Abstract：
:Small populations of our study species Ranunculus reptans have reduced fitness because of inbreeding, genetic load, and reduced mate availability; that is, they suffer from a three-fold genetic Allee effect. Here, we investigate how the effect of interpopulation outbreeding on offspring fitness depends on population size. We performed within- and between-population crosses with plants originating from 15 populations, and measured offspring performance in a common environment. Interpopulation outbreeding led to an increase in population means of clonal performance, which was defined as the number of rooted offspring rosettes produced per maternal ovule. This fitness gain mainly occurred at the life stage of seed set. It was especially pronounced for populations with a long-term history of small size inferred from their low genetic diversity, estimated from eight allozyme loci. We conclude that in a self-incompatible plant such as R. reptans, interpopulation outbreeding can lead to an immediate genetic rescue effect due to increased cross-compatibility and heterosis, and that this rescue effect is increased as population size decreases.
journal_name
Heredity (Edinb)journal_title
Heredityauthors
Willi Y,Fischer Mdoi
10.1038/sj.hdy.6800732keywords:
subject
Has Abstractpub_date
2005-12-01 00:00:00pages
437-43issue
6eissn
0018-067Xissn
1365-2540pii
6800732journal_volume
95pub_type
杂志文章相关文献
HEREDITY文献大全abstract：:Spatial patterns of genetic variation can reveal otherwise cryptic evolutionary and landscape processes. In northwestern Costa Rica, an approximately concordant genetic discontinuity occurs among populations of several plant species. We conducted phylogeographic analyses of an epiphytic orchid, Brassavola nodosa, to t...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/s41437-019-0218-y
更新日期：2019-11-01 00:00:00
abstract：:Arctic-alpine plants have enormous ranges in the Northern Hemisphere. Phylogeographic studies have provided insights into their glacial survival as well as their postglacial colonization history. However, our understanding of the population dynamics of disjunct alpine populations in temperate regions remains limited. ...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2015.95
更新日期：2016-02-01 00:00:00
abstract：:The fixation of major chromosomal rearrangements with a heterozygote disadvantage is modelled as a simple example of Wright's shifting balance process of evolution in a strongly subdivided population. Chromosomal mutations with an inferior heterozygote become fixed in a local population (or deme) by random genetic dri...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.1985.43
更新日期：1985-06-01 00:00:00
abstract：:Seed dormancy is a key adaptive trait under polygenic control in many plants. We introduced the chromosomal regions containing the dormancy QTLs qSD1, qSD7-1, and qSD12 from an accession of weedy rice into a nondormant genetic background to examine component genetic effects and their interactions with time of afterrip...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/sj.hdy.6800757
更新日期：2006-01-01 00:00:00
abstract：:Quantitative trait locus (QTL) analysis detects regions of a genome that are linked to a complex trait. Once a QTL is detected, the region is narrowed by positional cloning in the hope of determining the underlying candidate gene-methods used include creating congenic strains, comparative genomics and gene expression ...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2010.75
更新日期：2010-11-01 00:00:00
abstract：:Allele frequency differences between sexes and an excess of heterozygotes in males had suggested that the PEPB-1 locus is sex-linked in chinook salmon (Oncorhynchus tshawytscha). We here estimate less than 1% recombination between PEPB-1 and a growth hormone pseudogene known to be in the sex-determining region (SEX) i...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/sj.hdy.6800483
更新日期：2004-07-01 00:00:00
abstract：:Twenty-eight spontaneous alterations modifying the hybridization banding pattern of six families of transposable elements (297, Foldback, copia, jockey, P and hobo) have been fixed in a set of mutation-accumulation lines of Drosophila melanogaster. Their effect on fitness has been studied by competition with the origi...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1046/j.1365-2540.1999.00590.x
更新日期：1999-12-01 00:00:00
abstract：:Heterozygosity-fitness correlations (HFCs) are often used to link individual genetic variation to differences in fitness. However, most studies examining HFCs find weak or no correlations. Here, we derive broad theoretical predictions about how many loci are needed to adequately measure genomic heterozygosity assuming...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2013.99
