2,781 results match your criteria intraspecific diversity


Hidden biodiversity revealed by DNA barcoding in black fly genus .

J Vector Borne Dis 2020 Apr-Jun;57(2):128-138

Collaborative Innovation Center for the Origin and Control of emerging Infectious Diseases, Shandong First Medical University, Taian, PR China.

Background & Objectives: The black fly genus Simulium Latreille is one of the most important medical insect group of the family Simuliidae (Diptera) and many species of this genus are important pests of human and animals, while some of them also represent vectors of pathogens. Correct species identification is essential to the implementation of control measures for species of medical or agricultural importance.

Methods: In this study, the usefulness of DNA barcoding was discussed in distinguishing species of Simulium. Read More

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Genetic diversity, distribution and domestication history of the neglected GGAA genepool of wheat.

Theor Appl Genet 2021 Jul 20. Epub 2021 Jul 20.

Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben, Germany.

Key Message: We present a comprehensive survey of cytogenetic and genomic diversity of the GGAA genepool of wheat, thereby unlocking these plant genetic resources for wheat improvement. Wheat yields are stagnating around the world and new sources of genes for resistance or tolerances to abiotic traits are required. In this context, the tetraploid wheat wild relatives are among the key candidates for wheat improvement. Read More

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Blow flies, synanthropy and sex ratio: Are the deviations in the sex proportion linked to human transformation of landscapes?

Acta Trop 2021 Jul 14;222:106052. Epub 2021 Jul 14.

Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" (MACN), Angel Gallardo Street 470, Buenos Aires, Argentina. Electronic address:

In most species, several factors like time of emergence, age at maturation, reproductive life span, survival of males and females, mating behavior, differential resource use, and migration patterns may affect the adult sex ratio. Anthropogenic landscape transformation is known to change diversity, favoring colonization by exotic species but other populational parameters, such as the sex ratio, have not been assessed. The aim of the present study was to describe the sex-ratio patterns of adult necrophagous blow flies captured using carrion-baited traps along habitats representing different levels of human impact. Read More

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Induced plasticity alters responses to conspecific interactions in seedlings of a perennial grass.

Authors:
Alicia J Foxx

Sci Rep 2021 Jul 16;11(1):14581. Epub 2021 Jul 16.

Genomics and Bioinformatics Research Unit, United States Department of Agriculture, Agricultural Research Service, 1600 SW 23rd Drive, Gainesville, FL, 32608, USA.

Plants can interact with different individuals in their lifetime which may lead to plastic response that affect performance. If conspecific interactions are altered through previous plastic responses that could affect stabilizing niche mechanisms, in which conspecifics compete more intensely to promote diversity and coexistence. Here, I show interactions between Pascopyrum smithii and conspecifics resulted in largely canalized traits, whereas P. Read More

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Revisiting the Neurospora crassa mitochondrial genome.

Lett Appl Microbiol 2021 Jul 15. Epub 2021 Jul 15.

IDENTIFICA genetic testing, Rua Simão Bolívar 259 3º Dir Tras, 4470-214, Maia, Portugal.

The mitochondrial genome of Neurospora crassa has been less studied than its nuclear counterpart, yet it holds great potential for understanding the diversity and evolution of this important fungus. Here we describe a new mitochondrial DNA (mtDNA) complete sequence of a N. crassa wild type strain. Read More

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Complete mitochondrial genome of the Salt Creek pupfish, : characterization and identification of single nucleotide polymorphisms (SNPs).

Mitochondrial DNA B Resour 2021 5;6(8):2229-2232. Epub 2021 Jul 5.

Biological Sciences Department, California Polytechnic State University, San Luis Obispo, CA, USA.

The Salt Creek pupfish, Miller, 1943 is endemic to Death Valley, California, USA, and resides as a single population within one of the most extreme inland aquatic environments capable of supporting fish. Here we report the sequencing of complete 16,499 base pair (bp) mitochondrion genomes from four individuals. The mitochondrial genome of comprises 13 protein-coding regions, 12S and 16S rRNAs, 22 tRNAs, and an 832 bp D-loop region. Read More

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The complete chloroplast genome sequence of China (Lauraceae) and intra-species diversity.

