1,721,013 research outputs found
Lysobacter
No full textThe genus Lysobacter is among the youngest bacterial genera encompassing plant beneficial strains. In the last 40 years the number of bacterial species included in this genus increased, and the advent of sequencing technologies helped to show the characteristics of these bacteria. In this regard, it was proven that the absence of a flagellum is a feature not shared by all the Lysobacter species and, moreover, the cell motility of some species mainly relies on the formation of type IV pili. Culture dependent and independent methods revealed that Lysobacter members are cosmopolitan bacteria able to colonize different environments and to persist in extreme environments. Looking at the agroecosystem, strong evidence was provided on the association of these bacteria with plants, and their correlation with the phenomenon of soil suppressiveness was also shown. Although their ability to actively colonize plants and soils, the number of Lysobacter spp. strains studied for their plant beneficial potential is still limited. This might be related to the unavailability of growth media specific for the isolation of Lysobacter members. In this chapter, a semiselective growth medium was designed for the isolation of strains belonging to L. antibioticus, L. capsici, L. enzymogenes, and L. gummosus species, based on their capability to resist antibiotics. Moreover, these species are composed mostly of the plant beneficial Lysobacter spp. strains characterized so far. Their ability to control plant pathogenic bacteria, fungi, nematodes, oomycete, and protists mainly relied on various mechanisms of action such as the competition for space, the induction of plant defense mechanisms, the predation and the release of antibiotics, lytic enzymes, and volatile organic compounds. In the last ten years, more evidence has been provided about the presence of Lysobacter spp. in agricultural soils contaminated by heavy metals and petroleum derivatives. Although in their infancy, several studies proved that bacteria belonging to this genus may be applied for the bioremediation of contaminated agricultural soils. Overall, Lysobacter spp. may be considered a valuable reservoir of novel bacterial strains that may be developed to make the future of crop production more sustainable
Oligo-dT Anchored cDNA SCoT: An Innovative Approach for Deciphering Fusarium Wilt Resistance-Related Differential Gene Expression in Chickpea
No full textThe cDNA start codon targeted marker (cDNA-SCoT) methodology is a unique, simple, quick, and efficient method for investigating differential gene expression. The differentially expressed fragments (DEFs) in resistant and susceptible cultivars were identified using cDNA-SCoT profiling. Sanger sequencing and the nBLAST homology search program were used to characterize the functional properties of DEFs. As a result, this methodology is innovative and would be utilized in future studies to identify potential functional genes, which can then be used in marker creation, marker-assisted selection, and uncovering the regulatory role of the relevant genes
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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