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Zhang Z, Liu G, Li M. Incomplete lineage sorting and gene flow within Allium (Amayllidaceae). Mol Phylogenet Evol 2024; 195:108054. [PMID: 38471599 DOI: 10.1016/j.ympev.2024.108054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/01/2024] [Accepted: 03/07/2024] [Indexed: 03/14/2024]
Abstract
The phylogeny and systematics of the genus Allium have been studied with a variety of diverse data types, including an increasing amount of molecular data. However, strong phylogenetic discordance and high levels of uncertainty have prevented the identification of a consistent phylogeny. The difficulty in establishing phylogenetic consensus and evidence for genealogical discordance make Allium a compelling test case to assess the relative contribution of incomplete lineage sorting (ILS), gene flow and gene tree estimation error on phylogenetic reconstruction. In this study, we obtained 75 transcriptomes of 38 Allium species across 10 subgenera. Whole plastid genome, single copy genes and consensus CDS were generated to estimate phylogenetic trees both using coalescence and concatenation methods. Multiple approaches including coalescence simulation, quartet sampling, reticulate network inference, sequence simulation, theta of ILS and reticulation index were carried out across the CDS gene trees to investigate the degrees of ILS, gene flow and gene tree estimation error. Afterward, a regression analysis was used to test the relative contributions of each of these forms of uncertainty to the final phylogeny. Despite extensive topological discordance among gene trees, we found a fully supported species tree that agrees with the most of well-accepted relationships and establishes monophyly of the genus Allium. We presented clear evidence for substantial ILS across the phylogeny of Allium. Further, we identified two ancient hybridization events for the formation of the second evolutionary line and subg. Butomissa as well as several introgression events between recently diverged species. Our regression analysis revealed that gene tree inference error and gene flow were the two most dominant factors explaining for the overall gene tree variation, with the difficulty in disentangling the effects of ILS and gene tree estimation error due to a positive correlation between them. Based on our efforts to mitigate the methodological errors in reconstructing trees, we believed ILS and gene flow are two principal reasons for the oft-reported phylogenetic heterogeneity of Allium. This study presents a strongly-supported and well-resolved phylogenetic backbone for the sampled Allium species, and exemplifies how to untangle heterogeneity in phylogenetic signal and reconstruct the true evolutionary history of the target taxa.
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Affiliation(s)
- ZengZhu Zhang
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Gang Liu
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Minjie Li
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, People's Republic of China.
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Naranjo AA, Edwards CE, Gitzendanner MA, Soltis DE, Soltis PS. Abundant incongruence in a clade endemic to a biodiversity hotspot: Phylogenetics of the scrub mint clade (Lamiaceae). Mol Phylogenet Evol 2024; 192:108014. [PMID: 38199595 DOI: 10.1016/j.ympev.2024.108014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 12/26/2023] [Accepted: 01/06/2024] [Indexed: 01/12/2024]
Abstract
The Scrub Mint clade(Lamiaceae) provides a unique system for investigating the evolutionary processes driving diversification in the North American Coastal Plain from both a systematic and biogeographic context. The clade comprisesDicerandra, Conradina, Piloblephis, Stachydeoma, and four species of the broadly defined genus Clinopodium(Mentheae; Lamiaceae), almost all of which are endemic to the North American Eastern Coastal Plain. Most species of this clade are threatened or endangered and restricted to sandhill or a mosaic of scrub habitats. We analyzed relationships in this clade to understand the evolution of the group and identify evolutionary mechanisms acting on the clade, with important implications for conservation. We used a target-capture method to sequence and analyze 238 nuclear loci across all species of scrub mints, reconstructed the phylogeny, and calculated gene tree concordance, gene tree estimation error, and reticulation indices for every node in the tree using ML methods. Phylogenetic networks were used to determine reticulation events. Our nuclear phylogenetic estimates were consistent with previous results, while greatly increasing the robustness of taxon sampling. The phylogeny resolved the full relationship between Dicerandra and Conradina and the less-studied members of the clade (Piloblephis, Stachydeoma, Clinopodium spp.). We found hotspots of gene tree discordance and reticulation throughout the tree, especially in perennial Dicerandra. Several instances of reticulation events were uncovered between annual and perennial Dicerandra, and within the Conradina + allies clade. Incomplete lineage sorting also likely contributed to phylogenetic discordance. These results clarify phylogenetic relationships in the clade and provide insight on important evolutionary drivers in the clade, such as hybridization. General relationships in the group were confirmed, while the large amount of gene tree discordance is likely due to reticulation across the phylogeny.
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Affiliation(s)
- Andre A Naranjo
- Institute of Environment, Department of Biological Sciences, Florida International University, 11200 SW 8th ST, Miami, FL 33199, USA; Florida Museum of Natural History, University of Florida, 1659 Museum Road, PO Box 117800, Gainesville, FL 32611-7800, USA.
| | | | - Matthew A Gitzendanner
- Department of Biology, University of Florida, PO Box 118526, Gainesville, FL 32611-8526, USA
| | - Douglas E Soltis
- Florida Museum of Natural History, University of Florida, 1659 Museum Road, PO Box 117800, Gainesville, FL 32611-7800, USA; Department of Biology, University of Florida, PO Box 118526, Gainesville, FL 32611-8526, USA
| | - Pamela S Soltis
- Florida Museum of Natural History, University of Florida, 1659 Museum Road, PO Box 117800, Gainesville, FL 32611-7800, USA
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Song H, Wang Y, Shao H, Li Z, Hu P, Yap-Chiongco MK, Shi P, Zhang T, Li C, Wang Y, Ma P, Vinther J, Wang H, Kocot KM. Scaphopoda is the sister taxon to Bivalvia: Evidence of ancient incomplete lineage sorting. Proc Natl Acad Sci U S A 2023; 120:e2302361120. [PMID: 37738291 PMCID: PMC10556646 DOI: 10.1073/pnas.2302361120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 08/18/2023] [Indexed: 09/24/2023] Open
Abstract
The almost simultaneous emergence of major animal phyla during the early Cambrian shaped modern animal biodiversity. Reconstructing evolutionary relationships among such closely spaced branches in the animal tree of life has proven to be a major challenge, hindering understanding of early animal evolution and the fossil record. This is particularly true in the species-rich and highly varied Mollusca where dramatic inconsistency among paleontological, morphological, and molecular evidence has led to a long-standing debate about the group's phylogeny and the nature of dozens of enigmatic fossil taxa. A critical step needed to overcome this issue is to supplement available genomic data, which is plentiful for well-studied lineages, with genomes from rare but key lineages, such as Scaphopoda. Here, by presenting chromosome-level genomes from both extant scaphopod orders and leveraging complete genomes spanning Mollusca, we provide strong support for Scaphopoda as the sister taxon of Bivalvia, revitalizing the morphology-based Diasoma hypothesis originally proposed 50 years ago. Our molecular clock analysis confidently dates the split between Bivalvia and Scaphopoda at ~520 Ma, prompting a reinterpretation of controversial laterally compressed Early Cambrian fossils, including Anabarella, Watsonella, and Mellopegma, as stem diasomes. Moreover, we show that incongruence in the phylogenetic placement of Scaphopoda in previous phylogenomic studies was due to ancient incomplete lineage sorting (ILS) that occurred during the rapid radiation of Conchifera. Our findings highlight the need to consider ILS as a potential source of error in deep phylogeny reconstruction, especially in the context of the unique nature of the Cambrian Explosion.
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Affiliation(s)
- Hao Song
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao266071, China
- Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao266237, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Yunan Wang
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao266071, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Haojing Shao
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen518000, China
| | - Zhuoqing Li
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao266071, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Pinli Hu
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen518000, China
| | | | - Pu Shi
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao266071, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Tao Zhang
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao266071, China
- Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao266237, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Cui Li
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao266071, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Yiguan Wang
- Institute of Ecology and Evolution, University of Edinburgh, EdinburghEH9 3FL, United Kingdom
| | - Peizhen Ma
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao266071, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Jakob Vinther
- School of Biological Sciences, University of Bristol, BristolBS8 1TQ, United Kingdom
- School of Earth Sciences, University of Bristol, BristolBS8 1TQ, United Kingdom
| | - Haiyan Wang
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao266071, China
- Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao266237, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Kevin M. Kocot
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL35487
- Alabama Museum of Natural History, University of Alabama, Tuscaloosa, AL35487
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Dai M, He SL, Chen B, Li TJ. Phylogeny of Rhynchium and Its Related Genera (Hymenoptera: Eumeninae) Based on Universal Single-Copy Orthologs and Ultraconserved Elements. INSECTS 2023; 14:775. [PMID: 37754743 PMCID: PMC10532281 DOI: 10.3390/insects14090775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 09/15/2023] [Accepted: 09/18/2023] [Indexed: 09/28/2023]
Abstract
The subfamily Eumeninae is a large group of fierce predatory insects that prey mainly on the larvae of Lepidoptera pests. Because of the highly similar morphologies of the genus Rhynchium and its related genera in the subfamily, including Rhynchium Spinola, Allorhynchium van der Vecht, Anterhynchium de Saussure, Pararrhynchium de Saussure, it is essential to delineate their relationships. A previous phylogenetic analysis based on mitochondrial genomes suggested the inconsistent relationships of these genera under traditional classification based on morphological characters. In this study, we first used single-copy orthologs [USCO] and ultraconserved elements [UCE] extracted from 10 newly sequenced low-coverage whole genomes to resolve the phylogenetic relationships of the above genera. The newly sequenced genomes are 152.99 Mb to 211.49 Mb in size with high completeness (BUSCO complete: 91.5-95.6%) and G + C content (36.31-38.76%). Based on extracted 5811 USCOs and 2312 UCEs, the phylogenetic relationships of Rhynchium and its related genera were: ((Allorhynchium + Lissodynerus) + (Pararrhynchium + (Anterhynchium + (Dirhynchium + Rhynchium)))), which was consistent with the mitochondrial genome results. The results supported the genus Rhynchium as monophyletic, whereas Anterhynchium was recovered as paraphyletic, with Anterhynchium (Dirhynchium) as a sister to Rhynchium and hence deserving generic status; In addition, in the genus Pararrhynchium, P. septemfasciatus feanus and P. venkataramani were separated, not clustered on a branch, just as P. septemfasciatus feanus was not together with P. striatum based on mitochondrial genomes. Since Lissodynerus septemfasciatus, the type species of the genus Lissodynerus, was transferred to Pararrhynchium, it is considered that the genus Lissodynerus should be restituted as a valid genus, not a synonym of Pararrhynchium.
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Affiliation(s)
| | | | | | - Ting-Jing Li
- Chongqing Key Laboratory of Vector Insects, Institute of Entomology and Molecular Biology, College of Life Science, Chongqing Normal University, Chongqing 401331, China; (M.D.); (S.-L.H.); (B.C.)
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H Tomasco I, Giorello FM, Boullosa N, Feijoo M, Lanzone C, Lessa EP. The contribution of incomplete lineage sorting and introgression to the evolutionary history of the fast-evolving genus Ctenomys (Rodentia, Ctenomyidae). Mol Phylogenet Evol 2022; 176:107593. [PMID: 35905819 DOI: 10.1016/j.ympev.2022.107593] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 06/28/2022] [Accepted: 07/21/2022] [Indexed: 10/31/2022]
Abstract
Incomplete lineage sorting and introgression have been increasingly recognized as important processes involved in biological differentiation. Both incomplete lineage sorting and introgression result in incongruences between gene trees and species trees, consequently causing difficulties in phylogenetic reconstruction. This is particularly the case for rapid radiations, as short internodal distances and incomplete reproductive isolation increase the likelihood of both ILS and introgression. Estimation of the relative frequency of these processes requires assessments across many genomic regions. We use transcriptomics to test for introgression and estimate the frequency of incomplete lineage sorting in a set of three closely related and geographically adjacent South American tuco-tucos species (Ctenomys), a genus comprising 64 species resulting from recent, rapid radiation. After cleaning and filtering, 5764 orthologous genes strongly support paraphyly of C. pearsoni relative to C. brasiliensis (putatively represented by the population of Villa Serrana). In line with earlier phylogenetic work, the C. pearsoni - C. brasiliensis pair is closely related to C. torquatus, whereas C. rionegrensis is more distantly related to these three nominal species. Classical Patterson's D-statistic shows significant signals of introgression from C. torquatus into C. brasiliensis. However, a 5-taxon test shows no significant results. Incomplete lineage sorting was estimated to have involved about 9% of the loci, suggesting it represents an important process in the incipient diversification of tuco-tucos.
