Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 156 for “"Biocontrol"”.
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Killer yeasts as antifungal biocontrol agents
The ability of killer yeast to inhibit the growth of fungi, specifically wood decay fungi, has been investigated. An initial broad screen of 17 yeast versus 17 fungi demonstrated that killer yeast can and do exhibit antagonistic as well as growth stimulatory affects on fungi. Yeast from the …
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BIOCONTROL OF ROOT ROT COMPLEX IN FIELD PEA AND LENTIL AND COMPLETE GENOME ANALYSIS OF BIOCONTROL BACTERIA
… and Pantoea agglomerans PSV1-7, as potential biocontrol agents against ARR in field pea under controlled growth chamber condition. Therefore, the purpose of this study was to i) investigate the potential for biological control of RRC caused by A. euteiches, F. avenaceum and F. oxysporum and …
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Biocontrol Systems for Rhizotocnia Disease of Soybean
… of extracellular enzymes in antagonism and biocontrol. Antagonism by cell-free culture filtrate fractions indicated that strain B153-2-2 produced an active metabolite. Endopeptidase, acid protease, and an extracellular proteinase (metalloproteinase) were detected in the interaction and were …
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GRAPEVINE-ASSOCIATED MICROORGANISMS AS BIOCONTROL AGENTS AGAINST THE PROLIFERATION OF PATHOGENIC FUNGI
This PhD project aim at selecting potential biocontrol agents able to prevent, or limit, the infection of grapevine and grape (table and wine) by pathogenic fungi, in pre- harvest periods, in order to set an eco-friendly plant protection strategy as alternative to reduce both the use of chemicals …
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Biocontrol of Rhizoctonia Solani on Soybean With Bacillus Amyloliquefaciens Producing Iturin A
Three major antifungal compounds produced by strain B94 were purified from the culture filtrate using chromatography techniques including ultrafiltration, SPE, TLC, and HPLC. Amino acid composition analysis showed all the three isolated compounds consist of Asn, Gln, Ser, Pro, and Tyr in a molar …
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Studies on growth and filtration of the antagonistic biocontrol yeast Cryptococcus albidus
… to hinder the dewatering of the antagonistic biocontrol yeast Crytococcus albidus. Throught literature a hypothesis was developed that the extracellular polysaccharide produced by C. albidus is the major cause of hindrance to the filtration process. Microscopic analysis of C. albidus cultures …
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A NEW STRATEGY FOR MOSQUITO BIOCONTROL BASED ON THE IMPROVEMENT OF BACILLUS THURINGIENSIS EFFECTIVENESS
Mosquitoes are insects with a worldwide geographical distribution. Several species are known to spread animal and human illnesses, such as the Zika fever, Dengue fever, and malaria. This is due to the vectorial competence of adult females that is the ability to acquire a pathogen from an infected …
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Soft rot Enterobacteriaceae-molecular detection and biocontrol under in vitro and in vivo conditions
… of commercially available and effective biocontrol measures to counteract soft rot pathogens. <br/><br/>The first aim of this study was to describe the diversity of Pectobacterium and Dickeya spp. detected in vegetables from several locations in Northern Ireland in the years 2015 - 2017. …
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Novel antagonistic bacteria as prospective agents for the biocontrol of some plant bacterial diseases
… 2000). Bacillus subtilis is well known as biocontrol agent in soil conditions (Bochow, 1992). Pantoea agglomerans is an epiphytic as well as a soil inhabitants too Brenner (1983) and Vanneste (2000) The strategy of this study has been to find antagonists against different types of diseases …
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Resource partitioning in buds and insect induced galls in the biocontrol of Acacia pycnantha
Two Trichilogaster sp. (gall-forming wasps) have been introduced against Acacia longifolia and Acacia pycnantha in the Cape. Trichilogaster acaciaelongifoliae has reduced both seed production (by between 85 and 100% in the Cape) and vegetative growth in Acacia longifolia. The aim of this project …
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Molecular characterization of tomato brown rugose fruit virus-host interactions and development of biocontrol strategies
… develop a disease management approach through biocontrol. In this dissertation, the genomes of three ToBRFV Canadian isolates were cloned and sequenced, and full-length cDNA infectious clones were constructed. Defective mutation analyses revealed that ToBRFV movement protein (MP) and coat …
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A CONTRIBUTION TO THE STUDY OF BIOCONTROL AGENTS APITHERAPY AND OTHER POTENTIAL ALTERNATIVES TO ANTIBIOTICS
We are living in what has been termed the “post antibiotics era’ where the emergence of multidrug-resistant pathogen strains is rapidly growing and where the introduction of and the development of novel antimicrobial agents, which are effective against these pathogens has declined significantly. As …
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Biology of Soybean Anthracnose Fungi and Their Interaction With Other Soybean Fungi (Colletotrichum, Synanamorph, Biocontrol)
Bright-field microscopy and scanning electron microscopy studies revealed that conidia of Colletotrichum truncatum and Glomerella glycines germinated terminally and subterminally with germ tubes that developed appressoria. Germ tubes were longer when on the midribs than in leaf laminae of soybean …
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Trophic Interactions And The Efficacy Of Milfoil Weevils For Biocontrol Of Eurasian Watermilfoil In Wisconsin Lakes
… too small to effect control. Augmentative biocontrol has had varied success and fish predation may account for high weevil mortality. Weevils were augmented in 4 northern Wisconsin lakes in summer 2013. In summer 2014, I collected invertebrates associated with EWM plus 442 bluegill (Lepomis …
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An agent-based model to simulate virus-based biocontrol for the soybean cyst nematode, Heterodera glycines
… performing inconsistently. Biological control (biocontrol) has recently been seen as a promising addition to IPM. Viruses are relatively more stable and therefore more persistent in soil, they do not need to form complicated infection structures, they can be cultured on a commercial scale, and …
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Biocontrol de Rhizoctonia solani en cultivo de frijol, mediante aislamiento de Trichoderma spp. a nivel de invernadero
… a mayo de 1995. El propósito fue evaluar el Biocontrol de Rhizoctonia solani Kunh en el cultivo de frijol, mediante aislamientos de Trichoderma spp a nivel de invernadero para lo cual fue necesario desarrollar dos fases. Una a nivel de laboratorio, que consistió en la obtención de colonias …
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