First Nuclear DNA C-values for 28 Angiosperm Genera

Hanson, Lynda; Brown, Raymond Albert Joseph; Boyd, Amy E.; Johnson, Margaret A. T.; Bennett, M. D.

doi:10.1093/aob/mcg005

Cited by 45 publications

(40 citation statements)

References 21 publications

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“…Xiphidium caeruleum (2n = 38; Haemodoraceae) [119] to 1.6 pg in Hanguana malayana (2n = c. 170; Hanguanaceae) [109]. This narrow range reflects cytological data showing Haemodoraceae, Hanguanaceae, and Pontederiaceae to be characterised by possessing small to very small chromosomes.…”

Section: Commelinalesmentioning

confidence: 88%

Genome Size Dynamics and Evolution in Monocots

et al. 2010

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Monocot genomic diversity includes striking variation at many levels. This paper compares various genomic characters (e.g., range of chromosome numbers and ploidy levels, occurrence of endopolyploidy, GC content, chromosome packaging and organization, genome size) between monocots and the remaining angiosperms to discern just how distinctive monocot genomes are. One of the most notable features of monocots is their wide range and diversity of genome sizes, including the species with the largest genome so far reported in plants. This genomic character is analysed in greater detail, within a phylogenetic context. By surveying available genome size and chromosome data it is apparent that different monocot orders follow distinctive modes of genome size and chromosome evolution. Further insights into genome size-evolution and dynamics were obtained using statistical modelling approaches to reconstruct the ancestral genome size at key nodes across the monocot phylogenetic tree. Such approaches reveal that while the ancestral genome size of all monocots was small (1C = 1.9 pg), there have been several major increases and decreases during monocot evolution. In addition, notable increases in the rates of genome size-evolution were found in Asparagales and Poales compared with other monocot lineages.

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Section: Commelinalesmentioning

confidence: 88%

Genome Size Dynamics and Evolution in Monocots

et al. 2010

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“…Thus, an increase-decrease event of the repetitive sequences, which is related to transposable elements, directly contributes to unreplicated nomoploidy chromosome set in plant genome. Additionally, transposable elements, especially retrotransposons, cause repetitive DNA dispersing uniformly over all chromosomes of the genome (Kamm et al 1996;Galasso et al 1997;Heslop-Harrison et al 1997;Miller et al 1998;Vicient et al 1999;Hanson et al 2003). Indeed, the retrotransposons for size increasing occupied more than 40% and 90% of the genome in Vicia (Pearce et al 1996) and Triticum (Flavell 1986), respectivelly.…”

Section: Superimposing Chromosome Information and The Genome Size Datmentioning

confidence: 99%

Chromosome differentiation and genome organization in carnivorous plant family Droseraceae

2011

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ABSTRACT:A carnivorous plant lineage including the Droseraceae and its closely related family Drosophyllaceae shows wide range of chromosome size or genome size, whereas all other carnivorous families possess rather small in the genomes sizes. This study gives an overview of the genome size diversity in carnivorous plant families, and evolutional trend of chromosome differentiation especially in the Doroseraceae.

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“…Genome size in Myrsine had only been reported for Myrsine africana as 2C = 2.46 pg (Hanson et al 2003), which was measured by Feulgen microdensitometry using Vigna sp. as standard.…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies regarding the chromosome number in Primulaceae (s. APG 2016) are available for some genera, as: Cyclamen Linnaeus, 1753 (Bennett and Grimshaw 1991, Ishizaka 2003), Anagallis Linnaeus, 1753 (Aguilera et al 2011, Bennett and Leitch 2012), Lysimachia Linnaeus, 1753 (Baltisberger and Kocyan 2010, Bennett and Leitch 2012, Chalup and Seijo 2013), Androsace Linnaeus, 1753 (Chepinoga et al 2009), Elingamita Baylis, 1951 (Dawson 1995), Trientalis Linnaeus, 1753 (Vickery and Miller 2008), Ardisia Swartz, 1788 (Koyama and Kokubugata 1998), Primula Linnaeus, 1753 (Abou-El-Enain 2006, Casazza et al 2012, Theodoridis et al 2013), and Dodecatheon Linnaeus, 1753 (Oberle et al 2012), and Myrsine Linnaeus, 1753 (Beuzenberg and Hair 1983, Dawson 1995, 2000, Hanson et al 2003, Rice et al 2015). Except the genus Cyclamen and Myrsine , these taxa comprise annual and biennial herbaceous species.…”

Section: Introductionmentioning

confidence: 99%

First karyotype description and nuclear 2C value for Myrsine (Primulaceae): comparing three species

Carvalho¹,

Amaral-Silva²,

Spadeto³

et al. 2017

CCG

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Cytogenetic studies in Primulaceae are mostly available for herbaceous species, and are focused on the chromosome number determination. An accurate karyotype characterization represents a starting point to know the morphometry and class of the chromosomes. Comparison among species within Myrsine, associating these data with the nuclear 2C value, can show changes that led the karyotype evolution. Here, we studied three Myrsine species [Myrsine coriacea (Swartz, 1788) Brown ex Roemer et Schultes, 1819, Myrsine umbellata Martius, 1841 and Myrsine parvifolia Candolle, 1841] that show different abilities to occupy the varied types of vegetation within the Brazilian Atlantic Forest. Cytogenetic characterization showed some individuals with 2n = 45 chromosomes for Myrsine parvifolia and Myrsine coriacea, with most individuals of the three species having 2n = 46. The first karyograms for Myrsine were assembled and presented morphologically identical and distinct chromosome pairs. In addition, differences in the mean 2C nuclear value and chromosome morphometry were found. Therefore, the first description of the Myrsine karyotype has been presented, as well as the nuclear 2C value. The procedures can be applied to other Myrsine species for future investigations in order to better understand its effects on the differential spatial occupation abilities shown by the species in Brazilian Atlantic Forest.

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First Nuclear DNA C-values for 28 Angiosperm Genera

Cited by 45 publications

References 21 publications

Genome Size Dynamics and Evolution in Monocots

Genome Size Dynamics and Evolution in Monocots

Chromosome differentiation and genome organization in carnivorous plant family Droseraceae

First karyotype description and nuclear 2C value for Myrsine (Primulaceae): comparing three species

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