Abstract:
:Most plant species are recent or ancient polyploids (displaying at least one round of genome duplication in their history). Cultivated species (e.g. wheat, cotton, canola, sugarcane, coffee) and invasive species are often relatively recent polyploids, and frequently of hybrid origin (i.e. allopolyploids). Despite the genetic bottleneck occurring during the allopolyploid speciation process, the formation of such species from two divergent lineages leads to fixed heterozygosity decisive to their success. New phenotypes and new niche occupation are usually associated with this mode of speciation, as a result of both genomic rearrangements and gene expression changes of different magnitudes depending on the different polyploid species investigated. These gene expression changes affecting newly formed polyploid species may result from various, interconnected mechanisms, including (i) functional interactions between the homoeologous copies and between their products, that are reunited in the same nucleus and cell; (ii) the fate of duplicated copies, selective pressure on one of the parental copy being released which could lead to gene loss, pseudogenization, or alternatively, to subfunctionalization or neofunctionalization; and (iii) epigenetic landscape changes that in turn affect gene expression. As one of the interrelated processes leading to epigenetic regulation of gene expression, the DNA methylation status of newly formed species appears to be consistently affected following both hybridization and genome doubling. In this issue, Verhoeven et al. have investigated the fate of DNA methylation patterns that could affect naturally occurring new asexual triploid lineages of dandelions. As a result of such a ploidy level change, the authors demonstrate stably transmitted DNA methylation changes leading to unique DNA methylation patterns in each newly formed lineage. Most studies published to date on plant DNA methylation polymorphism were performed using restriction enzymes sensitive to methylation. Recently, new high-throughput methods were made available, thanks to the development of 'next-generation sequencing' techniques. The combination of these methods offers powerful and promising tools to investigate epigenetic variation in both model and non-model systems.
journal_name
Mol Ecoljournal_title
Molecular ecologyauthors
Salmon A,Ainouche MLdoi
10.1111/j.1365-294X.2009.04461.xsubject
Has Abstractpub_date
2010-01-01 00:00:00pages
213-5issue
2eissn
0962-1083issn
1365-294Xpii
MEC4461journal_volume
19pub_type
评论,杂志文章abstract::Modern analytical methods for population genetics and phylogenetics are expected to provide more accurate results when data from multiple genome-wide loci are analysed. We present the results of an initial application of parallel tagged sequencing (PTS) on a next-generation platform to sequence thousands of barcoded P...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12049
更新日期:2013-01-01 00:00:00
abstract::We present a new approach for defining groups of populations that are geographically homogeneous and maximally differentiated from each other. As a by-product, it also leads to the identification of genetic barriers between these groups. The method is based on a simulated annealing procedure that aims to maximize the ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2002.01650.x
更新日期:2002-12-01 00:00:00
abstract::In species that form dense populations, major disturbance events are expected to increase the chance of establishment for immigrant lineages. Real-time tests of the impact of disturbance on patterns of genetic structure are, however, scarce. Central to testing these concepts is determining the pool of potential immigr...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15303
更新日期:2020-01-01 00:00:00
abstract::The Monotropoideae (Ericaceae) are nonphotosynthetic plants that obtain fixed carbon from their fungal mycorrhizal associates. To infer the evolutionary history of this symbiosis we identified both the plant and fungal lineages involved using a molecular phylogenetic approach to screen 331 plants, representing 10 of t...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2001.01358.x
更新日期:2001-09-01 00:00:00
abstract::Relatedness increases the likelihood of cooperation within colonies of social insects. Polygyny, the coexistence of numerous reproductive females (queens) in a colony, is common in mature colonies of the termite Macrotermes michaelseni. In this species, polygyny results from pleometrosis and from several female alates...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2005.02507.x
更新日期:2005-04-01 00:00:00
abstract::Coral reefs belong to the most diverse ecosystems on our planet. The diversity in coloration and lifestyles of coral reef fishes makes them a particularly promising system to study the role of visual communication and adaptation. Here, we investigated the evolution of visual pigment genes (opsins) in damselfish (Pomac...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13968
更新日期:2017-03-01 00:00:00
abstract::Variation of DNA methylation is thought to play an important role for rapid adjustments of plant populations to dynamic environmental conditions, thus compensating for the relatively slow response time of genetic adaptations. However, genetic and epigenetic variation of wild plant populations has not yet been directly...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12835
更新日期:2014-07-01 00:00:00
abstract::Humans are notorious for disturbing terrestrial ecosystems worldwide, especially those that are in close proximity to urban areas. This disturbance has involved the accumulation of various types of chemical pollutants, of either agricultural or industrial origins, in both soil and water ecosystems. Pollutants have som...
