Results 11 to 20 of about 15,054 (266)

THE ECOTYPE CONCEPT [PDF]

open access: yesNew Phytologist, 1946
The ecotype concept (Turesson, 1922) is a population concept, and by definition an ecotype is an intraspecific product of environmental selection arising as a result of genotypic response to a particular habitat. Accordingly, before a population qualifies for ecotype status, a relationship must be demonstrated between its heredity and the prevailing ...
J. W. Gregor, Patricia J. Watson
openaire   +3 more sources

Highly replicated evolution of parapatric ecotypes [PDF]

open access: yesMolecular Biology and Evolution, 2020
Abstract Parallel evolution of ecotypes occurs when selection independently drives the evolution of similar traits across similar environments. The multiple origin of ecotypes is often inferred on the basis of a phylogeny which clusters populations according to geographic location and not by the environment they ...
Maddie E. James   +5 more
openaire   +5 more sources

Ecotypes of the Mycobacterium tuberculosis complex [PDF]

open access: yesJournal of Theoretical Biology, 2006
A phylogeny of the Mycobacterium tuberculosis complex has recently shown that the animal-adapted strains are found in a single lineage marked by the deletion of chromosomal region 9 (RD9) [Brosch et al., 2002. A new evolutionary scenario for the Mycobacterium tuberculosis complex. Proc. Natl Acad. Sci. USA 99 (6), 3684-3689].
Smith, Noel H   +8 more
openaire   +3 more sources

Bacterial but Not Fungal Rhizosphere Community Composition Differ among Perennial Grass Ecotypes under Abiotic Environmental Stress

open access: yesMicrobiology Spectrum, 2022
Environmental change, especially frequent droughts, is predicted to detrimentally impact the North American perennial grasslands. Consistent dry spells will affect plant communities as well as their associated rhizobiomes, possibly altering the plant ...
Soumyadev Sarkar   +12 more
doaj   +1 more source

Reproductive Activity of Tsigaie Sheep Belonging to the Hill and Mountain Ecotypes

open access: yesScientific Papers Animal Science and Biotechnologies, 2023
The reproductive value of sheep belonging to the hill and mountain ecotypes of the Tsigaie breed was characterized based on the analysis of specific indexes.
Vasile Miclea   +4 more
doaj  

Whole genome sequencing reveals footprints of adaptive genetic variation in populations of Eruca sativa

open access: yesFrontiers in Ecology and Evolution, 2022
Populations of Eruca sativa (Brassicaceae) derived from arid and Mediterranean habitats exhibit ecotypic differentiation. Here, pooled DNA sequencing was used to assess adaptive genome differentiation in the two ecotypes.
Prabodh Kumar Bajpai   +3 more
doaj   +1 more source

Transcriptome Response of Metallicolous and a Non-Metallicolous Ecotypes of Noccaea goesingensis to Nickel Excess

open access: yesPlants, 2020
Root transcriptomic profile was comparatively studied in a serpentine (TM) and a non-metallicolous (NTM) population of Noccaea goesingensis in order to investigate possible features of Ni hyperaccumulation.
Agnieszka Domka   +9 more
doaj   +1 more source

Genetic Variability of Arabidopsis thaliana Mature Root System Architecture and Genome-Wide Association Study

open access: yesFrontiers in Plant Science, 2022
Root system architecture (RSA) has a direct influence on the efficiency of nutrient uptake and plant growth, but the genetics of RSA are often studied only at the seedling stage.
Agnieszka Deja-Muylle   +15 more
doaj   +1 more source

Differential Activity of Coexisting Prochlorococcus Ecotypes

open access: yesFrontiers in Marine Science, 2019
The abundance and widespread distribution of the unicellular cyanobacterium Prochlorococcus is attributed to its extensive genetic diversity. At least twelve distinct clades, or ecotypes, of Prochlorococcus have been discovered so far, and follow ...
Anne W. Thompson   +2 more
doaj   +1 more source

Biological Activities and Phenolic Profile of Bursera microphylla A. Gray: Study of the Magdalena Ecotype

open access: yesPlants
Bursera microphylla A. Gray (Burseraceae) is a medicinal plant native to Sonora, Mexico, with antioxidant, anti-inflammatory, and antiproliferative properties. However, the pharmacological potential of its ecotypes remains underexplored.
Heriberto Torres-Moreno   +6 more
doaj   +1 more source

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