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Affiliation(s)
- Ivanna H Tomasco
- Departamento de Ecología y Evolución, Facultad de Ciencias, Universidad de la República. Iguá 4225. Montevideo, 11400. Uruguay.
| | - Facundo M Giorello
- Facundo M. Giorello. PDU Espacio de Biología Vegetal del Noreste, Centro Universitario de Tacuarembó (CUT), Universidad de la República, Ruta 5 km 386,200, 45000, Tacuarembó, Uruguay
| | - Nicolás Boullosa
- Departamento de Ecología y Evolución, Facultad de Ciencias, Universidad de la República. Iguá 4225. Montevideo, 11400. Uruguay
| | - Matías Feijoo
- Matías Feijoo. Departamento de Sistemas Agrarios y Paisajes Culturales, Centro Universitario Regional Este (CURE). Universidad de la República. Ruta 8 Km 281, Treinta y Tres, Uruguay
| | - Cecilia Lanzone
- Cecilia Lanzone. Laboratorio de Genética Evolutiva, IBS (CONICET-UNaM), FCEQyN, Félix de Azara 1553, Posadas,3300. Misiones, Argentina
| | - Enrique P Lessa
- Departamento de Ecología y Evolución, Facultad de Ciencias, Universidad de la República. Iguá 4225. Montevideo, 11400. Uruguay
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Hatami E, Jones KE, Kilian N. New Insights Into the Relationships Within Subtribe Scorzonerinae (Cichorieae, Asteraceae) Using Hybrid Capture Phylogenomics (Hyb-Seq). FRONTIERS IN PLANT SCIENCE 2022; 13:851716. [PMID: 35873957 PMCID: PMC9298463 DOI: 10.3389/fpls.2022.851716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
Subtribe Scorzonerinae (Cichorieae, Asteraceae) contains 12 main lineages and approximately 300 species. Relationships within the subtribe, either at inter- or intrageneric levels, were largely unresolved in phylogenetic studies to date, due to the lack of phylogenetic signal provided by traditional Sanger sequencing markers. In this study, we employed a phylogenomics approach (Hyb-Seq) that targets 1,061 nuclear-conserved ortholog loci designed for Asteraceae and obtained chloroplast coding regions as a by-product of off-target reads. Our objectives were to evaluate the potential of the Hyb-Seq approach in resolving the phylogenetic relationships across the subtribe at deep and shallow nodes, investigate the relationships of major lineages at inter- and intrageneric levels, and examine the impact of the different datasets and approaches on the robustness of phylogenetic inferences. We analyzed three nuclear datasets: exon only, excluding all potentially paralogous loci; exon only, including loci that were only potentially paralogous in 1-3 samples; exon plus intron regions (supercontigs); and the plastome CDS region. Phylogenetic relationships were reconstructed using both multispecies coalescent and concatenation (Maximum Likelihood and Bayesian analyses) approaches. Overall, our phylogenetic reconstructions recovered the same monophyletic major lineages found in previous studies and were successful in fully resolving the backbone phylogeny of the subtribe, while the internal resolution of the lineages was comparatively poor. The backbone topologies were largely congruent among all inferences, but some incongruent relationships were recovered between nuclear and plastome datasets, which are discussed and assumed to represent cases of cytonuclear discordance. Considering the newly resolved phylogenies, a new infrageneric classification of Scorzonera in its revised circumscription is proposed.
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Affiliation(s)
- Elham Hatami
- Department of Biology, Faculty of Science, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Katy E. Jones
- Botanic Garden and Botanical Museum Berlin, Freie Universität Berlin, Berlin, Germany
| | - Norbert Kilian
- Botanic Garden and Botanical Museum Berlin, Freie Universität Berlin, Berlin, Germany
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Murillo-A J, Valencia-D J, Orozco CI, Parra-O C, Neubig KM. Incomplete lineage sorting and reticulate evolution mask species relationships in Brunelliaceae, an Andean family with rapid, recent diversification. AMERICAN JOURNAL OF BOTANY 2022; 109:1139-1156. [PMID: 35709353 DOI: 10.1002/ajb2.16025] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 05/25/2022] [Accepted: 05/26/2022] [Indexed: 06/15/2023]
Abstract
PREMISE To date, phylogenetic relationships within the monogeneric Brunelliaceae have been based on morphological evidence, which does not provide sufficient phylogenetic resolution. Here we use target-enriched nuclear data to improve our understanding of phylogenetic relationships in the family. METHODS We used the Angiosperms353 toolkit for targeted recovery of exonic regions and supercontigs (exons + introns) from low copy nuclear genes from 53 of 70 species in Brunellia, and several outgroup taxa. We removed loci that indicated biased inference of relationships and applied concatenated and coalescent methods to infer Brunellia phylogeny. We identified conflicts among gene trees that may reflect hybridization or incomplete lineage sorting events and assessed their impact on phylogenetic inference. Finally, we performed ancestral-state reconstructions of morphological traits and assessed the homology of character states used to define sections and subsections in Brunellia. RESULTS Brunellia comprises two major clades and several subclades. Most of these clades/subclades do not correspond to previous infrageneric taxa. There is high topological incongruence among the subclades across analyses. CONCLUSIONS Phylogenetic reconstructions point to rapid species diversification in Brunelliaceae, reflected in very short branches between successive species splits. The removal of putatively biased loci slightly improves phylogenetic support for individual clades. Reticulate evolution due to hybridization and/or incomplete lineage sorting likely both contribute to gene-tree discordance. Morphological characters used to define taxa in current classification schemes are homoplastic in the ancestral character-state reconstructions. While target enrichment data allows us to broaden our understanding of diversification in Brunellia, the relationships among subclades remain incompletely understood.
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Affiliation(s)
- José Murillo-A
- Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Carrera 30 # 45-03, edificio 425, Bogotá, D.C., Colombia
| | - Janice Valencia-D
- School of Biological Sciences, Southern Illinois University Carbondale, 1125 Lincoln Dr., Carbondale, Illinois, 62901-6509, USA
| | - Clara I Orozco
- Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Carrera 30 # 45-03, edificio 425, Bogotá, D.C., Colombia
| | - Carlos Parra-O
- Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Carrera 30 # 45-03, edificio 425, Bogotá, D.C., Colombia
| | - Kurt M Neubig
- School of Biological Sciences, Southern Illinois University Carbondale, 1125 Lincoln Dr., Carbondale, Illinois, 62901-6509, USA
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Chen YP, Turdimatovich TO, Nuraliev MS, Lazarević P, Drew BT, Xiang CL. Phylogeny and biogeography of the northern temperate genus Dracocephalum s.l. (Lamiaceae). Cladistics 2022; 38:429-451. [PMID: 35358338 DOI: 10.1111/cla.12502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/23/2022] [Accepted: 02/26/2022] [Indexed: 11/28/2022] Open
Abstract
The northern temperate genus Dracocephalum consists of approximately 70 species mainly distributed in the steppe-desert biomes of Central and West Asia and the alpine region of the Qinghai-Tibetan Plateau (QTP). Previous work has shown that Dracocephalum is not monophyletic and might include Hyssopus and Lallemantia. This study attempts to clarify the phylogenetic relationships, diversification patterns, and the biogeographical history of the three genera (defined as Dracocephalum s.l.). Based on a sampling of 66 taxa comprising more than 80% from extant species of Dracocephalum s.l., morphological, phylogenetic (maximum parsimony, likelihood, and Bayesian inference based on nuclear ITS and ETS, plastid rpl32-trnL, trnL-trnF, ycf1, and ycf1-rps15, and two low-copy nuclear markers AT3G09060 and AT1G09680), molecular dating, diversification, and ancestral range estimation analyses were carried out. Our results demonstrate that both Hyssopus and Lallemantia are embedded within Dracocephalum and nine well-supported clades can be recognized within Dracocephalum s.l. Analyses of divergence times suggest that the genus experienced an early rapid radiation during the middle to late Miocene with major lineages diversifying within a relatively narrow timescale. Ancestral area reconstruction analyses indicate that Dracocephalum s.l. originated in Central and West Asia and southern Siberia, and dispersed from Central and West Asia into the QTP and adjacent areas twice independently during the Pliocene. The aridification of the Asian interior possibly promoted the rapid radiation of Dracocephalum within this region, and the uplift of the QTP appears to have triggered the dispersal and recent rapid diversification of the genus in the QTP and adjacent regions. Combining molecular phylogenetic and morphological evidence, a revised infrageneric classification of Dracocephalum s.l. is proposed, which recognizes nine sections within the genus.
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Affiliation(s)
- Ya-Ping Chen
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | | | - Maxim S Nuraliev
- Department of Higher Plants, Biological Faculty, M.V. Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Predrag Lazarević
- Institute of Botany and Botanical Garden, Faculty of Biology, University of Belgrade, Belgrade, 11000, Serbia
| | - Bryan T Drew
- Department of Biology, University of Nebraska-Kearney, Kearney, 68849, USA
| | - Chun-Lei Xiang
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
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Xi J, Lv S, Zhang W, Zhang J, Wang K, Guo H, Hu J, Yang Y, Wang J, Xia G, Fan G, Wang X, Xiao L. Comparative plastomes of Carya species provide new insights into the plastomes evolution and maternal phylogeny of the genus. FRONTIERS IN PLANT SCIENCE 2022; 13:990064. [PMID: 36407576 PMCID: PMC9667483 DOI: 10.3389/fpls.2022.990064] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 09/21/2022] [Indexed: 05/03/2023]
Abstract
Carya, in the Juglandiodeae subfamily, is to a typical temperate-subtropical forest-tree genus for studying the phylogenetic evolution and intercontinental disjunction between eastern Asia (EA) and North America (NA). Species of the genus have high economic values worldwide for their high-quality wood and the rich healthy factors of their nuts. Although previous efforts based on multiple molecular markers or genome-wide SNPs supported the monophyly of Carya and its two EA and NA major subclades, the maternal phylogeny of Carya still need to be comprehensively evaluated. The variation of Carya plastome has never been thoroughly characterized. Here, we novelly present 19 newly generated plastomes of congeneric Carya species, including the recently rediscovered critically endangered C. poilanei. The overall assessment of plastomes revealed highly conservative in the general structures. Our results indicated that remarkable differences in several plastome features are highly consistent with the EA-NA disjunction and showed the relatively diverse matrilineal sources among EA Carya compared to NA Carya. The maternal phylogenies were conducted with different plastome regions and full-length plastome datasets from 30 plastomes, representing 26 species in six genera of Juglandoideae and Myrica rubra (as root). Six out of seven phylogenetic topologies strongly supported the previously reported relationships among genera of Juglandoideae and the two subclades of EA and NA Carya, but displayed significant incongruencies between species within the EA and NA subclades. The phylogenetic tree generated from full-length plastomes demonstrated the optimal topology and revealed significant geographical maternal relationships among Carya species, especially for EA Carya within overlapping distribution areas. The full-length plastome-based phylogenetic topology also strongly supported the taxonomic status of five controversial species as separate species of Carya. Historical and recent introgressive hybridization and plastid captures might contribute to plastome geographic patterns and inconsistencies between topologies built from different datasets, while incomplete lineage sorting could account for the discordance between maternal topology and the previous nuclear genome data-based phylogeny. Our findings highlight full-length plastomes as an ideal tool for exploring maternal relationships among the subclades of Carya, and potentially in other outcrossing perennial woody plants, for resolving plastome phylogenetic relationships.
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Affiliation(s)
- Jianwei Xi
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Saibin Lv
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Weiping Zhang
- State Key Laboratory of Earth Surface Processes and Resource Ecology and Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, College of Life Sciences, Beijing Normal University, Beijing, China
| | - Jingbo Zhang
- Department of Biological Sciences, St. John’s University - Queens, NY, United States
- *Correspondence: Lihong Xiao, ; Jingbo Zhang,
| | - Ketao Wang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Haobing Guo
- The Beijing Genomics Institute (BGI) -Qingdao, The Beijing Genomics Institute (BGI)-Shenzhen, Qingdao, China
| | - Jie Hu
- The Beijing Genomics Institute (BGI) -Qingdao, The Beijing Genomics Institute (BGI)-Shenzhen, Qingdao, China
| | - Yang Yang
- State Key Laboratory of Earth Surface Processes and Resource Ecology and Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, College of Life Sciences, Beijing Normal University, Beijing, China
| | - Jianhua Wang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Guohua Xia
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Guangyi Fan
- The Beijing Genomics Institute (BGI) -Qingdao, The Beijing Genomics Institute (BGI)-Shenzhen, Qingdao, China
| | - Xinwang Wang
- Pecan Breeding and Genetics, Southern Plains Agricultural Research Center, USDA-ARS, College Station, TX, United States
| | - Lihong Xiao
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
- *Correspondence: Lihong Xiao, ; Jingbo Zhang,
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10
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Douglas J, Jiménez-Silva CL, Bouckaert R. OUP accepted manuscript. Syst Biol 2022; 71:901-916. [PMID: 35176772 PMCID: PMC9248896 DOI: 10.1093/sysbio/syac010] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 02/01/2022] [Accepted: 02/08/2022] [Indexed: 11/16/2022] Open
Abstract
As genomic sequence data become increasingly available, inferring the phylogeny of the
species as that of concatenated genomic data can be enticing. However, this approach makes
for a biased estimator of branch lengths and substitution rates and an inconsistent
estimator of tree topology. Bayesian multispecies coalescent (MSC) methods address these
issues. This is achieved by constraining a set of gene trees within a species tree and
jointly inferring both under a Bayesian framework. However, this approach comes at the
cost of increased computational demand. Here, we introduce StarBeast3—a software package
for efficient Bayesian inference under the MSC model via Markov chain Monte Carlo. We gain
efficiency by introducing cutting-edge proposal kernels and adaptive operators, and
StarBeast3 is particularly efficient when a relaxed clock model is applied. Furthermore,
gene-tree inference is parallelized, allowing the software to scale with the size of the
problem. We validated our software and benchmarked its performance using three real and
two synthetic data sets. Our results indicate that StarBeast3 is up to one-and-a-half
orders of magnitude faster than StarBeast2, and therefore more than two orders faster than
*BEAST, depending on the data set and on the parameter, and can achieve convergence on
large data sets with hundreds of genes. StarBeast3 is open-source and is easy to set up
with a friendly graphical user interface. [Adaptive; Bayesian inference; BEAST 2;
effective population sizes; high performance; multispecies coalescent; parallelization;
phylogenetics.]
