The phylogeny and new classification of the genus Onobrychis (Fabaceae-Hedysareae): evidence from molecular data

Amirahmadi, Atefe; Osaloo, Shahrokh Kazempour; Kaveh, Akram; Maassoumi, Ali Asghar; Naderi, Reza

doi:10.1007/s00606-016-1343-1

Cited by 16 publications

(15 citation statements)

References 34 publications

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“…These environments where Acantholimon species occur are frequent and even dominant in the IT region, and host also other species-rich genera, such as Acanthophyllum, Astragalus, Cousinia, Haplophyllum, Onobrychis Mill. (Podlech and Maassoumi, 2003; Ranjbar and Karamian, 2003; López-Vinyallonga et al, 2009; Djamali et al, 2012b; Manafzadeh et al, 2014; Pirani et al, 2014; Amirahmadi et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Morphological Innovations and Vast Extensions of Mountain Habitats Triggered Rapid Diversification Within the Species-Rich Irano-Turanian Genus Acantholimon (Plumbaginaceae)

et al. 2019

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The Irano-Turanian floristic region spans a topographically complex and climatically continental territory, which has served as a source of xerophytic taxa for neighboring regions and is represented by a high percent of endemics. Yet, a comprehensive picture of the abiotic and biotic factors that have driven diversification within this biota remains to be established due to the scarcity of phylogenetic studies. Acantholimon is an important component of the subalpine steppe flora of the Irano-Turanian region, containing c. 200 cushion-forming sub-shrubby pungent-leaved species. Our recent molecular phylogenetic study has led to enlarging the circumscription of this genus to include eight mono- or oligospecific genera lacking the characteristic life-form and leaves. Using the same molecular phylogeny, here we investigate the tempo and mode of diversification as well as the biogeographic patterns in this genus, to test the hypothesis that a combination of key morphological innovations and abiotic factors is behind Acantholimon high species diversity. Molecular dating analysis indicates that Acantholimon s.l. started to diversify between the Late Miocene and the Pliocene and the biogeographic analysis points to an Eastern Iran–Afghanistan origin. Macroevolutionary models support the hypothesis that the high diversity of the genus is explained by accelerated diversification rates in two clades associated with the appearance of morphological key innovations such as a cushion life-form and pungent leaves; this would have favored the colonization of water-stressed, substrate-poor mountainous habitats along the newly uplifted IT mountains during the Mio-Pliocene. Given the apparent similarity of mountain habitats for most species of Acantholimon, we hypothesize that its current high species diversity responds to a scenario of non-adaptive radiation fueled by allopatric speciation rather than evolutionary radiation driven by ecological opportunity. Similar scenarios might underlie the high diversity of other speciose genera in the topographically complex Irano-Turanian landscape, though this remains to be tested with fine-grained distribution and climatic data.

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Section: Discussionmentioning

confidence: 99%

Morphological Innovations and Vast Extensions of Mountain Habitats Triggered Rapid Diversification Within the Species-Rich Irano-Turanian Genus Acantholimon (Plumbaginaceae)

et al. 2019

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“…Based on earlier studies, which attempted to described the phylogenetic relationships between closely related genera to Oxytropis (Wojciechowski et al, 1999;Wojciechowski, 2005), we chose nuclear ribosomal ITS and plasted trnL-F markers to perform molecular work. Both DNA regions have been widely used in molecular systematic studies of plants at lower taxonomic levels (e.g., Kazemi et al, 2009;Amirahmadi et al, 2014Amirahmadi et al, , 2016. The ITS region was amplified using primers ITS5m (Sang et al, 1995) and ITS4 (White et al, 1990).…”

Section: Taxon Sampling and Choice Of Markersmentioning

confidence: 99%

Increasing phylogenetic support for explosively radiating taxa: The promise of high‐throughput sequencing for Oxytropis (Fabaceae)

