Non-equivalency of genera inAngiospermae: Evidence from DNA hybridization studies

Antonov, A. S.; Valiejo-Roman, K. M.; Пименов, М. Г.; Beridze, N. A.

doi:10.1007/bf00937296

Cited by 7 publications

(4 citation statements)

References 17 publications

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“…Our data are essentially congruent with the results of Shneer’s [75] (see also [76] and [77] ), who showed that serologically Hermodactylus , Gynandriris , Iris , Xiphion , Juno , Pardanthopsis , Iridodictyum , and Belamcanda are nested into two groups: (a.) Hermodactylus + Gynandriris on one side, and (b.)…”

Section: Discussionsupporting

confidence: 92%

At Least 23 Genera Instead of One: The Case of Iris L. s.l. (Iridaceae)

et al. 2014

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Background Iris L. s.l. is one of the most diverse and well-known genera in the Asparagales, with approximately 250–300 circumscribed species and significant economic impact. The taxonomy of the genus has suffered dramatic changes in the last century, particularly in the last decades after the application of molecular techniques. As a result several contrasting systematic arrangements are currently available to taxonomists. Many genera that were split from Iris s.str. in the past, on the basis of morphology (e.g., Hermodactylus, Iridodictyum, Juno, Pardanthopsis, and Xiphion, among others), are now a priori re-included in a very widely circumscribed Iris s.l. (incl. Belamcanda). This resulted in a more heterogeneous genus that is more difficult to define on morphological grounds. Testing congruence between taxonomic treatments and the results of recent molecular studies of Iris has never been performed, mostly due to the lack of proper taxonomic context.ResultsWe generated several conventional phylogenies for Iris & outgroups using extensive sampling of taxa (187) and characters (10 plastid loci). We demonstrate that the natural history of Iris, written either as conventional molecular phylogenies or, if viewing in the context of the comparative approach, as a nested most parsimonious hierarchy of patterns, appear to be fully congruent with the narrow taxonomical treatment of the genus, restricted to the rhizomatous “bearded” taxa. The resulting topologies place Belamcanda, Pardanthopsis, and Gattenhofia as sisters to Iris s.str. and genus Siphonostylis as sister to Iris s.l.ConclusionThe present study clearly justifies the splitting of Iris s.l. into at least 23 genera, 18 of which have already been accepted in the past by numerous authorities. These genera are characterized by unique combinations of partly overlapping morphological characters and biogeography. Moreover, nearly the same entities, which we here recognize at a generic rank, were for centuries frequently referred to by horticulturists as “working-name” groups.

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Section: Discussionsupporting

confidence: 92%

At Least 23 Genera Instead of One: The Case of Iris L. s.l. (Iridaceae)

et al. 2014

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“…These results departed considerably from traditional taxonomic treatments of the subfamily and have not gained much acceptance. Additional evidence has been obtained from examination of a plethora of chemical constituents and morphological and anatomical features (reviewed in Heywood, 1971 a, andCauwet-Marc andCarbonnier, 1982), and, more recently, DNA-DNA hybridization (Antonov et al, 1988), and serological (Shneyer et al, 1991(Shneyer et al, , 1992 investigations. However, despite this wealth of information, there has been little speculation of phylogenetic relationships within the subfamily, apart from assignment of tribes and subtribes, and no rigorous phylogenetic analysis encompassing a broad representation of taxa at the generic level.…”

mentioning

confidence: 97%

A Molecular Phylogeny of Apiaceae Subfamily Apioideae: Evidence from Nuclear Ribosomal DNA Internal Transcribed Spacer Sequences

Downie¹,

Katz-Downie²

1996

American Journal of Botany

113

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“…Despite the fact that the genus Iris has been studied extensively, there is no single system of it, and there are different opinions about its scope. The classification schemes are based on the comparison of anatomical-morphological and cytogenetic features [6][7][8][9], as well as on the results of molecular-biological and biochemical studies [10][11][12]. When compiling keys for determining the species of the genus Iris [13][14][15][16], the authors consider such traits as the color and size of the perianth lobes, the length of the ovary, the presence or absence of a barbule of multicellular hairs in the outer perianth lobes, the number of flowers on the peduncle, the height of the peduncle, the length and width of the leaves, the shape and nature of seed case opening, the ratio of seed case length to width, the shape of seeds and the nature of seed peel structure, the color of the roots, the nature of branching and the thickness of the rhizome, the flowering time, and some others.…”

Section: Introductionmentioning

confidence: 99%

Discussion of some taxonomy issues of species of the genus Iris L. based on biomorphological and karyological characteristics

2021

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A comparative analysis of ten taxa of the genus Iris was carried out based on biomorphological and karyological characteristics. The assessment of morphological variability structure allowed to identify taxonomic indicators common to the analyzed species and characterized by relatively low common and consistent variability: length and width of the outer perianth lobes, length and width of the inner perianth lobes, length of the stamen filament, anther and pistil, width of the fruit, as well as length and width of the seed. Based on the constructed phylogenetic relationships based on the identified taxonomic features, the studied species were grouped into conditional groups: 1. I. carthaliniae, I. halophila, I. spuria; 2. I. lactea; 3. I. pseudacorus, I. setosa; 4. I. sibirica, I. sanguinea; 5. I. graminea; 6. I. pumila, which is also consistent with chromosome numbers found by us in somatic tissue.

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Non-equivalency of genera inAngiospermae: Evidence from DNA hybridization studies

Cited by 7 publications

References 17 publications

At Least 23 Genera Instead of One: The Case of Iris L. s.l. (Iridaceae)

At Least 23 Genera Instead of One: The Case of Iris L. s.l. (Iridaceae)

A Molecular Phylogeny of Apiaceae Subfamily Apioideae: Evidence from Nuclear Ribosomal DNA Internal Transcribed Spacer Sequences

Discussion of some taxonomy issues of species of the genus Iris L. based on biomorphological and karyological characteristics

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