Genome sizes through the ages

@article{Leitch2007GenomeST,
  title={Genome sizes through the ages},
  author={Ilia J. Leitch},
  journal={Heredity},
  year={2007},
  volume={99},
  pages={121-122}
}
  • I. Leitch
  • Published 13 June 2007
  • Biology
  • Heredity
The enormity of the c. 40 000-fold range in genome size (genome size or 1C nuclear DNA amount refers to the amount of DNA in the unreplicated gametic nucleus (e.g. pollen or sperm) and is usually measured in picograms (pg) or base pairs (bp); 1 pg1 billion bp1000 Mb) in eukaryotes and the lack of correlation with organismal complexity have intrigued scientists for over half a century. People have asked how and why genomes vary so extensively and whether it matters. The recent paper by Organ et… 
Genome Size Dynamics and Evolution in Monocots
TLDR
This paper compares various genomic characters between monocots and the remaining angiosperms to discern just how distinctive monocot genomes are, and it is apparent that different monOCot orders follow distinctive modes of genome size and chromosome evolution.
Genome Size and Chromosome Number Relationship Contradicts the Principle of Darwinian Evolution from Common Ancestor
TLDR
Results of this study contradict the principle of Darwinian evolution from common ancestor and support the independent appearance of living organisms on earth based on genome size.
Patterns and biological implications of DNA content variation in land plants
TLDR
Two measures of DNA content were examined in taxa across the land plant phylogeny: genome size and endopolyploidy (or endoreduplication index, EI) and the relationships between DNA content and various morphological and ecological traits were assessed.
Genome size scaling through phenotype space.
TLDR
The results show that genome size is a strong predictor of phenotypic traits at the cellular level (guard cell length and epidermal cell area had significant positive relationships with genome size), and the predictive power of genome size generally diminishes at higher phenotypesic scales.
Genome duplication in amphibians and fish: an extended synthesis
TLDR
While polyploid fish and amphibians share a number of attributes facilitatingpolyploidy, clear drivers of genome duplication do not emerge from the comparison and the lack of a clear association of sexually reproducing polyploids with range expansion, harsh environments, or risk of extinction could suggest that stronger correlations in plants may be driven by shifts in mating system more than ploidy.
Insights into the dynamics of genome size and chromosome evolution in the early diverging angiosperm lineage Nymphaeales (water lilies).
TLDR
A comprehensive overview of genome sizes and chromosome numbers in these early diverging angiosperms is presented by combining additional data from Amborellales and Austrobaileyales.
Genome size is a strong predictor of cell size and stomatal density in angiosperms.
TLDR
The first large-scale comparative analysis is made of the relationship between genome size and cell size across 101 species of angiosperms of varying growth forms, confirming the generality of the genome size/cell size relationship and suggesting that changes in genome size, with concomitant influences on stomatal size and density, may influence physiology.
Genome size in Polystachya (Orchidaceae) and its relationships to epidermal characters.
TLDR
The pantropical orchid genus Polystachya comprises approximately 230 species and shows variation in ploidy, and diploid species had a large range of guard cell lengths that encompassed the size range found in polyploids.
Genome Size Unaffected by Variation in Morphological Traits, Temperature, and Precipitation in Turnip
Genome size (GS) was proposed as proxy for gross phenotypic and environmental changes in plants. GS organismal complexity is an enigma in evolutionary biology. While studies pertaining to
Genome size as a predictor of guard cell length in Arabidopsis thaliana is independent of environmental conditions.
TLDR
The effects of environmental variables on GCL in the model plant Arabidopsis thaliana are investigated to quantify environmentally induced variation and GCL responded to all variables tested, but the changes incurred did not significantly impinge on the predictive capability of the relationship.
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