Polyploidy and hybridization are thought to have significant impacts on both the evolution and diversification of the genus Actinidia, but the structure and patterns of morphology and molecular diversity relating to ploidy variation of wild Actinidia plants remain much less understood. Here, we examine the distribution of morphological variation and ploidy levels along geographic and environmen...

Genomes vary dramatically in size and in content. This variation is driven in part by numerous polyploidization events that have happened over the course of eukaryotic evolution. Experimental evolution studies, primarily using the yeast Saccharomyces cerevisiae, provide insights into the immediate fitness effects of ploidy mutations, the ability of organisms of different ploidy levels to mask d...

Ploidy-level variation is common and can drastically affect organismal fitness. We focus on the potential consequences of this variation for parasite resistance. First, we elucidate connections between ploidy variation and key factors determining resistance, including allelic diversity, gene expression and physiological condition. We then argue that systems featuring both natural and artificial...

The aim of this research was to improve our understanding of how ploidy level influences phenotype and gene expression in Chinese cabbage (Brassica rapa L. ssp. pekinensis). Haploid plants (2n = 10) was induced by 0.2% colchicine to produce diploid (2n = 20) and tetraploid plants (2n = 40). The aneuploid (2n = 24) was also obtained by hybridization between diploid plants as the female and tetra...

Isomorphic biphasic algal life cycles often occur in the environment at ploidy abundance ratios (Haploid:Diploid) different from 1. Its spatial variability occurs within populations related to intertidal height and hydrodynamic stress, possibly reflecting the niche partitioning driven by their diverging adaptation to the environment argued necessary for their prevalence (evolutionary stability)...

During the past 10 years, there has been considerable interest in the application of new technologies to identify human malignancy and predict disease outcome. Markers of cell proliferation and the techniques of flow cytometry and image analysis for the determination of DNA total content in human tumor cells have been at the forefront of these new developments. This review will focus on the cli...

Ploidy and growth fraction were analyzed by means of a computer-assisted image processor in surgically resected non-small cell lung cancer (NSCLC). This study was done in order (a) to evaluate the distribution of anti-Ki-67 immunostaining and (b) to correlate this distribution to ploidy status and pTNM stage of NSCLC. Thirty-two patients underwent a surgical resection for primary NSCLC followin...

Biological and pharmacological translational research has literally 'exploded' in the last two decades. Main aims in the biological field have been the identification of new prognostic markers to use as an alternative to or to integrate traditional pathologic staging and, more recently, predictors of response to systemic treatments. After a first generation of traditional morpho-pathologic fact...

When breeding diploid potatoes, tetraploid progeny can result from the union of 2n eggs and pollen in 2x-2x crosses. Thirty-three crosses were made to examine frequency All between S. tuberosum dihaploids self-compatible donors, M6 DRH S6-10-4P17. Using chloroplast counting for ploidy determination, was as high 45% one 33 Based upon single nucleotide polymorphism (SNP) genotyping, attributed bi...