Genetics of gamma-irradiation-induced mutations in Arabidopsis thaliana: Large chromosomal deletions can be rescued through the fertilization of diploid eggs

Article Abstract:

Deletion mutagenesis is used for fine genetic mapping of mutations and DNA markets in several plant species. Gamma-irradiated haploid wild-type pollen was used to pollinate diploid and tetraploid multimarker lines of the model higher plant Arabidopsis. Chromosome loss mutations and large deletions were found to be induced in the irradiated pollen, but were eliminated in diploid M1 plants and could be rescued in triploid M1 progeny.

Research, Usage, Irradiation, Arabidopsis thaliana, Chromosome deletion, Irradiation (Radiation exposure)

---

Heteroplasmy of mitochondrial DNA in the Ophiruroid Astrobrachion constrictum

Article Abstract:

The presence of mitochondrial heteroplasmy is demonstrated in the cytochrome oxidase 1 (CO1) gene of the brittle star Astrobrachion constrictum. Distinct single-strand conformation polymorphism (SSCP) haplotypes differing by two substitutions were found, and there was evidence for heteroplasmy. The haplotypes were isolated and characterized using polymerase chain reaction cloning, SSCP and sequencing.

Genetic aspects, Ophiuroidea, Brittle stars

---

Similar abstracts:

• Abstracts: Identification of a novel nutrient-deprivation-induced Sinorhizobium meliloti gene (hmgA) involved in the degradation of tyrosine
• Abstracts: Missense and nonsense mutations in the lysosomal alpha-mannosidase gene (MANB) in severe and mild forms of alpha-mannosidosis
• Abstracts: Transmission of a fully functional human neocentromere through three generations. Molecular basis for hypertension in the 'type II variant' of apparent mineralocorticoid excess
• Abstracts: Genetic structuring and gene flow in a hybrid zone between two chromosome races of the common shrew (Sorex araneus, Insectivora) revealed by microsatellites. part 2
• Abstracts: Microbial biomass and activity in lead-contaminated soil. Seasonal variations in microbial populations and environmental conditions in an extreme acid mine drainage environment

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.