Dataset Information

Misleading fruits: The non-monophyly of Pseudopiptadenia and Pityrocarpa supports generic re-circumscriptions and a new genus within mimosoid legumes.

ABSTRACT: Generic delimitation in Piptadenia and allies (mimosoid legumes) has been in a state of flux, particularly caused by over-reliance on fruit and seed morphology to segregate species out of Piptadenia into the genera Parapiptadenia, Pityrocarpa and Pseudopiptadenia. Although supporting their segregation from Piptadenia, previous phylogenetic analyses suggested that some of these segregated genera are not monophyletic. Here, we test the monophyly of Parapiptadenia, Pityrocarpa and Pseudopiptadenia with dense taxon sampling across these genera, including the type species of each genus. Our analysis recovers Parapitadenia as monophyletic, but places Pseudopiptadenia species in two distinct lineages, one of which includes all three species of Pityrocarpa. Given that the type species of both Pseudopiptadenia and Pityrocarpa are nested in the same clade, we subsume Pseudopiptadenia under the older name Pityrocarpa. The remaining Pseudopiptadenia species are assigned to the new genus Marlimorimia. Alongside high molecular phylogenetic support, recognition of Parapiptadenia, Pityrocarpa and Marlimorimia as distinct genera is also supported by combinations of morphological traits, several of which were previously overlooked.

SUBMITTER: Borges LM

PROVIDER: S-EPMC9849003 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Misleading fruits: The non-monophyly of Pseudopiptadenia and Pityrocarpa supports generic re-circumscriptions and a new genus within mimosoid legumes.

Borges Leonardo M LM Inglis Peter W PW Simon Marcelo F MF Ribeiro Pétala Gomes PG de Queiroz Luciano P LP

PhytoKeys 20220822

Generic delimitation in Piptadenia and allies (mimosoid legumes) has been in a state of flux, particularly caused by over-reliance on fruit and seed morphology to segregate species out of Piptadenia into the genera Parapiptadenia, Pityrocarpa and Pseudopiptadenia. Although supporting their segregation from Piptadenia, previous phylogenetic analyses suggested that some of these segregated genera are not monophyletic. Here, we test the monophyly of Para ...[more]

PMID: 36762012

Similar Datasets

Project description:Recent phylogenomic analyses of 997 nuclear genes support the long-held view that the genus Entada is congeneric with Elephantorrhiza. Entada is resolved as monophyletic only if the genus Elephantorrhiza is subsumed within it. The two genera were distinguished solely by relatively minor differences in the mode of dehiscence of the fruits (a craspedium separating into one-seeded endocarp segments in Entada versus a craspedium with the whole fruit valve breaking away from the persistent replum in Elephantorrhiza) and the craspedial fruit type itself provides a shared synapomorphy for the re-circumscribed Entada. Here, we provide a synopsis of Entada, including 11 new combinations in total, for the eight species, one subspecies and one variety previously placed in Elephantorrhiza, as well as a new combination for a subspecies of Entadarheedei Spreng. not previously dealt with when Entadapursaetha DC. was placed in synonymy. These new combinations are: Entadaburkei (Benth.) S.A. O'Donnell & G.P. Lewis, comb. nov.; Entadaelephantina (Burch.) S.A. O'Donnell & G.P. Lewis, comb. nov.; Entadagoetzei (Harms) S.A. O'Donnell & G.P. Lewis, comb. nov.; Entadagoetzeisubsp.lata (Brenan & Brummitt) S.A. O'Donnell & G.P. Lewis, comb. nov.; Entadaobliqua (Burtt Davy) S.A. O'Donnell & G.P. Lewis, comb. nov.; Entadapraetermissa (J.H. Ross) S.A. O'Donnell & G.P. Lewis, comb. nov.; Entadarangei (Harms) S.A. O'Donnell & G.P. Lewis, comb. nov.; Entadarheedeisubsp.sinohimalensis (Grierson & D.G. Long) S.A. O'Donnell & G.P. Lewis, comb. nov.; Entadaschinziana (Dinter) S.A. O'Donnell & G.P. Lewis, comb. nov.; Entadawoodii (E. Phillips) S.A. O'Donnell & G.P. Lewis, comb. nov.; and Entadawoodiivar.pubescens (E. Phillips) S.A. O'Donnell & G.P. Lewis, comb. nov. We provide a revised circumscription of the genus Entada which now comprises 40 species distributed pantropically, with the greatest diversity of species in tropical Africa. We present a complete taxonomic synopsis, including a map showing the global distribution of the genus and photographs showing variation amongst species in habit, foliage, flowers and fruits. A short discussion about extrafloral nectaries, mainly observed in the Madagascan species, is presented.

Project description:Following recent mimosoid phylogenetic and phylogenomic studies demonstrating the non-monophyly of the genus Albizia, we present a new molecular phylogeny focused on the neotropical species in the genus, with much denser taxon sampling than previous studies. Our aims were to test the monophyly of the neotropical section Arthrosamanea, resolve species relationships, and gain insights into the evolution of fruit morphology. We perform a Bayesian phylogenetic analysis of sequences of nuclear internal and external transcribed spacer regions and trace the evolution of fruit dehiscence and lomentiform pods. Our results find further support for the non-monophyly of the genus Albizia, and confirm the previously proposed segregation of Hesperalbizia, Hydrochorea, Balizia and Pseudosamanea. All species that were sampled from section Arthrosamanea form a clade that is sister to a clade composed of Jupunba, Punjuba, Balizia and Hydrochorea. We find that lomentiform fruits are independently derived from indehiscent septate fruits in both Hydrochorea and section Arthrosamanea. Our results show that morphological adaptations to hydrochory, associated with shifts into seasonally flooded habitats, have occurred several times independently in different geographic areas and different lineages within the ingoid clade. This suggests that environmental conditions have likely played a key role in the evolution of fruit types in Albizia and related genera. We resurrect the name Pseudalbizzia to accommodate the species of section Arthrosamanea, except for two species that were not sampled here but have been shown in other studies to be more closely related to other ingoid genera and we restrict the name Albizia s.s. to the species from Africa, Madagascar, Asia, Australia, and the Pacific. Twenty-one new nomenclatural combinations in Pseudalbizzia are proposed, including 16 species and 5 infraspecific varietal names. In addition to the type species Pseudalbizziaberteroana, the genus has 17 species distributed across tropical regions of the Americas, including the Caribbean. Finally, a new infrageneric classification into five sections is proposed and a distribution map of the species of Pseudalbizzia is presented.

Dataset Information

Misleading fruits: The non-monophyly of Pseudopiptadenia and Pityrocarpa supports generic re-circumscriptions and a new genus within mimosoid legumes.

Publications

Misleading fruits: The non-monophyly of <i>Pseudopiptadenia</i> and <i>Pityrocarpa</i> supports generic re-circumscriptions and a new genus within mimosoid legumes.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets

Dataset Information

Misleading fruits: The non-monophyly of Pseudopiptadenia and Pityrocarpa supports generic re-circumscriptions and a new genus within mimosoid legumes.

Publications

﻿Misleading fruits: The non-monophyly of <i>Pseudopiptadenia</i> and <i>Pityrocarpa</i> supports generic re-circumscriptions and a new genus within mimosoid legumes.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets

Misleading fruits: The non-monophyly of <i>Pseudopiptadenia</i> and <i>Pityrocarpa</i> supports generic re-circumscriptions and a new genus within mimosoid legumes.