Infrageneric nomenclature adjustments in CrataegusL. (Maleae, Rosaceae) (project)

Ufimov, Roman; Dickinson, Timothy A.

doi:10.7934/p3190

Cited by 12 publications

(26 citation statements)

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“…We suggest that others will also find this phenetic approach useful as it generates its own insights into variation in tree structure and complements those to be gained from IQ-TREE where studies generate large numbers of gene trees. Taxonomic, evolutionary, and biogeographic implications -Our results provide support for the infrageneric classification of Crataegus at the levels of subgenera and sections, as used here (Table 1; Ufimov & Dickinson 2020). In response to the comments by Phipps (2016) on earlier molecular results (Lo et al 2009a;Lo et al 2007;Zarrei et al 2015), we note first that the monophyly of the clade Crataegus + Mespilus is well-established by studies showing that a Hesperomeles + Crataegus + Mespilus clade (Li et al 2012) is sister to an Amelanchier clade, and that this combined clade, in turn, is sister to most or all of the remaining Malinae (Liu et al 2020;Lo & Donoghue 2012).…”

Section: Comparison Of Diploids + Tetraploids Gene Trees -supporting

confidence: 77%

“…For each of the same two sets of accessions we also obtained a plastome tree. The topologies of both these trees reflect the relationships between Crataegus subgenera seen in earlier molecular work (Lo et al 2009a;Zarrei et al 2015), as well as the morphological and biogeographic relationships between the subgenera (Ufimov & Dickinson 2020), and so we used them as reference trees against which we compare the single (and multi-) locus nuclear trees. In this way we seek to corroborate earlier evidence for gene flow within and between subgenera (Lo et al 2009b;Lo et al 2010;, as distinct from the effects of incomplete lineage sorting (ILS; Gitzendanner et al 2018;Li et al 2018;Lloyd Evans et al 2019;Magdy et al 2019) and possible artifacts of the sequence assembly process.…”

Section: Discussionmentioning

confidence: 99%

“…Taxon sampling -The focus of our work to date is Crataegus subg. Sanguineae, and the black-fruited hawthorns that are its North American representatives (Coughlan et al 2017;Coughlan et al 2014;Dickinson et al 1996;Dickinson et al 2008;Dickinson & Love 1997;Evans & Dickinson 1996;Lo et al 2009b;Lo et al 2013;Ufimov & Dickinson 2020;. We supplement these earlier results, where they were based on a limited number of loci, by obtaining total genomic DNA from leaf tissue dried on silica gel for 24 field-or gardencollected Crataegus individuals for which ploidy level had been determined previously by flow cytometry (Table 1; cf.…”

Section: Methodsmentioning

confidence: 95%

“…(Li et al 2012;Liu et al 2020), Crataegus diverged from unarmed, berryfruited Amelanchier, Malacomeles, and Peraphyllum by the acquisition of thorns and polypyrenous drupes whose pyrenes enclose a single seed (Campbell et al 2007;Lo & Donoghue 2012;Potter et al 2007;Xiang et al 2017;Zhang et al 2017). Crataegus encompasses considerable variation in its thorns, leaves, flowers, and fruits, such that there is a well-developed infrageneric classification (Table 1; Loudon 1838;Palmer 1925;Phipps 2015;Schneider 1906;Ufimov & Dickinson 2020) that is supported by DNA sequence data (Fig. 1; Lo & Donoghue 2012;Lo et al 2009a;Zarrei et al 2015;Ufimov et al 2021).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Peer Review #1 of "Phylogeny of Crataegus (Rosaceae) based on 257 nuclear loci and chloroplast genomes: evaluating the impact of hybridization (v0.1)"

2021

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Section: Comparison Of Diploids + Tetraploids Gene Trees -supporting

confidence: 77%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Peer Review #1 of "Phylogeny of Crataegus (Rosaceae) based on 257 nuclear loci and chloroplast genomes: evaluating the impact of hybridization (v0.1)"

