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Article: Delimiting the genera of the Ficinia Clade (Cypereae, Cyperaceae) based on molecular phylogenetic data.

Muasya, A Muthama / Larridon, Isabel

2021 Volume 9, Page(s) e10737

Abstract: Generic delimitations in the Ficinia Clade of tribe Cypereae are revisited. In particular, we aim to establish the placement of annual species currently included ... ...

Abstract	Generic delimitations in the Ficinia Clade of tribe Cypereae are revisited. In particular, we aim to establish the placement of annual species currently included in
Language	English
Publishing date	2021-01-26
Publishing country	United States
Document type	Journal Article
ZDB-ID	2703241-3
ISSN	2167-8359
ISSN	2167-8359
DOI	10.7717/peerj.10737
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: A monograph of the African and Madagascan species of

Griffiths, Megan / Ralimanana, Hélène / Rakotonasolo, Franck / Larridon, Isabel

Kew bulletin

2022 Volume 77, Issue 4, Page(s) 819–850

Abstract: ... ...

Abstract	Cyperus
Language	English
Publishing date	2022-10-26
Publishing country	England
Document type	Journal Article
ZDB-ID	400069-9
ISSN	1874-933X ; 0075-5974
ISSN (online)	1874-933X
ISSN	0075-5974
DOI	10.1007/s12225-022-10058-9
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Genetic patterns of Magnolia in the Lesser Antilles: Stepwise colonisation leading to highly inbred island ‘populations’

Veltjen, Emily / Tamaki, Ichiro / Asselman, Pieter / Goetghebeur, Paul / Samain, Marie‐Stéphanie / Larridon, Isabel

Journal of Biogeography. 2023 Jan., v. 50, no. 1 p.130-144

2023

Abstract: AIM: Islands are ‘nature's laboratories of evolution’. Most island biogeographical studies have focussed on remote volcanic island chains. Here, we challenge island biogeographical patterns using a slowly evolving recent colonist present on five islands ... ...

Abstract	AIM: Islands are ‘nature's laboratories of evolution’. Most island biogeographical studies have focussed on remote volcanic island chains. Here, we challenge island biogeographical patterns using a slowly evolving recent colonist present on five islands in a nonlinear chronosequence island chain. LOCATION: The Lesser Antilles (Caribbean). TAXON: Magnolia dodecapetala (Magnoliaceae). METHODS: Genetic diversity was characterised using Sanger sequencing of 21 individuals amplified for 11 DNA markers, plus microsatellite data of 195 individuals genotyped with 19 simple sequence repeat (SSR) markers. Sanger sequencing data were used to construct a Bayesian phylogenetic hypothesis, while SSR markers were used to run approximate Bayesian computation (ABC) demographic analyses and calculate population statistics. RESULTS: Both types of molecular data support stepwise colonisation, decoupled from known island ages. The ABC analyses support a north to south migration while the Sanger sequencing data indicate a mixture of island progression rule and stepping stone dispersal. The SSR data show strong genetic structuring per island and significant inbreeding in all populations except in Saint Lucia. The lowest genetic diversity is found in the population from Saint Vincent. A high amount of genetic linkage occurs in a subpopulation from Dominica. MAIN CONCLUSIONS: Biogeographical patterns in the complex geological setting of the Lesser Antilles are uncovered using a slowly evolving study species. All genetic data support treating each island as distinct Management Units for conservation and call for a re‐evaluation of the species limits. Inbreeding threatens the survival of island populations and the populations of Saint Vincent and Dominica represent conservation priorities.
Keywords	Bayesian theory ; DNA ; Magnolia ; biogeography ; chronosequences ; genetic variation ; geographical distribution ; microsatellite repeats ; phylogeny ; volcanic islands ; Caribbean ; Dominica ; Saint Lucia
Language	English
Dates of publication	2023-01
Size	p. 130-144.
Publishing place	John Wiley & Sons, Ltd
Document type	Article ; Online
Note	JOURNAL ARTICLE
ZDB-ID	188963-1
ISSN	0305-0270
ISSN	0305-0270
DOI	10.1111/jbi.14514
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Phylogenomics sheds new light on the drivers behind a long‐lasting systematic riddle: the figwort family Scrophulariaceae

Villaverde, Tamara / Larridon, Isabel / Shah, Toral / Fowler, Rachael M. / Chau, John H. / Olmstead, Richard G. / Sanmartín, Isabel

New Phytologist. 2023 Nov., v. 240, no. 4 p.1601-1615

2023

Abstract: The figwort family, Scrophulariaceae, comprises c. 2000 species whose evolutionary relationships at the tribal level have proven difficult to resolve, hindering our ability to understand their origin and diversification. We designed a specific probe kit ... ...