Mitochondrial DNA B Resour 2021 1;6(8):2162-2163. Epub 2021 Jul 1.

Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization, Huanggang Normal University, Huanggang, China.

is a signature composition in the broadleaved deciduous forest of East China and Japan. Presently, the complete chloroplast (cp) genome of this species was sequenced, assembled, and annotated. It is 152,818 bp in length and encodes 85 protein-coding genes, 36 transfer RNA (tRNA) genes and eight ribosomal RNA (rRNA) genes. Read More

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More than Maize, Bananas, and Coffee: The Inter- and Intraspecific Diversity of Edible Plants of the Huastec Mayan Landscape Mosaics in Mexico.

Econ Bot 2021 Jul 9:1-17. Epub 2021 Jul 9.

Faculty of Social Sciences and Humanities, Autonomous University of San Luis Potosí, San Luis Potosí, Mexico.

Global emergencies such as biodiversity loss and climate crisis urge us to identify and mainstream crop genetic resources in complex indigenous farming systems to understand their role as genetic reservoirs and identify synergies in productive landscapes between development, conservation, and food security. We aimed to characterize the inter- and intraspecific diversity of food plants of the (or Huastec) in Mexico and their distribution within and between the different land-use systems along a tropical altitudinal gradient. farmers manage a highly diverse and dynamic food biota in swidden maize fields, agroforestry systems, and home gardens. Read More

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Changes in Intraspecific Diversity of the Arbuscular Mycorrhizal Community Involved in Plant-Plant Interactions Between Sporobolus robustus Kunth and Prosopis juliflora (Swartz) DC Along an Environmental Gradient.

Microb Ecol 2021 Jul 10. Epub 2021 Jul 10.

Laboratoire de Biologie Et Physiologie Végétales, Université Des Antilles, Guadeloupe, France.

The intensification of biological processes coping with salt stress became a major issue to mitigate land degradation. The Sine-Saloum Delta in Senegal is characterized by salt-affected soils with vegetation dominated by salt-tolerant grass Sporobolus robustus and shrubs like Prosopis juliflora. Plant experiments in controlled conditions suggested that arbuscular mycorrhizal (AM) fungi might be the key actors of facilitation process observed between S. Read More

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Morphological and genetic diversity of traditional varieties of agave in Hidalgo State, Mexico.

PLoS One 2021 9;16(7):e0254376. Epub 2021 Jul 9.

Laboratorio de Genética, Área Académica de Biología, Instituto de Ciencias Básicas e Ingeniería, Universidad Autónoma del Estado de Hidalgo, Mineral de la Reforma, Hidalgo, México.

The agaves are plants of cultural importance which have been used by humans for about 10,000 years and about 40 specific uses. The most culturally and economically important of those uses are for the production of fermented (pulque) and distilled beverages (mescal). Pulque continues to be produced in nearly all of Mexico, and the agaves used for this purpose have shown domestication syndrome. Read More

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Substrate-borne vibration and sound production by the land hermit crab Coenobita compressus during social interactions.

Authors:
Louise Roberts

J Acoust Soc Am 2021 May;149(5):3261

Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755, USA.

Despite the diversity of sound production in crustacea, sounds produced by the land hermit crabs (Coenobitidae) are not well understood. Here, sound and substrate-borne vibration production by the tropical species Coenobita compressus was characterized in relation to shell architecture and social context. Sound production rates were compared between group and solitary conditions. Read More

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Malagasy Polka Dot Moths (Noctuoidea: Erebidae: Arctiinae: Syntomini) of Ambohitantely-endemism in the most important relict of Central Plateau rainforest in Madagascar.

PeerJ 2021 24;9:e11688. Epub 2021 Jun 24.

Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Kraków, Poland.

