Major Clades of Australasian Rutoideae (Rutaceae) Based on rbcL and atpB Sequences

Bayly, Michael J.; Holmes, Gareth D.; Forster, Paul I.; Cantrill, David J.; Ladiges, Pauline Y.

doi:10.1371/journal.pone.0072493

Cited by 42 publications

(73 citation statements)

References 107 publications

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“…Acronychia belongs to a clade of mainly Australasian rain forest genera in the citrus family, Rutaceae [1, 2]. The 49 accepted species in the genus may be shrubs or trees up to 30 m tall [3, 4, 5] with leaves simple or trifoliolate (both character states may occur within a single species), flowers tetramerous with eight stamens, and the gynoecium developing into a syncarpous (sometimes only at base) and drupaceous fruit.…”

Section: Introductionmentioning

confidence: 99%

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Phylogeny of Acronychia (Rutaceae) and First Insights into Its Historical Biogeography and the Evolution of Fruit Characters

et al. 2015

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BackgroundThe genus Acronychia (Citrus family, Rutaceae) contains 49 species of trees and shrubs that are found mainly in rain forest. The genus has a large distributional range from mainland southern Asia to Australia and New Caledonia, but most species are endemic to either New Guinea or Australia. This study aimed to provide the first detailed molecular phylogeny of Acronychia and use it to test the taxonomic value of fruit morphological characters, and infer the historical biogeography of the genus.MethodologyPhylogenetic analyses (Bayesian Inference, Maximum Likelihood) were undertaken on nucleotide sequence data from two plastid (psbA-trnH, trnL-trnF) and three nuclear markers (ETS, ITS, NIAi3) from 29 Acronychia species (59% of the genus) and representatives of related genera.Results and ConclusionsThe results indicate that the South-East Asian genus Maclurodendron is nested phylogenetically within Acronychia and must be synonymized to render Acronychia monophyletic. Fruit morphological characters have been used previously to infer relationships within Acronychia and our analyses show that these characters are informative for some subclades but are homoplasious for the group as a whole. Apocarpous fruits are the ancestral state in Acronychia and subapocarpous and fully syncarpous fruits are derived. The unisexual flowers of Maclurodendron are derived from bisexual flowers, which are found in all species of Acronychia as well as its relatives. Acronychia probably first evolved on Australia with range expansion to New Guinea via stepping-stone dispersal or direct land connections within the Sahul Shelf, followed by two independent dispersals to areas west of New Guinea. Most species of Acronychia occur in either Australia or New Guinea, but no species occurs in both regions. This is surprising given the close proximity of the landmasses, but might be explained by ecological factors.

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Section: Introductionmentioning

confidence: 99%

“…In addition to Euodia and Melicope , a group of about 30 genera mainly from Asia and Australia, the so-called Euodia -alliance, are possible close relatives of Acronychia [31]. Most of these genera have been sampled in recent molecular analyses [1, 2], which showed that the Euodia -alliance is not monophyletic.…”

Section: Introductionmentioning

confidence: 99%

Phylogeny of Acronychia (Rutaceae) and First Insights into Its Historical Biogeography and the Evolution of Fruit Characters

et al. 2015

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“…Based on this analysis six species of Zieria form a strongly supported clade with Neobrynesia (BS 94%). The monophyly of Zieria is also suggest by Bayly et al (2013) and Appelhans et al (2014). Bayly et al (2013) using only rbcL and atpB also included Zieria chevalieri from New Caledonian, the only disjunct species within Zieria to support not only the monophyly of Zieria but also the outgroup relationship with Neobrynesia .…”

Section: Discussionmentioning

confidence: 90%

“…A subfamilial phylogenetic analysis was completed for Rutaceae by Chase et al (1999), Groppo et al (2008, 2012), Poon et al (2007), Bayly et al (2013), and Morton and Telmer (2014), using evidence from rbcL and atpB , rps16 and trnL-trnF and trnL-F , xdh , and ITS sequence variation. All of the above authors, except for Bayly et al (2013), did not include taxa from either Zieria or Neobyrnesia (sister genus to Zieria ).…”