Abstract	The figwort family, Scrophulariaceae, comprises c. 2000 species whose evolutionary relationships at the tribal level have proven difficult to resolve, hindering our ability to understand their origin and diversification. We designed a specific probe kit for Scrophulariaceae, targeting 849 nuclear loci and obtaining plastid regions as by‐products. We sampled c. 87% of the genera described in the family and use the nuclear dataset to estimate evolutionary relationships, timing of diversification, and biogeographic patterns. Ten tribes, including two new tribes, Androyeae and Camptolomeae, are supported, and the phylogenetic positions of Androya, Camptoloma, and Phygelius are unveiled. Our study reveals a major diversification at c. 60 million yr ago in some Gondwanan landmasses, where two different lineages diversified, one of which gave rise to nearly 81% of extant species. A Southern African origin is estimated for most modern‐day tribes, with two exceptions, the American Leucophylleae, and the mainly Australian Myoporeae. The rapid mid‐Eocene diversification is aligned with geographic expansion within southern Africa in most tribes, followed by range expansion to tropical Africa and multiple dispersals out of Africa. Our robust phylogeny provides a framework for future studies aimed at understanding the role of macroevolutionary patterns and processes that generated Scrophulariaceae diversity.
Keywords	Scrophulariaceae ; data collection ; geographical distribution ; phylogeny ; Southern Africa
Language	English
Dates of publication	2023-11
Size	p. 1601-1615.
Publishing place	John Wiley & Sons, Ltd
Document type	Article ; Online
Note	JOURNAL ARTICLE
ZDB-ID	208885-x
ISSN	1469-8137 ; 0028-646X
ISSN (online)	1469-8137
ISSN	0028-646X
DOI	10.1111/nph.18845
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Article ; Online: Phylogenomics sheds new light on the drivers behind a long-lasting systematic riddle: the figwort family Scrophulariaceae.

Villaverde, Tamara / Larridon, Isabel / Shah, Toral / Fowler, Rachael M / Chau, John H / Olmstead, Richard G / Sanmartín, Isabel

The New phytologist

2023 Volume 240, Issue 4, Page(s) 1601–1615

Abstract	The figwort family, Scrophulariaceae, comprises c. 2000 species whose evolutionary relationships at the tribal level have proven difficult to resolve, hindering our ability to understand their origin and diversification. We designed a specific probe kit for Scrophulariaceae, targeting 849 nuclear loci and obtaining plastid regions as by-products. We sampled c. 87% of the genera described in the family and use the nuclear dataset to estimate evolutionary relationships, timing of diversification, and biogeographic patterns. Ten tribes, including two new tribes, Androyeae and Camptolomeae, are supported, and the phylogenetic positions of Androya, Camptoloma, and Phygelius are unveiled. Our study reveals a major diversification at c. 60 million yr ago in some Gondwanan landmasses, where two different lineages diversified, one of which gave rise to nearly 81% of extant species. A Southern African origin is estimated for most modern-day tribes, with two exceptions, the American Leucophylleae, and the mainly Australian Myoporeae. The rapid mid-Eocene diversification is aligned with geographic expansion within southern Africa in most tribes, followed by range expansion to tropical Africa and multiple dispersals out of Africa. Our robust phylogeny provides a framework for future studies aimed at understanding the role of macroevolutionary patterns and processes that generated Scrophulariaceae diversity.
MeSH term(s)	Phylogeny ; Phylogeography ; Scrophulariaceae ; Australia ; Biological Evolution
Language	English
Publishing date	2023-04-04
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	208885-x
ISSN	1469-8137 ; 0028-646X
ISSN (online)	1469-8137
ISSN	0028-646X
DOI	10.1111/nph.18845
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Fire facilitates ground layer plant diversity in a Miombo ecosystem.

