Journal ArticleDOI
Lineage Divergence in Coast Redwood (Sequoia sempervirens), Detected by a New Set of Nuclear Microsatellite Loci
TLDR
Redwood may have difficulty adapting to new climatic conditions or of migrating into displaced habitats with anticipated climate change, and the southern lineage of populations is likely to be at greatest risk and is therefore of conservation priority.Abstract:
We developed a suite of tetranucleotide microsatellite loci and applied them to a study of genetic variation across the geographic range of coast redwood [Sequoia sempervirens (D. Don) Endl.]. The objectives of the study were to determine if the microsatellite loci could provide useful information on genetic diversity in this hexaploid species and to investigate earlier reports of divergent lineages within coast redwood. The microsatellite loci were highly variable, yielding a total of 142 alleles. Up to six alleles were detected in each individual consistent with the ploidy of coast redwood and suggesting that parental genomes must have been at least partially homologous. This does not rule out autoployploidy in the evolution of the redwood genome. We treated the microsatellite alleles as presence-absence data and we also estimated full genotypes assuming peak intensities varied with allele dosage. Both types of analyses revealed similar trends. Variation within the 17 watersheds sampled, explai...read more
Citations
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Journal ArticleDOI
What do we know about UK household adaptation to climate change? A systematic review
TL;DR: It is found that UK households struggle to build long-term adaptive capacity and are reliant upon traditional reactive coping responses, and more high-quality empirical research is urgently needed on household adaptation to climate change.
Journal ArticleDOI
Whole genome duplication in coast redwood (Sequoia sempervirens) and its implications for explaining the rarity of polyploidy in conifers
TL;DR: It is suggested that the rarity of polyploidy in gymnosperms may be due to slow diploidization in this clade, and phylogenetic inference, Bayesian concordance analysis and paralog age distributions resolve relationships among gene copies in hexaploid coast redwood and close relatives.
Journal ArticleDOI
Regeneration Dynamics of Coast Redwood, a Sprouting Conifer Species: A Review with Implications for Management and Restoration
TL;DR: Thinning of sprouts can accelerate individual tree growth, providing an effective restoration strategy to accelerate formation of large trees and old forest structures or increase stand growth for timber production.
Journal ArticleDOI
Two New Zealand-based common garden experiments of the range-wide ‘Kuser’ clonal collection of Sequoia sempervirens reveal patterns of provenance variation in growth and wood properties
TL;DR: A high clonal repeatability for the above traits and it demonstrated a low genotype × environment interaction is found and new insights in the genetic variability of S. sempervirens provenances are provided.
Journal ArticleDOI
Genetic structure of coast redwood (Sequoia sempervirens [D. Don] Endl.) populations in and outside of the natural distribution range based on nuclear and chloroplast microsatellite markers.
TL;DR: The high number of haplotypes found in the data sets based on six cpSSR markers and low genetic differentiation based on 12 nuclear SSRs found in this study helps to study and better understand population genetic structure of this complex polyploid tree and supports the selection of potential genotypes for German forestry.
References
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Inference of population structure using multilocus genotype data
TL;DR: Pritch et al. as discussed by the authors proposed a model-based clustering method for using multilocus genotype data to infer population structure and assign individuals to populations, which can be applied to most of the commonly used genetic markers, provided that they are not closely linked.
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Bayesian measures of model complexity and fit
TL;DR: In this paper, the authors consider the problem of comparing complex hierarchical models in which the number of parameters is not clearly defined and derive a measure pD for the effective number in a model as the difference between the posterior mean of the deviances and the deviance at the posterior means of the parameters of interest, which is related to other information criteria and has an approximate decision theoretic justification.
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TreeView : an application to display phylogenetic trees on personal computers
TL;DR: TreeView is a simple, easy to use phylogenetic tree viewing utility that runs under both MacOS (on Apple Macintosh computers) and under Microsoft Windows on Intel based computers, the two most common personal computers used by biologists.
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Inference of Population Structure Using Multilocus Genotype Data: Linked Loci and Correlated Allele Frequencies
TL;DR: Extensions to the method of Pritchard et al. for inferring population structure from multilocus genotype data are described and methods that allow for linkage between loci are developed, which allows identification of subtle population subdivisions that were not detectable using the existing method.