Phylogeny and biogeography of <i>Polygala</i> (Polygalaceae)

Pastore, José Floriano Barêa; Abbott, J. Richard; Neubig, Kurt M.; Berg, Cássio van den; Mota, Michelle; Cabral, Andressa; Whitten, W. Mark

doi:10.1002/tax.12119

Cited by 21 publications

(34 citation statements)

References 48 publications

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“…Phylogenetic analysis based on chloroplast genome sequences of eleven plants from Fabales shows that P. japonica is a sister to P. tenuifolia forming monophyletic group closely related to P. fallax and P. arillata ( Figure 1 ), which is consistent with previous molecular results (Pastore et al. 2019 ).…”

supporting

confidence: 90%

The complete chloroplast genome of Polygala japonica Houtt. (Polygalaceae), a medicinal plant in China

Zuo

Mao

Shang

et al. 2021

Mitochondrial DNA Part B

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Polygala japonica Houtt. (Polygalaceae) is a perennial herbaceous plant widely distributed in south China. Here, we assembled and characterized the complete chloroplast (cp) genome of P. japonica using sequencing data. The complete cp genome of P. japonica was 165,439 bp in length, with a GC content of 36.7%. The complete cp genome shows a typical quadripartite structure with a pair of inverted repeats (IRs) of 36,786 bp, separated by a large single copy region (LSC) of 83,722 bp, and a small single copy region (SSC) of 8,145 bp. A total of 135 genes were annotated in the cp genome of P. japonica , consisting of 89 protein-coding genes, 8 rRNA genes, and 38 tRNA genes. The phylogenetic analysis showed P. japonica had a closer relationship with P. tenuifolia.

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supporting

confidence: 90%

The complete chloroplast genome of Polygala japonica Houtt. (Polygalaceae), a medicinal plant in China

Zuo

Mao

Shang

et al. 2021

Mitochondrial DNA Part B

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“…Molecular phylogenetic studies clearly indicate Polygala to be polyphyletic (Eriksen 1993, Persson 2001, Monro 2003, Forest et al 2007) with three well supported clades, a New World clade (NWC), an Old World clade (OWC), and a third clade comprising Polygala subg. Chodatia nested separately (Pastore et al 2019, Martinez et al 2022). The OWC is the most species-rich and is distributed in Europe, Africa and Asia (Lyskov et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Polygala is one of the most diverse genera in the family Polygalaceae and it has a nearly cosmopolitan distribution, being absent only from the Arctic and New Zealand (Cronquist 1981, Paiva 2001, Bernardi 2000, Eriksen and Persson 2007). There is no strict consensus on the number of species as the genus delimitation is still debated, but one recent evaluation accepted 552 species of Polygala (Pastore et al 2019). Molecular phylogenetic studies clearly indicate Polygala to be polyphyletic (Eriksen 1993, Persson 2001, Monro 2003, Forest et al 2007) with three well supported clades, a New World clade (NWC), an Old World clade (OWC), and a third clade comprising Polygala subg.…”

Section: Introductionmentioning

confidence: 99%

Morphological and molecular data on a new species of Polygala (Polygalaceae) from Turkey

Çeçen

Aydın

Dönmez

2023

Nordic Journal of Botany

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Polygala fadimeana Dönmez and Çeçen is here described as a new species from the inner part of the Taurus mountain range in Turkey based on morphological data and its phylogenetic position is discussed based on molecular data. This new species is confined to limestone rock walls and is morphologically distinguished from P. kurdica and P. peshmenii by smaller plant size, nearly glabrous leaves, enrolled inner sepals, white colour crest, and other minor diagnostic features. However, a multi‐locus chloroplast phylogeny (trnL‐F and rbcL) including accessions of the new species and related taxa of Turkish Polygala revealed a close relationship to P. pruinosa and P. supina. The taxonomic relationship among the new species and P. kurdica, a poorly known species from Zagros Mountain range, and other closely related species such as P. pruinosa, P. peshmenii and P. supina are discussed. The new species is assessed as critically endangered (CR) based on current knowledge and the distribution of the new species and related taxa is mapped.

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“…Species is the basic unit of biodiversity ( Mayr, 1982 ; Claridge et al, 1997 ; Coyne and Orr, 2004 ) and almost all the biological researches regard one or more species as their study subjects ( Guggisberg et al, 2006 ; Zheng et al, 2014 ; Pastore et al, 2019 ). Although there are at least 30 recognized concepts on species ( Wilkins, 2009 ), most of them are incomplete as they only reflect one or two characters of species.…”

Section: Introductionmentioning

confidence: 99%

Phylogeny and Species Delimitation of Chinese Medicago (Leguminosae) and Its Relatives Based on Molecular and Morphological Evidence

Chen

Shrestha

et al. 2021

Front. Plant Sci.

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Medicago and its relatives, Trigonella and Melilotus comprise the most important forage resources globally. The alfalfa selected from the wild relatives has been cultivated worldwide as the forage queen. In the Flora of China, 15 Medicago, eight Trigonella, and four Melilotus species are recorded, of which six Medicago and two Trigonella species are introduced. Although several studies have been conducted to investigate the phylogenetic relationship within the three genera, many Chinese naturally distributed or endemic species are not included in those studies. Therefore, the taxonomic identity and phylogenetic relationship of these species remains unclear. In this study, we collected samples representing 18 out of 19 Chinese naturally distributed species of these three genera and three introduced Medicago species, and applied an integrative approach by combining evidences from population-based morphological clusters and molecular data to investigate species boundaries. A total of 186 individuals selected from 156 populations and 454 individuals from 124 populations were collected for genetic and morphological analyses, respectively. We sequenced three commonly used DNA barcodes (trnH-psbA, trnK-matK, and ITS) and one nuclear marker (GA3ox1) for phylogenetic analyses. We found that 16 out of 21 species could be well delimited based on phylogenetic analyses and morphological clusters. Two Trigonella species may be merged as one species or treated as two subspecies, and Medicago falcata should be treated as a subspecies of the M. sativa complex. We further found that major incongruences between the chloroplast and nuclear trees mainly occurred among the deep diverging lineages, which may be resulted from hybridization, incomplete lineage sorting and/or sampling errors. Further studies involving a finer sampling of species associated with large scale genomic data should be employed to better understand the species delimitation of these three genera.

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Phylogeny and biogeography of Polygala (Polygalaceae)

Cited by 21 publications

References 48 publications

The complete chloroplast genome of Polygala japonica Houtt. (Polygalaceae), a medicinal plant in China

The complete chloroplast genome of Polygala japonica Houtt. (Polygalaceae), a medicinal plant in China

Morphological and molecular data on a new species of Polygala (Polygalaceae) from Turkey

Phylogeny and Species Delimitation of Chinese Medicago (Leguminosae) and Its Relatives Based on Molecular and Morphological Evidence

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