Karyological relationships among some South American species of Solanum (Solanaceae) based on fluorochrome banding and nuclear DNA amount

Acosta, María Cristina; Guerra, Marcelo; Moscone, Eduardo A.

doi:10.1007/s00606-012-0657-x

Cited by 19 publications

(20 citation statements)

References 31 publications

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“…This is the most frequent number for the genus and for Solanaceae as well, being present in more than 50% of the known species (cf. Acosta and Moscone 2000;Hunziker 2001;Acosta et al 2005Acosta et al , 2012. A few exceptions have been detected in Solanum within the Leptostemonum clade (S. mamosum and S. platense with n = 22; Chiarini and Bernardello 2006) and the Archaesolanum clade (seven species with n = 23; Pinto Maggio et al 1997).…”

Section: Discussionmentioning

confidence: 99%

“…Acosta et al 2005Acosta et al , 2012Rego et al 2009;Chiarini et al 2010;Melo et al 2011). In the Morelloid and Dulcamaroid clades, few karyotype studies have been conducted (Moscone 1992;Acosta et al 2005Acosta et al , 2012. Thus, in the present work, we provide a detailed morphometric karyotype analysis for 26 species, 13 of which are here reported for the first time.…”

Section: Introductionmentioning

confidence: 94%

“…Karyotypes have been reported for several American species of Solanum and have proved to be useful in differentiating taxa and evolutionary trends; for instance, Basarthrum (Bernardello and Anderson 1990), Lasiocarpa (Bernardello et al 1994), Leptostemonum (Chiarini and Bernardello 2006), and Solanum as a whole (e.g. Acosta et al 2005Acosta et al , 2012Rego et al 2009;Chiarini et al 2010;Melo et al 2011). In the Morelloid and Dulcamaroid clades, few karyotype studies have been conducted (Moscone 1992;Acosta et al 2005Acosta et al , 2012.…”

Section: Introductionmentioning

confidence: 99%

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Karyotypes of South American species of the Morelloid and Dulcamaroid clades (Solanum, Solanaceae)

2013

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A karyotypic study on South American representatives of the Morelloid and Dulcamaroid clades of Solanum was conducted to contribute to a better understanding of their relationships. Mitotic chromosomes of 26 species were examined (13 of which were previously unknown). All taxa presented 2n = 2x = 24 and had small chromosomes (less than 4 μm long) with the exception of S. crispum. Most species displayed symmetrical karyotypes, being 78% and 69% m, 19% and 25% sm and 3% and 6% st for the Morelloid and Dulcamaroid clades, respectively. Solanum crispum (Dulcamaroid clade) was unique by having mostly sm chromosomes and S. sinuatirecurvum (Morelloid clade) stood out with four st pairs and an exclusive pair of satellites in long arms. Solanum tripartitum was the sole entity exhibiting an sm pair with satellites. Most examined species of these clades resulted karyologically indistinguishable, based on conventionally stained mitotic chromosomes. Molecular analyses are needed to gain a better knowledge of the possible karyoevolutionary trends of both clades.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

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Karyotypes of South American species of the Morelloid and Dulcamaroid clades (Solanum, Solanaceae)

2013

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“…Fregonezi et al 2006;Fernandes et al 2009), Nicotiana (Kenton et al 1993;Lim et al 2000), Capsicum (Moscone et al 2007), Nierembergia (Acosta & Moscone 2010), Lycianthes, and Vassobia ). In the genus Solanum and in the Morelloid, and Dulcamaroid clades in particular, the cytogenetic knowledge is relatively scanty Acosta et al 2012;Moyetta et al 2013). Most examined species of these clades were karyologically indistinguishable based on conventionally stained mitotic chromosomes (Moyetta et al 2013).…”

Section: Methodsmentioning

confidence: 97%

Heterochromatin and rDNA patterns in Solanum species of the Morelloid and Dulcamaroid clades (Solanaceae)

Moyetta

Urdampilleta

Chiarini

et al. 2016

Plant Biosystems - An International Journal Dealing with all As

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The heterochromatin distribution and the position of 18-5.8-26S, and 5S rDNA loci were determined in 13 species of Solanum of the Morelloid and Dulcamaroid clades. The CMA/DAPI staining and FISH were employed. Two types of constitutive heterochromatin were determined: CMA + /DAPI − associated to NOR and CMA + /DAPI − distributed as terminal bands. In the Morelloid clade, CMA + /DAPI − bands were found in five species while in the Dulcamaroid clade, only S. angustifidum presented this feature. In the Morelloid clade, two to four 18-5.8-26S rDNA loci occupied terminal positions and two rDNA 5S loci were found with variable positions (terminal, intercalary, and centromeric). In the Dulcamaroid clade, two terminal 18-5.8-26S rDNA loci were detected with the exception of S. salicifolium which possessed four such loci and two to four 5S rDNA loci. Solanum crispum is the only species possessing the 5S in synteny with 18-5.8-26S rDNA loci. Karyotype features chromosome banding pattern as well as the location of ribosomal genes which varied among the species, reflecting the chromosome differentiation and evolutionary divergence. The findings obtained contributed to the development of tools that can be used for establishing chromosomic homeologies among species and hence to clarify their taxonomic relationships.

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“…These included 10 karyotype asymmetry parameters: Stebbins karyotype (SK; Stebbins, 1971), the mean of long-/short-arm ratio (MAR), the variation of long-/short-arm ratio (VAR), the variance of relative length of chromosomes (VRL), intrachromosomal asymmetry index (A 1 ; Zarco, 1986), interchromosomal asymmetry index (A 2 ; Zarco, 1986), degree of asymmetry of karyotype (A; Watanabe et al, 1999), dispersion index (DI; Lavania and Srivastava, 1992), karyotype asymmetry index (AI; Paszko, 2006), and asymmetry coefficient of karyotypes (As.K. ; Arano, 1963); two karyotype symmetry parameters: index of karyotype symmetry (Syi) and index of chromosomal size resemblance (Rec; Venora et al, 2002); and one parameter reflecting total haploid chromosome length (THCL; Levin, 2002;Peruzzi et al, 2009;Acosta et al, 2012). All of the karyotype parameters were the mean values of each split phase.…”

Section: Calculation Of Karyotype Parametersmentioning

confidence: 99%

Karyotype diversity analysis and nuclear genome size estimation for Pennisetum Rich. (Poaceae) ornamental grasses reveal genetic relationship and chromosomal evolution

Zhang¹,

Yuan²,

Teng³

et al. 2015

Scientia Horticulturae

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Karyological relationships among some South American species of Solanum (Solanaceae) based on fluorochrome banding and nuclear DNA amount

Abstract: Fluorescent chromosome banding and measurements of nuclear DNA content by image cytometry of Feulgen-stained cells were performed in one sample each of eight diploid (2n = 24) species of Solanum:

Cited by 19 publications

References 31 publications

Karyotypes of South American species of the Morelloid and Dulcamaroid clades (Solanum, Solanaceae)

Karyotypes of South American species of the Morelloid and Dulcamaroid clades (Solanum, Solanaceae)

Heterochromatin and rDNA patterns in Solanum species of the Morelloid and Dulcamaroid clades (Solanaceae)

Karyotype diversity analysis and nuclear genome size estimation for Pennisetum Rich. (Poaceae) ornamental grasses reveal genetic relationship and chromosomal evolution

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