376, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/DQ924377, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/DQ924378, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/EF666488
pubmed:abstractText
Butterfly long-wavelength (L) photopigments are interesting for comparative studies of adaptive evolution because of the tremendous phenotypic variation that exists in their wavelength of peak absorbance (lambda(max) value). Here we present a comprehensive survey of L photopigment variation by measuring lambda(max) in 12 nymphalid and 1 riodinid species using epi-microspectrophotometry. Together with previous data, we find that L photopigment lambda(max) varies from 510-565 nm in 22 nymphalids, with an even broader 505- to 600-nm range in riodinids. We then surveyed the L opsin genes for which lambda(max) values are available as well as from related taxa and found 2 instances of L opsin gene duplication within nymphalids, in Hermeuptychia hermes and Amathusia phidippus, and 1 instance within riodinids, in the metalmark butterfly Apodemia mormo. Using maximum parsimony and maximum likelihood ancestral state reconstructions to map the evolution of spectral shifts within the L photopigments of nymphalids, we estimate the ancestral pigment had a lambda(max) = 540 nm +/- 10 nm standard error and that blueshifts in wavelength have occurred at least 4 times within the family. We used ancestral state reconstructions to investigate the importance of several amino acid substitutions (Ile17Met, Ala64Ser, Asn70Ser, and Ser137Ala) previously shown to have evolved under positive selection that are correlated with blue spectral shifts. These reconstructions suggest that the Ala64Ser substitution has indeed occurred along the newly identified blueshifted L photopigment lineages. Substitutions at the other 3 sites may also be involved in the functional diversification of L photopigments. Our data strongly suggest that there are limits to the evolution of L photopigment spectral shifts among species with only one L opsin gene and that opsin gene duplication broadens the potential range of lambda(max) values.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0737-4038
pubmed:author
pubmed:issnType
Print
pubmed:volume
24
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2016-28
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Gene duplication is an evolutionary mechanism for expanding spectral diversity in the long-wavelength photopigments of butterflies.
pubmed:affiliation
Department of Ecology and Evolutionary Biology, University of California, Irvine, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, N.I.H., Extramural