Shavvon

Osaloo

Maassoumii

et al. 2017

J of Sytematics Evolution

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The origin and evolution of alpine biota are not yet fully understood, particularly in the vast Asian mountain regions. In addition, in these regions, most studies have concentrated on taxa occurring in areas benefitting from relatively generous rainfall from the summer monsoon. In this study, we collected a large number of Oxytropis species throughout their distribution range, and investigated the taxonomy and evolution of this diverse legume genus, which also occurs in mountainous areas prone to drought. Using nuclear (ITS) and plastid (trnL‐F) markers, we reconstructed phylogenetic relationships within Oxytropis, conducting maximum parsimony, fasttree‐like, maximum likelihood, Bayesian, and BEAST analyses. We also used Anchored Hybrid Enrichment (AHE) to test the power of this method to resolve relationships among a small subset of Oxytropis species. For AHE, we sampled eight species and obtained 527 low‐copy and orthologous nuclear loci. We show that the taxonomy of this genus that radiated explosively in Asian mountains will remain recalcitrant based on conventional molecular methods. Because of a severe lack of resolution, none of the available taxonomic treatments for Oxytropis could either be confirmed or refuted based upon ITS and trnL‐F. Nevertheless, we confirm the status of several species, and identify morphological or genetic particularities for some groups of species. The AHE approach yielded a highly supported phylogenetic tree, suggesting that increased taxon sampling coupled with AHE methods promise advances in the study of the taxonomy and evolution of Oxytropis, thus providing further analytical opportunities, such as diversification rate and biogeographical analyses.

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“…Unlike studies on protein and characteristics of seeds, DNA fingerprinting revealed that a classification of the Onobrychis genus weakly supported the taxonomical sections and many species would be synonyms (Hayot-Carbonero, 2011; Safaei Chaei Kar et al ., 2014; Duan et al ., 2015; Zarrabian and Majidi, 2015; Amirahmadi et al ., 2016). In the previous nrDNA ITS-based phylogenetic studies (Ahangarian et al ., 2007; Safaei Chaei Kar et al ., 2012), the non-monophyly of the Onobrychis subgenus indicated the subgenus Sisyrosema was retained as monophyletic.…”

Section: Introductionmentioning

confidence: 99%

Relationships of Worldwide Onobrychis species: from seed & pod morphology and molecular perspective

Zarrabian

Dehkordi

Ehtemam

et al. 2022

Preprint

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The present study aimed to investigate the phylogeny of 31 Onobrychis species with the help of seed and fruit macro & micro-morphological traits and ISSR molecular markers. The species were found to be highly variable in their seed and fruit morphological traits. Also, a new type of fruit (O. crista galli type), in addition to the three predefined types of fruit, was introduced. From molecular perspective, a set of 22 ISSR primers were shown to have a good efficiency for genetic discrimination among the species. Bayesian model-based STRUCTURE analysis grouped the genotypes into 4 genetic clusters, and the high value of Fst calculated for these clusters indicated a high level of genetic differentiation among them. On the other hand, based on the Maximum Likelihood phylogenetic tree, our results are in agreement with the subgenus classification (Onobrychis and Sisyrosema), while contrary to Sisyrosema, the Onobrychis subgenus (the Lophobrychis and Onobrychis sections) appears not to be monophyletic. Furthermore, in contrast to the traditional taxonomic classification, species belonging to the Lophobrychis section do not form a coherent group, indicating that this section could be considered as a heterogeneous unit and perhaps could be merge into the Onobrychis section.HighlightThis paper discusses a worldwide phylogenic analysis and population structures of Onobrychis genus. The results of this paper provide a comprehensive answer to complexity of subgenus and section discrimination.

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The phylogeny and new classification of the genus Onobrychis (Fabaceae-Hedysareae): evidence from molecular data

Cited by 16 publications

References 34 publications

Morphological Innovations and Vast Extensions of Mountain Habitats Triggered Rapid Diversification Within the Species-Rich Irano-Turanian Genus Acantholimon (Plumbaginaceae)

Morphological Innovations and Vast Extensions of Mountain Habitats Triggered Rapid Diversification Within the Species-Rich Irano-Turanian Genus Acantholimon (Plumbaginaceae)

Increasing phylogenetic support for explosively radiating taxa: The promise of high‐throughput sequencing for Oxytropis (Fabaceae)

Relationships of Worldwide Onobrychis species: from seed & pod morphology and molecular perspective

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