A5067602193- Chromosomal and Genetic Variations
- Genetic diversity and population structure
- Plant Virus Research Studies
- Genomics and Phylogenetic Studies
- Evolution and Genetic Dynamics
- Insect-Plant Interactions and Control
- Insect Resistance and Genetics
- Animal Behavior and Reproduction
- Plant and animal studies
- Environmental DNA in Biodiversity Studies
- Plant Disease Resistance and Genetics
- Insect and Arachnid Ecology and Behavior
- Orthoptera Research and Taxonomy
- Genomics and Chromatin Dynamics
- Chemical Synthesis and Characterization
- Genetic and Environmental Crop Studies
- Parasite Biology and Host Interactions
- Epigenetics and DNA Methylation
- Phytoplasmas and Hemiptera pathogens
- Mathematical and Theoretical Epidemiology and Ecology Models
- Legume Nitrogen Fixing Symbiosis
- Microtubule and mitosis dynamics
- Hemiptera Insect Studies
- Trypanosoma species research and implications
- Plant Pathogens and Resistance
Universidad de Granada
2014-2023
Universidad de Jaén
2007-2008
University of East Anglia
1995
Satellite DNA (satDNA) is a major component yet the great unknown of eukaryote genomes and clearly underrepresented in genome sequencing projects. Here we show high-throughput analysis satellite content migratory locust by means bioinformatic Illumina reads with RepeatExplorer RepeatMasker programs. This unveiled 62 satDNA families propose term "satellitome" for whole collection different genome. The finding that satDNAs were present many contigs draft indicates they genomic locations...
The full catalog of satellite DNA (satDNA) within a same genome constitutes the satellitome. Library Hypothesis predicts that satDNA in relative species reflects their common ancestor, but evolutionary mechanisms and pathways evolution have never been analyzed for satellitomes. We compare here satellitomes two Oedipodine grasshoppers (Locusta migratoria Oedaleus decorus) which shared most recent ancestor about 22.8 Ma ago.We found one third families (near 60 every species) showed sequence...
Abstract For many years, parasitic B chromosomes have been considered genetically inert elements. Here we show the presence of ten protein-coding genes in chromosome grasshopper Eyprepocnemis plorans . Four these ( CIP2A, GTPB6, KIF20A , and MTG1 ) were complete whereas six remaining CKAP2, CAP-G, HYI, MYCB2, SLIT TOP2A truncated. Five MYCB2 significantly up-regulated B-carrying individuals, as expected if they actively transcribed from chromosome. This conclusion is supported by three...
Effects of the B chromosome polymorphism grasshopper Eyprepocnemis plorans were analyzed in two natural populations. Postmating sexual selection, female fertility, and survival studied. The lacks drive has no detectable effects on fitness. A neutral cannot invade a population establish polymorphism, but confidence limits our estimates exclude possibility that is maintained by balance between weak selection against individuals with three B's. However, other lines evidence favor following...
Satellite DNA (satDNA) is an abundant class of tandemly repeated noncoding sequences, showing high rate change in sequence, abundance, and physical location. However, the mechanisms promoting these changes are still controversial. The library model was put forward to explain conservation some satDNAs for long periods, predicting that related species share a common collection satDNAs, which mostly experience quantitative changes. Here, we tested by analyzing three ten Schistocerca...
The transmission rates of the three main types B chromosome present in grasshopper Eyprepocnemis plorans were studied by two different methods: (i) cytological observation their meiotic behavior males and females (ii) karyological analysis embryo offspring obtained either from gravid collected field or controlled crosses. We conclude that Bs are inherited a random manner with no tendency toward accumulation loss sex. possible factors might be responsible for maintenance this widespread...
Parasites and hosts are involved in a continuous coevolutionary process leading to genetic changes both counterparts. To understand this process, it is necessary track host responses, one of which could be an increase sex recombination, such as proposed by the Red Queen hypothesis. In theoretical framework, inducible recombination hypothesis states that B-chromosomes (genome parasites prosper natural populations many living beings) elicit chiasma frequency favoured selection because...
The grasshopper Eyprepocnemis plorans subsp. harbors a very widespread polymorphism for supernumerary (B) chromosomes which appear to have arisen recently. These behave as genomic parasites because they are harmful the individuals carrying them and show meiotic drive in initial stages of population invasion. rapid increase B chromosome frequency at intrapopulation level is thus granted by drive, but its spread among populations most likely depends on interpopulation gene flow. We analyze...
Recent advances in next generation sequencing (NGS) have greatly increased our understanding of non-coding tandem repeat (TR) DNA. Here we show how TR DNA can be useful for the study hybrid zones (HZ), as it serves a marker to identify introgression areas where two biological entities come contact. We used Illumina libraries analyse subspecies grasshopper Chorthippus parallelus, which currently form HZ Pyrenees. retrieved total 152 sequences, and fluorescent situ hybridization (FISH) map 77...
Seventeen controlled crosses in which the mitotically unstable B chromosome of Locusta migratoria was carried by one parent only have provided evidence that chromosomes are significantly eliminated during sexual transmission males, at a mean rate almost counteracts premeiotic accumulation derived from mitotic instability germ line development. On other hand, accumulated females, presumably their preferential migration to secondary oocyte first meiotic division. These results substantially...