Phylogeography and population genetics of<i>Acanthophyllum squarrosum</i>complex (Caryophyllaceae) in the Irano-Turanian region

Shamsabad, Masoumeh Mahmoudi; Assadi, Mostafa; Parducci, Laura

doi:10.1080/14772000.2019.1590476

Cited by 6 publications

(2 citation statements)

References 32 publications

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“…Notable examples of rapid radiation in this era have been well-ducumented in some cushion-forming taxa (e.g. Acantholimon [ 38 ]; Acanthophyllum [ 34 , 35 ] and thorny cushion Astragalus [ 59 ]).…”

Section: Discussionmentioning

confidence: 99%

“…The IT region is one of the hotspots of biological diversity in the Old World and harbors cushion-like and dwarf-shrubby taxa [ 31 , 32 ]. Several molecular phylogeny and phylogeographical studies have been conducted on cushion forming genera (e.g., Dionysia [ 33 ] particularly thorny genera from the IT region (e.g., Acanthophyllum [ 34 , 35 ], Acantholimon [ 36 – 38 ] and Astragalus [ 39 – 41 ])).…”

Section: Introductionmentioning

confidence: 99%

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Evolutionary history of an Irano-Turanian cushion-forming legume (Onobrychis cornuta)

Tayebi,

Moghaddam,

Mahmoodi

et al. 2024

BMC Plant Biol

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The Irano-Turanian region is one of the largest floristic regions in the world and harbors a high percentage of endemics, including cushion-like and dwarf-shrubby taxa. Onobrychis cornuta is an important cushion-forming element of the subalpine/alpine flora of the Irano-Turanian floristic region. To specify the genetic diversity among the populations of this species (including individuals of O. elymaitica), we employed nrDNA ITS and two noncoding regions of plastid DNA (rpl32-trnL(UAG) and trnT(UGU)-trnL(UAA)). The most striking feature of O. cornuta assemblages was the unexpectedly high nucleotide diversity in both the nDNA and cpDNA dataset. In the analyses of nuclear and plastid regions, 25 ribotypes and 42 haplotypes were found among 77 and 59 accessions, respectively, from Iran, Turkey, and Afghanistan. Network analysis of the datasets demonstrated geographic differentiation within the species. Phylogenetic analyses of all dataset retrieved O. cornuta as a non-monophyletic species due to the inclusion of O. elymaitica, comprising four distinct lineages. In addition, our analyses showed cytonuclear discordance between both nuclear and plastid topologies regarding the position of some O. cornuta individuals. The underlying causes of this inconsistency remain unclear. However, we speculate that chloroplast capture, incomplete lineage sorting, and introgression were the main reasons for this event. Furthermore, molecular dating analysis indicated that O. cornuta originated in the early Pliocene (around 4.8 Mya) and started to diversify throughout the Pliocene and in particular the Pleistocene. Moreover, O. elymaitica was reduced to a subspecific rank within the species.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evolutionary history of an Irano-Turanian cushion-forming legume (Onobrychis cornuta)

Tayebi,

Moghaddam,

Mahmoodi

et al. 2024

BMC Plant Biol

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Biogeographic history and diversification patterns in the Irano-Turanian genus Acanthophyllum s.l. (Caryophyllaceae)

Shamsabad

Moharrek

Assadi

et al. 2020

Plant Biosystems - An International Journal Dealing with all As

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The Irano-Turanian (IT) floristic region in Asia contains three biodiversity hotspots and has been a source of xerophytic taxa for neighboring regions. Despite its species richness and large territory, the evolutionary history and biogeography of this floristic region is poorly understood. Acanthophyllum, encompassing ca. 70 subshrubby mostly thorny-cushion species, is one of the important components of the steppe and mountain vegetation of this region. In this study, we investigate the tempo and mode of diversification as well as the biogeographic patterns of this genus. The ancestral area analysis suggests that Acanthophyllum originated east of the Zagros Mountains in the Miocene, from where it expanded westwards. A shift in the speciation rate in the late Pliocene (ca. 3.24 Ma) was detected, based on a nrDNA ITS tree, affecting the lineage of the largest section in the genus, Acanthophyllym sect. Oligosperma. Parallelisms with another IT species-rich genera in aspects such as largely coincident ranges and habitats, presence of a thorny-cushion life-form, similar areas reconstructed for their MRCA, and the inference of a shift in speciation in the region suggest common underlying abiotic and biotic factors or even drivers for diversification and speciation in the high elevation dry continental landscape of IT region.

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The Evolutionary Pathways of Oxytropis Species of the Section Verticillares at the Center of the Section Origin

Kholina,

Artyukova,

Sandanov

2024

Russ J Genet

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Phylogeography and population genetics ofAcanthophyllum squarrosumcomplex (Caryophyllaceae) in the Irano-Turanian region

Cited by 6 publications

References 32 publications

Evolutionary history of an Irano-Turanian cushion-forming legume (Onobrychis cornuta)

Evolutionary history of an Irano-Turanian cushion-forming legume (Onobrychis cornuta)

Biogeographic history and diversification patterns in the Irano-Turanian genus Acanthophyllum s.l. (Caryophyllaceae)

The Evolutionary Pathways of Oxytropis Species of the Section Verticillares at the Center of the Section Origin

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