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Showing 1 to 20 of 141 for “"Phytophthora"”.
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Glucan synthase of Phytophthora sojae
… for glucan synthase activity was done using Phytophthora cinnamomi (Wang and Bartnicki-Garcia, 1976, Selitrennikoff 1995). In this work, the glucan synthase of the oomycete Phytophthora sojae was characterised, solubilized, and partially purified, and the cDNA for a protein co-purifying with …
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Interaction Between Soybean and Phytophthora Sojae
Phytophthora sojae is a major pathogen of soybean, causing an estimated yield loss of 560,300 metric tons in 1994 in the United States. Thirteen resistance alleles at seven loci have been identified in soybean that control race-specific resistance. There are currently 53 races of P. sojae. The …
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Using targeted phenomics and environmental proxies to understand Phytophthora medicaginis and Phytophthora root rot resistance in Australian chickpea
Australian chickpea production is constrained by Phytophthora root rot (PRR), caused by the soil-borne oomycete Phytophthora medicaginis. Yield penalties are exacerbated by waterlogging resulting in partial or complete crop losses with few control options. Higher levels of PRR resistance have been …
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Phytophthora diversity in the Cape Floristic Region
… economy. Aggressive plant pathogens in the genus Phytophthora are of particular concern because of their capacity to invade and change plant communities and their frequent dissemination via global trade. The fact that South Africa has a developing economy with many socioeconomic challenges, the …
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Laboratory and field evaluation of efficacy of potential fungicides for managing phytophthora blight (Phytophthora capsici) of processing pumpkin (Cucurbita moschata)
Phytophthora blight, caused by the oomycete Phytophthora capsici Leonian, is a destructive disease that severely limits the production of processing pumpkin (Cucurbita moschata Duchesne). This study was conducted to evaluate the efficacy of the potential eight fungicides or their combinations …
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New Species and Phylogeny of the Genus Phytophthora
The genus Phytophthora includes many agriculturally and ecologically important plant pathogens. Characterization of new Phytophthora species is the first and a most critical step to understanding their biology, ecology and economic importance. Six novel Phytophthora species recovered from …
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Phytophthora nicotianae: Fungicide Sensitivity, Fitness, and Molecular Markers
Mefenoxam has been a premier compound for Phytophthora disease control in the nursery industry for 30 years. The primary objectives of this research were to examine whether Phytophthora species have developed resistance to this compound and to investigate fungicide resistance management strategies. …
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Inheritance of virulence in the root rot pathogen Phytophthora sojae
The oomycete Phytophthora sojae causes stem and root rot of soybean plants. The interaction of pathogen avirulence (Avr) and host resistance (R)-genes determine the disease outcome. The Avr3a mRNA transcript level is variable among P. sojae strains and determines virulence towards the R-gene Rps3a. …
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Interaction between Phytophthora megasperma f. sp. glycinea and Glycine max
The Glycine max (soybean): Phytophthora megasperma f. sp. glycinea (Pmg) pathosystem has served as a model for elucidating the mechansim of incompatibility in gene-for-gene interactions. This interaction was accurately and precisely investigated on the taproots of aeroponically-grown soybeans. An …
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The Role of Phytophthora Secreted Effectors in Determining Pathogen Host Range
… responses of Nicotianae sylvestris against Phytophthora capsici and P. infestans. Schulze-Lefert and Panstruga (2011) proposed that the inability of a pathogen to establish infection in nonhost plants could be a feature of the phylogenetic distance between host and nonhost plants. In …
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Mycorrhizal Infection of Soybean Roots as It Influences Phytophthora Root Rot
Made available in DSpace on 2014-12-14T04:37:46Z (GMT). No. of bitstreams: 1 7913665.pdf: 1306499 bytes, checksum: 4914f12e8349e702db18c3883cef6f63 (MD5) Previous issue date: 1978
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Techniques for isolating Phytophthora megasperma var. sojae from soil and plant tissue
Photocopy of typescript.
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Lignin as a mechanism of field resistance to Phytophthora rot in soybeans
Call number: LD2668 .T4 1984 C87
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Lignin as a mechanism of field resistance to Phytophthora rot in soybeans
Call number: LD2668 .T4 1984 C87
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Die-back of cold tolerant Eucalyptus associated with Phytophthora spp.in South Africa
Thesis (PhD)--University of Pretoria, 2010.
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Analyses of the in vitro effects of phosphite on Phytophthora cinnamomi isolates
Phytophthora Root Rot, caused by the oomycete Phytophthora cinnamomi (Rands), results in devastating decreases in avocado yields every year. Successful management of P. cinnamomi relies on many features, one of which is chemical control by phosphite. Despite its continuous use in South Africa for …
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