Malagasy Syntomini (Polka Dot Moths) are one of the largest endemic lineages of Lepidoptera on the island, belonging to the Tiger Moth subfamily (Arctiinae). This diverse radiation comprises nearly 100 valid described species that share a single ancestor. Despite a monograph in 1964 by Paul Griveaud, systematics of the group greatly needs modern revision, and their distribution on the island is still poorly known. Read More

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Artificial nighttime lighting impacts visual ecology links between flowers, pollinators and predators.

Nat Commun 2021 07 6;12(1):4163. Epub 2021 Jul 6.

Centre for Ecology & Conservation, University of Exeter, Penryn, UK.

The nighttime environment is being altered rapidly over large areas worldwide through introduction of artificial lighting, from streetlights and other sources. This is predicted to impact the visual ecology of many organisms, affecting both their intra- and interspecific interactions. Here, we show the effects of different artificial light sources on multiple aspects of hawkmoth visual ecology, including their perception of floral signals for pollination, the potential for intraspecific sexual signalling, and the effectiveness of their visual defences against avian predators. Read More

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Genome-wide analysis of genomic imprinting in the endosperm and allelic variation in flax.

Plant J 2021 Jul 6. Epub 2021 Jul 6.

Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang, China.

Genomic imprinting is an epigenetic phenomenon that causes biased expression of maternally and paternally inherited alleles. In flowering plants, genomic imprinting predominantly occurs in the triploid endosperm and plays a vital role in seed development. In this study, we identified 248 candidate imprinted genes including 114 maternally expressed imprinted genes (MEGs) and 134 paternally expressed imprinted genes (PEGs) in flax (Linum usitatissimum L. Read More

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Intraspecific diversity and genetic structure in the widespread macroalga Agarophyton vermiculophyllum.

J Phycol 2021 Jul 4. Epub 2021 Jul 4.

Department of Biology and Grice Marine Lab, College of Charleston, 205 Fort Johnson Road, Charleston, South Carolina, 29412, USA.

Single-gene markers, such as the mitochondrial cox1, microsatellites, and single-nucleotide polymorphisms are powerful methods to describe diversity within and among taxonomic groups and characterize phylogeographic patterns. Large repositories of publicly-available, molecular data can be combined to generate and evaluate evolutionary hypotheses for many species, including algae. In the case of biological invasions, the combination of different molecular markers has enabled the description of the geographic distribution of invasive lineages. Read More

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A study of the composition of the Obsoletus complex and genetic diversity of Culicoides obsoletus populations in Spain.

Parasit Vectors 2021 Jul 3;14(1):351. Epub 2021 Jul 3.

Animal Health Department, Faculty of Veterinary Medicine, VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain.

Background: The Culicoides obsoletus species complex (henceforth 'Obsoletus complex') is implicated in the transmission of several arboviruses that can cause severe disease in livestock, such as bluetongue, African horse sickness, epizootic hemorrhagic disease and Schmallenberg disease. Thus, this study aimed to increase our knowledge of the composition and genetic diversity of the Obsoletus complex by partial sequencing of the cytochrome c oxidase I (cox1) gene in poorly studied areas of Spain.

Methods: A study of C. Read More

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Distribution and Diversity of in Boreal Forests of Northern European Russia.

Microorganisms 2021 Jun 29;9(7). Epub 2021 Jun 29.

Laboratory of Mycology and Phytopathology, Laboratory of Microbiological Plant Protection, All-Russian Institute of Plant Protection (FSBSI VIZR), Pushkin, 196608 St. Petersburg, Russia.

The distribution and genetic diversity of 91 of isolates collected during a long-term survey in boreal forests of northern European Russia was studied. Based on morphological and sequence analysis of TEF and Bloc loci, three spp. were identified: , and , with abundance of 81, 11, and 8%, respectively. Read More

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Diversity and Relationships among Neglected Apricot ( L.) Landraces Using Morphological Traits and SSR Markers: Implications for Agro-Biodiversity Conservation.

Plants (Basel) 2021 Jun 30;10(7). Epub 2021 Jun 30.

Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, NA, Italy.

