Phylogenetic relationships, biogeography and taxonomic delimitation of <i>Astragalus</i> sect. <i>Acanthophace</i> (Fabaceae) using cpDNA and nrDNA ITS sequences analyses

Khalili, Zohreh; Ghalenoyi, Sahar; Maassoumi, Ali Asghar; Osaloo, Shahrokh Kazempour

doi:10.1080/11263504.2020.1739162

Cited by 6 publications

(5 citation statements)

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“…Molecular study support morphological traits in many problematic species of Astragalus (Chaudhary et al 2007). Comparative morphological, anatomical and seed macro-and micromorphological traits were also significant in systematic study of Aegacantha, and it has been helpful in phylogenetic reconstruction of this section (Khalili et al 2021). The spine anatomical features in thorny Astragalus species have been provide better reliable characters for circumscription of species (Engel 1992;Mehrabian et al 2007;Pirani et al 2006;Saghi et al 2015a;Gocić 2021).…”

Section: Introductionmentioning

confidence: 90%

“…The species of this section encompasses exclusively basifixed simple white and black hairs at the region of inflorescence, but in few species possess only white hairs (Zarre 2003). There are two types of indumentum including spreading (more frequently) and appressed types were found in the species of this section (Khalili et al 2021). The stipules are white to yellowish hyaline or membranous stipule, adnate at base to petiole, connate or free, leave paripinnate, rigid apically spinescent rachises persistent on perennial branches after the shedding of leaflets (Xu and Podlech 2010).…”

Section: Introductionmentioning

confidence: 95%

“…), Iran (2 spp.) and a few species also recorded from Tadzhikistan and Uzbekistan (Parker 1921;Gontscharov 1946;Podlech 2001;Chaudhary et al 2008;Xu and Podlech 2010;Podlech and Zarre 2013;Chaudhary and Siwakoti 2015;Khalili et al 2021;Maassoumi 2022). It is apparent that Pakistan is considered the second most important centers of distribution of this section (Maassoumi 2022).…”

Section: Introductionmentioning

confidence: 97%

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Comparative taxonomic investigation and its systematics application in Astragalus L. sect. Aegacantha Bunge (Fabaceae-Galegeae) from Pakistan; A phylogenetic approach

Khan,

Ahmad,

Sultan

et al. 2023

Preprint

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The species of Astragalus L. sect. Aegacantha Bunge, occurring in a specific geographical range comprises eighteen species present in Pakistan. The present study was circumscribed seventeen delimiting species within the section with morphological, anatomical and seed macro- and micromorphological characterizations. In morphological study, shape and size of stipule, calyx, vexillum, wing, keel, stamen, pistil and pod were assessed and illustrated. In spine anatomy most reliable characters i.e. (outline shape, cortical cell and collenchymatous layers, numbers of vascular bundles, types of sclerenchymatous and pith parenchymatous cells, diameter of dorsal-median and ventral lateral vascular bundles, diameter of pith) were studied. In addition, in seed macro- and micromorphology were assessed using stereomicroscopy and scanning electron microscopy in order to describe and evaluate the diagnostic features in the species. The seed shape, size, colour, surface ornamentation and epidermal cells features were most significant characters in the systematic implication of studied species. Therefore, UPGMA and cluster biplot (K-means cluster analysis) analyses were performed for the phylogenetic relationship among studied species within section. Further, based on studied characters taxonomic keys were constructed for easy and adequate identification of species. The results of this study contribute novelties traits that will be helpful in phylogenetic and evolutionary study of section Aegacantha.

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Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 97%

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Comparative taxonomic investigation and its systematics application in Astragalus L. sect. Aegacantha Bunge (Fabaceae-Galegeae) from Pakistan; A phylogenetic approach

Khan,

Ahmad,

Sultan

et al. 2023

Preprint

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“…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%

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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“…The internal transcribed spacer sequence (ITS) of the ribosomal DNA has been demonstrated to be an accurate source of information for examining molecular phylogeny in many plant families including the Fabaceae [ 27 , 28 ]. Indels in the ITS sequences are consistently present in most alternative alignments and are more reliable for phylogenetic analysis [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

Molecular Phylogeny of Trifolium L. Section Trifolium with Reference to Chromosome Number and Subsections Delimitation

Ahmed

Badr

El-Shazly

et al. 2021

Plants

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The genus Trifolium is one of the largest genera of the legume family Fabaceae with ca. 255 species. The genus is divided into eight sections; the section Trifolium is a major section of the genus, comprising 73 species mainly distributed in the Mediterranean region. We used nuclear ribosomal DNA internal transcribed spacer (ITS) and morphological variation to reconsider the delimitation and phylogenetic relationships of species in the section Trifolium with reference to chromosomal variations. Bayesian analysis of ITS data delimited the species as three clades based on the analysis of ITS sequence and informative indels in combination with morphological variation. The phylogeny of the species by different analyses methods does not support their current delimitation in 17 subsections. The basic chromosome number x = 8 is the number for the genus Trifolium, from which x = 7, 6 and 5 were derived through successive aneuploidy events. With reference to the distribution of these numbers in the species of the section Trifolium, species in clade III and clade II are more evolved than species in clade I.

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Phylogenetic relationships, biogeography and taxonomic delimitation of Astragalus sect. Acanthophace (Fabaceae) using cpDNA and nrDNA ITS sequences analyses

Cited by 6 publications

References 41 publications

Comparative taxonomic investigation and its systematics application in Astragalus L. sect. Aegacantha Bunge (Fabaceae-Galegeae) from Pakistan; A phylogenetic approach

Comparative taxonomic investigation and its systematics application in Astragalus L. sect. Aegacantha Bunge (Fabaceae-Galegeae) from Pakistan; A phylogenetic approach

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

Molecular Phylogeny of Trifolium L. Section Trifolium with Reference to Chromosome Number and Subsections Delimitation

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