Phylogenetic analysis of Allium subg. Melanocrommyum infers cryptic species and demands a new sectional classification

Gurushidze, Maia; Fritsch, Reinhard; Blattner, Frank R.

doi:10.1016/j.ympev.2008.09.003

Cited by 56 publications

(53 citation statements)

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“…In A. rosenorum and A. darwasicum, morphologically cryptic lineages were phylogenetically clearly separated by molecular data (ITS sequences and fingerprint markers; Gurushidze et al 2008), and they also differed in genome sizes. Two species showing intraspecific genome size variation (A. cardiostemon and A. fetisowii) are not polyphyletic according to ITS sequences.…”

Section: Discussionmentioning

confidence: 99%

“…2. Phylogenetic tree resulting from a Bayesian analysis of ITS sequences of subgenus Melanocrommyum (from Gurushidze et al 2008). Gray double-lines indicate branches not present in the strict consensus (MP) tree.…”

Section: Discussionmentioning

confidence: 99%

“…Nevertheless, the range of variation of genome size between different accessions seems high compared to the "normal" range of variation (up to 3% of measured genome size for most taxa). Although it is possible that the genetic differentiation within these species is too young for the resolution of the molecular markers used (Gurushidze et al 2008(Gurushidze et al , 2010, the hypothesis that differences in genome size in A. shelkovnikovii and A. alexeianum are the result of ancient introgression, is also plausible. Although we obtained no indication for the occurrence of B chromosomes in the karyotyped species, Fritsch and Astanova (1998) reported the presence of B chromosomes in one species of Melanocrommyum, thus the hypothesis that differences in genome size in A. shelkovnikovii and A. alexeianum are due to B chromosomes cannot be ruled out.…”

Section: Discussionmentioning

confidence: 99%

“…Phylogenetic Analyses-Phylogenetic relationships of Melanocrommyum species were based on a study by Gurushidze et al (2008), which used sequences of the nrDNA ITS to infer phylogenetic relationships. The analyses presented here were based on a simplified Bayesian tree (Fig.…”

Section: Methodsmentioning

confidence: 99%

“…In total, 12 well-supported groups (A-L) were circumscribed according to the ITS phylogeny (Fig. 2) (Gurushidze et al 2008). The variation of genome size among the defined phylogenetic clades is represented in a box plot (Fig.…”

Section: Genome Size Variation In Subgenus Melanocrommyum-mentioning

confidence: 99%

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The Evolution of Genome Size Variation in Drumstick Onions (Allium subgenus Melanocrommyum)

Gurushidze¹,

Fuchs²,

Blattner³

2012

issn: 0363-6445

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Genome Size Variation In Subgenus Melanocrommyum-mentioning

confidence: 99%

See 3 more Smart Citations

The Evolution of Genome Size Variation in Drumstick Onions (Allium subgenus Melanocrommyum)

Gurushidze¹,

Fuchs²,

Blattner³

2012

issn: 0363-6445

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The evolution of the Aristolochia pallida complex (Aristolochiaceae) challenges traditional taxonomy and reflects large‐scale glacial refugia in the Mediterranean

Krause

Oelschlägel

Mahfoud

et al. 2022

Ecology and Evolution

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The taxonomy of the Mediterranean Aristolochia pallida complex has been under debate since several decades with the following species currently recognized: A . pallida , A . lutea , A . nardiana , A . microstoma , A . merxmuelleri , A . croatica , and A . castellana . These taxa are distributed from Iberia to Turkey. To reconstruct phylogenetic and biogeographic patterns, we employed cpDNA sequence variation using both noncoding (intron and spacer) and protein‐coding regions (i.e., trnK intron, matK gene, and trnK ‐ psbA spacer). Our results show that the morphology‐based traditional taxonomy was not corroborated by our phylogenetic analyses. Aristolochia pallida , A . lutea , A . nardiana , and A . microstoma were not monophyletic. Instead, strong geographic signals were detected. Two major clades, one exclusively occurring in Greece and a second one of pan‐Mediterranean distribution, were found. Several subclades distributed in Greece, NW Turkey, Italy, as well as amphi‐Adriatic subclades, and a subgroup of southern France and Spain, were revealed. The distribution areas of these groups are in close vicinity to hypothesized glacial refugia areas in the Mediterranean. According to molecular clock analyses the diversification of this complex started around 3–3.3 my, before the onset of glaciation cycles, and the further evolution of and within major lineages falls into the Pleistocene. Based on these data, we conclude that the Aristolochia pallida alliance survived in different Mediterranean refugia rarely with low, but often with a high potential for range extension, and a high degree of morphological diversity.

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Seed characters and testa sculptures of some Iranian Allium L. species (Alliaceae)

Neshati

Fritsch

2009

Feddes Repertorium

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Seed characters and testa sculptures of some Iranian Allium L. species (Alliaceae)With 20 Figures, 2 Tables and one Plate Summary Seeds taken from herbarium specimens of 20 Allium taxa were investigated. The seeds of all species were black ranging from 1.7 mm (A. lamondiae) to 4 mm (A. altissimum and A. stipitatum) in length and 1 mm (A. lamondiae) to 3 mm (A. altissimum) in width. So, A. lamondiae had the smallest and A. altissimum the largest seeds. In the mean, the members of subg. Melanocrommyum had somewhat larger and the species of sect. Avulsea somewhat smaller seeds than most species belonging to other groups. The shape was generally ovate or variants of it and showed only slight differences between members of different sections.The seed coat pattern was more variable. Most common were convex, granulate periclinal walls bearing several verrucae. Only A. borszczowii showed flat, densely granulate periclinal walls without verrucae, and A. bungei and A. joharchii had somewhat verruca-like aggregating grana. The majority of the species investigated showed S-like, rarely Omega-like, undulated anticlinal walls with variable wavelengths and amplitudes. The testa cells of A. joharchii showed transitions to straight anticlinal walls. More or less straight anticlinal walls in A. kopetdagense, A. paradoxum, A. barsczewskii, and A. scabriscapum were connected with the presence of a strip-like widened and transversally striated intercellular region covering these walls.The seed coat pattern of most species corresponded well to earlier reports of the same or closely related species, or was at least already reported for not related Allium species. Only A. borszczowii and A. monophyllum displayed testa types earlier not reported.

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Phylogenetic analysis of Allium subg. Melanocrommyum infers cryptic species and demands a new sectional classification

Cited by 56 publications

References 44 publications

The Evolution of Genome Size Variation in Drumstick Onions (<I>Allium</I> subgenus <I>Melanocrommyum</I>)

The Evolution of Genome Size Variation in Drumstick Onions (<I>Allium</I> subgenus <I>Melanocrommyum</I>)

The evolution of the Aristolochia pallida complex (Aristolochiaceae) challenges traditional taxonomy and reflects large‐scale glacial refugia in the Mediterranean

Seed characters and testa sculptures of some Iranian Allium L. species (Alliaceae)

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