1,720,959 research outputs found
MOLECULAR CHARACTERIZATION AND IN VIVO ACTIVITY OF PSEUDOMONAS FLUORESCENS STRAIN 4, A POTENTIAL BIOCONTROL AGENT AGAINST RHIZOCTONIA SOLANI ROOT ROT ON LAMB’S LETTUCE.
No full textSELECTION AND IN VITRO CHARACTERIZATION OF POTENTIAL BIOCONTROL AGENTS TO PROTECT LAMB’S LETTUCE IN HYDROPONICS.
No full textQuantitative real-time PCR and high-resolution melting (HRM) analysis for strain-specific monitoring of fluorescent pseudomonads used as biocontrol agents against soil-borne pathogens of food crops
Get PDFFluorescent pseudomonads colonizing roots of crop plants and producing antifungal metabolites are
regarded as a reliable alternative to chemical fungicides against soil-borne phytopathogens. Key factors
in successful pathogen control are presence and activity at the appropriate concentration, time, and place
of biocontrol agents. Thus, quantification methods to monitor population dynamics are pivotal to the
development of reliable application protocols. Real-time PCR is nowadays the most widespread cultureindependent
technique for the detection and enumeration of different target sequences. Here, its
implementation with high resolution melting analysis as a powerful tool to accurately discriminate
microbial inoculants is discussed
Genome Sequence and Antifungal Activity of Two Niche-Sharing Pseudomonas protegens Related Strains Isolated from Hydroponics
Get PDFStudies on the aetiology of the disease known as ochraceous leaf spots of apple in Friuli Venezia giulia
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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
Transmissible tolerance to European stone fruit yellows (ESFY) in apricot: cross-protection or a plant mediated process?
No full textEuropean Stone Fruit Yellows (ESFY) is an emerging disease caused by 'Candidatus Phytoplasma prunorum' ('Ca. P. prunorum') affecting stone fruits, as apricots. Resistant apricot cultivars are unknown, but it has been demonstrated that individual plants can recover from the disease, behaving as completely tolerant to ESFY. The status of tolerance is transmissible by grafting to successive apricot individuals, but it is not clear whether recovery corresponds to a transmissible tolerance that depends on a plant-mediated reaction or if it is due to a cross-protection promoted by a transmissible protective agent i.e. hypovirulent strain/s of 'Ca. P. prunorum'. Results achieved after prolonged field experiments support the first hypothesis. Two groups of apricot plants derived from a common recovered mother (one 'Ca. P. prunorum'-free after heat-treatment and the second not heat-treated, i.e. harbouring potential protective strain/s of the phytoplasma), behaved similarly: no plants from either of the two groups developed stable ESFY symptoms after natural infections. Corresponding groups of plants, derived from symptomatic mothers, developed a high percentage of diseased plants after natural infection. No potential protective 'Ca. P. prunorum' hypovirulent strains were detected in the asymptomatic apricot plants. The summarized evidence supports a host-defence induction, likely of epigenetic feature. The present long-term study in apricot represents an uncommon empiric proof supporting the theory of inducible resistance to pathogens in plants
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