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 145 for “"streak"”.
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Maize Streak Virus: diversity and virulence
… confronting maize farmers in Africa, Maize streak virus (MSV) is the most significant.
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Virus-host interactions in the cassava brown streak disease pathosystem
… virus-host plant interactions for cassava brown streak disease (CBSD) caused by two viruses, Cassava brown streak virus (CBSV) and Ugandan Cassava brown streak virus (UCBSV) of the genus Ipomovirus, family Potyviridae. The diversity of six CBSD isolates from the endemic (Kenya, Malawi, Mozambique …
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Investigations of the molecular determinants of maize streak virus replication
… in the mastreviruses, and in particular maize streak virus (MSV), has yet to be fully explored. A theoretical model has been proposed based on sequence data and informed by the current understanding of replication specificity in begomoviruses. Due to the lack of conservation of the stem …
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Inactivation and transmission studies of the carnation viruses mosaic and streak
Typescript (photocopy).
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Molecular biological studies of Southern African isolates of maize streak virus
… of the nature of variation of maize streak virus (MSV) isolates in Southern Africa. Three isolates from distinct geographical locations, which produced different symptoms, were chosen for this purpose. Serological tests performed with antisera raised to two of the isolates showed the …
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Testing for host adaptive evolution using the maize streak virus model
Maize streak virus (MSV; Genus: Mastrevirus; Family: Geminiviridae) causes maize streak disease (MSD); a major biotic threat to maize farming especially in sub-Saharan Africa, and it neighbouring Indian and Atlantic Ocean Islands, where its insect vectors in the genus Cicadulina thrive. Of the …
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<i>Maize fine streak virus</i> (MFSV) gene expression and protein interaction
<i>Maize fine streak virus</i> (MFSV) belongs to the family Rhabdoviridae, and is transmitted by the leafhopper <i>Graminella nigrifrons</i>. The MFSV genome is a 13,782 nucleotide, non-segmented, negative-sense RNA that encodes five core structural proteins: the nucleocapsid protein (N), the …
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Volumetric Particle Streak -Tracking Velocimetry and Its Application in Indoor Airflow Measurements
The developed VPSTV system was applied in the measurements of airflow patterns and air distributions at three different levels of ventilation rate for each of two room layouts of an indoor ventilation system. This can be considered as an overall test of the system and the operating method. The …
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Predicting the Spread and Management of the Cassava Brown Streak Disease Epidemic
Cassava Brown Streak disease (CBSD) is a viral disease of cassava that causes necrosis of the edible root tissue, which reduces both consumable and marketable yield. In 2004, CBSD emerged in Uganda and has since been spreading rapidly through previously unaffected regions of East Africa and into …
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Investigations into the use of maize streak virus as a gene vector
… use of the Subgroup I geminivirus, maize streak virus (MSV), as a gene vector. These involved testing MSV-based replicons in transgenic cell lines, in transient expression assays in maize cells and in an infectious gene expression system in plants. MSV vectors which contained three …
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Architecture and assembly of maize streak virus: insights from 3D electron microscopy
Maize streak virus (MSV), circular single stranded DNA (ssDNA) virus (~2.7kb), is the causative agent of Maize streak disease, and is a devastating pathogen that causes severe crop losses to subsistence farmers in sub-Saharan Africa. MSV is transmitted by the leafhopper Cicadulina mbila, and is the …
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Molecular diagnostics, genetic diversity and generating infectious clones for cassava brown streak viruses
Cassava brown streak disease (CBSD) threatens cassava production in eastern and southern African countries. Diagnostic protocols currently available for the causal agents of CBSD, Cassava brown streak virus (CBSV) and Cassava brown streak Uganda virus (CBSUV), were unreliable but were urgently …
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Epidemiology of Banana streak virus (BSV) in East African highland bananas (AAA-EA)
… of the epidemiology and ecology of Banana streak virus (BSV) in Uganda, generating information useful in designing management strategies to limit the spread of BSV. An identification key for the mealybugs on Musa in Africa was constructed. Screenhouse transmission experiments identified …
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Evolutionary studies of wheat streak mosaic-associated viruses and characterization of the wheat virome
Wheat viruses including Wheat streak mosaic virus (WSMV), Triticum mosaic virus (TriMV), High Plains wheat mosaic emaravirus (HPWMoV), and Barley yellow dwarf virus (BYDV) cost substantial losses in crop yields annually. Although there have been extensive studies conducted on known wheat viruses, …
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Phenotypic and biochemical characterisation of the causal agent of bacterial leaf streak of maize
… 10% of crop production losses. Bacterial leaf streak (BLS) of maize was first reported in South Africa in 1949 and has not been reported elsewhere. Very little is known about the pathogen involved and therefore it is deemed necessary to compile a characteristic profile for the pathogen to …
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Inheritance of Resistance in Dent Corn to Wheat Streak Mosaic Virus and Erwinia Stewartii
Host resistance is the primary means of controlling diseases of field crops, such as dent corn (Zea mays L.). Knowledge of the inheritance of resistance facilitates its incorporation into agronomically desirable germplasm. Relatively little is known about the inheritance of resistance in corn
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Effects of wheat streak mosaic virus and interactions with other cereal viruses on wheat
… The effects of an Illinois isolate of wheat streak mosaic virus (WSMV) on yield of selected hard red spring wheat and soft red winter wheat cultivars were evaluated in three studies. In spring and fall of 1993 and 1994, twenty hard red spring wheat cultivars and fourteen soft winter wheat …
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