Section: Introductionmentioning

confidence: 99%

“…All of the above authors, except for Bayly et al (2013), did not include taxa from either Zieria or Neobyrnesia (sister genus to Zieria ). Bayly et al (2013) only included three Zieria species and Neorbyrnesia , and therefore, their relationships to each other and to other taxa of Rutaceae based on molecular techniques need to be examined for the degree of congruence with morphological characters. Of the 32 species used in this study, 21 are considered endangered or vulnerable according to the Environment Protection and Biodiversity Conservation (EPBC) Act (http://www.environment.gov.au/cgi-bin/sprat/public/spratlookupspecies.pl?name=zieria&searchtype=Wildcard).…”

Section: Introductionmentioning

confidence: 99%

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Phylogenetic relationships of Zieria (Rutaceae) inferred from chloroplast, nuclear, and morphological data

Morton¹

2015

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Zieria Sm. (Rutaceae, Boronieae) is predominantly native to eastern Australia except for one species, which is endemic to New Caledonia. For this study, sequence data of two non-coding chloroplast regions (trnL-trnF, and rpl32-trnL), one nuclear region (ITS region) and various morphological characters, based on Armstrong’s (2002) taxonomic revision of Zieria, from 32 of the 42 described species of Zieria were selected to study the phylogenetic relationships within this genus. Zieria was supported as a monophyletic group in both independent and combined analyses herein (vs. Armstrong). On the basis of Armstrong’s (2002) non-molecular phylogenetic study, six major taxon groups were defined for Zieria. The Maximum-parsimony and the Bayesian analyses of the combined morphological and molecular datasets indicate a lack of support for any of these six major taxon groups. On the basis of the combined Bayesian analysis consisting of molecular and morphological characters, eight major taxon groups are described for Zieria: 1. Zieria cytisoides group, 2. Zieria granulata group, 3. Zieria laevigata group, 4. Zieria smithii group, 5. Zieria aspalathoides group, 6. Zieria furfuracea group, 7. Zieria montana group, and 8. Zieria robusta group. These informal groups, except for of the groups Zieria robusta and Zieria cytisoides, correspond to the clades with posterior probability values of 100.

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Boronia (Rutaceae) is polyphyletic: Reinstating Cyanothamnus and the problems associated with inappropriately defined outgroups

Duretto

Heslewood

Bayly

2020

TAXON

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The monophyly of Boronia (Rutaceae) was tested using 134 accessions of 120 species belonging to 39 genera from subfamily Amyridoideae. Taxa included representatives of all eight sections of Boronia plus species of most genera in the two main clades related to Boronia that had been identified by earlier studies. These samples included a good representation of genera from both rainforest and sclerophyllous biomes. Maximum parsimony and Bayesian inference analyses were performed using three plastid markers (psbA‐trnH, trnL‐trnF, rbcL) and two nuclear ribosomal markers (ITS, ETS). Separate analyses of plastid and nuclear sequences using either maximum parsimony or Bayesian inference analyses recovered similar topologies. Apart from Boronia, the broad generic relationships of previous analyses were largely supported. Boronia is polyphyletic with section Cyanothamnus being more closely related to a large clade containing genera found in rainforest, including Melicope, Acronychia and their relatives. The remaining seven sections of Boronia formed a strongly supported and isolated group. Boronia sensu stricto is sister to a clade containing the Cyanothamnus‐Melicope‐Acronychia clade plus a clade containing Euodia, Zieria and other small genera found in rainforest or sclerophyllous communities. Issues with circumscriptions of ingroups and outgroups for previous analyses of Boronia and the complex relationship between Australasian genera found in rainforest and sclerophyllous communities are both discussed. Cyanothamnus is reinstated at generic level. Appropriate nomenclatural changes are made to transfer all currently recognised series, species, subspecies and varieties of Boronia sect. Cyanothamnus to the genus Cyanothamnus.

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Major Clades of Australasian Rutoideae (Rutaceae) Based on rbcL and atpB Sequences

Cited by 42 publications

References 107 publications

Phylogeny of Acronychia (Rutaceae) and First Insights into Its Historical Biogeography and the Evolution of Fruit Characters

Phylogeny of Acronychia (Rutaceae) and First Insights into Its Historical Biogeography and the Evolution of Fruit Characters

Phylogenetic relationships of Zieria (Rutaceae) inferred from chloroplast, nuclear, and morphological data

Boronia (Rutaceae) is polyphyletic: Reinstating Cyanothamnus and the problems associated with inappropriately defined outgroups

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