期刊
EVOLUTION
卷 68, 期 1, 页码 32-47出版社
WILEY
DOI: 10.1111/evo.12284
关键词
Colonization; gene duplication; genetic correlations; life history; niche construction; ontogeny; phenology; pleiotropy
资金
- John Simon Guggenheim Foundation
- National Evolutionary Synthesis Center (National Science Foundation) [EF-0905606]
- National Institute for Mathematical and Biological Synthesis
- National Science Foundation
- U.S. Department of Homeland Security
- U.S. Department of Agriculture through NSF [EF-0832858]
- University of Tennessee, Knoxville
- Direct For Biological Sciences
- Division Of Environmental Biology [1020963] Funding Source: National Science Foundation
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1146383] Funding Source: National Science Foundation
- Div Of Biological Infrastructure
- Direct For Biological Sciences [1300426] Funding Source: National Science Foundation
This case study of adaptation in Arabidopsis thaliana shows that natural selection on early life stages can be intense and can influence the evolution of subsequent traits. Two mechanisms contribute to this influence: pleiotropy across developmental stages and developmental niche construction. Examples are given of pleiotropy of environmentally cued development across life stages, and potential ways that pleiotropy can be relieved are discussed. In addition, this case study demonstrates how the timing of prior developmental transitions determines the seasonal environment experienced subsequently, and that such developmental niche construction alters phenotypic expression of subsequent traits, the expression of genetic variation of those traits, and natural selection on those traits and alleles associated with them. As such, developmental niche construction modifies pleiotropic relationships across the life cycle in ways that influence the dynamics of adaptation. Understanding the genetic basis of life-cycle variation therefore requires consideration of environmental effects on pleiotropy.
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