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Affiliation(s)
- Jordan Douglas
- School of Computer Science, University of Auckland, 9 Symonds
Street Level 1 Student Commons, Auckland 1010, New Zealand
- Correspondence to be sent to: School of Computer Science,
University of Auckland, 9 Symonds Street Level 1 Student Commons, Auckland 1010, New
Zealand; E-mail:
| | - Cinthy L Jiménez-Silva
- School of Computer Science, University of Auckland, 9 Symonds
Street Level 1 Student Commons, Auckland 1010, New Zealand
| | - Remco Bouckaert
- School of Computer Science, University of Auckland, 9 Symonds
Street Level 1 Student Commons, Auckland 1010, New Zealand
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11
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Rose JP, Kriebel R, Kahan L, DiNicola A, González-Gallegos JG, Celep F, Lemmon EM, Lemmon AR, Sytsma KJ, Drew BT. Sage Insights Into the Phylogeny of Salvia: Dealing With Sources of Discordance Within and Across Genomes. FRONTIERS IN PLANT SCIENCE 2021; 12:767478. [PMID: 34899789 PMCID: PMC8652245 DOI: 10.3389/fpls.2021.767478] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 10/22/2021] [Indexed: 05/13/2023]
Abstract
Next-generation sequencing technologies have facilitated new phylogenomic approaches to help clarify previously intractable relationships while simultaneously highlighting the pervasive nature of incongruence within and among genomes that can complicate definitive taxonomic conclusions. Salvia L., with ∼1,000 species, makes up nearly 15% of the species diversity in the mint family and has attracted great interest from biologists across subdisciplines. Despite the great progress that has been achieved in discerning the placement of Salvia within Lamiaceae and in clarifying its infrageneric relationships through plastid, nuclear ribosomal, and nuclear single-copy genes, the incomplete resolution has left open major questions regarding the phylogenetic relationships among and within the subgenera, as well as to what extent the infrageneric relationships differ across genomes. We expanded a previously published anchored hybrid enrichment dataset of 35 exemplars of Salvia to 179 terminals. We also reconstructed nearly complete plastomes for these samples from off-target reads. We used these data to examine the concordance and discordance among the nuclear loci and between the nuclear and plastid genomes in detail, elucidating both broad-scale and species-level relationships within Salvia. We found that despite the widespread gene tree discordance, nuclear phylogenies reconstructed using concatenated, coalescent, and network-based approaches recover a common backbone topology. Moreover, all subgenera, except for Audibertia, are strongly supported as monophyletic in all analyses. The plastome genealogy is largely resolved and is congruent with the nuclear backbone. However, multiple analyses suggest that incomplete lineage sorting does not fully explain the gene tree discordance. Instead, horizontal gene flow has been important in both the deep and more recent history of Salvia. Our results provide a robust species tree of Salvia across phylogenetic scales and genomes. Future comparative analyses in the genus will need to account for the impacts of hybridization/introgression and incomplete lineage sorting in topology and divergence time estimation.
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Affiliation(s)
- Jeffrey P. Rose
- Department of Biology, University of Nebraska at Kearney, Kearney, NE, United States
- Department of Botany, University of Wisconsin–Madison, Madison, WI, United States
| | - Ricardo Kriebel
- Department of Botany, University of Wisconsin–Madison, Madison, WI, United States
| | - Larissa Kahan
- Department of Botany, University of Wisconsin–Madison, Madison, WI, United States
| | - Alexa DiNicola
- Department of Botany, University of Wisconsin–Madison, Madison, WI, United States
| | | | - Ferhat Celep
- Department of Biology, Faculty of Arts and Sciences, Kırıkkale University, Yahşihan, Turkey
| | - Emily M. Lemmon
- Department of Biological Science, Florida State University, Tallahassee, FL, United States
| | - Alan R. Lemmon
- Department of Scientific Computing, Florida State University, Tallahassee, FL, United States
| | - Kenneth J. Sytsma
- Department of Botany, University of Wisconsin–Madison, Madison, WI, United States
| | - Bryan T. Drew
- Department of Biology, University of Nebraska at Kearney, Kearney, NE, United States
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12
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Nesi N, Tsagkogeorga G, Tsang SM, Nicolas V, Lalis A, Scanlon AT, Riesle-Sbarbaro SA, Wiantoro S, Hitch AT, Juste J, Pinzari CA, Bonaccorso FJ, Todd CM, Lim BK, Simmons NB, McGowen MR, Rossiter SJ. Interrogating Phylogenetic Discordance Resolves Deep Splits in the Rapid Radiation of Old World Fruit Bats (Chiroptera: Pteropodidae). Syst Biol 2021; 70:1077-1089. [PMID: 33693838 PMCID: PMC8513763 DOI: 10.1093/sysbio/syab013] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 04/27/2021] [Accepted: 03/03/2021] [Indexed: 11/14/2022] Open
Abstract
The family Pteropodidae (Old World fruit bats) comprises $>$200 species distributed across the Old World tropics and subtropics. Most pteropodids feed on fruit, suggesting an early origin of frugivory, although several lineages have shifted to nectar-based diets. Pteropodids are of exceptional conservation concern with $>$50% of species considered threatened, yet the systematics of this group has long been debated, with uncertainty surrounding early splits attributed to an ancient rapid diversification. Resolving the relationships among the main pteropodid lineages is essential if we are to fully understand their evolutionary distinctiveness, and the extent to which these bats have transitioned to nectar-feeding. Here we generated orthologous sequences for $>$1400 nuclear protein-coding genes (2.8 million base pairs) across 114 species from 43 genera of Old World fruit bats (57% and 96% of extant species- and genus-level diversity, respectively), and combined phylogenomic inference with filtering by information content to resolve systematic relationships among the major lineages. Concatenation and coalescent-based methods recovered three distinct backbone topologies that were not able to be reconciled by filtering via phylogenetic information content. Concordance analysis and gene genealogy interrogation show that one topology is consistently the best supported, and that observed phylogenetic conflicts arise from both gene tree error and deep incomplete lineage sorting. In addition to resolving long-standing inconsistencies in the reported relationships among major lineages, we show that Old World fruit bats have likely undergone at least seven independent dietary transitions from frugivory to nectarivory. Finally, we use this phylogeny to identify and describe one new genus. [Chiroptera; coalescence; concordance; incomplete lineage sorting; nectar feeder; species tree; target enrichment.].
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Affiliation(s)
- Nicolas Nesi
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Georgia Tsagkogeorga
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Susan M Tsang
- Department of Mammalogy, Division of Vertebrate Zoology, American Museum of Natural History, New York, USA
- Zoology Section, National Museum of Natural History, Manila, Philippines
| | - Violaine Nicolas
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France
| | - Aude Lalis
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France
| | - Annette T Scanlon
- School of Natural and Built Environments, University of South Australia, Mawson Lakes, SA, Australia
| | - Silke A Riesle-Sbarbaro
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
- Institute of Zoology, Zoological Society of London, London, UK
- Centre for Biological Threats and Special Pathogens, Robert Koch Institute, Berlin, Germany
| | - Sigit Wiantoro
- Museum Zoologicum Bogoriense, Research Center for Biology, Indonesian Institute of Sciences, Cibinong, Indonesia
| | - Alan T Hitch
- Department of Wildlife, Fish, and Conservation Biology, University of California Davis, CA, USA
| | - Javier Juste
- Estación Biológica de Doñana (CSIC), Avda. Américo Vespucio, Sevilla, Spain
| | | | | | - Christopher M Todd
- The Hawkesbury institute for the Environment, Western Sydney University, Australia
| | - Burton K Lim
- Royal Ontario Museum, Toronto, ON M5S 2C6, Canada
| | - Nancy B Simmons
- Department of Mammalogy, Division of Vertebrate Zoology, American Museum of Natural History, New York, USA
| | - Michael R McGowen
- Department of Vertebrate Zoology, Smithsonian National Museum of Natural History, Washington, DC, USA
| | - Stephen J Rossiter
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK
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13
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Stull GW, Qu XJ, Parins-Fukuchi C, Yang YY, Yang JB, Yang ZY, Hu Y, Ma H, Soltis PS, Soltis DE, Li DZ, Smith SA, Yi TS. Gene duplications and phylogenomic conflict underlie major pulses of phenotypic evolution in gymnosperms. NATURE PLANTS 2021; 7:1015-1025. [PMID: 34282286 DOI: 10.1038/s41477-021-00964-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 06/10/2021] [Indexed: 05/15/2023]
Abstract
Inferring the intrinsic and extrinsic drivers of species diversification and phenotypic disparity across the tree of life is a major challenge in evolutionary biology. In green plants, polyploidy (or whole-genome duplication, WGD) is known to play a major role in microevolution and speciation, but the extent to which WGD has shaped macroevolutionary patterns of diversification and phenotypic innovation across plant phylogeny remains an open question. Here, we examine the relationship of various facets of genomic evolution-including gene and genome duplication, genome size, and chromosome number-with macroevolutionary patterns of phenotypic innovation, species diversification, and climatic occupancy in gymnosperms. We show that genomic changes, such as WGD and genome-size shifts, underlie the origins of most major extant gymnosperm clades, and notably, our results support an ancestral WGD in the gymnosperm lineage. Spikes of gene duplication typically coincide with major spikes of phenotypic innovation, while increased rates of phenotypic evolution are typically found at nodes with high gene-tree conflict, representing historic population-level dynamics during speciation. Most shifts in gymnosperm diversification since the rise of angiosperms are decoupled from putative WGDs and instead are associated with increased rates of climatic occupancy evolution, particularly in cooler and/or more arid climatic conditions, suggesting that ecological opportunity, especially in the later Cenozoic, and environmental heterogeneity have driven a resurgence of gymnosperm diversification. Our study provides critical insight on the processes underlying diversification and phenotypic evolution in gymnosperms, with important broader implications for the major drivers of both micro- and macroevolution in plants.
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Affiliation(s)
- Gregory W Stull
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Xiao-Jian Qu
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Sciences, Shandong Normal University, Jinan, China
| | | | - Ying-Ying Yang
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Jun-Bo Yang
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Zhi-Yun Yang
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Yi Hu
- Department of Biology, Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, USA
| | - Hong Ma
- Department of Biology, Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, USA
| | - Pamela S Soltis
- Florida Museum of Natural History, University of Florida, Gainesville, FL, USA
| | - Douglas E Soltis
- Florida Museum of Natural History, University of Florida, Gainesville, FL, USA
- Department of Biology, University of Florida, Gainesville, FL, USA
| | - De-Zhu Li
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China.
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China.
| | - Stephen A Smith
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, USA.
| | - Ting-Shuang Yi
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China.
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China.
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14
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Hime PM, Lemmon AR, Lemmon ECM, Prendini E, Brown JM, Thomson RC, Kratovil JD, Noonan BP, Pyron RA, Peloso PLV, Kortyna ML, Keogh JS, Donnellan SC, Mueller RL, Raxworthy CJ, Kunte K, Ron SR, Das S, Gaitonde N, Green DM, Labisko J, Che J, Weisrock DW. Phylogenomics Reveals Ancient Gene Tree Discordance in the Amphibian Tree of Life. Syst Biol 2021; 70:49-66. [PMID: 32359157 PMCID: PMC7823230 DOI: 10.1093/sysbio/syaa034] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 04/14/2020] [Accepted: 04/14/2020] [Indexed: 11/30/2022] Open
Abstract
Molecular phylogenies have yielded strong support for many parts of the amphibian Tree of Life, but poor support for the resolution of deeper nodes, including relationships among families and orders. To clarify these relationships, we provide a phylogenomic perspective on amphibian relationships by developing a taxon-specific Anchored Hybrid Enrichment protocol targeting hundreds of conserved exons which are effective across the class. After obtaining data from 220 loci for 286 species (representing 94% of the families and 44% of the genera), we estimate a phylogeny for extant amphibians and identify gene tree-species tree conflict across the deepest branches of the amphibian phylogeny. We perform locus-by-locus genealogical interrogation of alternative topological hypotheses for amphibian monophyly, focusing on interordinal relationships. We find that phylogenetic signal deep in the amphibian phylogeny varies greatly across loci in a manner that is consistent with incomplete lineage sorting in the ancestral lineage of extant amphibians. Our results overwhelmingly support amphibian monophyly and a sister relationship between frogs and salamanders, consistent with the Batrachia hypothesis. Species tree analyses converge on a small set of topological hypotheses for the relationships among extant amphibian families. These results clarify several contentious portions of the amphibian Tree of Life, which in conjunction with a set of vetted fossil calibrations, support a surprisingly younger timescale for crown and ordinal amphibian diversification than previously reported. More broadly, our study provides insight into the sources, magnitudes, and heterogeneity of support across loci in phylogenomic data sets.[AIC; Amphibia; Batrachia; Phylogeny; gene tree-species tree discordance; genomics; information theory.].
