Population genetic analysis reveals a homoploid hybrid origin of<i>Stephanomeria diegensis</i>(Asteraceae)

Sherman, Natasha A.; Burke, John M.

doi:10.1111/j.1365-294x.2009.04349.x

Cited by 16 publications

(19 citation statements)

References 61 publications

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“…Evidence of retained interfertility between taxa and natural hybridization in many young CA-FP clades has contributed to hypotheses of hybrid origins and introgression that are increasingly being tested with molecular evidence. Molecular data are consistent with hypotheses of homoploid hybrid origin of the annual wirelettuce Stephanomeria diegensis (Compositae; Sherman & Burke 2009) and some annual sunflowers (Helianthus bolanderi, H. exilis;Rieseberg 1991), which include other, well-characterized examples 360 Baldwin of such evolution outside the CA-FP (Rieseberg 2006). Comparisons of cytogenetic and molecular phylogenetic data support a homoploid hybrid origin of Collinsia tinctoria associated with convergent evolution of a chromosomal arrangement and expanded elevational range .…”

Section: Hybridizationsupporting

confidence: 77%

Origins of Plant Diversity in the California Floristic Province

Baldwin

2014

Annu. Rev. Ecol. Evol. Syst.

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Recent biogeographic and evolutionary studies have led to improved understanding of the origins of exceptionally high plant diversity in the California Floristic Province (CA-FP). Spatial analyses of Californian plant diversity and endemism reinforce the importance of geographically isolated areas of high topographic and edaphic complexity as floristic hot spots, in which the relative influence of factors promoting evolutionary divergence and buffering of lineages against extinction has gained increased attention. Molecular phylogenetic studies spanning the flora indicate that immediate sources of CA-FP lineages bearing endemic species diversity have been mostly within North America-especially within the west and southwest-even for groups of north temperate affinity, and that most diversification of extant lineages in the CA-FP has occurred since the mid-Miocene, with the transition toward summer-drying. Process-focused studies continue to implicate environmental heterogeneity at local or broad geographic scales in evolutionary divergence within the CA-FP, often associated with reproductive or life-history shifts or sometimes hybridization.

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Section: Hybridizationsupporting

confidence: 77%

Origins of Plant Diversity in the California Floristic Province

Baldwin

2014

Annu. Rev. Ecol. Evol. Syst.

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“…Nuclear SSRs have been used successfully in studies investigating the origin of homoploid hybrid species (Liu et al., ; Sherman & Burke, ), and the nSSRs identified by White et al. () were effective in identifying genetic clusters for this study.…”

Section: Discussionmentioning

confidence: 99%

Independent homoploid hybrid speciation events in the Macaronesian endemic genusArgyranthemum

et al. 2018

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Well‐characterized examples of homoploid hybrid speciation (HHS) are rare in nature, yet they offer the potential to study a number of evolutionary processes. In this study, we investigate putative homoploid hybrid species in the genus Argyranthemum (Asteraceae), a group of plants endemic to the Macaronesian archipelagos of the North Atlantic Ocean. We specifically address a number of knowledge gaps surrounding the origin(s) of A. sundingii and A. lemsii, which are thought to be derived from the same parental cross. Comparisons of leaf morphology suggest that A. sundingii and A. lemsii are distinct from their parental progenitors and distinguishable from each other based on leaf area. Ecological niche modelling (ENM) demonstrated that the homoploid hybrid species occupy novel habitats that are intermediate relative to the parental species. Nuclear simple sequence repeat markers (SSRs) and single nucleotide polymorphism (SNP) data indicate that the homoploid hybrid species are distinct from the parental taxa, while population‐level sampling of chloroplast SSRs and approximate Bayesian computation show that A. sundingii and A. lemsii are independently derived from the same parental cross. As such, Argyranthemum represents an example of independent homoploid hybrid speciation events with evidence of divergence in leaf morphology and adaptation to novel intermediate habitats. On oceanic islands, which are often typified by steep ecological gradients and inhabited by recently derived species with weak reproductive barriers, multiple HHS events from the same parental cross are not only possible but also likely to have played a more important role in oceanic island radiations than we currently think.

