Characterization of geographically isolated accessions in five Alstroemeria L. species (Chile) using FISH of tandemly repeated DNA sequences and RAPD analysis

Baeza, C.; Schrader, Otto; Budahn, Holger

doi:10.1007/s00606-007-0591-5

Cited by 39 publications

(27 citation statements)

References 46 publications

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“…From the previous information, the size of 45S rDNA site might vary among the cucumber cultivars. The similar phenomenon has been observed in several plant species (Schubert and Wobus 1985, Hall and Parker 1995, Galasso et al 1998, Baeza et al 2007, and such a difference often occurs in a process of the speciation in plants ( Thomas et al 1996, Skalicka et al 2003. Variation of numbers of the rDNA site in cucumber, which was observed as a difference of small rDNA site, might be due to variation of copy number of rDNA sequence and/or difference of FISH procedure.…”

Section: Discussionsupporting

confidence: 73%

Cytogenetic comparison among three cultivars of cucumber (Cucumis sativus L.) by using post-heated DAPI band, 45S and 5S rDNA sites

et al. 2009

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ABSTRACT. The positions of heterochromatic bands, 45S and 5S rDNA regions were detected on the chromosomes in three cultivars of cucumber (Cucumis sativus L.). The post-heated DAPI bands, which revealed heterochromatic region, were observed on the both terminal and pericentromeric regions of most of the chromosomes in three cultivars. However, these band patterns were different between European and Eastern Asian cultivars. The major 45S rDNA sites were found around the centoromeric region of the chromosomes 1, 2 and 5, and the minor 45S rDNA sites were found around centoromeric region of the chromosomes 3 and 7. The positional variation of this region was not found among three cultivars, but size difference was observed in the chromosome 5. The 5S rDNA site was observed on the interstitial region of the chromosome 6 in all of the cultivars studied. These results indicated that the variation of chromosome structure among cucumber cultivars occurred in the heterochromoatic region and suggested that the genetic variation in cucumber cultivars would be revealed by strict analysis and comparison for the position and size of heterochromatic region.

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Section: Discussionsupporting

confidence: 73%

Cytogenetic comparison among three cultivars of cucumber (Cucumis sativus L.) by using post-heated DAPI band, 45S and 5S rDNA sites

et al. 2009

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“…Sone et al (1999) suggested that the insertion of 5S rDNA into 45S rDNA had taken place after the divergence from land plants because the co-localization of 5S and 45S rDNAs has been reported in some lower eukaryotes whereas not found in any spermatophytes. Thereafter, FISH analyses have revealed that a part or all of 5S rRNA loci in the chromosome complement co-localizes with 45S rRNA loci in a few species of spermatophytes, such as Podocarpus (Murray et al 2002), Ginkgo (Nakao et al 2005), Linum (Muravenko et al 2004), Rhoeo (Golczyk et al 2005), Hordeum (Taketa et al 2005) and Alstroemeria (Baeza et al 2007). In addition to the plant species, 120 Cytologia 74(2) H. Matoba and H. Uchiyama Fig.…”

Section: Discussionmentioning

confidence: 99%

Physical Mapping of 5S rDNA, 18S rDNA and Telomere Sequences in Three Species of the Genus Artemisia (Asteraceae) with Distinct Basic Chromosome Numbers

Matoba

Uchiyama

2009

CYTOLOGIA

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Summary Fluorescence in situ hybridization (FISH) with both of 5S and 18S rDNAs, and Arabidopsis-type telomere sequences was carried out in 3 species of the genus Artemisia (Asteraceae) with different basic chromosome numbers, xϭ8, 9 and 17, to understand their chromosomal organization and evolution. Chromosomal distribution of telomere sequences, which was restricted only to the ends of all chromosomes, was reported here for the first time in this genus. Although 5S rRNA gene loci are generally localized independently of 45S rRNA gene loci in eukaryotic chromosomes, all of the 5S rDNA sites are the same number and co-localized with the 18S rDNA sites in the species investigated. We also discussed the chromosomal evolution of A. feddei (xϭ8) and A. princeps (xϭ17) having a derivative basic chromosome number in this genus.

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“…Además de los caracteres indicados en la clave anterior, hay una serie de otros antecedentes que permiten reconocer a esta nueva subespecie entre las asignadas al complejo A. hookeri. Baeza et al (2007) reconocen diferencias notables en el cariotipo y en la ubicación de genes ribosomales entre las poblaciones costeras y las del interior. Cajas et al (2009) en un detallado estudio poblacional en A. hookeri subsp.…”

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Alstroemeria hookeri Lodd. subsp. sansebastiana C.M.Baeza & E.Ruiz, nueva para la flora de Chile

Baeza¹,

Ruíz²

2011

Gayana Bot.

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Characterization of geographically isolated accessions in five Alstroemeria L. species (Chile) using FISH of tandemly repeated DNA sequences and RAPD analysis

Cited by 39 publications

References 46 publications

Cytogenetic comparison among three cultivars of cucumber (Cucumis sativus L.) by using post-heated DAPI band, 45S and 5S rDNA sites

Cytogenetic comparison among three cultivars of cucumber (Cucumis sativus L.) by using post-heated DAPI band, 45S and 5S rDNA sites

Physical Mapping of 5S rDNA, 18S rDNA and Telomere Sequences in Three Species of the Genus Artemisia (Asteraceae) with Distinct Basic Chromosome Numbers

Alstroemeria hookeri Lodd. subsp. sansebastiana C.M.Baeza & E.Ruiz, nueva para la flora de Chile

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