Phenology and Genome Size Variation in <i>Allium</i> L. ‐ a Tight Correlation?

Ohri, Deepak; Pistrick, Klaus

doi:10.1055/s-2001-19362

Cited by 40 publications

(28 citation statements)

References 17 publications

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“…Polyploidization and chromosomal rearrangements are thought to generate reproductive isolation or prevent recombination in linkage groups that contain ecologically important loci, thereby playing a role in speciation (Riese berg 2001 ; Lonnig and Saedler 2002). Fluctuations in chromosome number and genome size have also been correlated with a number of morphological and environmental variables in plants, which can generate novel phenotypes that lead to habitat divergence (Levin 1983;Bennett 1987;Grime 1998;Ohri et al 1998;Watanabe et al 1999;Bennett et al 2000;Givnish et al 2000;Gregory 2002;Osborn et al 2003).…”

Section: Phylogenomics Of Asparagales: Necessity and Criteria For Devmentioning

confidence: 99%

“…Genome size measurements are beginning to be mapped onto phylogenetic trees because they play a role in plant systematics at several taxonomic levels, from intraspecific variation within species to comparisons among genera and families (Grime 1998;Ohri 1998;Soltis eta!. 2003).…”

Section: Mitochondrial Evolution and Telomere Composition Inmentioning

confidence: 99%

“…First, surveys of chromosome number and genome sizes now include representatives from all Asparagales except two families (Boryaceae and Lanariaceae; Hanson et al 2003). More detailed studies of genome sizes within genera have included Allium (Ohri 1998) and the slipper orchids (Cox et al 1998). Second, studies that showed the lack of Arabidopsis-like telomeres in Allium (Pich et al 1996a, b;Pich and Schubert 1998) have been followed up to demonstrate their absence in Aloe (Adams et a!.…”

Section: Introductionmentioning

confidence: 99%

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Phylogeny, Genome Size, and Chromosome Evolution of Asparagales

Pires¹,

Maureira²,

Givnish³

et al. 2006

aliso

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Asparagales are a diverse monophyletic order that has numerous species (ca. 50% of monocots) including important crop plants such as Allium, Asparagus, and Vanilla, and a host of ornamentals such as irises, hyacinths, and orchids. Historically, Asparagales have been of interest partly because of their fascinating chromosomal evolution. We examine the evolutionary dynamics of Asparagales genomes in an updated phylogenetic framework that combines analyses of seven gene regions (atpl, atpB, matK, ndhF, rbcL, trnL intron, and trnL-F intergenic spacer) for 79 taxa of Asparagales and outgroups. Asparagales genomes are evolutionarily labile for many characters, including chromosome number and genome size. The history and causes of variation in chromosome number and genome size remain unclear, primarily because of the lack of data in small clades in the phylogenetic tree and the lack of comparative genetic maps, apart from Allium and Asparagus. Genomic tools such as bacterial artificial chromosome (BAC) libraries should be developed, as both molecular cytogenetic markers and a source of nuclear genes that can be widely used by evolutionary biologists and plant breeders alike to decipher mechanisms of chromosomal evolution.

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Section: Phylogenomics Of Asparagales: Necessity and Criteria For Devmentioning

confidence: 99%

Section: Mitochondrial Evolution and Telomere Composition Inmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phylogeny, Genome Size, and Chromosome Evolution of Asparagales

Pires¹,

Maureira²,

Givnish³

et al. 2006

aliso

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“…previous studies (Vakhtina & Kudryashova 1982;Kollmann 1984;Özhatay 1984;Ohri et al 1998;Ohri & Pistrick 2001). There is only one report of 2n = 16 for A. cyrilli by Karavokyrou & Tzanoudakis (1991) from Greece.…”

Section: Karyological Studymentioning

confidence: 94%

Taxonomic data supporting differences between Allium elmaliense and Allium cyrilli

et al. 2013

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The first specimens of Allium elmaliense were collected in Elmalı (Antalya/Turkey) in 2001 and were described as new species in 2004. However, Allium elmaliense was claimed as synonym of Allium cyrilli in 2006. This study was undertaken to reveal the differences between these taxa utilizing morphological, palynological, and chromosome characters and genomic differences based on the DNA analyses along with the ecological preference studies conducted during 2006 and 2011. The results clearly indicated differences between these two taxa in terms of morphological characters, pollen, seed surfaces and niche preferences. Chromosome morphology and Td-DAMD-PCR fingerprinting studies revealed that Allium elmaliense Deniz & Sümbül is a distinct species and not a synonym of A. cyrilli Ten.

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“…Diploid plants are reported from European Turkey (Özhatay et al 1993), Italy (Löve & Löve 1982), Macedonia (Šopova 1972), Slovenia (Murin & Feráková 1988), British and Irish Isles (Al-Bermani et al 1993), Belarus (Semerenko, cited in Agapova et al 1990), Sweden (Lövkvist & Hultgård 1999). The triploids are registered in Germany (Ohri & Pistrick 2001) and the Czech Republic (Měsíček & Javůrková-Jarolímová 1992). The tetraploids are the rarest ploidy level in A. scorodoprasum and are found in Turkey (Özhatay 2002), Italy (Jacobsen & Ownbey 1977) and the Netherlands (e.g.…”

Section: Introductionmentioning

confidence: 99%

Geographical separation of diploid and triploid cytotypes of Allium scorodoprasum in Lithuania

Karpavičienė

2013

Biologia

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The aim of this study was to determine the geographical and ecological distribution of Allium scorodoprasum cytotypes in Lithuania. 46 populations were studied: environmental variables were recorded and somatic chromosome numbers of 797 individuals from all populations were assessed. Diploids were found in 13 populations in the northern part of the study area, while triploids occurred in 33 populations from the western part of Lithuania. A. scorodoprasum frequently occurred in river valleys, particularly in the rarely flooded high level floodplains or on lower terraces. Only one population was recorded in Alno-Ulmion forest and three on the Glechometalia hederaceae forest edges, while 42 populations occurred in mesophilous or semidry Arrhenatheretalia elatioris, Mesobromion erecti and Trifolio-Geranietea sanguinei grasslands. No distinct differences in relative frequencies of diploid and triploid cytotypes in different plant communities were found whereas the soil chemical composition between the habitats of both cytotypes differed statistically. These differences however were indicative of the geographical separation of habitats rather than ecological differentiation between the two cytotypes. The results suggest that there were at least two separate roads of colonization of diploid and triploid A. scorodoprasum into Lithuania.

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Phenology and Genome Size Variation in Allium L. ‐ a Tight Correlation?

Cited by 40 publications

References 17 publications

Phylogeny, Genome Size, and Chromosome Evolution of Asparagales

Phylogeny, Genome Size, and Chromosome Evolution of Asparagales

Taxonomic data supporting differences between Allium elmaliense and Allium cyrilli

Geographical separation of diploid and triploid cytotypes of Allium scorodoprasum in Lithuania

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