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Showing 1 to 14 of 14 for “"Nonhost"”.
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Elucidating the molecular genetics of host and nonhost resistance in barley to stripe rust
… they encounter. As such, they are described as nonhosts. Nonhost resistance is often conceptualised as a qualitative separation from host resistance. Classification into these two states is generally facile, as they fail to fully describe the range of states that exist in the transition from …
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Charakterisierung der Nichtwirt-Interaktion zwischen Gerste und Pilzen der Gattung Magnaporthe
Nonhost-resistance (NHR) is the resistance shown by a plant species towards all isolates of a pathogen species. This durable type of resistance protects plants against the majority of potential pathogens. In this thesis the nonhost-interaction between barley and isolates of the fungal genus …
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The Role of Phytophthora Secreted Effectors in Determining Pathogen Host Range
… thesis, I set out to investigate the nature of nonhost resistance 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 …
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Effector-triggered immunity against Pseudomonas syringae pv. actinidiae in nonhost plants : thesis submitted to the Massey University for the degree of Doctor of Philosophy
… and 𝘕𝘪𝘤𝘰𝘵𝘪𝘢𝘯𝘢 spp. plants, however, are nonhosts to 𝘗𝘴𝘢. In our course of investigating the various nonhost resistance mechanisms in play against 𝘗𝘴𝘢, we identified several sources of resistance against several 𝘗𝘴𝘢 strains as well as a possible novel virulence mechanism used by 𝘗𝘴𝘢 and …
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Isolation and partial characterization of host cell wall surface glycoproteins: their involvement in agglutination, attachment and appressorium formation by piptocephalis virginiana
… Mortierella pusilla and M. candelabrum, host and nonhost, respectively, to the mycoparasite, Piptocephalis virginiana, were tested for their ability to agglutinate mycoparasite spores. The host cell wall protein extract had a high agglutinating activity (788 a.u. mg- t ) as compared with the …
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Properties of Three Plasmids Isolated From Plant Pathogenic Pseudomonads
… produced nearly identical symptoms on host and nonhost plants when serial dilutions of bacteria were injected directly into leaf tissue. Also, cured and plasmid-containing isolates of P. tabaci 11528 and P. tabaci BR2 produced approximately the same amount of tabtoxin. These data indicate that …
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Characterization of Effector Genes in Acidovorax citrulli the Causing Agent of Bacteria Fruit Blotch Disease of Cucurbits
… to A. citrulli, so therefore could carry nonhost resistance genes. Two T3S effectors, Aave1548 and Aave2166, triggered water soaking-like cell death in N. benthamiana, but HR-like cell death in N. tabacum. Bacterial mutagenesis and in planta disease assay confirmed that both Aave1548 and …
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Non-chemical methods for managing bacterial spot of cucurbits caused by Xanthomonas cucurbitae
… was evaluated. In the three-year rotation with nonhost crops, the severity of bacterial spot in pumpkin plots was significantly lower than the two-year rotation with nonhost crops and continuous pumpkin production. X. cucurbitae was recovered from pumpkin plant debris 15 months after harvesting …
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Maize R gene Rxo1 Confers Disease Resistance on Pepper and Nicotiana benthamiana
… for controlling BS disease is to transfer nonhost disease resistance (R) genes from other plant species into pepper plants to confer broad-spectrum and durable resistance. A maize R gene Rxo1 has been functionally transferred to rice plants and confers nonhost resistance to rice pathogen …
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Molecular and ecological characterisation of Escherichia coli from plants
… acquisition and loss of traits associated with nonhost environments, the E. coli phylogroups differ substantially in their transmission ecology, and in the adaptation levels to their host.
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Gene expression and signaling in Rxo1 governed innate immunity in cereals
… investigate the temporal expression profiles of nonhost and host responses to isogenic strains of Xanthomonas oryzae pv. oryzae (Xoo), the rice bacterial blight pathogen, and Ba with and without the Xoc type III secreted effector gene avrRxo1. Xoc AvrRxo1 induces disease resistance in maize when …
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Effect of a heavy metal on ecto- and vesicular-arbuscular mycorrhizal fungi: the physiology, ultrastructure, and ecology of copper stress and tolerance
… the results of inoculation of pine with a nonhost fungus which stimulates dichotomous branching of the root system. The compound responsible for the branching is demonstrated to be indole-3-acetic acid (IAA), a plant growth hormone. The final two chapters deal with endomycorrhizal fungi. In …
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Identification and characterization of host genes involved in regulating replication of brome mosaic virus
Brome mosaic virus (BMV) belongs to a viral class called positive-strand RNA [(+)RNA] viruses. This is the largest class of viruses and includes numerous important pathogens. BMV infects monocotyledonous plants and its replication can be recapitulated in the baker's yeast (Saccharomyces cerevisiae) …