更新日期：2014-03-01 00:00:00
abstract：:Understanding genetic mechanisms of self-incompatibility (SI) and how they evolve is central to understanding the mating behaviour of most outbreeding angiosperms. Sporophytic SI (SSI) is controlled by a single multi-allelic locus, S, which is expressed in the diploid (sporophyte) plant to determine the SI phenotype o...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2010.29
更新日期：2011-01-01 00:00:00
abstract：:It has been proposed that the distribution patterns and coalescence ages found in Europeans for mitochondrial DNA (mtDNA) haplogroups V, H1 and H3 are the result of a post-glacial expansion from a Franco-Cantabrian refuge that recolonized central and northern areas. In contrast, in this refined mtDNA study of the Cant...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2010.47
更新日期：2011-01-01 00:00:00
abstract：:Cycloheximide-resistant mutants of Schizosaccharomyces pombe were isolated either as spontaneous mutants or after mutagenic treatment with nitrous acid, UV and N-methyl-N'-nitro-N-nitrosoguanidine (MNNG). Twenty-three spontaneous mutants and 64 induced mutants were analysed genetically. Crosses revealed that at least ...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.1976.81
更新日期：1976-10-01 00:00:00
abstract：:Although allelic variants at a locus usually are expressed either dominantly or co-dominantly, there are many cases when a gene is dominantly expressed in some individuals and co-dominantly in others. We present a maximum-likelihood procedure for allele frequency estimation in such situations of "incomplete" co-domina...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.1990.114
更新日期：1990-12-01 00:00:00
abstract：:Recent molecular evidence has shown that many MHC polymorphisms are not only shared between species but are in fact identical at the molecular level. Species that share these polymorphisms may be very distantly related and often diverged millions of generations ago. It is now known that this phenomenon is very unlikel...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.1992.39
更新日期：1992-03-01 00:00:00
abstract：:Knowledge of the degree of temporal stability of population genetic structure and composition is important for understanding microevolutionary processes and addressing issues of human impact of natural populations. We know little about how representative single samples in time are to reflect population genetic constit...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2012.36
更新日期：2012-10-01 00:00:00
abstract：:A technique for the examination of chromosomes in testicular material in Nucella lapillus is described. The diploid chromosome number varies between 26 and 36. Eight pairs of meatcentric chromosomes are always present and range in size from 9mu to 4mu. Additionally, 10 pairs of acrocentric chromosomes (4mu to 1mu) are...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.1975.26
更新日期：1975-04-01 00:00:00
abstract：:A high-resolution transcript linkage map of barley was created using a single doubled haploid (DH) mapping population, only 3'-end expressed sequence tags (ESTs) and only PCR-based assays. Cultivar 'Haruna Nijo' and an ancestral wild-form accession 'H602' were used as EST donors and crossing parents of the mapping pop...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2009.57
更新日期：2009-08-01 00:00:00
abstract：:At treeline, selection by harsh environmental conditions sets an upward limit to arboreal vegetation. Increasing temperatures and the decline of traditional animal raising have favoured an upward shift of treeline in the last decades. These circumstances create a unique opportunity to study the balance of the main for...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2009.42
更新日期：2009-08-01 00:00:00
abstract：:SINE sequences are interspersed throughout virtually all eukaryotic genomes. In the family Salmonidae three families of SINEs have been identified. In this work we have attempted to characterize and locate by means of fluorescent in situ hybridization (FISH) one of these families (HpaI) in the genome of Atlantic salmo...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/sj.hdy.6886210
更新日期：1999-11-01 00:00:00
abstract：:Differences in behaviour between individuals in populations living in different environments may result from evolution proceeding differently in each population. The parasitoid wasp Cotesia glomerata (L.) (Hymenoptera: Braconidae) parasitizes early instar larvae of butterflies in the family Pieridae. In the study area...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1046/j.1365-2540.1999.00549.x