Wieczorkowski, Jakub D / Lehmann, Caroline E R / Archibald, Sally / Banda, Sarah / Goyder, David J / Kaluwe, Mokwani / Kapinga, Kondwani / Larridon, Isabel / Mashau, Aluoneswi C / Phiri, Elina / Syampungani, Stephen

Annals of botany

2024

Abstract: Background and aims: Little is known about the response of ground layer plant communities to fire in Miombo ecosystems, which is a global blind spot of ecological understanding. We aim to (i) assess the impact of three experimentally imposed fire ... ...

Abstract	Background and aims: Little is known about the response of ground layer plant communities to fire in Miombo ecosystems, which is a global blind spot of ecological understanding. We aim to (i) assess the impact of three experimentally imposed fire treatments on ground layer species composition, and compare it with patterns observed for trees; and (ii) analyse the effect of fire treatments on species richness to assess how responses differ among plant functional groups. Methods: At a 60-year-long fire experiment in Zambia, we quantified the richness and diversity of ground layer plants in terms of taxa and functional groups across three experimental fire treatments of late dry-season fire, early dry-season fire, and fire exclusion. Data were collected in five repeat surveys from the onset of the wet season to the early dry season. Key results: Of the 140 ground layer species recorded across the three treatments, fire-maintained treatments contributed most of the richness and diversity, with the least number of unique species found at the No-fire treatment. The Early-fire treatment was more similar in composition to the No-fire treatment than to the Late-fire treatment. C4 grass and geoxyle richness were highest in the Late-fire treatment, and there were no shared sedge species between the Late-fire and other treatments. At a plot level, the average richness in the Late-fire treatment was twice that of the fire exclusion treatment. Conclusions: Heterogeneity in fire seasonality and intensity supports diversity of a unique flora by providing a diversity of local environments. African ecosystems face rapid expansion of land and fire management schemes for carbon offsetting and sequestration. We demonstrate that analyses of the impacts of such schemes predicated on the tree flora alone will highly likely underestimate impacts on biodiversity. A research priority must be a new understanding of the Miombo ground layer flora integrated into policy and land management.
Language	English
Publishing date	2024-03-12
Publishing country	England
Document type	Journal Article
ZDB-ID	1461328-1
ISSN	1095-8290 ; 0305-7364
ISSN (online)	1095-8290
ISSN	0305-7364
DOI	10.1093/aob/mcae035
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Article: Comparison of Magnoliaceae Plastomes: Adding Neotropical Magnolia to the Discussion

Guzmán-Díaz, Salvador / Núñez, Fabián Augusto Aldaba / Veltjen, Emily / Asselman, Pieter / Larridon, Isabel / Samain, Marie-Stéphanie

Plants. 2022 Feb. 06, v. 11, no. 3

2022

Abstract: Chloroplast genomes are considered to be highly conserved. Nevertheless, differences in their sequences are an important source of phylogenetically informative data. Chloroplast genomes are increasingly applied in evolutionary studies of angiosperms, ... ...

Abstract	Chloroplast genomes are considered to be highly conserved. Nevertheless, differences in their sequences are an important source of phylogenetically informative data. Chloroplast genomes are increasingly applied in evolutionary studies of angiosperms, including Magnoliaceae. Recent studies have focused on resolving the previously debated classification of the family using a phylogenomic approach and chloroplast genome data. However, most Neotropical clades and recently described species have not yet been included in molecular studies. We performed sequencing, assembly, and annotation of 15 chloroplast genomes from Neotropical Magnoliaceae species. We compared the newly assembled chloroplast genomes with 22 chloroplast genomes from across the family, including representatives from each genus and section. Family-wide, the chloroplast genomes presented a length of about 160 kb. The gene content in all species was constant, with 145 genes. The intergenic regions showed a higher level of nucleotide diversity than the coding regions. Differences were higher among genera than within genera. The phylogenetic analysis in Magnolia showed two main clades and corroborated that the current infrageneric classification does not represent natural groups. Although chloroplast genomes are highly conserved in Magnoliaceae, the high level of diversity of the intergenic regions still resulted in an important source of phylogenetically informative data, even for closely related taxa.
Keywords	Magnolia ; Neotropics ; chloroplast genome ; genes ; genetic variation ; phylogeny
Language	English
Dates of publication	2022-0206
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2704341-1
ISSN	2223-7747
ISSN	2223-7747
DOI	10.3390/plants11030448
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Diversity and Taxonomy of Cyperus (Cyperaceae) in the Central-West Region of Brazil

