The evolution and global migration of the Aceraceae

Boulter, M. C.; Benfield, Joanna; Fisher, Helen C.; Gee, David; Lhoták, Martin

doi:10.1098/rstb.1996.0058

Cited by 15 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The very short internal branches in our trees suggest a rapid differentiation of the main lineages of Acer within a short period of time. This is consistent with earlier studies that have analyzed the distribution of the rich fossil record (Boulter et al, 1996;Manchester, 1999;Wolfe & Tanai, 1987), which have suggested a burst of diversification during the second half of the Eocene. Based on nuclear data, Li et al (2019) estimated that most sections in Acer had originated by the late Eocene (33-38 Mya).…”

Section: Phylogenomic Reconstructionsupporting

confidence: 93%

Plastome comparative genomics in maples resolves the infrageneric backbone relationships

Areces-Berazain

Wang

Hinsinger

et al. 2020

PeerJ

View full text Add to dashboard Cite

Maples (Acer) are among the most diverse and ecologically important tree genera of the north-temperate forests. They include species highly valued as ornamentals and as a source of timber and sugar products. Previous phylogenetic studies employing plastid markers have not provided sufficient resolution, particularly at deeper nodes, leaving the backbone of the maple plastid tree essentially unresolved. We provide the plastid genome sequences of 16 species of maples spanning the sectional diversity of the genus and explore the utility of these sequences as a source of information for genetic and phylogenetic studies in this group. We analyzed the distribution of different types of repeated sequences and the pattern of codon usage, and identified variable regions across the plastome. Maximum likelihood and Bayesian analyses using two partitioning strategies were performed with these and previously published sequences. The plastomes ranged in size from 155,212 to 157,023 bp and had structure and gene content except for Acer palmatum (sect. Palmata), which had longer inverted repeats and an additional copy of the rps19 gene. Two genes, rps2 and rpl22, were found to be truncated at different positions and might be non-functional in several species. Most dispersed repeats, SSRs, and overall variation were detected in the non-coding sequences of the LSC and SSC regions. Fifteen loci, most of which have not been used before in the genus, were identified as the most variable and potentially useful as molecular markers for barcoding and genetic studies. Both ML and Bayesian analyses produced similar results irrespective of the partitioning strategy used. The plastome-based tree largely supported the topology inferred in previous studies using cp markers while providing resolution to the backbone relationships but was highly incongruous with a recently published nuclear tree presenting an opportunity for further research to investigate the causes of discordance, and particularly the role of hybridization in the diversification of the genus. Plastome sequences are valuable tools to resolve deep-level relationships within Acer. The variable loci and SSRs identified in this study will facilitate the development of markers for ecological and evolutionary studies in the genus. This study underscores the potential of plastid genome sequences to improve our understanding of the evolution of maples.

show abstract

Section: Phylogenomic Reconstructionsupporting

confidence: 93%

Plastome comparative genomics in maples resolves the infrageneric backbone relationships

Areces-Berazain

Wang

Hinsinger

et al. 2020

PeerJ

View full text Add to dashboard Cite

show abstract

“…Paleontological scholarship over the last 50 years and more recent phylogenetic reconstructions have provided a rough outline of the maple genus's origins and evolution. Boulter and colleagues [8] synthesized then-available fossil evidence and conclude that the maples diverged from their close relatives in Sapindaceae (e.g., Dipteronia and Aesculus) during the warm, wet early Eocene epoch (~60 mya) in the high latitudes of the Pacific Rim. They note, though, that ambiguities in the fossil record did not allow them to determine whether the genus originated in (what is now) East Asia or North America.…”

Section: Introductionmentioning

confidence: 99%

“…Regardless, by the advent of the Oligocene (34 mya), a period of climatic drying and cooling, the maple genus had diversified considerably and radiated across the Northern hemisphere. Fossilized maple organs have been found in abundance in East Asia [9], North America [10], and Europe ( [11], reviewed in [8,12]). Strikingly, fossils from some regions indicate considerable loss of maple diversity over the last~30 million years of climatic cooling and drying; Wolfe and Tanai [10], for instance, document fossils of 91 maple species in 28 sections in western North America alone, compared to the five species (from five sections) extant in this region today.…”

Section: Introductionmentioning

confidence: 99%

Evidence of Constrained Divergence and Conservatism in Climatic Niches of the Temperate Maples (Acer L.)