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Affiliation(s)
- Paul M Hime
- Biodiversity Institute, University of Kansas, Lawrence, KS 66045, USA
- Department of Biology, University of Kentucky, Lexington, KY 40506, USA
| | - Alan R Lemmon
- Department of Scientific Computing, Florida State University, Tallahassee, FL 32306, USA
| | | | - Elizabeth Prendini
- Division of Vertebrate Zoology: Herpetology, American Museum of Natural History, New York, NY 10024, USA
| | - Jeremy M Brown
- Department of Biological Sciences and Museum of Natural Science, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Robert C Thomson
- School of Life Sciences, University of Hawai’i, Honolulu, HI 96822, USA
| | - Justin D Kratovil
- Department of Biology, University of Kentucky, Lexington, KY 40506, USA
- Department of Entomology, University of Kentucky, Lexington, KY 40546, USA
| | - Brice P Noonan
- Department of Biology, University of Mississippi, Oxford, MS 38677, USA
| | - R Alexander Pyron
- Department of Biological Sciences, The George Washington University, Washington, DC 20052, USA
| | - Pedro L V Peloso
- Division of Vertebrate Zoology: Herpetology, American Museum of Natural History, New York, NY 10024, USA
- Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, 66075-750, Brazil
| | - Michelle L Kortyna
- Department of Biological Science, Florida State University, Tallahassee, FL 32306, USA
| | - J Scott Keogh
- Division of Ecology and Evolution, Research School of Biology, The Australian National University, Canberra, 2601, Australia
| | - Stephen C Donnellan
- South Australian Museum, North Terrace, Adelaide 5000, Australia
- School of Biological Sciences, University of Adelaide, Adelaide 5005, Australia
| | | | - Christopher J Raxworthy
- Division of Vertebrate Zoology: Herpetology, American Museum of Natural History, New York, NY 10024, USA
| | - Krushnamegh Kunte
- National Centre for Biological Sciences, Tata Institute of Fundamental Research, Bengaluru 560065, India
| | - Santiago R Ron
- Museo de Zoología, Escuela de Biología, Pontificia Universidad Católica del Ecuador, Quito, Ecuador
| | - Sandeep Das
- Forest Ecology and Biodiversity Conservation Division, Kerala Forest Research Institute, Peechi, Kerala 680653, India
| | - Nikhil Gaitonde
- National Centre for Biological Sciences, Tata Institute of Fundamental Research, Bengaluru 560065, India
| | - David M Green
- Redpath Museum, McGill University, Montreal, Quebec H3A 0C4, Canada
| | - Jim Labisko
- The Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, The University of Kent, Canterbury, Kent, CT2 7NR, UK
- Island Biodiversity and Conservation Centre, University of Seychelles, PO Box 1348, Anse Royale, Mahé, Seychelles
| | - Jing Che
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Kunming 650223, China
- Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming 650223, China
| | - David W Weisrock
- Department of Biology, University of Kentucky, Lexington, KY 40506, USA
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15
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The role of selection in the evolution of marine turtles mitogenomes. Sci Rep 2020; 10:16953. [PMID: 33046778 PMCID: PMC7550602 DOI: 10.1038/s41598-020-73874-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 09/11/2020] [Indexed: 11/23/2022] Open
Abstract
Sea turtles are the only extant chelonian representatives that inhabit the marine environment. One key to successful colonization of this habitat is the adaptation to different energetic demands. Such energetic requirement is intrinsically related to the mitochondrial ability to generate energy through oxidative phosphorylation (OXPHOS) process. Here, we estimated Testudines phylogenetic relationships from 90 complete chelonian mitochondrial genomes and tested the adaptive evolution of 13 mitochondrial protein-coding genes of sea turtles to determine how natural selection shaped mitochondrial genes of the Chelonioidea clade. Complete mitogenomes showed strong support and resolution, differing at the position of the Chelonioidea clade in comparison to the turtle phylogeny based on nuclear genomic data. Codon models retrieved a relatively increased dN/dS (ω) on three OXPHOS genes for sea turtle lineages. Also, we found evidence of positive selection on at least three codon positions, encoded by NADH dehydrogenase genes (ND4 and ND5). The accelerated evolutionary rates found for sea turtles on COX2, ND1 and CYTB and the molecular footprints of positive selection found on ND4 and ND5 genes may be related to mitochondrial molecular adaptation to stress likely resulted from a more active lifestyle in sea turtles. Our study provides insight into the adaptive evolution of the mtDNA genome in sea turtles and its implications for the molecular mechanism of oxidative phosphorylation.
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16
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van der Geer AA. Size matters: micro-evolution in Polynesian rats highlights body size changes as initial stage in evolution. PeerJ 2020; 8:e9076. [PMID: 32377457 PMCID: PMC7194086 DOI: 10.7717/peerj.9076] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 04/07/2020] [Indexed: 12/03/2022] Open
Abstract
Microevolutionary patterns in populations of introduced rodent species have often been the focus of analytic studies for their potential relevance to understanding vertebrate evolution. The Polynesian rat (Rattus exulans) is an excellent proxy species because of its wide geographic and temporal distribution: its native and introduced combined range spans half the globe and it has been living for at least seven centuries wherever it was introduced. The objective of this study was to assess the effects of long-term isolation (insularity; up to 4,000 years) and geographic variables on skull shape variation using geometric morphometrics. A sample of 513 specimens from 103 islands and four mainland areas was analysed. This study, to my knowledge the first to extensively sample introduced rats, analysed 59 two-dimensional landmarks on the skull. Landmarks were obtained in three separate aspects (dorsal, lateral, ventral skull view). The coordinate data were then subjected to a multivariate ordination analysis (principal components analysis, or PCA), multivariate regressions, and a canonical variates analysis (CVA). Three measures of disparity were evaluated for each view. The results show that introduced Polynesian rats evolve skull shapes that conform to the general mammalian interspecific pattern of cranial evolutionary allometry (CREA), with proportionally longer snouts in larger specimens. In addition, larger skulls are more tubular in shape than the smaller skulls, which are more balloon-shaped with a rounder and wider braincase relative to those of large skulls. This difference is also observed between the sexes (sexual dimorphism), due to the slightly larger average male size. Large, tubular skulls with long snouts are typical for Polynesia and Remote Oceania, where no native mammals occur. The greater disparity of Polynesian rats on mammal species-poor islands ('exulans-only' region) provides further insight into how diversity may affect diversification through ecological release from predators and competitors.
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17
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Bhardwaj S, Jolander LSH, Wenk MR, Oliver JC, Nijhout HF, Monteiro A. Origin of the mechanism of phenotypic plasticity in satyrid butterfly eyespots. eLife 2020; 9:49544. [PMID: 32041684 PMCID: PMC7012602 DOI: 10.7554/elife.49544] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 01/08/2020] [Indexed: 12/14/2022] Open
Abstract
Plasticity is often regarded as a derived adaptation to help organisms survive in variable but predictable environments, however, we currently lack a rigorous, mechanistic examination of how plasticity evolves in a large comparative framework. Here, we show that phenotypic plasticity in eyespot size in response to environmental temperature observed in Bicyclus anynana satyrid butterflies is a complex derived adaptation of this lineage. By reconstructing the evolution of known physiological and molecular components of eyespot size plasticity in a comparative framework, we showed that 20E titer plasticity in response to temperature is a pre-adaptation shared by all butterfly species examined, whereas expression of EcR in eyespot centers, and eyespot sensitivity to 20E, are both derived traits found only in a subset of species with eyespots. A well-known family of butterflies have circular patterns on their wings that look like eyes. These eye-like markings help deflect predators away from the butterfly’s body so they attack the outer edges of their wings. However, in certain seasons, such as the dry season in Africa, the best way for this family to survive is by not drawing any attention to their bodies. Thus, butterflies born during this season shrink the size of their eyespots so they can hide among the dry leaves. How this family of butterflies are able to change the size of these eye-like spots has only been studied in the species Bicyclus anynana. During development low temperatures, which signify the beginning of the dry season, reduce the amount of a hormone called 20E circulating in the blood of this species. This changes the behavior of hormone-sensitive cells in the eyespots making them smaller in size. But it remains unclear how B. anynana evolved this remarkable tactic and whether its relatives have similar abilities. Now, Bhardwaj et al. show that B. anynana is the only one of its relatives that can amend the size of its eyespots in response to temperature changes. In the experiments, 13 different species of butterflies, mostly from the family that has eyespots, were developed under two different temperatures. Low temperatures caused 20E hormone levels to decrease in all 13 species. However, most of these species did not develop smaller eyespots in response to this temperature change. This includes species that are known to have larger and smaller eyespots depending on the season. Like B. anynana, four of the species studied have receptors for the 20E hormone at the center of their eyespots. However, changing 20E hormone levels in these species did not reduce eyespot size. These results show that although temperature changes alter hormone levels in a number of species, only B. anynana have taken advantage of this mechanism to regulate eyespot size. In addition, Bhardwaj et al. found that this unique mechanism evolved from several genetic changes over millions of years. Other species likely use other environmental cues to trigger seasonal changes in the size of their eyespots.
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Affiliation(s)
- Shivam Bhardwaj
- Department of Biological Sciences, National University of Singapore, Singapore, Singapore
| | - Lim Si-Hui Jolander
- Department of Biochemistry, National University of Singapore, Singapore, Singapore
| | - Markus R Wenk
- Department of Biological Sciences, National University of Singapore, Singapore, Singapore.,Department of Biochemistry, National University of Singapore, Singapore, Singapore
| | - Jeffrey C Oliver
- Office of Digital Innovation & Stewardship, University of Arizona, Tucson, United States
| | | | - Antonia Monteiro
- Department of Biological Sciences, National University of Singapore, Singapore, Singapore.,Yale-NUS College, Singapore, Singapore
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18
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Faircloth BC, Alda F, Hoekzema K, Burns MD, Oliveira C, Albert JS, Melo BF, Ochoa LE, Roxo FF, Chakrabarty P, Sidlauskas BL, Alfaro ME. A Target Enrichment Bait Set for Studying Relationships among Ostariophysan Fishes. COPEIA 2020. [DOI: 10.1643/cg-18-139] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Brant C. Faircloth
- Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana 70803; (BCF) ; and (PC) . Send reprint requests to BCF
| | - Fernando Alda
- Department of Biology, Geology and Environmental Science, University of Tennessee at Chattanooga, Chattanooga, Tennessee 37403;
| | - Kendra Hoekzema
- Department of Fisheries and Wildlife, Oregon State University, Corvallis, Oregon 97331; (KH) ; and (BLS)
| | - Michael D. Burns
- Department of Fisheries and Wildlife, Oregon State University, Corvallis, Oregon 97331; (KH) ; and (BLS)
| | - Claudio Oliveira
- Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, São Paulo 18618-689, Brazil; (CO) ; (BFM) ; and (LEO)
| | - James S. Albert
- Department of Biology, University of Louisiana at Lafayette, Lafayette, Louisiana 70503;
| | - Bruno F. Melo
- Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, São Paulo 18618-689, Brazil; (CO) ; (BFM) ; and (LEO)
| | - Luz E. Ochoa
- Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, São Paulo 18618-689, Brazil; (CO) ; (BFM) ; and (LEO)
| | - Fábio F. Roxo
- Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, SP, Brazil;
| | - Prosanta Chakrabarty
- Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana 70803; (BCF) ; and (PC) . Send reprint requests to BCF
| | - Brian L. Sidlauskas
- Department of Fisheries and Wildlife, Oregon State University, Corvallis, Oregon 97331; (KH) ; and (BLS)
| | - Michael E. Alfaro
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, California 90095;
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19
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Roycroft EJ, Moussalli A, Rowe KC. Phylogenomics Uncovers Confidence and Conflict in the Rapid Radiation of Australo-Papuan Rodents. Syst Biol 2019; 69:431-444. [DOI: 10.1093/sysbio/syz044] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Accepted: 06/12/2019] [Indexed: 11/13/2022] Open
Abstract
Abstract
The estimation of robust and accurate measures of branch support has proven challenging in the era of phylogenomics. In data sets of potentially millions of sites, bootstrap support for bifurcating relationships around very short internal branches can be inappropriately inflated. Such overestimation of branch support may be particularly problematic in rapid radiations, where phylogenetic signal is low and incomplete lineage sorting severe. Here, we explore this issue by comparing various branch support estimates under both concatenated and coalescent frameworks, in the recent radiation Australo-Papuan murine rodents (Muridae: Hydromyini). Using nucleotide sequence data from 1245 independent loci and several phylogenomic inference methods, we unequivocally resolve the majority of genus-level relationships within Hydromyini. However, at four nodes we recover inconsistency in branch support estimates both within and among concatenated and coalescent approaches. In most cases, concatenated likelihood approaches using standard fast bootstrap algorithms did not detect any uncertainty at these four nodes, regardless of partitioning strategy. However, we found this could be overcome with two-stage resampling, that is, across genes and sites within genes (using -bsam GENESITE in IQ-TREE). In addition, low confidence at recalcitrant nodes was recovered using UFBoot2, a recent revision to the bootstrap protocol in IQ-TREE, but this depended on partitioning strategy. Summary coalescent approaches also failed to detect uncertainty under some circumstances. For each of four recalcitrant nodes, an equivalent (or close to equivalent) number of genes were in strong support ($>$ 75% bootstrap) of both the primary and at least one alternative topological hypothesis, suggesting notable phylogenetic conflict among loci not detected using some standard branch support metrics. Recent debate has focused on the appropriateness of concatenated versus multigenealogical approaches to resolving species relationships, but less so on accurately estimating uncertainty in large data sets. Our results demonstrate the importance of employing multiple approaches when assessing confidence and highlight the need for greater attention to the development of robust measures of uncertainty in the era of phylogenomics.
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Affiliation(s)
- Emily J Roycroft
- School of BioSciences, The University of Melbourne, Parkville, VIC 3010, Australia
- Department of Science, Museums Victoria, GPO Box 666, Melbourne, VIC 3001, Australia
| | - Adnan Moussalli
- School of BioSciences, The University of Melbourne, Parkville, VIC 3010, Australia
- Department of Science, Museums Victoria, GPO Box 666, Melbourne, VIC 3001, Australia
| | - Kevin C Rowe
- School of BioSciences, The University of Melbourne, Parkville, VIC 3010, Australia
- Department of Science, Museums Victoria, GPO Box 666, Melbourne, VIC 3001, Australia
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20
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Sato JJ, Bradford TM, Armstrong KN, Donnellan SC, Echenique-Diaz LM, Begué-Quiala G, Gámez-Díez J, Yamaguchi N, Nguyen ST, Kita M, Ohdachi SD. Post K-Pg diversification of the mammalian order Eulipotyphla as suggested by phylogenomic analyses of ultra-conserved elements. Mol Phylogenet Evol 2019; 141:106605. [PMID: 31479732 DOI: 10.1016/j.ympev.2019.106605] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 08/26/2019] [Accepted: 08/27/2019] [Indexed: 11/26/2022]
Abstract
The origin of the mammalian order Eulipotyphla has been debated intensively with arguments around whether they began diversifying before or after the Cretaceous-Palaeogene (K-Pg) boundary at 66 Ma. Here, we used an in-solution nucleotide capture method and next generation DNA sequencing to determine the sequence of hundreds of ultra-conserved elements (UCEs), and conducted phylogenomic and molecular dating analyses for the four extant eulipotyphlan lineages-Erinaceidae, Solenodontidae, Soricidae, and Talpidae. Concatenated maximum-likelihood analyses with single or partitioned models and a coalescent species-tree analysis showed that divergences among the four major eulipotyphlan lineages occurred within a short period of evolutionary time, but did not resolve the interrelationships among them. Alternative suboptimal phylogenetic hypotheses received consistently the same amount of support from different UCE loci, and were not significantly different from the maximum likelihood tree topology, suggesting the prevalence of stochastic lineage sorting. Molecular dating analyses that incorporated among-lineage evolutionary rate differences supported a scenario where the four eulipotyphlan families diversified between 57.8 and 63.2 Ma. Given short branch lengths with low support values, traces of rampant genome-wide stochastic lineage sorting, and post K-Pg diversification, we concluded that the crown eulipotyphlan lineages arose through a rapid diversification after the K-Pg boundary when novel niches were created by the mass extinction of species.
