Abstract:
:In pseudo-arrhenotokous mites, haploid males develop from fertilized eggs that undergo paternal genome loss (PGL) during early embryogenesis. We present evidence that some of the paternal genome may be retained in males of the predatory mite Typhlodromus pyri Scheuten (Acari: Phytoseiidae). Two reproductively compatible populations were differentiated by two random amplified polymorphic DNA markers and the inheritance pattern in the offspring was analysed. Maternal transmission rates are variable and independent of the sex of the offspring and of the marker. These data suggest a nuclear origin and independent segregation of the markers. One marker (330 base pairs (bp)) was paternally transmitted to male as well as female offspring, the other (990 bp) was paternally transmitted to all females and some of the male offspring. We propose that the paternal set of inactivated chromosomes may be partially retained in some tissues of the haploid males or, alternatively, that a B chromosome does not follow the process of PGL in male embryos, thereby segregating with the maternal set. The possible mechanisms controlling the condensation and the segregation of the chromosome(s) retained are discussed on the basis of current hypotheses on chromosome inactivation in insects.
journal_name
Genomejournal_title
Genomeauthors
Perrot-Minnot MJ,Navajas Mdoi
10.1139/g95-110subject
Has Abstractpub_date
1995-10-01 00:00:00pages
838-44issue
5eissn
0831-2796issn
1480-3321pii
g95-110journal_volume
38pub_type
杂志文章相关文献
GENOME文献大全abstract::Genetic parameters were estimated on growth and development traits using analyses of variance and covariance of 42 full-sib families from a select line, 39 full-sib families from a control line of the same strain, and 37 full-sib families from another unselected strain. The traits included percent 1+ smolts, percent s...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g92-046
更新日期:1992-04-01 00:00:00
abstract::Cytogenetic studies in Triticum monococcum (2n = 2x = 14, AA) were initiated by generating a series of primary as well as double and triple trisomics from autotriploids derived from crosses between induced autotetraploids and a diploid progenitor. Analysis of meiotic chromosome behaviour revealed that, with the except...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g93-077
更新日期:1993-06-01 00:00:00
abstract::Elymus L. is the largest and most complex genus in the Triticeae tribe of grasses with approximately 150 polyploid perennial species occurring worldwide. We report here the first genetic linkage map for Elymus. Backcross mapping populations were created by crossing caespitose Elymus wawawaiensis (EW) (Snake River whea...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g11-045
更新日期:2011-10-01 00:00:00
abstract::The evolution of Drosophila subobscura mitochondrial DNA has been studied in experimental populations, founded with flies from a natural population from Calvià (Majorca, Balearic Islands, Spain). This population, like others founded in Europe, is characterized by the presence of 2 very common (>95%) mitochondrial hapl...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g05-077
更新日期:2005-12-01 00:00:00
abstract::Genetic mechanisms of the incompatibility between Erysiphe graminis f.sp. secalis and wheat cultivars were analyzed using F1 hybrids between E. graminis f.sp. secalis, Sk-1, and f.sp. tritici, Tk-1. The avirulence of Sk-1 on Triticum aestivum 'Norin 4', 'Chinese Spring', and 'Kokeshi-komugi' was controlled by a single...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g94-108
更新日期:1994-10-01 00:00:00
abstract::Orobanche crenata Forsk. is a root parasite that produces devastating effects on many crop legumes and has become a limiting factor for faba bean production in the Mediterranean region. The efficacy of available control methods is minimal and breeding for broomrape resistance remains the most promising method of contr...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g02-082
更新日期:2002-12-01 00:00:00
abstract::The genus Alstroemeria contains species with large genomes (2C = 36.5-78.9 pg (17,600-38,000 Mb) in those species with 2n = 2x = 16). We investigated the diversity and genomic and chromosomal organisation of Ty1-copia-like retrotransposons in four Alstroemeria species. Analysis of 33 PCR-amplified sequences correspond...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g98-048
更新日期:1998-06-01 00:00:00
abstract::Trigeneric hybrids offer opportunities to transfer alien traits into cultivated wheat. In this study, a new trigeneric hybrid involving species of Triticum, Psathyrostachys, and Thinopyrum was synthesized by crossing Triticum aestivum L. (wheat)--Thinopyrum intermedium (Host) Barkworth & D.R. Dewey amphiploid Zhong 3 ...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g2012-025