Pereira-Silva, Luciana / Larridon, Isabel / de Oliveira Ribeiro, André Rodolfo / Santos, Vinícius Martins / Trevisan, Rafael

Annals of the Missouri Botanical Garden. 2022 Nov. 11, v. 107, no. 1 p.480-545

2022

Abstract: A taxonomic study of Cyperus L. (Cyperaceae) in the Central-West region of Brazil is presented. We examined more than 1300 herbarium specimens. Many of the species were also studied in the field. Our results recognize 59 species of Cyperus in the Central- ...

Abstract	A taxonomic study of Cyperus L. (Cyperaceae) in the Central-West region of Brazil is presented. We examined more than 1300 herbarium specimens. Many of the species were also studied in the field. Our results recognize 59 species of Cyperus in the Central-West of Brazil, including three species endemic to the country that are potentially threatened with extinction, i.e., C. hooperae G. C. Tucker, C. longiculmis Pereira-Silva, Hefler & R. Trevis., and C. tuckerianus Pereira-Silva, Hefler & R. Trevis. Cyperus oxylepis Nees ex Steud. is reported from Brazil for the first time. Cyperus incomtus Kunth var. miguelii Kük. is proposed as a synonym of C. pearcei C. B. Clarke. We designate lectotypes for 20 names, a neotype for C. oxylepis, and an epitype for C. surinamensis Rottb. and select second-step lectotypes for 10 names. We also provide detailed morphological descriptions, illustrations, distribution data, an identification key for all species, and assessments of the conservation status for most species.
Keywords	Cyperus ; botanical gardens ; conservation status ; extinction ; herbaria ; lectotypes ; neotypes ; taxonomic keys ; Brazil ; Missouri ; Conservation ; Cyperaceae ; Cypereae ; morphology ; nomenclature ; South America
Language	English
Dates of publication	2022-1111
Size	p. 480-545.
Publishing place	the Missouri Botanical Garden
Document type	Article ; Online
ZDB-ID	2052088-8
ISSN	2162-4372 ; 0026-6493
ISSN (online)	2162-4372
ISSN	0026-6493
DOI	10.3417/2022760
Database	NAL-Catalogue (AGRICOLA)

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Article: Plastid phylogenomics of the Sansevieria Clade of Dracaena (Asparagaceae) resolves a recent radiation

van Kleinwee, Iris / Larridon, Isabel / Shah, Toral / Bauters, Kenneth / Asselman, Pieter / Goetghebeur, Paul / Leliaert, Frederik / Veltjen, Emily

Molecular phylogenetics and evolution. 2022 Apr., v. 169

2022

Abstract: Best known as low maintenance houseplants, sansevierias are a diverse group of flowering plants native to Africa, Madagascar, the Arabian Peninsula, and the Indian subcontinent. Traditionally recognised as a distinct genus, Sansevieria was recently ... ...

