Evolution of a Polyphenism by Genetic Accommodation

by: Yuichiro Suzuki, Frederik H Nijhout

Science, Vol. 311, No. 5761. (3 February 2006), pp. 650-652.

View FullText article

DOI, HighWire, Pubmed, Hubmed

Reviews [Write a review of this article]

There are no reviews of this article

Find related articles from these CiteULike users

stevanspringer, mcphee, FAB-lab (group)

Find related articles with these CiteULike tags

biology, development, evolution, genetics, plasticity

Abstract

Polyphenisms are adaptations in which a genome is associated with discrete alternative phenotypes in different environments. Little is known about the mechanism by which polyphenisms originate. We show that a mutation in the juvenile hormone-regulatory pathway in Manduca sexta enables heat stress to reveal a hidden reaction norm of larval coloration. Selection for increased color change in response to heat stress resulted in the evolution of a larval color polyphenism and a corresponding change in hormonal titers through genetic accommodation. Evidently, mechanisms that regulate developmental hormones can mask genetic variation and act as evolutionary capacitors, facilitating the origin of novel adaptive phenotypes.

@article{citeulike:497518, abstract = {Polyphenisms are adaptations in which a genome is associated with discrete alternative phenotypes in different environments. Little is known about the mechanism by which polyphenisms originate. We show that a mutation in the juvenile hormone-regulatory pathway in Manduca sexta enables heat stress to reveal a hidden reaction norm of larval coloration. Selection for increased color change in response to heat stress resulted in the evolution of a larval color polyphenism and a corresponding change in hormonal titers through genetic accommodation. Evidently, mechanisms that regulate developmental hormones can mask genetic variation and act as evolutionary capacitors, facilitating the origin of novel adaptive phenotypes.}, author = {Suzuki, Yuichiro and Nijhout, Frederik H. }, citeulike-article-id = {497518}, doi = {http://dx.doi.org/10.1126/science.1118888}, journal = {Science}, keywords = {development}, month = {February}, number = {5761}, pages = {650--652}, posted-at = {2006-02-08 02:11:05}, priority = {2}, title = {Evolution of a Polyphenism by Genetic Accommodation}, url = {http://dx.doi.org/10.1126/science.1118888}, volume = {311}, year = {2006} }

RIS record

TY - JOUR ID - citeulike:497518 L3 - citeulike-article-id:497518 TI - Evolution of a Polyphenism by Genetic Accommodation JF - Science VL - 311 IS - 5761 SP - 650 EP - 652 N2 - Polyphenisms are adaptations in which a genome is associated with discrete alternative phenotypes in different environments. Little is known about the mechanism by which polyphenisms originate. We show that a mutation in the juvenile hormone-regulatory pathway in Manduca sexta enables heat stress to reveal a hidden reaction norm of larval coloration. Selection for increased color change in response to heat stress resulted in the evolution of a larval color polyphenism and a corresponding change in hormonal titers through genetic accommodation. Evidently, mechanisms that regulate developmental hormones can mask genetic variation and act as evolutionary capacitors, facilitating the origin of novel adaptive phenotypes. KW - development AU - Suzuki, Yuichiro AU - Nijhout, Frederik PY - 2006/02/03/ UR - http://dx.doi.org/10.1126/science.1118888 ER -

RIS BibTeX