Genome size variation in<i>Hordeum spontaneum</i>populations

Turpeinen, Timo; Kulmala, Johanna; Nevo, Eviatar

doi:10.1139/g99-066

Cited by 44 publications

(26 citation statements)

References 33 publications

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“…Hordeum spontaneum, where genome size for populations representing wide ecological and geographical differences were measured, statistically significant variation up to 5% was found (Turpeinen et al 1999). This is also the case of Armeria maritima in which genome size variation of 7% was related to geographic origin (Vekemans et al 1996).…”

Section: Resultsmentioning

confidence: 78%

Genome size variation in the Artemisia arborescens complex (Asteraceae, Anthemideae) and its cultivars

Garcia¹,

Garnatje²,

Twibell³

et al. 2006

Genome

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Different wild Mediterranean populations of Artemisia arborescens from diverse locations, representing its geographical distribution, as well as some of its well-known cultivars and some specimens cultivated as omamentals in gardens, streets, roads and nurseries, were analysed for genome size estimation. Other closely related species endemic to Macaronesia, A. canariensis, A. argentea and A. gorgonum, were also measured, and their nuclear DNA amount has been related to the biogeography of this group of species. Additionally, five populations of the closely related A. absinthium were analysed to establish comparisons. Measurements, acquired by flow cytometry, ranged from 8.29 pg to 11.61 pg for 2C values. Statistically significant differences of nuclear DNA amounts with respect to factors such as insularity or domestication have been detected. However, a quite low intraspecific genome size variation has been detected in these species. Furthermore, the study also addressed the possible hybrid origins, and possible misidentifications of some of the supposed cultivars ofA. arborescens..

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Section: Resultsmentioning

confidence: 78%

Genome size variation in the Artemisia arborescens complex (Asteraceae, Anthemideae) and its cultivars

Garcia¹,

Garnatje²,

Twibell³

et al. 2006

Genome

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“…It is becoming more and more evident, however, that genome size varies according to the population and even the individual concerned, and depends on various exogenous factors, the main effects of which seem to be the mobilization and increase in the copy number of transposable elements (2,7,32). Various correlations between genome size and latitude, altitude, temperature, light (9,12,13,33), developmental rate (5), etc., are well documented, especially across species. Because the environment in which an organism grows seems to influence DNA content (6), it is concluded that genome size variation is an adaptation to changing environment.…”

Section: Discussionmentioning

confidence: 99%

“…(10,11) and environmental conditions (altitude, latitude, temperature, etc.) (12,13) have suggested that natural selection could be involved in regulating genome size, although a change in size is primarily due to the genome's tolerance for repeated sequences (5) and its ability to mobilize them (14). Intra-species variation in genome size has also been shown to be associated with environmental conditions in plants, and seems to involve mobilization of some transposable elements in plants (15), Drosophila (14,16), and pocket gophers (17).…”

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confidence: 99%

Variation of the genome size estimate with environmental conditions in Drosophila melanogaster

et al. 2003

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Background: Genome size is known to exhibit interspecies differences, but also to vary between populations within a given species and even between individual cells within an organism. Major differences have often been reported and attributed to differences in measurement conditions, in internal controls of genome size, and in the stains used. Flow cytometry using intercalating dyes is the most attractive method for measuring genome size. Methods: We estimated relative genome size of nuclei from heads of Drosophila melanogaster adult males using a FACScalibur flow cytometer and propidium iodide. Results: We have shown that the genome size estimates depended on the temperature and humidity of the rearing medium and decreased with age in adult flies. There were large differences in genome size estimates between the vials in which the flies were maintained, but only slight variations within the vials, supporting the idea that the

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“…The hybrid of male C. pandurata × female C. rumphii has a length of 2,85 ± 0,14 µm, and the hybrid of female C. pandurata × male C. rumphii has a length of 2,50 ± 0,10 µm with length ratio 1,08 ± 0,05 µm to 1,23 ± 0,07 µm. Genome size can affect the cellular parameters, such as cell size, and nucleotypic effects can have an impact on important characteristics such as growth and yield (Turpeinen et al 1999;Walker et al 2006). Truta et al (2013), states that the karyotype with metacentric and submetacentric chromosome types are considered primitive and least developed, because they are not supported restructuration and significant genetic rearrangements during evolution.…”

Section: Resultsmentioning

confidence: 99%

Short Communication: Cytological studies on black orchid hybrid (Coelogyne pandurata Lindley)

et al. 2017

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Abstract. Hartati S, Nandariyah, Yunus A, Djoar DW. 2017. Cytological studies on black orchid hybrid (Coelogyne pandurata Lindley). Biodiversitas 18: 555-559. Black orchid (Coelogyne pandurata Lindley) is one of the rare species of Coelogyne Lindley, protected by the government of Indonesia. The cytological character of orchid is very important to study to support the success of breeding. The study aimed to assess the chromosomal number, karyotype pattern and ploidy level the hybrid of Black Orchid (Coelogyne pandurata). This study shows that the chromosomal number of the hybrid of Coelogyne pandurata (2n = 36) >< Coelogyne rumphii (2n = 72) is 2n = 54. Ploidy analysis by flow cytometry shows that hybrid shows triploid (2n = 3x = 54) different from the parent Coelogyne pandurata which is diploid (2n = 2x = 36) and the parent Coelogyne rumphii which is tetraploid (2n = 4x = 72). However, both parents and their hybrid performed the same karyotype pattern, which is metacentric. The chromosome size showed a variation in length from the longest Coelogyne pandurata 2.98 ± 0.15 µm to the shortest Coelogyne rumphii 2.24 ± 0.15 µm. The hybrids have a range of 2.50 ± 0,10 µm to 2.85 ± 0.10 µm. Karyotype patterns of black orchid (C. pandurata), C. rumphii and the hybrid is metacentric.

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Genome size variation inHordeum spontaneumpopulations

Cited by 44 publications

References 33 publications

Genome size variation in the Artemisia arborescens complex (Asteraceae, Anthemideae) and its cultivars

Genome size variation in the Artemisia arborescens complex (Asteraceae, Anthemideae) and its cultivars

Variation of the genome size estimate with environmental conditions in Drosophila melanogaster

Short Communication: Cytological studies on black orchid hybrid (Coelogyne pandurata Lindley)

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