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“…In this study, O.× adae has only two polymorphic loci in the nrITS DNA region (130,198). However, the ancestor species O. ayliniae has three polymorphic loci (bases 143, 155, and 497 Sherman and Burke (2009) examined the population genetics of a homoploid hybrid origin of Stephanomeria diegensis Gottlieb. They isolated the plant DNA from the buds.…”

Section: Discussionmentioning

confidence: 99%

A new species and a new natural hybrid of Origanum L. (Lamiaceae) from the west of Turkey

Dırmencı¹,

Yazıcı²,

Özcan³

et al. 2018

Turk J Bot

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The species of the genus Origanum L. are strongly aromatic perennial herbs and subshrubs. The Origanum species have many morphological and chemical varieties. Carvacrol, thymol, linalool, and p-cymene are some of their abundant chemical components. Origanum species are widely used as tea and herbs in folk medicine. They have antispasmodic, antimicrobial, expectorant, antioxidant, anticholinesterase, and carminative effects. (Başer and Kırımer, 2006;Yılmaz et al., 2017). Therefore, the use of Origanum plants is very common as tea, as additives to foods, and in traditional remedies for the treatment of infectious diseases and the prevention of cancer and gastrointestinal system diseases (Marrelli et al., 2010).The genus Origanum (Lamiaceae, subfamily: Nepetoideae, tribe: Mentheae, subtribe: Menthineae) comprises 43 species (51 taxa) and 15 hybrids worldwide (Ietswaart, 1980(Ietswaart, , 1982. The species are mainly concentrated in the temperate regions of the Mediterranean area. Twenty-three species (26 taxa), 8 hybrids, and one suspected species have been recorded in Turkey, which has the most species. Twenty of those are endemic (Ietswaart, 1982;Davis et al., 1988;Duman, 2000). The species are classified into eight sections: Sect. Amaracus (Gleditsch) Vogel ( 4species), Sect. Anatolicon Ietsw. (2 species), Sect. Breviflamnetum Ietsw. (7 species), Sect. Longitubus Ietsw. (1 species), Sect. Chilocalyx (Briq.) Ietsw. (3 species), Sect. Majorana (Mill.) Benth. (3 species), Sect. Origanum (1 species, 4 taxa), and Sect. Prolaticorolla Ietsw. (1 species).Origanum dictamnus L., indicated as a suspected species in the Flora of Turkey, belongs to the section Amaracus. To date, O. dictamnus has only been recorded from Crete, where it is considered endemic. An unflowered specimen from Aydın-Priene (Fors-Maj. 665) was collected and identified as O. dictamnus in the Flora of Turkey (Ietswaart, 1980(Ietswaart, , 1982. This specimen (from Aydın-Priene) was different from O. dictamnus in respect to the unbranched indumentum. However, although this specimen did not have flowers, it was reported that this specimen did not, in fact, belong to O. dictamnus (Ietswaart, 1980(Ietswaart, , 1982. Based on this note stated in the Flora of Turkey and the Eastern Aegean Islands, in order to collect new materials, a field trip was made to the environs of Priene, an ancient city on the Dilek Peninsula/Kuşadası (Figure 1). Despite covetable specimens not being collected from Priene, some

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Population genetic analysis reveals a homoploid hybrid origin ofStephanomeria diegensis(Asteraceae)

Cited by 16 publications

References 61 publications

Origins of Plant Diversity in the California Floristic Province

Origins of Plant Diversity in the California Floristic Province

Independent homoploid hybrid speciation events in the Macaronesian endemic genusArgyranthemum

A new species and a new natural hybrid of Origanum L. (Lamiaceae) from the west of Turkey

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