更新日期：1999-08-01 00:00:00
abstract：:The estimation of heritabilities and genetic correlations is based on the assumption that the trait distributions are normal. When the distributions are not normal it is advisable to transform the data to produce normality. However, it is possible that no suitable transformation can be found. The purpose of the presen...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1046/j.1365-2540.2001.00844.x
更新日期：2001-04-01 00:00:00
abstract：:Gene flow was investigated in Anopheles gambiae from eight localities that span the ecological zones of Nigeria (arid savanna zones in the north gradually turn into humid forest zones in the south). Genetic differentiation was measured over 10 microsatellite loci and, to determine any effects of selection, five loci w...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1046/j.1365-2540.2001.00957.x
更新日期：2001-12-01 00:00:00
abstract：:MtDNA restriction fragment polymorphisms were found between cytoplasmic male-sterility types P and R of Plantago lanceolata with the homologous probe pPl311 and maize mtDNA fragments derived from the regions of atp1, cox1 and cox2. No mtDNA differences were observed between male- sterile and restored plants with the s...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/sj.hdy.6880780
更新日期：1997-01-01 00:00:00
abstract：:Theory presented in a previous paper has been used to provide a description of the responses expected from selection in two or more generations of a selfing series. Optimum two-stages and multi-stage selection programmes are described, for a limited set of circumstances, and compared with the single-stage designs desc...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.1990.89
更新日期：1990-10-01 00:00:00
abstract：:Understanding how geographical and environmental features affect genetic variation at both the population and individual levels is crucial in biology, especially in the case of pathogens. However, distinguishing between these factors and the effects of historical range expansion on spatial genetic structure remains ch...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2012.55
更新日期：2013-01-01 00:00:00
abstract：:Gene flow via pollen movement affects genetic variation in plant populations and is an important consideration in plant domestication. Fontainea picrosperma is a subcanopy rainforest tree that is of commercial interest because it is the source of tigilanol tiglate, a natural product used for the treatment of solid tum...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/s41437-019-0231-1
更新日期：2019-10-01 00:00:00
abstract：:Farmed fish are typically genetically different from wild conspecifics. Escapees from fish farms may contribute one-way gene flow from farm to wild gene pools, which can depress population productivity, dilute local adaptations and disrupt coadapted gene complexes. Here, we reanalyse data from two experiments (McGinni...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2015.29
更新日期：2015-08-01 00:00:00
abstract：:Genetic effects of habitat fragmentation may be undetectable because they are generally a recent event in evolutionary time or because of confounding effects such as historical bottlenecks and historical changes in species' distribution. To assess the effects of demographic history on the genetic diversity and populat...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2013.23
更新日期：2013-08-01 00:00:00
abstract：:Restriction endonuclease variation in the 12 kb region surrounding the Adh locus was measured in seven Australian and six Chinese populations of Drosophila melanogaster. There is a higher level of nucleotide-substitution variation in the Australian populations than in the Chinese, which is possibly a reflection of the...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.1992.1
更新日期：1992-01-01 00:00:00
abstract：:Connectivity is widely recognized as an important component in developing effective management and conservation strategies. Although managers are generally most interested in demographic, rather than genetic connectivity, new analytic approaches are able to provide estimates of both demographic and genetic connectivit...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/hdy.2013.58
更新日期：2013-10-01 00:00:00
abstract：:Identifying genetic cues of functional relevance is key to understanding the drivers of evolution and increasingly important for the conservation of biodiversity. This study introduces nuclear ribosomal DNA (nrDNA) to mitochondrial DNA (mtDNA) copy number ratios as a metric with which to screen for this functional gen...
journal_title：Heredity
pub_type： 杂志文章
doi：10.1038/s41437-018-0088-8
更新日期：2018-08-01 00:00:00
