Combined Analyses of Phenotype, Genotype and Climate Implicate Local Adaptation as a Driver of Diversity inEucalyptus microcarpa(Grey Box)

Rebecca Jordan, Suzanne M. Prober, Ary A. Hoffmann, Shannon K. Dillon

Research output: Contribution to journalArticlepeer-review

6 Citations (Web of Science)

Abstract

Trees are a keystone species in many ecosystems and a critical component of ecological restoration. Understanding their capacity to respond to climate change is essential for conserving biodiversity and determining appropriate restoration seed sources. Patterns of local adaptation to climate between populations within a species can inform such conservation decisions and are often investigated from either a quantitative trait or molecular genetic basis. Here, we present findings from a combined analysis of phenotype (quantitative genetic analysis), genotype (single nucleotide polymorphism (SNP) trait associations), and climate associations. We draw on the strength of this combined approach to investigate pre-existing climate adaptation and its genetic basis inEucalyptus microcarpa(Grey box), an important tree for ecological restoration in south-eastern Australia. Phenotypic data from a 26-year-old provenance trial demonstrated significant genetic variation in growth and leaf traits at both the family and provenance levels. Growth traits were only associated with temperature, whilst leaf traits were associated with temperature, precipitation and aridity. Genotyping of 40 putatively adaptive SNPs from previous genome-wide analyses identified 9 SNPs associated with these traits. Drawing on previous SNP-climate association results, several associations were identified between all three comparisons of phenotype, genotype and climate. By combining phenotypic with genomic analyses, these results corroborate genomic findings and enhance understanding of climate adaptation inE. microcarpa. We discuss the implication of these results for conservation management and restoration under climate change.

Original languageEnglish
Article number495
Number of pages23
JournalForests
Volume11
Issue number5
DOIs
Publication statusPublished - 1 May 2020
Externally publishedYes

Fingerprint

Dive into the research topics of 'Combined Analyses of Phenotype, Genotype and Climate Implicate Local Adaptation as a Driver of Diversity inEucalyptus microcarpa(Grey Box)'. Together they form a unique fingerprint.

Cite this