Chromosome weights and measures in Petunia

White, J. L.; Rees, H.

doi:10.1038/hdy.1987.18

Cited by 11 publications

(9 citation statements)

References 10 publications

(6 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The resulting high-quality assemblies have a size of 1.26 Gb for P. axillaris and 1.29 Gb for P. inflata (Table 1). The estimated size of both genomes is 1.4 Gb, using a k-mer size of 31, which is consistent with previous microdensity measurements 9 . We have remapped Illumina reads to the assemblies and called single nucleotide polymorphism (SNPs) to estimate the level of heterozygosity, which is estimated as 0.03% for both accessions.…”

Section: Resultssupporting

confidence: 77%

Insight into the evolution of the Solanaceae from the parental genomes of Petunia hybrida

et al. 2016

View full text Add to dashboard Cite

Petunia hybrida is a popular bedding plant that has a long history as a genetic model system. We report the whole-genome sequencing and assembly of inbred derivatives of its two wild parents, P. axillaris N and P. inflata S6. The assemblies include 91.3% and 90.2% coverage of their diploid genomes (1.4 Gb; 2n = 14) containing 32,928 and 36,697 protein-coding genes, respectively. The genomes reveal that the Petunia lineage has experienced at least two rounds of hexaploidization: the older gamma event, which is shared with most Eudicots, and a more recent Solanaceae event that is shared with tomato and other solanaceous species. Transcription factors involved in the shift from bee to moth pollination reside in particularly dynamic regions of the genome, which may have been key to the remarkable diversity of floral colour patterns and pollination systems. The high-quality genome sequences will enhance the value of Petunia as a model system for research on unique biological phenomena such as small RNAs, symbiosis, self-incompatibility and circadian rhythms.

show abstract

Section: Resultssupporting

confidence: 77%

Insight into the evolution of the Solanaceae from the parental genomes of Petunia hybrida

et al. 2016

View full text Add to dashboard Cite

show abstract

“…In addition, nuclear DNA content of C. parvi¯ora obtained in the present study (1 . 91 pg) was comparable with that reported by White and Rees (1987) (1 . 71 pg) as mentioned earlier.…”

Section: Chromosome Numbersupporting

confidence: 81%

“…9 pg (FMD; Bennett et al, 1982), 2 . 73 pg (FMD; White and Rees, 1987) and 2 . 64 pg (FCM; Arumuganathan and Earle, 1991).…”

Section: Comparison With Previous Studiesmentioning

confidence: 99%

Nuclear DNA Content as an Index Character Discriminating Taxa in the Genus Petunia sensu Jussieu (Solanaceae)

Mishiba¹,

Ando²,

Mii³

et al. 2000

Annals of Botany

View full text Add to dashboard Cite

Nuclear DNA contents over the total range of the genus Petunia sensu Jussieu comprising 20 taxa of Petunia sensu Wijsman (2n 2x 14) and 32 taxa of Calibrachoa (2n 2x 18) were estimated by¯ow cytometry after staining the nuclei with propidium iodide (PI) or 4H ,6-diamidino-2-phenylindole (DAPI). With respect to nuclear DNA content, taxa of Petunia sensu Wijsman seemed to be homogeneous (2C 2 . 60 to 3 . 41 pg), but Calibrachoa taxa were clearly separated into two groups: (1) C. parvi¯ora and C. pygmaea (1 . 56 to 1 . 91 pg); and (2) remaining members of Calibrachoa (2 . 84 to 3 . 26 pg). Taxa of Petunia sensu Wijsman exhibited larger PI/DAPI ratios (relative¯uorescence intensity with PI staining to that with DAPI staining) than Calibrachoa species except C. parvi¯ora and C. pygmaea. This suggests that Petunia sensu Wijsman has nuclear DNA with more adenine-thymine rich regions than Calibrachoa.# 2000 Annals of Botany Company

show abstract

“…Provided that the nuclear DNA content is proportional to the nuclear volume and the nuclear volume to the cell volume, endopolyploidization cycles could speed up growth (and development) and compensate for small genome size by saving time, energy and material required for mitotic division. some area, chromosome length and DNA content of 12 diploid rice species (Uozo et al, 1997), between the total volume of centromeres per nucleus and the C-value Leitch, 2004, 2005), between nuclear dry mass and DNA content of Petunia species (White and Rees, 1987) and between rRNA gene copy number and DNA content across a wide range of plant taxa (Prokopowich et al, 2003), were also reported. Furthermore, it was assumed that in eukaryotes the initiation of DNA replication and subsequent cell division depends on the attainment of a critical cell volume (Fantes et al, 1976).…”

mentioning

confidence: 99%

Nuclear DNA content and nuclear and cell volume are positively correlated in angiosperms

Jovtchev

Schubert

Meister

et al. 2006

Cytogenet Genome Res

134

View full text Add to dashboard Cite

Volumes of flow sorted nuclei were analyzed from two highly endopolyploid (diploids with endopolyploid tissues) species (Arabidopsis thaliana and Barbarea stricta), from a less endopolyploid species (Allium cepa) and from two non-endopolyploid species (Chrysanthemum multicolor and Fritillaria uva-vulpis). Intraspecific as well as interspecific comparisons revealed a highly positive correlation (r >0.99) between DNA content and nuclear volume. No significant differences between expected and measured nuclear volumes were noted indicating that chromatin packing is not increased with increasing DNA content in the tested plant species. In epidermis cells of A. thaliana, A. cepa and Ch. multicolor, a lower (r between 0.6 and 0.7) but significant positive correlation between nuclear volume and cell volume was found. This correlation is compatible with the hypothesis that endopolyploidization (EP = consecutive replication cycles not separated by nuclear and cell divisions) might speed up the growth of endopolyploid species and compensate for small genome size.

show abstract

Chromosome weights and measures in Petunia

Cited by 11 publications

References 10 publications

Insight into the evolution of the Solanaceae from the parental genomes of Petunia hybrida

Insight into the evolution of the Solanaceae from the parental genomes of Petunia hybrida

Nuclear DNA Content as an Index Character Discriminating Taxa in the Genus Petunia sensu Jussieu (Solanaceae)

Nuclear DNA content and nuclear and cell volume are positively correlated in angiosperms

Contact Info

Product

Resources

About