Results 21 to 30 of about 6,845 (132)

Polyploidy in tissues of plants in vitro of grape somaclones

BIO Web of Conferences, 2021
In vitro experimental plants obtained by clonal micropropagation of 9 grape somaclones of 5 original forms were the material for cytogenetic research. A biological microscope XSP-146TP was used for cytogenetic analysis.
Klimenko Viktor, Lushchay Ekaterina, Zlenko Valeryi   +2 more
doaj   +1 more source

Comparative analysis of the complete chloroplast genome between tetraploidy and diploidy of Cyclocarya paliurus (Batal.) Iljinskaja

Mitochondrial DNA. Part B. Resources, 2021
Cyclocarya paliurus (Batal.) Iljinskaja, a monotypic species in Cyclocarya of Juglandaceae, is regarded as one of important medical plants in China.
Yinquan Qu, Qian Wang, Yanhao Yu, Xiangxiang Fu   +3 more
doaj   +1 more source

Effects of ploidy level and haplotype on variation of photosynthetic traits: Novel evidence from two Fragaria species.

PLoS ONE, 2017
To reveal the effects of ploidy level and haplotype on photosynthetic traits, we chose 175 genotypes of wild strawberries belonging to two haplotypes at two types of ploidy levels (diploidy and tetraploidy) and measured photosynthetic traits. Our results
Song Gao, Qiaodi Yan, Luxi Chen, Yaobin Song, Junmin Li, Chengxin Fu, Ming Dong   +6 more
doaj   +1 more source

Pollen heteromorphism in Schleichera Lour. (Sapindaceae), observed in surface soil samples from central India

Acta Palaeobotanica, 2021
Angiosperms display striking variation of pollen morphological features within and between populations of the same species, as well as within individual plants.
Md. Firoze Quamar, Biswajeet Thakur, Veeru Kant Singh, Santosh Kumar Pandey   +3 more
doaj   +1 more source

Mutagenesis by retroviral insertion in chemical mutagen-generated quasi-haploid mammalian cells

BioTechniques, 2007
Diploidy is a major obstacle to the mutagenic analysis of function in cultured mammalian cells. Here, we show that 6–8 rounds of chemical mutagenesis generates quasi-haploid cells that can be used as targets for insertional mutagenesis using a specially ...
Sung O. Kim, Soon-Duck Ha, Sangun Lee, Sarah Stanton, Bruce Beutler, Jiahuai Han   +5 more
doaj   +1 more source

Applications of Genome Editing Technology in Research on Chromosome Aneuploidy Disorders

Cells, 2020
Chromosomal segregation errors in germ cells and early embryonic development underlie aneuploidies, which are numerical chromosomal abnormalities causing fetal absorption, developmental anomalies, and carcinogenesis.
Silvia Natsuko Akutsu, Kazumasa Fujita, Keita Tomioka, Tatsuo Miyamoto, Shinya Matsuura   +4 more
doaj   +1 more source

Prenatal Genetic Testing for Beckwith‐Wiedemann Syndrome: Considerations, Challenges and Observations (A Real‐World Study)

Prenatal Diagnosis, EarlyView.
ABSTRACT Objective Prenatal genetic testing for imprinting disorders is rarely requested with the exception of Beckwith‐Wiedemann syndrome (BWS) which is associated with specific ultrasound findings (e.g., placental mesenchymal dysplasia, omphalocele). However, genetic testing for BWS is challenging as aberrant DNA methylation has to be addressed which
Melissa Connolly, Louise McClelland, Pierpaola Tannorella, Tanja Richter, Ester Mainini, Andreas Dufke, Annette Lischka, Matthias Begemann, Katja Eggermann, Thomas Eggermann, Silvia Russo   +10 more
wiley   +1 more source

A single mutation results in diploid gamete formation and parthenogenesis in a Drosophila yemanuclein-alpha meiosis I defective mutant

BMC Genetics, 2010
Background Sexual reproduction relies on two key events: formation of cells with a haploid genome (the gametes) and restoration of diploidy after fertilization.
Capri Michèle, Rosset Roland, Delaage Michèle, Meyer Régis E, Aït-Ahmed Ounissa   +4 more
doaj   +1 more source

Mitotic recombination accelerates adaptation in the fungus Aspergillus nidulans. [PDF]

PLoS Genetics, 2007
Understanding the prevalence of sexual reproduction in eukaryotes is a hard problem. At least two aspects still defy a fully satisfactory explanation, the functional significance of genetic recombination and the great variation among taxa in the relative
Sijmen E Schoustra, Alfons J M Debets, Marijke Slakhorst, Rolf F Hoekstra   +3 more
doaj   +1 more source

Purkinje Cardiomyocytes of the Adult Ventricular Conduction System Are Highly Diploid but Not Uniquely Regenerative

Journal of Cardiovascular Development and Disease, 2023
Adult hearts are characterized by inefficient regeneration after injury, thus, the features that support or prevent cardiomyocyte (CM) proliferation are important to clarify.
Hirofumi Watanabe, Ge Tao, Peiheng Gan, Baylee C. Westbury, Kristie D. Cox, Kelsey Tjen, Ruolan Song, Glenn I. Fishman, Takako Makita, Henry M. Sucov   +9 more
doaj   +1 more source