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Polyglutamine variation in a flowering time protein correlates with island age in a Hawaiian plant radiation.

Authors
  • Lindqvist, Charlotte
  • Laakkonen, Liisa
  • Albert, Victor A
Type
Published Article
Journal
BMC Evolutionary Biology
Publisher
Springer (Biomed Central Ltd.)
Publication Date
Jan 01, 2007
Volume
7
Pages
105–105
Identifiers
PMID: 17605781
Source
Medline
License
Unknown

Abstract

In the Hawaiian mint FCA system, we infer that contraction of slightly deleterious CAG repeats occurred because of competition for resources along the natural environmental cline of the island chain. The observed geographical structure of FCA variation and its correlation with morphologies expected from Arabidopsis mutant studies may indicate that developmental pleiotropy played a role in the diversification of the mints. This discovery is important in that it concurs with other suggestions that repetitive amino acid motifs might provide a mechanism for driving morphological evolution, and that variation at such motifs might permit rapid tuning to environmental change.

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