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 11 of 11 for “"Hyaloperonospora arabidopsidis"”.
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New Tools to Understand Mechanisms of Nutrient Transfer from Plants to Biotrophic Pathogens
… and its natural downy mildew pathogen, Hyaloperonospora arabidopsidis (Hpa), provides a model for understanding how oomycetes colonize plants. Hpa is a model organism for many highly destructive oomycete pathogens and transcriptomics of this interaction have been well-documented. …
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The role of genotypic diversity in stabilizing plant productivity in variable environments
… stress, specifically the oomycete pathogen Hyaloperonospora arabidopsidis and viral pathogen Turnip yellows virus. Findings from research on plant phenotypic traits involved in competition and compensation in A. thaliana, were translated into the crop plant winter barley in field …
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Identification and functional characterization of RXLR effector proteins that are conserved between downy mildew pathogens and Phytophthora species
… host cellular processes. The genome of Hyaloperonospora arabidopsidis (Hpa), the causative agent of downy mildew of Arabidopsis, contains at least 134 candidate RXLR effector genes. These genes contain an RXLR motif required for effector entry into host cells. Only a small subset of …
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Molecular Analysis of Oomycete Pathogens to Identify and Translate Novel Resistance Mechanisms to Crops
… thaliana by the downy mildew pathogen Hyaloperonospora arabidopsidis (Hpa). We identified five gene clusters with expression patterns specific to the susceptible interaction. Genes from each cluster were selected and null mutants were tested for altered susceptibility to virulent Hpa. …
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Understanding Plant Pathosystems in Wild Relatives of Cultivated Crop Plants
… between Arabidopsis thaliana ecotype Col-0 and Hyaloperonospora arabidopsidis isolate Emwa1 using a publicly available RNA time-course experiment. We describe a new algorithm to sort genes into time-point specific clusters using activation and repression parameters. Gene ontology annotations …
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Understanding the role of host amino acid transporters in nutrient acquisition by oomycete pathogens
Hyaloperonospora arabidopsidis (Hpa) is a naturally occurring oomycete pathogen on Arabidopsis thaliana. It is related to downy mildews of economically important crops such as cabbage, kale and broccoli, belonging to the Brassicaceae family. Downy mildew pathogens are obligate biotrophs that …
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The Impact of Iron Deficiency on Plant-Oomycete Interactions
… pathogen infection. The oomycete pathogens Hyaloperonospora arabidopsidis, and Phytophthora capsici grew less well on iron-deficient Arabidopsis thaliana, at least in part because of observed activation of immunity due to iron stress. We screened A. thaliana T-DNA insertion mutants defective …
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Elucidating essential roles of oomycee effector proteins in immune suppression and in targeting hormonal pathways in the host plant
… Phytophthora sojae, P. ramorum, P. infestans and Hyaloperonospora arabidopsidis (Hpa) have led to the identification of a large number of candidate effector genes. These effector genes have characteristic motifs (signal peptide, RxLR and dEER) that target the effectors into plant cells. Although …
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Poly(A) Polymerase 1 (PAPS1) influences organ size and pathogen response in Arabidopsis thaliana
… increased resistance to the biotrophic oomycete Hyaloperonospora arabidopsidis and reflects activation of the salicylic acid-independent signalling pathway downstream of ENHANCED DISEASE SUSCEPTIBILITY1 (EDS1)/PHYTOALEXIN DEFICIENT4 (PAD4). Immune responses are accompanied by intracellular redox …
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Investigating the role of downy mildew effectors in host resistance and susceptibility
… specific defence responses and processes. Hyaloperonospora arabidopsidis (Hpa) is a haustorium-producing biotrophic oomycete pathogen that causes downy mildew on Arabidopsis. Over 100 candidate effectors (called “HaRxLs”), carrying a characteristic RxLR protein motif, have been predicted …
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Understanding the Impact of Plant Nutrition on Plant-Oomycete Interactions
… Nicotiana benthamiana (N. b) as model plants. Hyaloperonospora arabidopsidis as well as two Phytophthora species, Phytophothora capsici (P. cap) and Phytophothora nicotianae (P. nic) were used as model oomycete pathogens. Hpa is an obligate biotrophic pathogen that obtains nutrients directly …