Molecular phylogenetic analysis and character evolution in Pseudostellaria (Caryophyllaceae) and description of a new genus, Hartmaniella, in North America

Zhang, Mingli; Zeng, Xiao-Qing; Li, Chao; Sanderson, Stewart C.; Byalt, V. V.; Lei, Yang

doi:10.1093/botlinnean/box036

Cited by 12 publications

(51 citation statements)

References 18 publications

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“…However, Zhang et al () based on their molecular phylogenetic studies showed that section Pseudostellaria is embedded in section Mamillatae , which is not supportive for the idea of dividing Pseudostellaria into two sections.…”

Section: Discussionmentioning

confidence: 95%

“…Cluster analysis also showed that P. rupestris and species in the section Mamillatae are clustered in the same clade (Figure ). Mapping pollen characteristics (surface ornamentation and the pores distance) on the phylogenetic tree of Zhang et al () showed no significant differences in pollen morphology between section Pseudostellaria and section Mamillatae (Figure ). Therefore, our results are consistent with the view of Zhang et al ().…”

Section: Discussionmentioning

confidence: 97%

“…The pollen morphological features are significant to identify the interspecific relationship and can apply to separate species from each other which are similar in external morphology (Cui et al, ; Mostafavi & Mehregan, ; Ullah et al, ; Ullah, Nasar Shah, et al, ; Zhang et al, ).…”

Section: Discussionmentioning

confidence: 99%

“…After being standardized, they were used for cluster analysis of Pseudostellaria using the Euclidean distance and Ward's () methods. In addition, pollen characteristics (surface ornamentation and the pores distance) were mapped on the molecular phylogenetic tree of Pseudostellaria (Zhang et al, ) to assess phylogenetic relationships within different genera.…”

Section: Methodsmentioning

confidence: 99%

“…Sadeghian, Zarre, Rabeler, and Heubl () believed based on molecular data that Pseudostellaria and subgenus Solitaria of Odontostemma clade are sister groups to each other. Zhang et al () expanded the sample size and selected three chloroplast fragments ( matK , rbcL , and rps16 ) and one nuclear gene fragment (ITS) for their phylogenetic studies. The results showed that section Pseudostellaria was embedded in the section Mamillatae , which does not support the classification perspectives of Mizushima () and Ohwi ().…”

Section: Introductionmentioning

confidence: 99%

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Pollen morphology of Chinese Pseudostellaria (Caryophyllaceae) and its systematic significance

Cui

Ren

et al. 2020

Microscopy Res & Technique

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Using light and scanning electron microscopy, we studied the pollen morphology of six species (one of which are endemic) of Chinese Pseudostellaria. All species were studied for the first time. Results of this study indicated that pollen grains of Pseudostellaria are spheroidal or spheroidal-polyhedral in shape and small or medium in size and pantoporate. Each pollen grain has 12-16 round pores. These pores are apart from each other by 5.77-7.73 μm and each has 7-13 granules in the operculum region. These features have important taxonomic significance. In addition, their pollen grains have thin exine with microechinate-punctate-perforate surface ornamentation. Pollen features do not support the traditional infrageneric classification of Pseudostellaria into two sections, but support that Pseudostellaria is closely related to other species of the Odontostemma clade. K E Y W O R D S palynological, pollen morphology, Pseudostellaria, systematics

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Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pollen morphology of Chinese Pseudostellaria (Caryophyllaceae) and its systematic significance

Cui

Ren

et al. 2020

Microscopy Res & Technique

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Intergeneric relationships within the tribe Alsineae (Caryophyllaceae) as inferred from nrDNA ITS and cpDNArps16 sequences: A step toward a phylogenetically based generic system

Arabi

Ghahremaninejad

Rabeler

et al. 2022

TAXON

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The tribe Alsineae is a large monophyletic group in the family Caryophyllaceae especially found across Eurasia and the Americas, but with a center of diversity in the Mediterranean region. Several previous molecular phylogenetic studies have focused on the delimitation of genera and tribes of Caryophyllaceae, especially the subfamily Alsinoideae or the tribe Alsineae in a broader sense than now recognized. However, there are still many open questions regarding the subdivision of the tribe and genus delimitation. In the present study, we sampled 191 (148 species) and 149 (125 species) accessions of Alsineae representing almost all (Adenonema and Pseudocerastium were not available to us) recognized genera in the tribe for nuclear DNA internal transcribed spacer (ITS) and plastid marker rps16 sequences, respectively. A combined matrix of 103 species was built for taxa with both sequences available. Maximum parsimony and Bayesian inference analyses retrieved Cerastium and Stellaria (including Myosoton) as the largest monophyletic genera, while other genera were medium‐sized (10–20 spp.) or small (<10 spp.). Our expanded sampling of Pseudostellaria and its relatives suggests a broader circumscription of this genus. Major divergence in morphology, particularly of the seeds, observed in the “Protostellaria”‐clade, allows recognition of some taxonomic changes. A total of 16 genera are recognized in Alsineae including Cerastium, Dichodon, Hartmaniella, Holosteum, Lepyrodiclis, Mesostemma, Moenchia, Nubelaria, Odontostemma, Pseudostellaria, Rabelera, Schizotechium, Shivparvatia, and Stellaria, along with Adenonema and Pseudocerastium that could not be analyzed and are, therefore, kept as distinct genera. A diagnostic key to these genera, as well as notes on their relationships, distribution, and nomenclature, is provided.

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Phylogenetic estimation and morphological evolution of Alsineae (Caryophyllaceae) shed new insight into the taxonomic status of the genus Pseudocerastium

et al. 2021

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Pseudocerastium is a monotypic genus in Caryophyllaceae endemic to China. The genus has been widely accepted since it was described in 1998, however its phylogenetic position within Caryophyllaceae has never been studied. In the present study, the whole plastid genome and nuclear ribosomal internal transcribed spacer (ITS) sequences of Pseudocerastium stellarioides was obtained through genome skimming, and the phylogenetic position of the species was studied for the first time. Plastid phylogenomic analysis of Caryophyllaceae revealed that Pseudocerastium is clustered within the tribe Alsineae with strong support. Phylogenetic analyses based on an enlarged taxon sampling of Alsineae using five DNA regions ( matK , rbcL , rps16 intron , trnL-F and ITS) revealed that P. stellarioides was nested deeply within Cerastium with strong support. Analyses of morphological character evolution suggest that the ancestral states in Alsineae include three styles and a six-lobed capsule at the apex, while both Cerastium and Pseudocerastium have five styles and ten lobes at the apex of the capsule, further supporting their close relationship. The species Pseudocerastium stellarioides is similar to Cerastium wilsonii in morphology, but differs in having villous indumentum on the lower part of the filaments and compressed globose seeds. Therefore, based on the present molecular and morphological evidence, the generic name Pseudocerastium is reduced here as a new synonym of Cerastium and the species P. stellarioides is transferred to Cerastium as C. jiuhuashanense .

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Molecular phylogenetic analysis and character evolution in Pseudostellaria (Caryophyllaceae) and description of a new genus, Hartmaniella, in North America

Cited by 12 publications

References 18 publications

Pollen morphology of Chinese Pseudostellaria (Caryophyllaceae) and its systematic significance

Pollen morphology of Chinese Pseudostellaria (Caryophyllaceae) and its systematic significance

Intergeneric relationships within the tribe Alsineae (Caryophyllaceae) as inferred from nrDNA ITS and cpDNArps16 sequences: A step toward a phylogenetically based generic system

Phylogenetic estimation and morphological evolution of Alsineae (Caryophyllaceae) shed new insight into the taxonomic status of the genus Pseudocerastium

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