Grossman

2021

Forests

View full text Add to dashboard Cite

Research highlights: The availability of global distribution data and new, fossil-calibrated phylogenies has made it possible to compare the climatic niches of the temperate maple (Acer L.) taxa and assess phylogenetic and continental patterns in niche overlap. Background and Objectives: The maples have radiated from East Asia into two other temperate continental bioregions, North America and Eurasia (Europe and West Asia), over a roughly 60-million-year period. During this time, the Earth’s climate experienced pronounced cooling and drying, culminating in cyclic periods of widespread temperate glaciation in the Pliocene to Pleistocene. The objective of this study is to use newly available data to model the climatic niches of 60% of the temperate maples and assess patterns of niche divergence, constraint, and conservatism in the genus’s radiation out of East Asia. Materials and Methods: I assembled global occurrence data and associated climatic information for 71 maple taxa, including all species endemic to temperate North America and Eurasia and their closely related East Asian congeners. I constructed Maxent niche models for all taxa and compared the climatic niches of 184 taxa pairs and assessed phylogenetic signal in key niche axes for each taxon and in niche overlap at the continental and global scale. Results: Maxent models define a fundamental climatic niche for temperate maples and suggest that drought-intolerant taxa have been lost from the Eurasian maple flora, with little continental difference in temperature optima or breadth. Niche axes and niche overlap show minimal evidence of phylogenetic signal, suggesting adaptive evolution. Pairwise niche comparisons reveal infrequent niche overlap continentally and globally, even among sister pairs, with few taxa pairs sharing ecological niche space, providing evidence for constrained divergence within the genus’s fundamental climatic niche. Evidence of niche conservatism is limited to three somewhat geographically isolated regions of high maple diversity (western North America, the Caucasus, and Japan). Conclusions: Over 60 million years of hemispheric radiation on a cooling and drying planet, the maple genus experienced divergent, though constrained, climatic niche evolution. High climatic niche diversity across spatial and phylogenetic scales along with very limited niche overlap or conservatism suggests that the radiation of the genus has largely been one of adaptive diversification.

show abstract

Phylogeny, origin, and biogeographic history of Aesculus L. (Sapindales) – an update from combined analysis of DNA sequences, morphology, and fossils

Harris

Xiang

Thomas

2009

TAXON

View full text Add to dashboard Cite

Conflicting phylogenies and biogeographic hypotheses for Aesculus L. were reevaluated using data integrating morphology, fossils, and DNA sequences. A more robust phylogeny of Aesculus was constructed by increasing taxon and character sampling to include 42 morphological characters and five DNA regions including rps16, trnHK, matK, ITS, and part of the LEAFY gene. Our analyses revealed three well‐supported major lineages in Aesculus. These are sect. Calothyrsus excluding A. californica, sect. Macrothyrsus + A. californica, and sect. Aesculus + sect. Pavia + sect. Parryana. The relationship of sect. Aesculus to sect. Parryana + sect. Pavia is strongly supported and previously unreported. Relationships among the three major clades remained incompletely resolved. Biogeographic and divergence time analyses using DIVA and Multidivtime support a Paleocene origin of Aesculus in eastern Asia and western North America, and showed that the genus subsequently dispersed into eastern North America, Central America, and Europe. Our results support that Aesculus originated as an element of the Paleogene mesophilic flora in the Beringian region with multiple eastward migrations characterizing the early spatial history of this genus. This biogeographic history supports Trans‐Beringian migration of plants in the very early Paleogene.

show abstract

The evolution and global migration of the Aceraceae

Cited by 15 publications

References 6 publications

Plastome comparative genomics in maples resolves the infrageneric backbone relationships

Plastome comparative genomics in maples resolves the infrageneric backbone relationships

Evidence of Constrained Divergence and Conservatism in Climatic Niches of the Temperate Maples (Acer L.)

Phylogeny, origin, and biogeographic history of Aesculus L. (Sapindales) – an update from combined analysis of DNA sequences, morphology, and fossils

Contact Info

Product

Resources

About