Abstract	Best known as low maintenance houseplants, sansevierias are a diverse group of flowering plants native to Africa, Madagascar, the Arabian Peninsula, and the Indian subcontinent. Traditionally recognised as a distinct genus, Sansevieria was recently merged with the larger genus Dracaena based on molecular phylogenetic data. Within the Sansevieria Clade of Dracaena, taxonomic uncertainties remain despite attempts to unravel the relationships between the species. To investigate the evolutionary relationships, morphological evolution and biogeographical history in the group, we aim to reconstruct a robust dated phylogenetic hypothesis. Using genome skimming, a chloroplast genome (cpDNA) dataset and a nuclear ribosomal (nrDNA) dataset were generated. The sampling included representatives of all sections and informal groups previously described in Sansevieria based on morphology. Analysis of the cpDNA dataset using a maximum likelihood approach resulted in a well-supported phylogeny. The time-calibrated phylogeny indicated a recent radiation with five main clades emerging in the Pliocene. Two strongly supported clades align with previously defined groups, i.e., Sansevieria section Dracomima, characterised by the Dracomima-type inflorescence, and the Zeylanica informal group, native to the Indian subcontinent. Other previously defined groups were shown to be polyphyletic; a result of convergent evolution of the identifying characters. Switches between flat and cylindrical leaves occurred multiple times in the evolution of the Sansevieria Clade. Similarly, the Cephalantha-type inflorescence has originated multiple times from an ancestor with a Sansevieria-type inflorescence. Analysis of the nrDNA dataset resulted in a phylogenetic hypothesis with low resolution, yet it supported the same two groups confirmed by the cpDNA dataset. This study furthers our understanding of the evolution of the Sansevieria Clade, which will benefit taxonomic and applied research, and aid conservation efforts.
Keywords	Dracaena ; Pliocene epoch ; Sansevieria ; ancestry ; applied research ; chloroplast DNA ; chloroplast genome ; convergent evolution ; data collection ; geographical distribution ; house plants ; polyphyly ; statistical analysis ; Africa ; India ; Madagascar ; West Asia
Language	English
Dates of publication	2022-04
Publishing place	Elsevier Inc.
Document type	Article
ZDB-ID	33610-5
ISSN	1095-9513 ; 1055-7903
ISSN (online)	1095-9513
ISSN	1055-7903
DOI	10.1016/j.ympev.2022.107404
Database	NAL-Catalogue (AGRICOLA)

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Article: Revision and new species of the African genus Mischogyne (Annonaceae)

Gosline, George / Marshall, Andrew R / Larridon, Isabel

Kew bulletin. 2019 June, v. 74, no. 2

2019

Abstract: Mischogyne (Annonaceae, tribe Monodoreae) is a genus of small- to medium-sized tropical trees and shrubs. It is characterised by a combination of: (1) stamens and carpels on a more or less extended torus; (2) carpels divergent from each other at the apex ...

Abstract	Mischogyne (Annonaceae, tribe Monodoreae) is a genus of small- to medium-sized tropical trees and shrubs. It is characterised by a combination of: (1) stamens and carpels on a more or less extended torus; (2) carpels divergent from each other at the apex of the torus above the anthers; (3) anthers linear and anther connectives not expanded above the thecae; (4) inflorescences extra-axillary (or sometimes terminal in M. michelioides) with usually solitary flowers; (5) petals reflexed at anthesis (except M. michelioides), and (6) prominent reticulate tertiary veins. The genus is found in the lowland tropical rainforests of Africa with annual precipitation of 1000 – 4000 mm and in the dry coastal foothills of Angola. Five species and one variety of Mischogyne are recognised. One newly discovered species from the Eastern Arc Mountains, M. iddii, is described. The variety M. elliotiana var. glabra is reduced into synonymy with M. elliotiana var. elliotiana. Mischogyne elliotiana var. gabonensis is raised to species level as M. gabonensis. Specimens from the Congo are recognised as a new species, M. congensis. Preliminary conservation status assessments are provided for each species, as well as an identification key and detailed species descriptions. An unusual distribution pattern for the genus is discussed: dry coastal Angola as well as West, Central and East African wet forest.
Keywords	Annonaceae ; anthers ; atmospheric precipitation ; carpels ; conservation status ; corolla ; flowering ; hills ; mountains ; new species ; plant taxonomy ; shrubs ; stamens ; taxonomic keys ; tropical plants ; tropical rain forests ; Angola ; Republic of the Congo
Language	English
Dates of publication	2019-06
Size	p. 28.
Publishing place	Springer London
Document type	Article
ZDB-ID	400069-9
ISSN	1874-933X ; 0075-5974
ISSN (online)	1874-933X
ISSN	0075-5974
DOI	10.1007/s12225-019-9804-7
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