Drosophila resistance genes to parasitoids: chromosomal location and linkage analysis.
نویسندگان
چکیده
Insect hosts can survive infection by parasitoids using the encapsulation phenomenon. In Drosophila melanogaster the abilities to encapsulate the wasp species Leptopilina boulardi and Asobara tabida each involve one major gene. Both resistance genes have been precisely localized on the second chromosome, 35 centimorgans apart. This result clearly demonstrates the involvement of at least two separate genetic systems in Drosophila resistance to parasitoid wasps. The resistance genes to L. boulardi and A. tabida are not clustered as opposed to many plant resistance genes to pathogens cloned to date.
منابع مشابه
Comparative Genomic Hybridization (CGH) Reveals a Neo-X Chromosome and Biased Gene Movement in Stalk-Eyed Flies (Genus Teleopsis)
Chromosomal location has a significant effect on the evolutionary dynamics of genes involved in sexual dimorphism, impacting both the pattern of sex-specific gene expression and the rate of duplication and protein evolution for these genes. For nearly all non-model organisms, however, knowledge of chromosomal gene content is minimal and difficult to obtain on a genomic scale. In this study, we ...
متن کاملChromosomal localization of microsatellite loci in Drosophila mediopunctata
Drosophila mediopunctata has been used as a model organism for genetics and evolutionary studies in the last three decades. A linkage map with 48 microsatellite loci recently published for this species showed five syntenic groups, which had their homology determined to Drosophila melanogaster chromosomes. Then, by inference, each of the groups was associated with one of the five major chromosom...
متن کاملEvaluation of the Possibility of Chromosomal and Plasmid-Dependent Antibiotic-Transferable Genes in Acinetobacter Genomic Isolates Isolated from Clinical Specimens and genotype
Background: Acinetobacter baumannii is one of the most important causes of nosocomial infections and has an extraordinary ability to obtain antimicrobial resistance to a wide range of antibiotics. Multidrug-resistant strains and producers of AmpC beta-lactamases of this bacterium cause serious infectious diseases in different parts of the hospital and in hospitalized people, and the treatment o...
متن کاملMolecular Mapping of Disease-Related Expressed Sequence Tags and Resistance Gene Analogues in Soybean By
Soybean has become one of the most important crops to the United States, resulting in a need to improve its disease resistance. The objectives of this study were to 1) design primers and develop PCR-based markers from disease-related expressed sequence tags (ESTs) and resistance gene analogues (RGAs), 2) assess the utility of such markers by diversity analysis of 12 soybean parental lines, and ...
متن کاملEvolution of a Cellular Immune Response in Drosophila: A Phenotypic and Genomic Comparative Analysis
Understanding the genomic basis of evolutionary adaptation requires insight into the molecular basis underlying phenotypic variation. However, even changes in molecular pathways associated with extreme variation, gains and losses of specific phenotypes, remain largely uncharacterized. Here, we investigate the large interspecific differences in the ability to survive infection by parasitoids acr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Proceedings. Biological sciences
دوره 267 1451 شماره
صفحات -
تاریخ انتشار 2000