2021

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“…Americanae El-Gazzar with a base number of 16 and less deeply divided leaves(El-Gazzar, 1980). Recent work byUfimov and Dickinson (2020) suggest five subgenera adding C. subgen. Sanguineae Ufimov, C. subgen.…”

mentioning

confidence: 99%

Biological Flora of the British Isles: Crataegus monogyna

Fichtner

Wissemann

2021

Journal of Ecology

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This account presents information on all aspects of the biology of Crataegus monogyna Jacq. (Hawthorn) that are relevant to understanding its ecological characteristics and behaviour. The main topics are presented within the standard framework of the Biological Flora of the British Isles: distribution, habitat, communities, responses to biotic factors, responses to environment, structure and physiology, phenology, floral and seed characters, herbivores and disease, history and conservation. Crataegus monogyna is native to the British flora, occurring frequently in hedgerows, scrubs, thickets and woodland. It can be found throughout almost all of Europe, on all soils of medium conditions regarding pH value, nutrient and water supply. Crataegus monogyna is a deciduous shrub or rarely a small tree of 2–8 m. Its twigs and branches bear sharp thorns about 1 cm long. Crataegus monogyna is of both ornamental and ecological value. During flowering in May and June, shrubs may appear white through a multitude of flowers, presenting pollen and nectar to a variety of different insects. Starting in August, almost the whole shrub can become dark red with the huge number of small red berries (pomes) produced during fruiting. The fruit are a preferred food for many birds. Although hybridizing freely and frequently with the other native species, Crataegus laevigata (Poir.) DC., the two species are easily recognizable in natural stands in the British Isles. Elsewhere, and with the occurrence of horticultural naturalizations and many intermediate forms of hybrid origin with closely related Crataegus species (especially the similar looking one‐styled species Crataegus rhipidophylla Gand. s.l. and Crataegus × subsphaerica Gand. s.l.) expert knowledge is required to avoid misidentifications and thus inaccurate understanding of frequency and distribution–not only on continental Europe but also increasingly in the British Isles. Identification in the field is further complicated by inbreeding of horticultural stock, which suffers from a myriad of descriptions and given names at different hierarchical levels. Cultivars are commonly planted in hedges and along roadsides or for ornamental purposes. The origin of this stock is not always known, so genetic exchange with the natural populations may lead to introgression and thus genotypes that are more adapted than the local genotypes in a changed environment.

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Teasing out elevational trends in infraspecific Prunus taxa: A vein analysis approach

Mollman,

Çiftçi,

Kaleli

et al. 2023

Microscopy Res & Technique

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Using 33 specimens collected from across their range in Turkey, we demonstrate that the subspecies of Prunus microcarpa C.A.Mey react very differently to altitude. We first outline a simplified, flexible protocol for sectioning and removing the epidermis of small, difficult‐to‐image leaves for leaf vein studies. We then used venation analysis software to evaluate the two subspecies of this wild cherry in relation to altitude. We also found key differences in venation features between short‐shoot and long‐shoot leaves for each taxon. Differences include statistically significant negative correlation between vein density, and positive correlation between areole area and altitude in long‐shoot leaves of Prunus microcarpa subsp. microcarpa, while its short‐shoot leaves had a positive relationship between maximum areole area, and negative relationship between vein density, numbers of veins and endpoints. Meanwhile, P. microcarpa subsp. tortuosa (Boiss. & Hausskn.) Browicz recorded trends that were largely opposite of this, but beside vein thickness and areole area, were not statistically significant. This difference may be part of each taxon's overarching syndrome of anatomical and morphological adaptations to its external environment.Research Highlights Features of vein density and thickness fell, while areole area and vein length rose with altitude in P. microcarpa. P. microcarpa subsp. tortuosa showed opposite trends, but reacted less strongly to altitude. Short‐shoot and long‐shoot have significantly different venation parameters. Using sections proportionate to leaf size is useful to compare venation of leaves that vary due to dimorphism. We discuss protocol strategies for imaging of difficult leaves for venation analyses.

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Infrageneric nomenclature adjustments in CrataegusL. (Maleae, Rosaceae) (project)

Cited by 12 publications

References 0 publications

Peer Review #1 of "Phylogeny of Crataegus (Rosaceae) based on 257 nuclear loci and chloroplast genomes: evaluating the impact of hybridization (v0.1)"

Peer Review #1 of "Phylogeny of Crataegus (Rosaceae) based on 257 nuclear loci and chloroplast genomes: evaluating the impact of hybridization (v0.1)"

Biological Flora of the British Isles: Crataegus monogyna

Teasing out elevational trends in infraspecific Prunus taxa: A vein analysis approach

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