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Affiliation(s)
- Jun J Sato
- Laboratory of Animal Cell Technology, Faculty of Life Science and Technology, Fukuyama University, Higashimuracho, Aza, Sanzo, 985, Fukuyama 729-0292, Japan; School of Biological Sciences, University of Adelaide, Adelaide, South Australia 5005, Australia.
| | - Tessa M Bradford
- School of Biological Sciences, University of Adelaide, Adelaide, South Australia 5005, Australia; South Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia
| | - Kyle N Armstrong
- School of Biological Sciences, University of Adelaide, Adelaide, South Australia 5005, Australia; South Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia
| | - Stephen C Donnellan
- School of Biological Sciences, University of Adelaide, Adelaide, South Australia 5005, Australia; South Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia
| | - Lazaro M Echenique-Diaz
- Environmental Education Center, Miyagi University of Education, Aramaki Aza-Aoba, Aoba-ku, Sendai 980-0845, Japan
| | - Gerardo Begué-Quiala
- Unidad Presupuestada Parque Nacional Alejandro de Humboldt (CITMA), Calle Abogado 14 e/12 y 13 Norte, Guantanamo 95200, Cuba
| | - Jorgelino Gámez-Díez
- Estación Ecológica La Melba, Unidad Presupuestada Parque Nacional Alejandro de Humboldt, CITMA-Guantánamo, Cuba
| | - Nobuyuki Yamaguchi
- Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, PO Box 2713, Doha, Qatar
| | - Son Truong Nguyen
- Institute of Ecology and Biological Resources and Graduate University of Science and Technology, Vietnam Academy of Sciences and Technology, 18 Hoang Quoc Viet, Hanoi, Viet Nam
| | - Masaki Kita
- Graduate School of Bioagricultural Sciences, Nagoya University Furo-cho, Chikusa, Nagoya 464-8601, Japan
| | - Satoshi D Ohdachi
- Institute of Low Temperature Science, Hokkaido University, Kita-19 Nishi-8, Kita-ku, Sapporo 060-0819, Japan
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21
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Comparative Phylogenomics, a Stepping Stone for Bird Biodiversity Studies. DIVERSITY-BASEL 2019. [DOI: 10.3390/d11070115] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Birds are a group with immense availability of genomic resources, and hundreds of forthcoming genomes at the doorstep. We review recent developments in whole genome sequencing, phylogenomics, and comparative genomics of birds. Short read based genome assemblies are common, largely due to efforts of the Bird 10K genome project (B10K). Chromosome-level assemblies are expected to increase due to improved long-read sequencing. The available genomic data has enabled the reconstruction of the bird tree of life with increasing confidence and resolution, but challenges remain in the early splits of Neoaves due to their explosive diversification after the Cretaceous-Paleogene (K-Pg) event. Continued genomic sampling of the bird tree of life will not just better reflect their evolutionary history but also shine new light onto the organization of phylogenetic signal and conflict across the genome. The comparatively simple architecture of avian genomes makes them a powerful system to study the molecular foundation of bird specific traits. Birds are on the verge of becoming an extremely resourceful system to study biodiversity from the nucleotide up.
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22
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Laumer CE. Inferring Ancient Relationships with Genomic Data: A Commentary on Current Practices. Integr Comp Biol 2019; 58:623-639. [PMID: 29982611 DOI: 10.1093/icb/icy075] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Contemporary phylogeneticists enjoy an embarrassment of riches, not only in the volumes of data now available, but also in the diversity of bioinformatic tools for handling these data. Here, I discuss a subset of these tools I consider well-suited to the task of inferring ancient relationships with coding sequence data in particular, encompassing data generation, orthology assignment, alignment and gene tree inference, supermatrix construction, and analysis under the best-fitting models applicable to large-scale datasets. Throughout, I compare and critique methods, considering both their theoretical principles and the details of their implementation, and offering practical tips on usage where appropriate. I also entertain different motivations for analyzing what are almost always originally DNA sequence data as codons, amino acids, and higher-order recodings. Although presented in a linear order, I see value in using the diversity of tools available to us to assess the sensitivity of clades of biological interest to different gene and taxon sets and analytical modes, which can be an indication of the presence of systematic error, of which a few forms remain poorly controlled by even the best available inference methods.
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Affiliation(s)
- Christopher E Laumer
- EMBL-European Bioinformatics Institute, Wellcome Trust Genome Campus, EBML-EBI South Building, Hinxton CB10 1SD, UK
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23
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Schrago CG, Seuánez HN. Large ancestral effective population size explains the difficult phylogenetic placement of owl monkeys. Am J Primatol 2019; 81:e22955. [PMID: 30779198 DOI: 10.1002/ajp.22955] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 12/05/2018] [Accepted: 12/15/2018] [Indexed: 11/07/2022]
Abstract
The phylogenetic position of owl monkeys, grouped in the genus Aotus, has been a controversial issue for understanding Neotropical primate evolution. Explanations of the difficult phylogenetic assignment of owl monkeys have been elusive, frequently relying on insufficient data (stochastic error) or scenarios of rapid speciation (adaptive radiation) events. Using a coalescent-based approach, we explored the population-level mechanisms likely explaining these topological discrepancies. We examined the topological variance of 2,192 orthologous genes shared between representatives of the three major Cebidae lineages and the outgroup. By employing a methodological framework that allows for reticulated tree topologies, our analysis explicitly tested for non-dichotomous evolutionary processes impacting the finding of the position of owl monkeys in the cebid phylogeny. Our findings indicated that Aotus is a sister lineage of the callitrichines. Most gene trees (>50%) failed to recover the species tree topology, although the distribution of gene trees mismatching the true species topology followed the standard expectation of the multispecies coalescent without reticulation. We showed that the large effective population size of the common ancestor of Aotus and callitrichines was the most likely factor responsible for generating phylogenetic uncertainty. On the other hand, fast speciation scenarios or introgression played minor roles. We propose that the difficult phylogenetic placement of Aotus is explained by population-level processes associated with the large ancestral effective size. These results shed light on the biogeography of the early cebid diversification in the Miocene, highlighting the relevance of evaluating phylogenetic relationships employing population-aware approaches.
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Affiliation(s)
- Carlos G Schrago
- Department of Genetics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Hector N Seuánez
- Department of Genetics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.,Division of Genetics, National Cancer Institute, Rio de Janeiro, Brazil
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24
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Alda F, Tagliacollo VA, Bernt MJ, Waltz BT, Ludt WB, Faircloth BC, Alfaro ME, Albert JS, Chakrabarty P. Resolving Deep Nodes in an Ancient Radiation of Neotropical Fishes in the Presence of Conflicting Signals from Incomplete Lineage Sorting. Syst Biol 2018; 68:573-593. [DOI: 10.1093/sysbio/syy085] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 11/30/2018] [Accepted: 12/03/2018] [Indexed: 12/13/2022] Open
Affiliation(s)
- Fernando Alda
- Museum of Natural Science, Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA
- Department of Biology, Geology and Environmental Science, University of Tennessee at Chattanooga, Chattanooga, TN 37403, USA
| | - Victor A Tagliacollo
- Museu de Zoologia da Universidade de São Paulo (MZUSP), Ipirianga, 04263-000, São Paulo, São Paulo, Brazil
| | - Maxwell J Bernt
- Department of Biology, University of Louisiana at Lafayette, Lafayette, LA 70503, USA
| | - Brandon T Waltz
- Department of Biology, University of Louisiana at Lafayette, Lafayette, LA 70503, USA
| | - William B Ludt
- Museum of Natural Science, Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Brant C Faircloth
- Museum of Natural Science, Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Michael E Alfaro
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, USA
| | - James S Albert
- Department of Biology, University of Louisiana at Lafayette, Lafayette, LA 70503, USA
| | - Prosanta Chakrabarty
- Museum of Natural Science, Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA
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25
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Ferreira M, Fernandes AM, Aleixo A, Antonelli A, Olsson U, Bates JM, Cracraft J, Ribas CC. Evidence for mtDNA capture in the jacamar Galbula leucogastra/chalcothorax species-complex and insights on the evolution of white-sand ecosystems in the Amazon basin. Mol Phylogenet Evol 2018; 129:149-157. [DOI: 10.1016/j.ympev.2018.07.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Revised: 06/21/2018] [Accepted: 07/11/2018] [Indexed: 01/09/2023]
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26
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Appropriate Assignment of Fossil Calibration Information Minimizes the Difference between Phylogenetic and Pedigree Mutation Rates in Humans. Life (Basel) 2018; 8:life8040049. [PMID: 30360410 PMCID: PMC6316143 DOI: 10.3390/life8040049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 10/18/2018] [Accepted: 10/18/2018] [Indexed: 12/24/2022] Open
Abstract
Studies that measured mutation rates in human populations using pedigrees have reported values that differ significantly from rates estimated from the phylogenetic comparison of humans and chimpanzees. Consequently, exchanges between mutation rate values across different timescales lead to conflicting divergence time estimates. It has been argued that this variation of mutation rate estimates across hominoid evolution is in part caused by incorrect assignment of calibration information to the mean coalescent time among loci, instead of the true genetic isolation (speciation) time between humans and chimpanzees. In this study, we investigated the feasibility of estimating the human pedigree mutation rate using phylogenetic data from the genomes of great apes. We found that, when calibration information was correctly assigned to the human⁻chimpanzee speciation time (and not to the coalescent time), estimates of phylogenetic mutation rates were statistically equivalent to the estimates previously reported using studies of human pedigrees. We conclude that, within the range of biologically realistic ancestral generation times, part of the difference between whole-genome phylogenetic and pedigree mutation rates is due to inappropriate assignment of fossil calibration information to the mean coalescent time instead of the speciation time. Although our results focus on the human⁻chimpanzee divergence, our findings are general, and relevant to the inference of the timescale of the tree of life.
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27
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Villaverde T, Pokorny L, Olsson S, Rincón-Barrado M, Johnson MG, Gardner EM, Wickett NJ, Molero J, Riina R, Sanmartín I. Bridging the micro- and macroevolutionary levels in phylogenomics: Hyb-Seq solves relationships from populations to species and above. THE NEW PHYTOLOGIST 2018; 220:636-650. [PMID: 30016546 DOI: 10.1111/nph.15312] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 06/04/2018] [Indexed: 05/20/2023]
Abstract
Reconstructing phylogenetic relationships at the micro- and macroevoutionary levels within the same tree is problematic because of the need to use different data types and analytical frameworks. We test the power of target enrichment to provide phylogenetic resolution based on DNA sequences from above species to within populations, using a large herbarium sampling and Euphorbia balsamifera (Euphorbiaceae) as a case study. Target enrichment with custom probes was combined with genome skimming (Hyb-Seq) to sequence 431 low-copy nuclear genes and partial plastome DNA. We used supermatrix, multispecies-coalescent approaches, and Bayesian dating to estimate phylogenetic relationships and divergence times. Euphorbia balsamifera, with a disjunct Rand Flora-type distribution at opposite sides of Africa, comprises three well-supported subspecies: western Sahelian sepium is sister to eastern African-southern Arabian adenensis and Macaronesian-southwest Moroccan balsamifera. Lineage divergence times support Late Miocene to Pleistocene diversification and climate-driven vicariance to explain the Rand Flora pattern. We show that probes designed using genomic resources from taxa not directly related to the focal group are effective in providing phylogenetic resolution at deep and shallow evolutionary levels. Low capture efficiency in herbarium samples increased the proportion of missing data but did not bias estimation of phylogenetic relationships or branch lengths.
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Affiliation(s)
- Tamara Villaverde
- Real Jardín Botánico (RJB-CSIC), Plaza de Murillo 2, 28014, Madrid, Spain
| | - Lisa Pokorny
- Comparative Plant and Fungal Biology Department, Royal Botanic Gardens, Kew, Richmond, TW9 3DS, UK
| | - Sanna Olsson
- Department of Forest Ecology and Genetics, INIA Forest Research Centre (INIA-CIFOR), Ctra. de la Coruña km. 7.5, 28040, Madrid, Spain
| | | | - Matthew G Johnson
- Department of Biological Sciences, Texas Tech University, 2901 Main St, Lubbock, TX, 79409-43131, USA
- Department of Plant Science and Conservation, Chicago Botanical Garden, 1000 Lake Cook Road, Glencoe, IL, 60022, USA
| | | | - Norman J Wickett
- Department of Plant Science and Conservation, Chicago Botanical Garden, 1000 Lake Cook Road, Glencoe, IL, 60022, USA
- Program in Plant Biology and Conservation, Northwestern University, 2205 Tech Drive, Evanston, IL, 60208, USA
| | - Julià Molero
- Laboratori de Botànica, Departament de Biologia, Sanitat i Medi Ambient, Facultat de Farmàcia, Universitat de Barcelona, 08028, Barcelona, Spain
| | - Ricarda Riina
- Real Jardín Botánico (RJB-CSIC), Plaza de Murillo 2, 28014, Madrid, Spain
| | - Isabel Sanmartín
- Real Jardín Botánico (RJB-CSIC), Plaza de Murillo 2, 28014, Madrid, Spain
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28
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Herrando-Moraira S. Exploring data processing strategies in NGS target enrichment to disentangle radiations in the tribe Cardueae (Compositae). Mol Phylogenet Evol 2018; 128:69-87. [PMID: 30036700 DOI: 10.1016/j.ympev.2018.07.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 07/13/2018] [Accepted: 07/14/2018] [Indexed: 12/17/2022]
Abstract
Target enrichment is a cost-effective sequencing technique that holds promise for elucidating evolutionary relationships in fast-evolving lineages. However, potential biases and impact of bioinformatic sequence treatments in phylogenetic inference have not been thoroughly explored yet. Here, we investigate this issue with an ultimate goal to shed light into a highly diversified group of Compositae (Asteraceae) constituted by four main genera: Arctium, Cousinia, Saussurea, and Jurinea. Specifically, we compared sequence data extraction methods implemented in two easy-to-use workflows, PHYLUCE and HybPiper, and assessed the impact of two filtering practices intended to reduce phylogenetic noise. In addition, we compared two phylogenetic inference methods: (1) the concatenation approach, in which all loci were concatenated in a supermatrix; and (2) the coalescence approach, in which gene trees were produced independently and then used to construct a species tree under coalescence assumptions. Here we confirm the usefulness of the set of 1061 COS targets (a nuclear conserved orthology loci set developed for the Compositae) across a variety of taxonomic levels. Intergeneric relationships were completely resolved: there are two sister groups, Arctium-Cousinia and Saussurea-Jurinea, which are in agreement with a morphological hypothesis. Intrageneric relationships among species of Arctium, Cousinia, and Saussurea are also well defined. Conversely, conflicting species relationships remain for Jurinea. Methodological choices significantly affected phylogenies in terms of topology, branch length, and support. Across all analyses, the phylogeny obtained using HybPiper and the strictest scheme of removing fast-evolving sites was estimated as the optimal. Regarding methodological choices, we conclude that: (1) trees obtained under the coalescence approach are topologically more congruent between them than those inferred using the concatenation approach; (2) refining treatments only improved support values under the concatenation approach; and (3) branch support values are maximized when fast-evolving sites are removed in the concatenation approach, and when a higher number of loci is analyzed in the coalescence approach.