journal_title:Molecular ecology
pub_type: 评论,新闻
doi:10.1111/j.1365-294x.2011.05186.x
更新日期:2011-08-01 00:00:00
abstract::Phenotypic divergence among natural populations can be explained by natural selection or by neutral processes such as drift. Many examples in the literature compare putatively neutral (FST ) and quantitative genetic (QST ) differentiation in multiple populations to assess their evolutionary signature and identify cand...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15546
更新日期:2020-08-01 00:00:00
abstract::New technologies promise to revolutionize the field of molecular ecology. This technological progress comes with its own set of challenges. Among the most important ones is the analysis and interpretation of the data in a way that tells us about the molecular causes of the phenotype of interest and its consequences. I...
journal_title:Molecular ecology
pub_type: 评论,杂志文章
doi:10.1111/j.1365-294X.2010.04830.x
更新日期:2010-12-01 00:00:00
abstract::Biological control requires specific tools for the accurate detection and identification of natural enemies, and to detect unusual variations in their density, which may follow changes in agricultural practices. Here we have developed specific molecular markers to detect Lydella thompsoni (Herting) and Pseudoperichaet...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2005.02650.x
更新日期:2005-09-01 00:00:00
abstract::Improving resistance durability involves to be able to predict the adaptation speed of pathogen populations. Identifying the genetic bases of pathogen adaptation to plant resistances is a useful step to better understand and anticipate this phenomenon. Globodera pallida is a major pest of potato crop for which a resis...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14240
更新日期:2017-09-01 00:00:00
abstract::The savannah biome of sub-Saharan Africa harbours the highest diversity of ungulates (hoofed mammals) on Earth. In this review, we compile population genetic data from 19 codistributed ungulate taxa of the savannah biome and find striking concordance in the phylogeographic structuring of species. Data from across taxa...
journal_title:Molecular ecology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-294X.2012.05650.x
更新日期:2012-08-01 00:00:00
abstract::Most emerging pathogens of humans can infect multiple host species (Woolhouse & Gowtage-Sequeria, 2005). This simple fact has motivated multiple large-scale, comparative analyses of the drivers of pathogen sharing and zoonotic pathogen richness among hosts as well as the factors determining the zoonotic potential of p...
journal_title:Molecular ecology
pub_type: 评论,新闻
doi:10.1111/mec.15573
更新日期:2020-09-01 00:00:00
abstract::Nonrandom mating can structure populations and has important implications for population-level processes. Investigating how and why mating deviates from random is important for understanding evolutionary processes as well as informing conservation and management. Prior to the implementation of parentage analyses, unde...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13290
更新日期:2015-08-01 00:00:00
abstract::Gene flow among incipient species can act as a creative or destructive force in the speciation process, generating variation on which natural selection can act while, potentially, undermining population divergence. The flowering plant genus Carex exhibits a rapid and relatively recent radiation with many species limit...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14253
更新日期:2017-10-01 00:00:00
abstract::Quaternary climatic fluctuations have left contrasting historical footprints on the neutral genetic diversity patterns of existing populations of different tree species. We should expect the demography, and consequently the neutral genetic structure, of taxa less tolerant to particular climatic extremes to be more sen...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2010.04571.x
更新日期:2010-04-01 00:00:00
abstract::Widespread species that exhibit both high gene flow and the capacity to occupy heterogeneous environments make excellent models for examining local selection processes along environmental gradients. Here we evaluate the influence of temperature and landscape variables on genetic connectivity and signatures of local ad...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15146
更新日期:2019-07-01 00:00:00
abstract::Interbreeding species often produce low-fitness hybrids due to genetic incompatibilities between parental genomes. Whether these incompatibilities reflect fixed allelic differences between hybridizing species, or, alternatively, standing variants that segregate within them, remains unknown for many natural systems. Ye...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15246
