definition “ niche describes the role of an organism in its particular ecosystem ” the term ‘niche’ was first used by joseph grinnel in 1917. he stated niche as an ultimate distributional unit, within which each organism is held by its instinctive and structural limitations. he also stated...
How stem cells interact with their niche is of particular relevance in the discussion of aging and stem cells. A niche does not afford stemcells protectionagainst systemic environmental changes in the body; rather, it is a buffer zone between the stem cells and the systemic environment. Thebasem...
(2005). Genomic insights that advance the species definition for prokaryotes. Proc Natl Acad Sci USA 102: 2567–2572. CAS PubMed PubMed Central Google Scholar Kunin V, Engelbrektson A, Ochman H, Hugenholtz P . (2010). Wrinkles in the rare biosphere: pyrosequencing errors can lead to ...
is to be emphasized, then one can speak ofenvironmentalsynanthropism (O’Connor2013), although this does not preclude synanthropic animals from falling into both categories. Another difference between synanthropism and the classical definition of commensalism is the + /0 relationship, which ne...
In the present study, environmental niche modeling (ENM) was used to identify the environmental niche overlap and land-use and vegetation cover variables that favor the presence of the invasive species Rainbow trout (Oncorhynchus mykiss) and its amphibian prey, including the Mountain stream salamander...
(2009). Shifting the genomic gold standard for the prokaryotic species definition. Proc Natl Acad Sci USA 106: 19126–19131. Rinke C, Lee J, Nath N, Goudeau D, Thompson B, Poulton N et al. (2014). Obtaining genomes from uncultivated environmental microorganisms using FACS-based single-cell...
The role of bacterial symbionts that populate octocorals (Cnidaria, Octocorallia) is still poorly understood. To shed light on their metabolic capacities, we examined 66 high-quality metagenome-assembled genomes (MAGs) spanning 30 prokaryotic species, re
, which depends on both the distance to the nearest record of the target organism and the terrain ruggedness. The terrain ruggedness is defined as the difference in elevation between adjacent cells in a digital elevation grid covering the area of study. This is a standard definition (Topographic...
We further focus on the relationships between these definitions and the more rigorously established definition in some of the so-called classical “model” organisms (vertebrates and the ecdysozoans D. melanogaster and C. elegans). Ultimately, the results of this review enable us to articulate an...
According to the definition, the members of this peptide family show, besides proteinogenic amino acids,i) a relatively high content of the markerα-aminoisobutyric acid (Aib), which is often accompanied by otherα,α-dialkylα-amino acids such as D- and/or L-isovaline (Iva) or, occasiona...