更新日期:2012-05-01 00:00:00
abstract::The genomic content of the subtelomeric repeated sequences Spelt1 and Spelt52 was studied by dot, Southern, and in situ hybridization in 11 newly synthesized amphiploids of Aegilops and Triticum, and data were compared with the parental plants. Spelt1 had reduced copy numbers in the first generation of three synthetic...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g04-044
更新日期:2004-10-01 00:00:00
abstract::Genetic diversity at 35 allozyme loci was surveyed in seven populations of Lacerta armeniaca. Fixed heterozygotes were present at 16 loci, with homozygotes at 17 loci. Variation occurred at two loci, one in each of two populations, indicating one widespread clone, one restricted clone, and one apparently restricted cl...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g95-141
更新日期:1995-12-01 00:00:00
abstract::A novel population consisted of a set of 99 near isogenic lines (NILs) and backcross recombinant inbred lines (BCRILs) derived from a cross between the cultivated tomato Lycopersicon esculentum cv. E6206 and L. hirsutum accession LA1777 is presented. Most of the lines contain a single defined introgression from L. hir...
journal_title:Genome
pub_type: 杂志文章
doi:
更新日期:2000-10-01 00:00:00
abstract::Using contiguous genomic DNA sequences of Arabidopsis thaliana, we were able to identify a region of conserved structure in the genome of rice. The conserved, and presumptive homoeologous segments, are 194 kb and 219-300 kb in size in Arabidopsis and rice, respectively. They contain five homologous genes, distinguishe...
journal_title:Genome
pub_type: 杂志文章
doi:
更新日期:1999-10-01 00:00:00
abstract::MicroRNAs (miRNAs) repress target genes at the post-transcriptional level and play important roles in development and cell lineage decisions. In vertebrates, however, both the targets of miRNAs and their expression profiles during development are poorly understood. Thus far, 326 human miRNAs, 249 mouse miRNAs, and 195...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g06-120
更新日期:2006-10-01 00:00:00
abstract::A novel storage protein gene with obvious [corrected] chimeric structure was isolated from an immature kernel-specific cDNA library prepared from the old Hungarian wheat [corrected] variety, Bánkúti 1201. This clone contains gamma-gliadin sequences in the 5' region and LMW-glutenin sequences on the 3' end. A frameshif...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g05-042
更新日期:2005-10-01 00:00:00
abstract::The first doubled haploid oat linkage map constructed at MTT Agrifood Research Finland was supplemented with additional microsatellites and Diversity Array Technology (DArT) markers to produce a map containing 1058 DNA markers and 34 linkage groups. The map was used to locate quantitative trait loci (QTLs) for 11 impo...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g2012-017
更新日期:2012-04-01 00:00:00
abstract::The early life-history stages of fishes are poorly known, impeding acquisition of the identifications needed to monitor larval recruitment and year-class strength. A comprehensive database of COI sequences, linked to authoritatively identified voucher specimens, promises to change this situation, representing a signif...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/gen-2015-0212
更新日期:2016-11-01 00:00:00
abstract::Conceptual aspects of estimation of genetic components of variance and covariance under selection are discussed, with special attention to likelihood methods. Certain selection processes are described and alternative likelihoods that can be used for analysis are specified. There is a mathematical relationship between ...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g89-136
更新日期:1989-01-01 00:00:00
abstract::The aplocheiloid killifish Rivulus marmoratus is the only known self-fertilizing hermaphroditic vertebrate. Most natural populations consist almost entirely of hermaphrodites and comprise arrays of homozygous clones. However, in almost all populations thus far studied, clonal variation, as detected with molecular tech...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g97-121
更新日期:1997-12-01 00:00:00
abstract::Using pseudomolecules of assembled genomic sequence, we computed the frequencies of 6 to 24 bp oligonucleotide (oligo) "words" across the genome of rice (Oryza sativa L. subsp. japonica). All oligos of 10 or fewer basepairs were repeated at least 12 times in the genome. The percentage of unique (non-repeated) oligos r...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g06-055