更新日期:2019-10-01 00:00:00
abstract::Chilo suppressalis (Walker) displays significant geographical differences in ecological preference that may be congruent with patterns of molecular variation. To test this, we collected and analysed 381 individuals of this species from cultivated rice at 18 localities in China during the rice-growing season of 2005-20...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2008.03792.x
更新日期:2008-06-01 00:00:00
abstract::Determining the genetic structure of tropical bird populations is important for assessing potential genetic effects of future habitat fragmentation and for testing hypotheses about evolutionary mechanisms promoting diversification. Here we used 10 microsatellite DNA loci to describe levels of genetic differentiation f...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2007.03519.x
更新日期:2007-12-01 00:00:00
abstract::Kinkajou social groups generally consist of one adult female, two males, one subadult and one juvenile. Based on analysis of variation in 11 microsatellite loci, we assess the degree of kinship within and between four social groups totaling 25 kinkajous. We use exclusion and likelihood analyses to assign parents for s...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2000.00921.x
更新日期:2000-06-01 00:00:00
abstract::Within the framework of landscape genetics, resistance surface modelling is particularly relevant to explicitly test competing hypotheses about landscape effects on gene flow. To investigate how fragmentation of tropical forest affects population connectivity in a forest specialist bird species, we optimized resistanc...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14233
更新日期:2017-10-01 00:00:00
abstract::The number of exotic plant species that have been introduced into the United States far exceeds that of other groups of organisms, and many of these have become invasive. As in many regions of the globe, invasive members of the thistle tribe, Cardueae, are highly problematic in the California Floristic Province, an es...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13227
更新日期:2015-06-01 00:00:00
abstract::Unlike plants and vertebrates, the ecological preferences, and potential vulnerabilities of soil invertebrates to environmental change, remain poorly understood in terrestrial ecosystems globally. We conducted a cross-biome survey including 83 locations across six continents to advance our understanding of the ecologi...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15299
更新日期:2020-02-01 00:00:00
abstract::Factors ranging from ecological opportunity to genome composition might explain why only some lineages form adaptive radiations. While being rare, particular systems can provide natural experiments within an identical ecological setting where species numbers and phenotypic divergence in two closely related lineages ar...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15774
更新日期:2020-12-11 00:00:00
abstract::Following the announcement of the first case of rabbit haemorrhagic disease (RHD) in a pet rabbit, housed indoors in Canada for more than 1 year, I submitted an evidence-based explanation to ProMed explaining how RHD might have caused the death of 'one' of the three pet rabbits. I suggested with supporting evidence, t...
journal_title:Molecular ecology
pub_type: 评论,信件
doi:10.1111/j.1365-294X.2012.05462.x
更新日期:2012-03-01 00:00:00
abstract::Elucidating the complex evolutionary armory that mosquitoes deploy against insecticides is crucial to maintain the effectiveness of insecticide-based interventions. Here, we deciphered the role of a 6.5-kb structural variation (SV) in driving cytochrome P450-mediated pyrethroid resistance in the malaria vector, Anophe...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15645
更新日期:2020-11-01 00:00:00
abstract::Carrion beetles (Coleoptera, Silphidae) are well known for their behaviour of exploiting vertebrate carcasses for nutrition. While species in the subfamily Silphinae feed on large carcasses and on larvae of competing scavengers, the Nicrophorinae are unique in monopolizing, burying and defending small carrion, and pro...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12469
更新日期:2014-03-01 00:00:00
abstract::Cichlid fish are well known for their high speciation rates, which are usually accompanied by spectacular and rapid diversification in eco-morphological and secondary sexual traits. This is best illustrated by the famous repeated explosive radiations in the African Great Lakes Tanganyika, Malawi and Victoria, each lak...
journal_title:Molecular ecology
pub_type: 评论,杂志文章
doi:10.1111/mec.13598
更新日期:2016-04-01 00:00:00