Apricot ( L.) is an economically important tree species globally cultivated in temperate areas. Italy has an ample number of traditional varieties, but numerous landraces are abandoned and at risk of extinction because of increasing urbanization, agricultural intensification, and varietal renewal. Read More

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Phylogeographic Investigation of an Endangered Longhorn Beetle, (Coleoptera: Cerambycidae), in Northeast Asia: Implications for Future Restoration in Korea.

Insects 2021 Jun 15;12(6). Epub 2021 Jun 15.

Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Korea.

The longhorn beetle, () Semenov, is the only remnant species found in the Palearctic region, while all other species are distributed mainly in Central America and partly in South America. This species has been placed in the first category (as 'critically endangered') of the Red Data Book in Russia and designated as one of the top-priority target species among all endangered invertebrate species for restoration in South Korea since 2006. Although its restricted distribution in Northeast Asia with a high conservational value has been highlighted, genetic features of from different geographic regions remain unexplored. Read More

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Genome-Wide SNP Markers for Genotypic and Phenotypic Differentiation of Melon ( L.) Varieties Using Genotyping-by-Sequencing.

Int J Mol Sci 2021 Jun 23;22(13). Epub 2021 Jun 23.

National Agrobiodiversity Center, National Institute of Agricultural Sciences (NAS), Rural Development Administration (RDA), Jeonju 54874, Korea.

Melon ( L.) is an economically important horticultural crop with abundant morphological and genetic variability. Complex genetic variations exist even among melon varieties and remain unclear to date. Read More

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Body size and tree species composition determine variation in prey consumption in a forest-inhabiting generalist predator.

Ecol Evol 2021 Jun 20;11(12):8295-8309. Epub 2021 May 20.

Terrestrial Ecology Unit Department of Biology Ghent University Gent Belgium.

Trophic interactions may strongly depend on body size and environmental variation, but this prediction has been seldom tested in nature. Many spiders are generalist predators that use webs to intercept flying prey. The size and mesh of orb webs increases with spider size, allowing a more efficient predation on larger prey. Read More

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Genetic diversity of Colletotrichum lupini and its virulence on white and Andean lupin.

Sci Rep 2021 Jun 29;11(1):13547. Epub 2021 Jun 29.

Department of Crop Sciences, Research Institute of Organic Agriculture (FiBL), Frick, Switzerland.

Lupin cultivation worldwide is threatened by anthracnose, a destructive disease caused by the seed- and air-borne fungal pathogen Colletotrichum lupini. In this study we explored the intraspecific diversity of 39 C. lupini isolates collected from different lupin cultivating regions around the world, and representative isolates were screened for their pathogenicity and virulence on white and Andean lupin. Read More

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How well do genetic markers inform about responses to intraspecific admixture? A comparative analysis of microsatellites and RADseq.

BMC Genom Data 2021 Jun 28;22(1):22. Epub 2021 Jun 28.

Centre for Ecology and Evolution in Microbial Model Systems, EEMiS, Department of Biology and Environmental Science, Linnaeus University, SE-392 31, Kalmar, Sweden.

Background: Fitness consequences of intraspecific genetic admixture can vary from positive to negative depending on the genetic composition of the populations and environmental conditions. Because admixture has potential to influence the success of management and conservation efforts, genetic similarity has been suggested to be used as a proxy to predict the outcome. Studies utilizing microsatellites (a neutral marker) to investigate associations between genetic distance and admixture effects show conflicting results. Read More

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Evolutionary and ecological processes influencing chemical defense variation in an aposematic and mimetic butterfly.

PeerJ 2021 18;9:e11523. Epub 2021 Jun 18.

Research Centre for Ecological Change, Organismal and Evolutionary Biology Research Programme, University of Helsinki, Helsinki, Finland.

Chemical defences against predators underlie the evolution of aposematic coloration and mimicry, which are classic examples of adaptive evolution. Surprisingly little is known about the roles of ecological and evolutionary processes maintaining defence variation, and how they may feedback to shape the evolutionary dynamics of species. Cyanogenic butterflies exhibit diverse warning color patterns and mimicry, thus providing a useful framework for investigating these questions. Read More

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Genomic consequences of human-mediated translocations in margin populations of an endangered amphibian.