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Affiliation(s)
- Sonia Herrando-Moraira
- Botanic Institute of Barcelona (IBB, CSIC-ICUB), Pg. del Migdia, s.n., 08038 Barcelona, Spain.
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29
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Pereira AG, Schrago CG. Incomplete lineage sorting impacts the inference of macroevolutionary regimes from molecular phylogenies when concatenation is employed: An analysis based on Cetacea. Ecol Evol 2018; 8:6965-6971. [PMID: 30073059 PMCID: PMC6065336 DOI: 10.1002/ece3.4212] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/17/2018] [Accepted: 04/19/2018] [Indexed: 11/27/2022] Open
Abstract
Interest in methods that estimate speciation and extinction rates from molecular phylogenies has increased over the last decade. The application of such methods requires reliable estimates of tree topology and node ages, which are frequently obtained using standard phylogenetic inference combining concatenated loci and molecular dating. However, this practice disregards population-level processes that generate gene tree/species tree discordance. We evaluated the impact of employing concatenation and coalescent-based phylogeny inference in recovering the correct macroevolutionary regime using simulated data based on the well-established diversification rate shift of delphinids in Cetacea. We found that under scenarios of strong incomplete lineage sorting, macroevolutionary analysis of phylogenies inferred by concatenating loci failed to recover the delphinid diversification shift, while the coalescent-based tree consistently retrieved the correct rate regime. We suggest that ignoring microevolutionary processes reduces the power of methods that estimate macroevolutionary regimes from molecular data.
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Affiliation(s)
- Anieli G. Pereira
- Department of GeneticsFederal University of Rio de JaneiroRio de JaneiroBrazil
| | - Carlos G. Schrago
- Department of GeneticsFederal University of Rio de JaneiroRio de JaneiroBrazil
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30
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Moore AJ, Vos JMD, Hancock LP, Goolsby E, Edwards EJ. Targeted Enrichment of Large Gene Families for Phylogenetic Inference: Phylogeny and Molecular Evolution of Photosynthesis Genes in the Portullugo Clade (Caryophyllales). Syst Biol 2017; 67:367-383. [DOI: 10.1093/sysbio/syx078] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 09/18/2017] [Indexed: 01/01/2023] Open
Affiliation(s)
- Abigail J Moore
- Department of Ecology and Evolutionary Biology, Brown University, Box G-W, Providence, RI 02912, USA
- Department of Microbiology and Plant Biology and Oklahoma Biological Survey, University of Oklahoma, 770 Van Vleet Oval, Norman, OK 73019, USA
| | - Jurriaan M De Vos
- Department of Ecology and Evolutionary Biology, Brown University, Box G-W, Providence, RI 02912, USA
- Department of Comparative Plant and Fungal Biology, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AE, UK
- Department of Environmental Sciences—Botany, University of Basel, Totengässlein 3, 4051 Basel, Switzerland
| | - Lillian P Hancock
- Department of Ecology and Evolutionary Biology, Brown University, Box G-W, Providence, RI 02912, USA
| | - Eric Goolsby
- Department of Ecology and Evolutionary Biology, Brown University, Box G-W, Providence, RI 02912, USA
- Department of Ecology and Evolutionary Biology, Yale University, PO Box 208105, New Haven, CT 06520, USA
| | - Erika J Edwards
- Department of Ecology and Evolutionary Biology, Brown University, Box G-W, Providence, RI 02912, USA
- Department of Ecology and Evolutionary Biology, Yale University, PO Box 208105, New Haven, CT 06520, USA
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31
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García N, Folk RA, Meerow AW, Chamala S, Gitzendanner MA, Oliveira RSD, Soltis DE, Soltis PS. Deep reticulation and incomplete lineage sorting obscure the diploid phylogeny of rain-lilies and allies (Amaryllidaceae tribe Hippeastreae). Mol Phylogenet Evol 2017; 111:231-247. [PMID: 28390909 DOI: 10.1016/j.ympev.2017.04.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 03/31/2017] [Accepted: 04/03/2017] [Indexed: 12/23/2022]
Abstract
Hybridization is a frequent and important force in plant evolution. Next-generation sequencing (NGS) methods offer new possibilities for clade resolution and ambitious sampling of gene genealogies, yet difficulty remains in detecting deep reticulation events using currently available methods. We reconstructed the phylogeny of diploid representatives of Amaryllidaceae tribe Hippeastreae to test the hypothesis of ancient hybridizations preceding the radiation of its major subclade, Hippeastrinae. Through hybrid enrichment of DNA libraries and NGS, we obtained data for 18 nuclear loci through a curated assembly approach and nearly complete plastid genomes for 35 ingroup taxa plus 5 outgroups. Additionally, we obtained alignments for 39 loci through an automated assembly algorithm. These data were analyzed with diverse phylogenetic methods, including concatenation, coalescence-based species tree estimation, Bayesian concordance analysis, and network reconstructions, to provide insights into the evolutionary relationships of Hippeastreae. Causes for gene tree heterogeneity and cytonuclear discordance were examined through a Bayesian posterior predictive approach (JML) and coalescent simulations. Two major clades were found, Hippeastrinae and Traubiinae, as previously reported. Our results suggest the presence of two major nuclear lineages in Hippeastrinae characterized by different chromosome numbers: (1) Tocantinia and Hippeastrum with 2n=22, and (2) Eithea, Habranthus, Rhodophiala, and Zephyranthes mostly with 2n=12, 14, and 18. Strong cytonuclear discordance was confirmed in Hippeastrinae, and a network scenario with at least six hybridization events is proposed to reconcile nuclear and plastid signals, along a backbone that may also have been affected by incomplete lineage sorting at the base of each major subclade.
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Affiliation(s)
- Nicolás García
- Facultad de Ciencias Forestales y de la Conservación de la Naturaleza, Universidad de Chile, Av. Santa Rosa 11315, La Pintana, Santiago, Chile; Florida Museum of Natural History, University of Florida, Gainesville, FL 32611, USA.
| | - Ryan A Folk
- Florida Museum of Natural History, University of Florida, Gainesville, FL 32611, USA.
| | - Alan W Meerow
- USDA-ARS-SHRS-National Germplasm Repository, 13601 Old Cutler Road, Miami, FL 33158, USA.
| | - Srikar Chamala
- Department of Biology, University of Florida, Gainesville, FL 32611, USA; Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL 32610, USA.
| | - Matthew A Gitzendanner
- Florida Museum of Natural History, University of Florida, Gainesville, FL 32611, USA; Department of Biology, University of Florida, Gainesville, FL 32611, USA.
| | - Renata Souza de Oliveira
- GaTE Laboratory, Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, IBUSP, Rua do Matão 277, CEP: 05508-090 São Paulo, SP, Brazil.
| | - Douglas E Soltis
- Florida Museum of Natural History, University of Florida, Gainesville, FL 32611, USA; Department of Biology, University of Florida, Gainesville, FL 32611, USA; Genetics Institute, University of Florida, Gainesville, FL 32610, USA.
| | - Pamela S Soltis
- Florida Museum of Natural History, University of Florida, Gainesville, FL 32611, USA; Department of Biology, University of Florida, Gainesville, FL 32611, USA; Genetics Institute, University of Florida, Gainesville, FL 32610, USA.
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Maddison DR. The rapidly changing landscape of insect phylogenetics. CURRENT OPINION IN INSECT SCIENCE 2016; 18:77-82. [PMID: 27939714 DOI: 10.1016/j.cois.2016.09.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 09/23/2016] [Indexed: 06/06/2023]
Abstract
Insect phylogenetics is being profoundly changed by many innovations. Although rapid developments in genomics have center stage, key progress has been made in phenomics, field and museum science, digital databases and pipelines, analytical tools, and the culture of science. The importance of these methodological and cultural changes to the pace of inference of the hexapod Tree of Life is discussed. The innovations have the potential, when synthesized and mobilized in ways as yet unforeseen, to shine light on the million or more clades in insects, and infer their composition with confidence. There are many challenges to overcome before insects can enter the 'phylocognisant age', but because of the promise of genomics, phenomics, and informatics, that is now an imaginable future.
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Affiliation(s)
- David R Maddison
- Department of Integrative Biology, 3029 Cordley Hall, Oregon State University, Corvallis, OR 97331, USA.
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Mendes FK, Hahn Y, Hahn MW. Gene Tree Discordance Can Generate Patterns of Diminishing Convergence over Time. Mol Biol Evol 2016; 33:3299-3307. [PMID: 27634870 DOI: 10.1093/molbev/msw197] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Phenotypic convergence is an exciting outcome of adaptive evolution, occurring when different species find similar solutions to the same problem. Unraveling the molecular basis of convergence provides a way to link genotype to adaptive phenotypes, but can also shed light on the extent to which molecular evolution is repeatable and predictable. Many recent genome-wide studies have uncovered a striking pattern of diminishing convergence over time, ascribing this pattern to the presence of intramolecular epistatic interactions. Here, we consider gene tree discordance as an alternative cause of changes in convergence levels over time in a primate dataset. We demonstrate that gene tree discordance can produce patterns of diminishing convergence by itself, and that controlling for discordance as a cause of apparent convergence makes the pattern disappear. We also show that synonymous substitutions, where neither selection nor epistasis should be prevalent, have the same diminishing pattern of molecular convergence in primates. Finally, we demonstrate that even in situations where biological discordance is not possible, discordance due to errors in species tree inference can drive similar patterns. Though intramolecular epistasis could in principle create a pattern of declining convergence over time, our results suggest a possible alternative explanation for this widespread pattern. These results contribute to a growing appreciation not just of the presence of gene tree discordance, but of the unpredictable effects this discordance can have on analyses of molecular evolution.
