1,721,864 research outputs found
Fusarium diversity and the role of endophytic fusarium and bacteria on diesease resistance in lilium longilflorum
No full textLilium longiflorum, is a horticultural crop which forms an important component of the cut flower (27 million) market in the United States. It is vulnerable to fungal disease, particularly caused by Fusarium sp. In this study Fusarium species associated with L. longiflorum (Easter lily) grown in New Jersey (NJ) were compared to the Fusarium isolates from Easter lilies grown in Oregon (OR). The aim of this work was to expand the knowledge of Fusarium species associated with Easter lilies by morphological and molecular characterization. Special emphasis is placed on the Gibberella fujikuroi species complex (GFSC) isolates of F. concentricum and F. proliferatum, isolated from this host for the first time. They were characterized by their mating types and mating population, as well as their in vitro toxin production. There have been no studies of these biological species in Easter lilies. Fusarium isolates were collected not only from diseased bulbs, but asymptomatic bulbs as well as from the soil in which it was grown.GFSC isolates were identified only from the NJ area and not from OR, which had F. solani and F. oxysporum in abundance. All the GFSC isolates were from asymptomatic bulbs and hence could be called endophytic. In the second part, two endophytic bacteria from healthy bulbs were isolated and identified as Bacillus sp. and Pseudomonas sp. by 16S rRNA gene sequencing. Phylogenetic analysis of unknown sequences along with sequences from GenBank and EMBL grouped the endophytic bacterial trains with Bacillus amyloliquefaciens and Pseudomonas fluorescens, respectively. This is the first report describing the association of such endophytic bacteria with this host. Microscopic studies revealed the intercellular location of the endophytic bacteria while the fungus was present in the outer epidermal layers. Dual plate assays and in vitro spore germination tests were carried out to determine the potential antagonistic activity of the bacteria towards pathogenic and non-pathogenic fungal isolates. Many isolates of Fusarium species were screened to characterize their pathogenicity. The non-pathogenic Fusarium species along with the endophytic bacteria were tested for disease control based on suppression of pathogen infection. Bacillus sp. was determined to be the best potential biocontrol agent followed by less pathogenic isolates of F. concentricum and F. oxysporum and then Pseudomonas sp. There is a significant potential for using these results in horticultural crop production.Ph. D.Includes bibliographical referencesby Nimmi Rajmoha
"Handbook of biomedical optics", edited by David A. Boas, Constantinos Pitris, and Nimmi Ramanujam
Get PDFAbstract David A. Boas, Constantinos Pitris, and Nimmi Ramanujam, Eds.: Handbook of Biomedical Optics CRC Press, Taylor and Francis Group, Boca Raton, London, New York, 2011 ISBN: 978-1-4200-9036-9 (Hardback), 787 pages</p
Why a volume on qualitative methods for digital social research from the global South?
No full textThis volume presents fourteen critical explorations in digital studies, grounding qualitative approaches to digital social research within the often-overlooked geographies of the Global South. Digital social research operates within complex sociotechnical landscapes, encompassing a wide array of technologies, products, users, and contexts of use. This diversity is exemplified by the rise of Web 2.0 technologies leveraging digital and stored data from varied social platforms and digital ecosystems. Digital technologies have transformed the research field into a dynamic, coconstructed space shared by users, researchers, and digital artifacts marking a significant move toward more adaptive and qualitative approaches in digital social research. By re-evaluating the role of technology in society, this volume provides diverse perspectives and methodologies, offering both innovative theoretical frameworks and practical insights for designing and implementing technology effectively
Enhancing creativity via workplace well-being and serious leisure: employee and organizational benefits via the new psychological contract
No full text
Digital dilettante and the creation of romance
No full textNimmi rangaswamy explores myriad experiments with creative expressions of the constructing the self in the digital sphere summarizing a 12-year research journey with young adults and social media. Discussions of anonymity and pseudonymity, of intimacy, desire, connection, and attention will draw examples from the marginalized sections of youth in India. Romance emerges as the social theme underlying the power of digital media to overcome social constraint overlaying the thirst to connect, friend and chat going beyond Goffmanesque social performativity and towards defining potential social transgressions. Romance is the medium channeling and staging fantasies, aspirations and play to explore potential possibilities of social mobility
Il rapporto tra la percezione del mercato del lavoro, occupabilità percepita e sostenibilità di carriera: evidenze da uno studio cross-nazionale tra India e Italia.
No full textExploration of Medicine Shortages and Demand Forecasting in Managing Medicine Shortages in State Hospitals, Sri Lanka
No full text- …
