Predicting Adaptive Genetic Variation of Loblolly Pine (Pinus taeda L.) Populations Under Projected Future Climates Based on Multivariate Models

Тип публикации: статья из журнала

Год издания: 2019

Идентификатор DOI: 10.1093/jhered/esz065

Ключевые слова: climate change, Generalized Dissimilarity Modeling, Gradient Forests, landscape genomics, local adaptation, Redundancy Analysis

Аннотация: Greenhouse gas emission and global warming are likely to cause rapid climate change within the natural range of loblolly pine over the next few decades, thus bringing uncertainty to their adaptation to the environment. Here, we studied adaptive genetic variation of loblolly pine and correlated genetic variation with bioclimatic variables using multivariate modeling methods-Redundancy Analysis, Generalized Dissimilarity Modeling, and Gradient Forests. Studied trees (N = 299) were originally sampled from their native range across eight states on the east side of the Mississippi River. Genetic variation was calculated using a total of 44,317 single-nucleotide polymorphisms acquired by exome target sequencing. The fitted models were used to predict the adaptive genetic variation on a large spatial and temporal scale. We observed east-to-west spatial genetic variation across the range, which presented evidence of isolation by distance. Different key factors drive adaptation of loblolly pine from different geographical regions. Trees residing near the northeastern edge of the range, spanning across Delaware and Maryland and mountainous areas of  Virginia, North Carolina, South Carolina, and northern Georgia, were identified to be most likely impacted by climate change based on the large difference in genetic composition under current and future climate conditions. This study provides new perspectives on adaptive genetic variation of loblolly pine in response to different climate scenarios, and the results can be used to target particular populations while developing adaptive forest management guidelines. © The American Genetic Association 2019. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

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Издание

Журнал: The Journal of heredity

Выпуск журнала: Vol. 110, Is. 7

Номера страниц: 857-865

ISSN журнала: 14657333

Издатель: NLM (Medline)

Авторы

  • Lu M. (Department of Biological Sciences, University of Calgary, Calgary, Canada)
  • Krutovsky K.V. (Department of Forest Genetics and Forest Tree Breeding, Georg-August-University of Göttingen, Göttingen, Germany, Laboratory of Population Genetics, N. I. Vavilov Institute of General Genetics, Russian Academy of SciencesMoscow, Russian Federation, Laboratory of Forest Genomics, Genome Research and Education Center, Institute of Fundamental Biology and Biotechnology, Siberian Federal University, Krasnoyarsk, Russian Federation, Department of Ecosystem Science and Management, Texas A&M University, TX, College Station, Molecular and Environmental Plant Sciences Program, Texas A&M University, TX, College Station)
  • Loopstra C.A. (Department of Ecosystem Science and Management, Texas A&M University, TX, College Station, Molecular and Environmental Plant Sciences Program, Texas A&M University, TX, College Station)

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