Quercus

Aldrich, Preston R.; Cavender‐Bares, Jeannine

doi:10.1007/978-3-642-21250-5_6

Cited by 58 publications

(24 citation statements)

References 290 publications

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“…The Oaks of the Americas phylogeny was pruned to include only the species included in the present study. The species represent all of the four major clades within the American oaks, a monophyletic group of approximately 260 species [45]. From the full genus, which includes approximately 400 species globally, the Asian cycle cup oaks (Quercus subgenus Cyclobalanopsis) and the Mediterranean cerris group of oaks (Quercus section Cerris) are not represented [46].…”

Section: Phylogenetic Informationmentioning

confidence: 99%

Associations of Leaf Spectra with Genetic and Phylogenetic Variation in Oaks: Prospects for Remote Detection of Biodiversity

Cavender‐Bares

Meireles

Couture³

et al. 2016

Remote Sensing

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154

138

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Species and phylogenetic lineages have evolved to differ in the way that they acquire and deploy resources, with consequences for their physiological, chemical and structural attributes, many of which can be detected using spectral reflectance from leaves. Recent technological advances for assessing optical properties of plants offer opportunities to detect functional traits of organisms and differentiate levels of biological organization across the tree of life. Here, we connect leaf-level full range spectral data (400-2400 nm) of leaves to the hierarchical organization of plant diversity within the oak genus (Quercus) using field and greenhouse experiments in which environmental factors and plant age are controlled. We show that spectral data significantly differentiate populations within a species and that spectral similarity is significantly associated with phylogenetic similarity among species. We further show that hyperspectral information allows more accurate classification of taxa than spectrally-derived traits, which by definition are of lower dimensionality. Finally, model accuracy increases at higher levels in the hierarchical organization of plant diversity, such that we are able to better distinguish clades than species or populations. This pattern supports an evolutionary explanation for the degree of optical differentiation among plants and demonstrates potential for remote detection of genetic and phylogenetic diversity.

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Section: Phylogenetic Informationmentioning

confidence: 99%

Associations of Leaf Spectra with Genetic and Phylogenetic Variation in Oaks: Prospects for Remote Detection of Biodiversity

Cavender‐Bares

Meireles

Couture³

et al. 2016

Remote Sensing

Self Cite

154

138

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“…Oaks are both economically and ecologically important keystone forest tree species by providing food and shelter for wildlife, and wood and paper products for human use (McShea et al 2007, Aldrich & Cavender-Bares 2011. They are mostly distributed throughout the Northern hemisphere (Nixon 1993, Aldrich & Cavender-Bares 2011 but can also be found in the southern hemisphere -Quercus humboldtii in Colombia (Ávila et al 2010).…”

Section: Introductionmentioning

confidence: 99%

“…They are mostly distributed throughout the Northern hemisphere (Nixon 1993, Aldrich & Cavender-Bares 2011 but can also be found in the southern hemisphere -Quercus humboldtii in Colombia (Ávila et al 2010). Genus Quercus comprises more than 500 species subdivided into several distinct monophyletic groups (Manos et al 1999, Manos & Stanford 2001.…”

Section: Introductionmentioning

confidence: 99%

“…Genus Quercus comprises more than 500 species subdivided into several distinct monophyletic groups (Manos et al 1999, Manos & Stanford 2001. White oaks (section Quercus) are distributed across the Americas and Eurasia, red oaks (section Lobatae), live oaks (section Virentes), golden cup oaks (section Protobalanus) are restricted to the Americas, while cerris oaks (section Cerris) and cycle cup oaks (subgenus Cyclobalanopsis) occur in Eurasia and Asia, respectively (Aldrich & Cavender-Bares 2011). Closely related oak species frequently hybridize where distribution ranges overlap (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Oak species are characterized by considerable variation in morphological and physiological characters as the result of phenotypic plasticity, within-species genetic variation and interspecifi c hybridization (Aldrich & Cavender-Bares 2011). Consequently, no single diagnostic morphological or genetic marker can unambiguously distinguish one species from other members of the same taxonomic section , Mariette et al 2002, Hipp & Weber 2008.…”

Section: Introductionmentioning

confidence: 99%

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Interspecific gene flow and maintenance of species integrity in oaks

Gailing

Curtu

2014

Ann. For. Res.

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Abstract. Oak species show a wide variation in morphological and physiological characters, and boundaries between closely related species are often not clear-cut. Still, despite frequent interspecific gene flow, oaks maintain distinct morphological and physiological adaptations. In sympatric stands, spatial distribution of species with different ecological requirements is not random but constrained by soil and other micro-environmental factors. Here, we discuss factors that may influence the maintenance of the integrity of oak species in the face of interspecific gene flow. Pre-zygotic isolation (e.g. cross incompatibilities, asynchrony in flowering, pollen competition) and post-zygotic isolation (divergent selection) contribute to the maintenance of species integrity in sympatric oak stands. The antagonistic effects of interspecific gene flow and divergent selection are reflected in the low genetic differentiation between hybridizing oak species at most genomic regions interspersed by regions with signatures of divergent selection (outlier regions). In the near future, the availability of high-density genetic linkage maps anchored to scaffolds of a sequenced Q. robur genome will allow to characterize the underlying genes in these outlier regions and their putative role in reproductive isolation between species. Reciprocal transplant experiments of seedlings between parental environments can be used to characterize selection on outlier genes. High transferability of gene-based markers will enable comparative outlier screens in different oak species.

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The role of diversification in community assembly of the oaks (QuercusL.) across the continental U.S.

Cavender‐Bares

Kothari

Meireles

et al. 2018

American J of Botany

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Our results support the hypotheses that (1) interspecific interactions were important in parallel adaptive radiation of the genus into a range of habitats across the continent and (2) that the diversification process is a critical driver of community assembly. Functional convergence of complementary species from distinct clades adapted to the same local habitats is a likely mechanism that allows distantly related species to coexist. Our findings contribute to an explanation of the long-term maintenance of high oak diversity and the dominance of the oak genus in North America.

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Quercus

Cited by 58 publications

References 290 publications

Associations of Leaf Spectra with Genetic and Phylogenetic Variation in Oaks: Prospects for Remote Detection of Biodiversity

Associations of Leaf Spectra with Genetic and Phylogenetic Variation in Oaks: Prospects for Remote Detection of Biodiversity

Interspecific gene flow and maintenance of species integrity in oaks

The role of diversification in community assembly of the oaks (QuercusL.) across the continental U.S.

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