更新日期:2006-08-01 00:00:00
abstract::An interspecific Gossypium hirsutum x Gossypium barbadense backcross population of 75 BC1 plants was evaluated for 1014 markers. The map consists of 888 loci, including 465 AFLPs, 229 SSRs, 192 RFLPs, and 2 morphological markers, ordered in 37 linkage groups that represent most if not all of the 26 chromosomes, altoge...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g03-050
更新日期:2003-08-01 00:00:00
abstract::A DNA sequence, pOs6.20, was cloned from the nuclear genome of cultivated rice (Oryza sativa L.) by hybridization with a human minisatellite sequence. At high hybridization stringency, a subfragment of the rice sequence, pOs6.20.3, detected low-copy restriction fragment length polymorphisms (RFLPs), which behaved as M...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g93-061
更新日期:1993-06-01 00:00:00
abstract::Spermatocytes at meiotic metaphase I and anaphase I have a characteristic centromeric filament in a variety of vertebrate organisms. This centromeric filament was first demonstrated on mouse spermatocytes and its presence is now extended to spermatocytes from the human, rat, golden hamster, bull, and chicken. The visu...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g91-136
更新日期:1991-12-01 00:00:00
abstract::The RFLP locus Xglk605 identified by the probe Tag605 maps to a proximal position on the long arm of wheat chromosome 2B about 7 cM away from a gene conditioning resistance to cereal cyst nematode in the wheat line AUS10894. The clone Tag605 was partially sequenced and the PCR primer set AWP1 was designed. The 292-bp ...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g96-100
更新日期:1996-08-01 00:00:00
abstract::GATA-GACA repetitive sequences first isolated from a female snake (termed BKm sequences) and associated with sex chromosomes in some species were hybridized to DNA from rainbow trout (Salmo gairdneri). Genomic DNA was studied from three groups of rainbow trout: (i) randomly selected males and females from an outbred g...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g89-523
更新日期:1989-10-01 00:00:00
abstract::Expensive and unsustainable fishmeal is increasingly being replaced with cheaper lipids and carbohydrates as sources of energy in aquaculture. Although it is known that the excess of lipids and carbohydrates has negative effects on nutrient utilization, growth, metabolic homeostasis, and health of fish, our current un...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/gen-2018-0159
更新日期:2019-02-01 00:00:00
abstract::Lobster mushroom is a wild edible mushroom with potential commercial value. It is the product resulting of the infection, most commonly of Russula brevipes, by Hypomyces lactifluorum. This study undertook quantitative polymerase chain reaction analysis of tissues sampled at different infection stages to investigate R....
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/gen-2017-0168
更新日期:2018-05-01 00:00:00
abstract::Light-harvesting-like (LIL) proteins are low-molecular-mass membrane proteins related to the light-harvesting complexes, which form the dominant antenna system in most photosynthetic eukaryotes. To analyze the LIL protein family, we mined a number of publicly available databases to identify members of this family in a...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g09-081
更新日期:2010-01-01 00:00:00
abstract::Distribution, organization, and molecular analysis of four unrelated satellite DNA components in Aveneae species are described. Highly repeated DNA elements were cloned from Helictotrichon convolutum (CON1 and CON2) and Helictotrichon compressum (COM1 and COM2). The lengths of the repeat monomers are 365 bp (CON1), 56...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g96-131
更新日期:1996-12-01 00:00:00
abstract::Gene segregation at six protein loci was analysed in progeny from tetraploid males and females obtained by suppression of first mitosis. The triploid full-sib families from five tetraploid males and the diploid gynogenetic lines from four tetraploid females were examined. The proportions of heterozygous gametes (0.83 ...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g88-092
更新日期:1988-08-01 00:00:00
abstract::The NADH-specific and NAD(P)H-bispecific nitrate reductase genes from barley have been cloned and sequenced. To determine if the Nar7 locus encodes the NAD(P)H-bispecific nitrate reductase structural gene, a cross was made between a wild-type cultivar, Morex (Nar7 Nar7), and Az70 (nar7w nar7w), a mutant from the culti...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g95-093
更新日期:1995-08-01 00:00:00