期刊
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
卷 377, 期 1848, 页码 -出版社
ROYAL SOC
DOI: 10.1098/rstb.2021.0008
关键词
quantitative genetics; local adaptation; phenotype; provenance; conservation
类别
资金
- National Science Foundation (NSF) [1656099, 1655344]
- Direct For Biological Sciences
- Division Of Environmental Biology [1656099] Funding Source: National Science Foundation
- Direct For Biological Sciences
- Division Of Environmental Biology [1655344] Funding Source: National Science Foundation
This study examines the genetic and plastic variation levels of red spruce populations in response to climate change. The findings suggest that red spruce has some genetic variation and plasticity, but the plasticity of its phenology traits may have negative impacts on growth under warmer climates.
Shifting range limits are predicted for many species as the climate warms. However, the rapid pace of climate change will challenge the natural dispersal capacity of long-lived, sessile organisms such as forest trees. Adaptive responses of populations will, therefore, depend on levels of genetic variation and plasticity for climate-responsive traits, which likely vary across the range due to expansion history and current patterns of selection. Here, we study levels of genetic and plastic variation for phenology and growth traits in populations of red spruce (Picea rubens), from the range core to the highly fragmented trailing edge. We measured more than 5000 offspring sampled from three genetically distinct regions (core, margin and edge) grown in three common gardens replicated along a latitudinal gradient. Genetic variation in phenology and growth showed low to moderate heritability and differentiation among regions, suggesting some potential to respond to selection. Phenology traits were highly plastic, but this plasticity was generally neutral or maladaptive in the effect on growth, revealing a potential liability under warmer climates. These results suggest future climate adaptation will depend on the regional availability of genetic variation in red spruce and provide a resource for the design and management of assisted gene flow. This article is part of the theme issue 'Species' ranges in the face of changing environments (Part II)'.
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