Evol Appl 2021 Jun 25;14(6):1623-1634. Epub 2021 Mar 25.

Unit of Evolutionary Biology/Systematic Zoology Institute for Biochemistry and Biology University of Potsdam Potsdam Germany.

Due to their isolated and often fragmented nature, range margin populations are especially vulnerable to rapid environmental change. To maintain genetic diversity and adaptive potential, gene flow from disjunct populations might therefore be crucial to their survival. Translocations are often proposed as a mitigation strategy to increase genetic diversity in threatened populations. Read More

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New insights into the intraspecific cytoplasmic DNA diversity, maternal lineages classification and conservation issues of Tunisian pearl millet landraces.

Plant Biotechnol (Tokyo) 2021 Mar;38(1):17-22

Laboratory of Plant Molecular Physiology, Centre of Biotechnology of Borj-Cedria, BP 901, 2050 Hammam-Lif, Tunisia.

Tunisian pearl millet ( L.) landraces are still growing in contrasting agro-ecological environments and are considered potentially useful for national and international breeders. Despite its genetic potential, the cropping areas of this species are still limited and scattered which increases the risk of genetic erosion. Read More

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Strain diversity of plant-associated Lactiplantibacillus plantarum.

Microb Biotechnol 2021 Jun 25. Epub 2021 Jun 25.

Department of Food Science and Technology, University of California, Davis, Davis, CA, USA.

Lactiplantibacillus plantarum (formerly Lactobacillus plantarum) is a lactic acid bacteria species found on plants that is essential for many plant food fermentations. In this study, we investigated the intraspecific phenotypic and genetic diversity of 13 L. plantarum strains isolated from different plant foods, including fermented olives and tomatoes, cactus fruit, teff injera, wheat boza and wheat sourdough starter. Read More

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Establishment and characterization of a new human colon cancer cell line, PUMC-CRC1.

Sci Rep 2021 Jun 23;11(1):13122. Epub 2021 Jun 23.

Department of Pathology, Cell Resource Center, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences (CAMS) & School of Basic Medicine, Peking Union Medical College (PUMC), Beijing, 100005, People's Republic of China.

Colorectal cancer (CRC) is one of the most common and fatal gastrointestinal cancers worldwide. Considering their diversity, the establishment of new continuous CRC cell lines with clear genetic backgrounds will provide useful tools for exploring molecular mechanisms, screening and evaluating antitumor drugs in CRC studies. Our de novo CRC cell line, PUMC-CRC1 (Peking Union Medical College Colorectal Cancer 1) was derived from a 47-year-old Chinese female patient diagnosed with moderately to poorly differentiated colon adenocarcinoma. Read More

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Diversity of Taiwanese Brackish Crabs Genus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) based on DNA Barcodes, with Descriptions of Two New Species.

Zool Stud 2020 20;59:e59. Epub 2020 Nov 20.

Department of Life Science, National Chung Hsing University, 250 Kuo Kuang Road, Taichung 402, Taiwan. E-mail: (Hsu).

Species in the brackish crab genus are common in the seashore and estuary habitats with freshwater input. Due to their similar morphologies and dull colorations, it is always difficult to distinguish the species in this genus. In this study, the DNA barcode gene (cytochrome oxidase subunit I) was used to help identify from Taiwan. Read More

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November 2020

Individual haplotyping of whale sharks from seawater environmental DNA.

Mol Ecol Resour 2021 Jun 19. Epub 2021 Jun 19.

Australian Institute of Marine Science, Crawley, WA, Australia.

Population genetic data can provide valuable information on the demography of a species. For rare and elusive marine megafauna, samples for generating the data are traditionally obtained from tissue biopsies, which can be logistically difficult and expensive to collect and require invasive sampling techniques. Analysis of environmental DNA (eDNA) offers an alternative, minimally invasive approach to provide important genetic information. Read More

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