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Affiliation(s)
- Fábio K Mendes
- Department of Biology, Indiana University, Bloomington, IN
| | - Yoonsoo Hahn
- Department of Life Science, Research Center for Biomolecules and Biosystems, Chung-Ang University, Seoul, Republic of Korea
| | - Matthew W Hahn
- Department of Biology, Indiana University, Bloomington, IN.,School of Informatics and Computing, Indiana University, Bloomington, IN
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Li Y, Kocot KM, Whelan NV, Santos SR, Waits DS, Thornhill DJ, Halanych KM. Phylogenomics of tubeworms (Siboglinidae, Annelida) and comparative performance of different reconstruction methods. ZOOL SCR 2016. [DOI: 10.1111/zsc.12201] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Yuanning Li
- Department of Biological Sciences & Molette Biology Laboratory for Environmental and Climate Change Studies Auburn University 36830 Auburn AL USA
| | - Kevin M. Kocot
- Department of Biological Sciences & Molette Biology Laboratory for Environmental and Climate Change Studies Auburn University 36830 Auburn AL USA
- Department of Biological Sciences & Alabama Museum of Natural History The University of Alabama 35847 Tuscaloosa AL USA
| | - Nathan V. Whelan
- Department of Biological Sciences & Molette Biology Laboratory for Environmental and Climate Change Studies Auburn University 36830 Auburn AL USA
| | - Scott R. Santos
- Department of Biological Sciences & Molette Biology Laboratory for Environmental and Climate Change Studies Auburn University 36830 Auburn AL USA
| | - Damien S. Waits
- Department of Biological Sciences & Molette Biology Laboratory for Environmental and Climate Change Studies Auburn University 36830 Auburn AL USA
| | - Daniel J. Thornhill
- Department of Biological Sciences & Molette Biology Laboratory for Environmental and Climate Change Studies Auburn University 36830 Auburn AL USA
| | - Kenneth M. Halanych
- Department of Biological Sciences & Molette Biology Laboratory for Environmental and Climate Change Studies Auburn University 36830 Auburn AL USA
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35
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Mendes FK, Hahn MW. Gene Tree Discordance Causes Apparent Substitution Rate Variation. Syst Biol 2016; 65:711-21. [DOI: 10.1093/sysbio/syw018] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 02/23/2016] [Indexed: 01/01/2023] Open
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Suh A, Smeds L, Ellegren H. The Dynamics of Incomplete Lineage Sorting across the Ancient Adaptive Radiation of Neoavian Birds. PLoS Biol 2015; 13:e1002224. [PMID: 26284513 PMCID: PMC4540587 DOI: 10.1371/journal.pbio.1002224] [Citation(s) in RCA: 159] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 07/10/2015] [Indexed: 12/18/2022] Open
Abstract
The diversification of neoavian birds is one of the most rapid adaptive radiations of extant organisms. Recent whole-genome sequence analyses have much improved the resolution of the neoavian radiation and suggest concurrence with the Cretaceous-Paleogene (K-Pg) boundary, yet the causes of the remaining genome-level irresolvabilities appear unclear. Here we show that genome-level analyses of 2,118 retrotransposon presence/absence markers converge at a largely consistent Neoaves phylogeny and detect a highly differential temporal prevalence of incomplete lineage sorting (ILS), i.e., the persistence of ancestral genetic variation as polymorphisms during speciation events. We found that ILS-derived incongruences are spread over the genome and involve 35% and 34% of the analyzed loci on the autosomes and the Z chromosome, respectively. Surprisingly, Neoaves diversification comprises three adaptive radiations, an initial near-K-Pg super-radiation with highly discordant phylogenetic signals from near-simultaneous speciation events, followed by two post-K-Pg radiations of core landbirds and core waterbirds with much less pronounced ILS. We provide evidence that, given the extreme level of up to 100% ILS per branch in super-radiations, particularly rapid speciation events may neither resemble a fully bifurcating tree nor are they resolvable as such. As a consequence, their complex demographic history is more accurately represented as local networks within a species tree. A study of ancient genetic variation reveals genomic evidence for near-simultaneous speciation at the base of Neoaves (a group containing most modern birds), which temporally coincides with the mass extinction of nonavian dinosaurs and archaic birds. The rise of modern birds began after the mass extinction of nonavian dinosaurs and archaic birds at the Cretaceous-Paleogene (K-Pg) boundary, about 66 million years ago. This coincides with the super-rapid adaptive radiation of Neoaves (a group that contains most modern birds), which has been difficult to resolve even with whole genome sequences. We reconstructed the genealogical fates of thousands of rare genomic changes (insertions of selfish mobile elements called retrotransposons), a third of which were found to be affected by a phenomenon known as incomplete lineage sorting (ILS), namely a persistence of polymorphisms across multiple successive speciation events. Astoundingly, we found that near the K-Pg boundary, speciation events were accompanied by extreme levels of ILS, suggesting a near-simultaneous, star-like diversification process that appears plausible in the context of instantaneous niche availability that must have followed the K-Pg mass extinction. Our genome-scale results provide a population genomic explanation as to why some species radiations may be more complex than a fully bifurcating tree of life. We suggest that, under such circumstances, ILS bears witness to the biological limitation of phylogenetic resolution.
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Affiliation(s)
- Alexander Suh
- Department of Evolutionary Biology, Evolutionary Biology Centre (EBC), Uppsala University, Uppsala, Sweden
- * E-mail:
| | - Linnéa Smeds
- Department of Evolutionary Biology, Evolutionary Biology Centre (EBC), Uppsala University, Uppsala, Sweden
| | - Hans Ellegren
- Department of Evolutionary Biology, Evolutionary Biology Centre (EBC), Uppsala University, Uppsala, Sweden
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Eytan RI, Evans BR, Dornburg A, Lemmon AR, Lemmon EM, Wainwright PC, Near TJ. Are 100 enough? Inferring acanthomorph teleost phylogeny using Anchored Hybrid Enrichment. BMC Evol Biol 2015; 15:113. [PMID: 26071950 PMCID: PMC4465735 DOI: 10.1186/s12862-015-0415-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 06/08/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The past decade has witnessed remarkable progress towards resolution of the Tree of Life. However, despite the increased use of genomic scale datasets, some phylogenetic relationships remain difficult to resolve. Here we employ anchored phylogenomics to capture 107 nuclear loci in 29 species of acanthomorph teleost fishes, with 25 of these species sampled from the recently delimited clade Ovalentaria. Previous studies employing multilocus nuclear exon datasets have not been able to resolve the nodes at the base of the Ovalentaria tree with confidence. Here we test whether a phylogenomic approach will provide better support for these nodes, and if not, why this may be. RESULTS After using a novel method to account for paralogous loci, we estimated phylogenies with maximum likelihood and species tree methods using DNA sequence alignments of over 80,000 base pairs. Several key relationships within Ovalentaria are well resolved, including 1) the sister taxon relationship between Cichlidae and Pholidichthys, 2) a clade containing blennies, grammas, clingfishes, and jawfishes, and 3) monophyly of Atherinomorpha (topminnows, flyingfishes, and silversides). However, many nodes in the phylogeny associated with the early diversification of Ovalentaria are poorly resolved in several analyses. Through the use of rarefaction curves we show that limited phylogenetic resolution among the earliest nodes in the Ovalentaria phylogeny does not appear to be due to a deficiency of data, as average global node support ceases to increase when only 1/3rd of the sampled loci are used in analyses. Instead this lack of resolution may be driven by model misspecification as a Bayesian mixed model analysis of the amino acid dataset provided good support for parts of the base of the Ovalentaria tree. CONCLUSIONS Although it does not appear that the limited phylogenetic resolution among the earliest nodes in the Ovalentaria phylogeny is due to a deficiency of data, it may be that both stochastic and systematic error resulting from model misspecification play a role in the poor resolution at the base of the Ovalentaria tree as a Bayesian approach was able to resolve some of the deeper nodes, where the other methods failed.
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Affiliation(s)
- Ron I Eytan
- Department of Ecology & Evolutionary Biology and Peabody Museum of Natural History, Yale University, New Haven, 06520, CT, USA.
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, 77553, TX, USA.
| | - Benjamin R Evans
- Department of Ecology & Evolutionary Biology and Peabody Museum of Natural History, Yale University, New Haven, 06520, CT, USA.
| | - Alex Dornburg
- Department of Ecology & Evolutionary Biology and Peabody Museum of Natural History, Yale University, New Haven, 06520, CT, USA.
| | - Alan R Lemmon
- Department of Scientific Computing, Florida State University, Dirac Science Library, Tallahassee, 32306, FL, USA.
| | - Emily Moriarty Lemmon
- Department of Biological Science, Florida State University, Biomedical Research Facility, Tallahassee, 32306, FL, USA.
| | - Peter C Wainwright
- Department of Evolution & Ecology, University of California, One Shields Avenue, Davis, 95616, CA, USA.
| | - Thomas J Near
- Department of Ecology & Evolutionary Biology and Peabody Museum of Natural History, Yale University, New Haven, 06520, CT, USA.
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Tang Y, Yukawa T, Bateman RM, Jiang H, Peng H. Phylogeny and classification of the East Asian Amitostigma alliance (Orchidaceae: Orchideae) based on six DNA markers. BMC Evol Biol 2015; 15:96. [PMID: 26006185 PMCID: PMC4479074 DOI: 10.1186/s12862-015-0376-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 05/08/2015] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Tribe Orchideae dominates the orchid flora of the temperate Northern Hemisphere but its representatives in East Asia had been subject to less intensive phylogenetic study than those in Eurasia and North America. Although this situation was improved recently by the molecular phylogenetic study of Jin et al., comparatively few species were analyzed from the species-rich and taxonomically controversial East Asian Amitostigma alliance. Here, we present a framework nrITS tree of 235 accessions of Orchideae plus an in-depth analysis of 110 representative accessions, encompassing most widely recognized species within the alliance, to elucidate their relationships. RESULTS We used parsimony, likelihood and Bayesian approaches to generate trees from data for two nuclear (nrITS, low-copy Xdh) and four chloroplast (matK, psbA-trnH, trnL-F, trnS-trnG) markers. Nuclear and plastid data were analyzed separately due to a few hard incongruences that most likely reflect chloroplast capture. Our results suggest key phylogenetic placements for Sirindhornia and Brachycorythis, and confirm previous assertions that the Amitostigma alliance is monophyletic and sister to the Eurasian plus European clades of subtribe Orchidinae. Seven robust clades are evident within the alliance, but none corresponds precisely with any of the traditional genera; the smaller and more morphologically distinct genera Tsaiorchis, Hemipilia, Neottianthe and Hemipiliopsis are monophyletic but each is nested within a polyphyletic plexus of species attributed to either Ponerorchis or the most plesiomorphic genus, Amitostigma. Two early-divergent clades that escaped analysis by Jin et al. undermine their attempt to circumscribe an expanded monophyletic genus Ponerorchis. CONCLUSIONS We provide a new framework on the complex phylogenetic relationships between Amitostigma and other genera traditionally included in its alliance; based on which, we combine the entire Amitostigma alliance into a morphologically and molecularly circumscribed Amitostigma sensu latissimo that also contains seven molecularly circumscribed sections. Our molecular trees imply unusually high levels of morphological homoplasy, but these will need to be quantified via a future group-wide review of the alliance based on living plants if morphology is to be fully integrated into our classification.
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Affiliation(s)
- Ying Tang
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Tomohisa Yukawa
- Department of Botany, National Museum of Nature and Science, 4-1-1 Amakubo, Tsukuba, Ibaraki, 305-0005, Japan.
| | - Richard M Bateman
- Jodrell Laboratory, Royal Botanic Gardens Kew, Richmond, Surrey, TW9 3AB, UK.
| | - Hong Jiang
- Yunnan Academy of Forestry/Yunnan Laboratory for Conservation of Rare, Endangered and Endemic Forest Plants, State Forestry Administration, Kunming, 650204, Yunnan, China.
| | - Hua Peng
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, China.
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Dornburg A, Friedman M, Near TJ. Phylogenetic analysis of molecular and morphological data highlights uncertainty in the relationships of fossil and living species of Elopomorpha (Actinopterygii: Teleostei). Mol Phylogenet Evol 2015; 89:205-18. [PMID: 25899306 DOI: 10.1016/j.ympev.2015.04.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 03/31/2015] [Accepted: 04/07/2015] [Indexed: 02/05/2023]
Abstract
Elopomorpha is one of the three main clades of living teleost fishes and includes a range of disparate lineages including eels, tarpons, bonefishes, and halosaurs. Elopomorphs were among the first groups of fishes investigated using Hennigian phylogenetic methods and continue to be the object of intense phylogenetic scrutiny due to their economic significance, diversity, and crucial evolutionary status as the sister group of all other teleosts. While portions of the phylogenetic backbone for Elopomorpha are consistent between studies, the relationships among Albula, Pterothrissus, Notacanthiformes, and Anguilliformes remain contentious and difficult to evaluate. This lack of phylogenetic resolution is problematic as fossil lineages are often described and placed taxonomically based on an assumed sister group relationship between Albula and Pterothrissus. In addition, phylogenetic studies using morphological data that sample elopomorph fossil lineages often do not include notacanthiform or anguilliform lineages, potentially introducing a bias toward interpreting fossils as members of the common stem of Pterothrissus and Albula. Here we provide a phylogenetic analysis of DNA sequences sampled from multiple nuclear genes that include representative taxa from Albula, Pterothrissus, Notacanthiformes and Anguilliformes. We integrate our molecular dataset with a morphological character matrix that spans both living and fossil elopomorph lineages. Our results reveal substantial uncertainty in the placement of Pterothrissus as well as all sampled fossil lineages, questioning the stability of the taxonomy of fossil Elopomorpha. However, despite topological uncertainty, our integration of fossil lineages into a Bayesian time calibrated framework provides divergence time estimates for the clade that are consistent with previously published age estimates based on the elopomorph fossil record and molecular estimates resulting from traditional node-dating methods.
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Affiliation(s)
- Alex Dornburg
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06520, USA.
| | - Matt Friedman
- Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK
| | - Thomas J Near
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06520, USA; Peabody Museum of Natural History, Yale University, New Haven, CT 06520, USA
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Building the avian tree of life using a large-scale, sparse supermatrix. Mol Phylogenet Evol 2015; 84:53-63. [DOI: 10.1016/j.ympev.2014.12.003] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 12/03/2014] [Accepted: 12/05/2014] [Indexed: 11/20/2022]
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Sun M, Soltis DE, Soltis PS, Zhu X, Burleigh JG, Chen Z. Deep phylogenetic incongruence in the angiosperm clade Rosidae. Mol Phylogenet Evol 2015; 83:156-66. [DOI: 10.1016/j.ympev.2014.11.003] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 11/01/2014] [Accepted: 11/05/2014] [Indexed: 10/24/2022]
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Huang DI, Hefer CA, Kolosova N, Douglas CJ, Cronk QCB. Whole plastome sequencing reveals deep plastid divergence and cytonuclear discordance between closely related balsam poplars, Populus balsamifera and P. trichocarpa (Salicaceae). THE NEW PHYTOLOGIST 2014; 204:693-703. [PMID: 25078531 DOI: 10.1111/nph.12956] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Accepted: 06/16/2014] [Indexed: 05/03/2023]
Abstract
As molecular phylogenetic analyses incorporate ever-greater numbers of loci, cases of cytonuclear discordance - the phenomenon in which nuclear gene trees deviate significantly from organellar gene trees - are being reported more frequently. Plant examples of topological discordance, caused by recent hybridization between extant species, are well known. However, examples of branch-length discordance are less reported in plants relative to animals. We use a combination of de novo assembly and reference-based mapping using short-read shotgun sequences to construct a robust phylogeny of the plastome for multiple individuals of all the common Populus species in North America. We demonstrate a case of strikingly high plastome divergence, in contrast to little nuclear genome divergence, in two closely related balsam poplars, Populus balsamifera and Populus trichocarpa (Populus balsamifera ssp. trichocarpa). Previous studies with nuclear loci indicate that the two species (or subspecies) diverged since the late Pleistocene, whereas their plastomes indicate deep divergence, dating to at least the Pliocene (6-7 Myr ago). Our finding is in marked contrast to the estimated Pleistocene divergence of the nuclear genomes, previously calculated at 75 000 yr ago, suggesting plastid capture from a 'ghost lineage' of a now-extinct North American poplar.
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Affiliation(s)
- Daisie I Huang
- Department of Botany, University of British Columbia, 3529-6270 University Blvd, Vancouver, BC, V6T 1Z4, Canada
- Beaty Biodiversity Research Centre, University of British Columbia, Main Mall, Vancouver, BC, V6T 1Z4, Canada
| | - Charles A Hefer
- Department of Botany, University of British Columbia, 3529-6270 University Blvd, Vancouver, BC, V6T 1Z4, Canada
- Beaty Biodiversity Research Centre, University of British Columbia, Main Mall, Vancouver, BC, V6T 1Z4, Canada
| | - Natalia Kolosova
- Department of Botany, University of British Columbia, 3529-6270 University Blvd, Vancouver, BC, V6T 1Z4, Canada
| | - Carl J Douglas
- Department of Botany, University of British Columbia, 3529-6270 University Blvd, Vancouver, BC, V6T 1Z4, Canada
| | - Quentin C B Cronk
- Department of Botany, University of British Columbia, 3529-6270 University Blvd, Vancouver, BC, V6T 1Z4, Canada
- Beaty Biodiversity Research Centre, University of British Columbia, Main Mall, Vancouver, BC, V6T 1Z4, Canada
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Gatesy J, Springer MS. Phylogenetic analysis at deep timescales: Unreliable gene trees, bypassed hidden support, and the coalescence/concatalescence conundrum. Mol Phylogenet Evol 2014; 80:231-66. [DOI: 10.1016/j.ympev.2014.08.013] [Citation(s) in RCA: 239] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Revised: 07/26/2014] [Accepted: 08/10/2014] [Indexed: 11/16/2022]
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A time-calibrated, multi-locus phylogeny of piranhas and pacus (Characiformes: Serrasalmidae) and a comparison of species tree methods. Mol Phylogenet Evol 2014; 81:242-57. [PMID: 25261120 DOI: 10.1016/j.ympev.2014.06.018] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 06/17/2014] [Accepted: 06/18/2014] [Indexed: 12/13/2022]
Abstract
The phylogeny of piranhas, pacus, and relatives (family Serrasalmidae) was inferred on the basis of DNA sequences from eleven gene fragments that include the mitochondrial control region plus 10 nuclear genes (two exons and eight introns). The new data were obtained for a representative sampling of 53 specimens, collected from all major South American rivers, accounting for over 40% of the valid species and all genera excluding Utiaritichthys. Two fossil calibration points and relaxed-clock Bayesian analyses were used to estimate the timing of diversification. The new multilocus dataset also is used to compare several species-tree approaches against the results obtained using the concatenated alignment analyzed under maximum likelihood and Bayesian inference. Individual gene trees showed substantial topological discordance, but analyses based on concatenation and Bayesian and maximum likelihood-based species trees approaches converged onto a single phylogeny. The resulting phylogenetic hypothesis is robust and supports a division of the family into three major clades, consistent with previous results based on mitochondrial DNA alone. The earliest branching event separated a "pacu" clade (Colossoma, Mylossoma and Piaractus) from the rest of the family in the Late Cretaceous (over 68 Ma). The other two clades, that contain most of the diversity, are formed by the "true piranhas" (Metynnis, Pygopristis, Pygocentrus, Pristobrycon, Catoprion, and Serrasalmus) and the Myleus-like pacus (the Myleus clade). The "true" piranha clade originated during the Eocene (∼53 Ma) but the most recent diversification of flesh-eating piranhas within the genera Serrasalmus and Pygocentrus did not start until the Miocene (∼17 Ma). A comparison of species tree approaches indicates that most methods tested are consistent with results obtained by concatenation, suggesting that the gene-tree incongruence observed is mild and will not produce misleading results under simple concatenation analysis. Non-monophyly of several genera (Pristobrycon, Tometes, Myloplus, Mylesinus) and putative species (Serrasalmus rhombeus) was obtained, suggesting that further study of this family is necessary.
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Phylogenetic signal detection from an ancient rapid radiation: Effects of noise reduction, long-branch attraction, and model selection in crown clade Apocynaceae. Mol Phylogenet Evol 2014; 80:169-85. [PMID: 25109653 DOI: 10.1016/j.ympev.2014.07.020] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 07/18/2014] [Accepted: 07/21/2014] [Indexed: 11/21/2022]
Abstract
Crown clade Apocynaceae comprise seven primary lineages of lianas, shrubs, and herbs with a diversity of pollen aggregation morphologies including monads, tetrads, and pollinia, making them an ideal group for investigating the evolution and function of pollen packaging. Traditional molecular systematic approaches utilizing small amounts of sequence data have failed to resolve relationships along the spine of the crown clade, a likely ancient rapid radiation. The previous best estimate of the phylogeny was a five-way polytomy, leaving ambiguous the homology of aggregated pollen in two major lineages, the Periplocoideae, which possess pollen tetrads, and the milkweeds (Secamonoideae plus Asclepiadoideae), which possess pollinia. To assess whether greatly increased character sampling would resolve these relationships, a plastome sequence data matrix was assembled for 13 taxa of Apocynaceae, including nine newly generated complete plastomes, one partial new plastome, and three previously reported plastomes, collectively representing all primary crown clade lineages and outgroups. The effects of phylogenetic noise, long-branch attraction, and model selection (linked versus unlinked branch lengths among data partitions) were evaluated in a hypothesis-testing framework based on Shimodaira-Hasegawa tests. Discrimination among alternative crown clade resolutions was affected by all three factors. Exclusion of the noisiest alignment positions and topologies influenced by long-branch attraction resulted in a trichotomy along the spine of the crown clade consisting of Rhabdadenia+the Asian clade, Baisseeae+milkweeds, and Periplocoideae+the New World clade. Parsimony reconstruction on all optimal topologies after noise exclusion unambiguously supports parallel evolution of aggregated pollen in Periplocoideae (tetrads) and milkweeds (pollinia). Our phylogenomic approach has greatly advanced the resolution of one of the most perplexing radiations in Apocynaceae, providing the basis for study of convergent floral morphologies and their adaptive value.
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Huang H, Tran LAP, Knowles LL. Do estimated and actual species phylogenies match? Evaluation of East African cichlid radiations. Mol Phylogenet Evol 2014; 78:56-65. [PMID: 24837624 DOI: 10.1016/j.ympev.2014.05.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 05/02/2014] [Accepted: 05/06/2014] [Indexed: 10/25/2022]
Abstract
A large number of published phylogenetic estimates are based on a single locus or the concatenation of multiple loci, even though genealogies of single or concatenated loci may not accurately reflect the true history of species diversification (i.e., the species tree). The increased availability of genomic data, coupled with new computational methods, improves resolution of species relationships beyond what was possible in the past. Such developments will no doubt benefit future phylogenetic studies. It remains unclear how robust phylogenies that predate these developments (i.e., the bulk of phylogenetic studies) are to departures from the assumption of strict gene tree-species tree concordance. Here, we present a parametric bootstrap (PBST) approach that assesses the reliability of past phylogenetic estimates in which gene tree-species tree discord was ignored. We focus on a universal cause of discord-the random loss of gene lineages from genetic drift-and apply the method in a meta-analysis of East African cichlids, a group encompassing historical scenarios that are particularly challenging for phylogenetic estimation. Although we identify some evolutionary relationships that are robust to gene tree discord, many past phylogenetic estimates of cichlids are not. We discuss the utility of the PBST method for evaluating the robustness of gene tree-based phylogenetic estimations in general as well as for testing the clade-specific performance of species tree estimation methods and designing sampling strategies that increase the accuracy of estimated species relationships.
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Affiliation(s)
- Huateng Huang
- Department of Ecology and Evolutionary Biology, Museum of Zoology, University of Michigan, Ann Arbor, MI 48109-1079, USA.
| | - Lucy A P Tran
- Department of Ecology and Evolutionary Biology, Museum of Zoology, University of Michigan, Ann Arbor, MI 48109-1079, USA.
| | - L Lacey Knowles
- Department of Ecology and Evolutionary Biology, Museum of Zoology, University of Michigan, Ann Arbor, MI 48109-1079, USA.
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Baker AJ, Haddrath O, McPherson JD, Cloutier A. Genomic support for a moa-tinamou clade and adaptive morphological convergence in flightless ratites. Mol Biol Evol 2014; 31:1686-96. [PMID: 24825849 DOI: 10.1093/molbev/msu153] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
One of the most startling discoveries in avian molecular phylogenetics is that the volant tinamous are embedded in the flightless ratites, but this topology remains controversial because recent morphological phylogenies place tinamous as the closest relative of a monophyletic ratite clade. Here, we integrate new phylogenomic sequences from 1,448 nuclear DNA loci totaling almost 1 million bp from the extinct little bush moa, Chilean tinamou, and emu with available sequences from ostrich, elegant crested tinamou, four neognaths, and the green anole. Phylogenetic analysis using standard homogeneous models and heterogeneous models robust to common topological artifacts recovered compelling support for ratite paraphyly with the little bush moa closest to tinamous within ratites. Ratite paraphyly was further corroborated by eight independent CR1 retroposon insertions. Analysis of morphological characters reinterpreted on a 27-gene paleognath topology indicates that many characters are convergent in the ratites, probably as the result of adaptation to a cursorial life style.
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Affiliation(s)
- Allan J Baker
- Department of Natural History, Royal Ontario Museum, Toronto, Ontario, CanadaDepartment of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario, Canada
| | - Oliver Haddrath
- Department of Natural History, Royal Ontario Museum, Toronto, Ontario, Canada
| | | | - Alison Cloutier
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario, Canada
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Zhong B, Liu L, Penny D. The multispecies coalescent model and land plant origins: a reply to Springer and Gatesy. TRENDS IN PLANT SCIENCE 2014; 19:270-272. [PMID: 24641876 DOI: 10.1016/j.tplants.2014.02.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Accepted: 02/20/2014] [Indexed: 06/03/2023]
Affiliation(s)
- Bojian Zhong
- Institute of Fundamental Sciences, Massey University, Palmerston North, New Zealand.
| | - Liang Liu
- Department of Statistics and Institute of Bioinformatics, University of Georgia, Athens, GA 30606, USA.
| | - David Penny
- Institute of Fundamental Sciences, Massey University, Palmerston North, New Zealand
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Kimball RT, Braun EL. Does more sequence data improve estimates of galliform phylogeny? Analyses of a rapid radiation using a complete data matrix. PeerJ 2014; 2:e361. [PMID: 24795852 PMCID: PMC4006227 DOI: 10.7717/peerj.361] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Accepted: 04/03/2014] [Indexed: 01/19/2023] Open
Abstract
The resolution of rapid evolutionary radiations or "bushes" in the tree of life has been one of the most difficult and interesting problems in phylogenetics. The avian order Galliformes appears to have undergone several rapid radiations that have limited the resolution of prior studies and obscured the position of taxa important both agriculturally and as model systems (chicken, turkey, Japanese quail). Here we present analyses of a multi-locus data matrix comprising over 15,000 sites, primarily from nuclear introns but also including three mitochondrial regions, from 46 galliform taxa with all gene regions sampled for all taxa. The increased sampling of unlinked nuclear genes provided strong bootstrap support for all but a small number of relationships. Coalescent-based methods to combine individual gene trees and analyses of datasets that are independent of published data indicated that this well-supported topology is likely to reflect the galliform species tree. The inclusion or exclusion of mitochondrial data had a limited impact upon analyses upon analyses using either concatenated data or multispecies coalescent methods. Some of the key phylogenetic findings include support for a second major clade within the core phasianids that includes the chicken and Japanese quail and clarification of the phylogenetic relationships of turkey. Jackknifed datasets suggested that there is an advantage to sampling many independent regions across the genome rather than obtaining long sequences for a small number of loci, possibly reflecting the differences among gene trees that differ due to incomplete lineage sorting. Despite the novel insights we obtained using this increased sampling of gene regions, some nodes remain unresolved, likely due to periods of rapid diversification. Resolving these remaining groups will likely require sequencing a very large number of gene regions, but our analyses now appear to support a robust backbone for this order.
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Affiliation(s)
- Rebecca T Kimball
- Department of Biology, University of Florida , Gainesville, FL , USA
| | - Edward L Braun
- Department of Biology, University of Florida , Gainesville, FL , USA
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Abstract
PREMISE OF THE STUDY The Lamiidae, a clade composed of approximately 15% of all flowering plants, consists of five orders: Boraginales, Gentianales, Garryales, Lamiales, and Solanales; and four families unplaced in an order: Icacinaceae, Metteniusiaceae, Oncothecaceae, and Vahliaceae. Our understanding of the phylogenetic relationships of Lamiidae has improved significantly in recent years, however, relationships among the orders and unplaced families of the clade remain partly unresolved. Here, we present a phylogenetic analysis of the Lamiidae based on an expanded sampling, including all families together, for the first time, in a single phylogenetic analyses. METHODS Phylogenetic analyses were conducted using maximum parsimony, maximum likelihood, and Bayesian approaches. Analyses included nine plastid regions (atpB, matK, ndhF, psbBTNH, rbcL, rps4, rps16, trnL-F, and trnV-atpE) and the mitochondrial rps3 region, and 129 samples representing all orders and unplaced families of Lamiidae. KEY RESULTS Maximum Likelihood (ML) and Bayesian trees provide good support for Boraginales sister to Lamiales, with successive outgroups (Solanales + Vahlia) and Gentianales, together comprising the core Lamiidae. Early branching patterns are less well supported, with Garryales only poorly supported as sister to the above 'core' and a weakly supported clade composed of Icacinaceae, Metteniusaceae, and Oncothecaceae sister to all other Lamiidae. CONCLUSIONS Our phylogeny of Lamiidae reveals increased resolution and support for internal relationships that have remained elusive. Within Lamiales, greater resolution also is obtained, but some family interrelationships remain a challenge.
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