Results 131 to 140 of about 634 (163)

Sensitization to the fungus Hemileia vastatrix (coffee leaf rust)

Allergy, 2001
Background: The aim of the present study was to determine the existence of sensitization to the fungus Hemileia vastatrix (coffee leaf rust) in a sample of the Brazilian population. This fungus attacks coffee plantations, and in some regions of Brazil the concentration of its spores in the air can be very high.
M A, Croce , E R, da Costa Manso, W, Gambale, L, Takayama, C E, Oliveira Andrade, J H, Pereira Pinto, F F, Morato Castro, J, Croce   +7 more
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A New type of Nuclear Life Cycle in Hemileia Vastatrix

Mycologia, 1967
Hemileia vastatrix1 is the cause of rust disease of coffee, and there have been many investigations of its life cycle. This rust is characterized by the formation of non-resting teliospores which germinate in situ and produce sporidia, which, however, are unable to reinfect coffee, which suggests that they are non-functional2–4.
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Hemileia vastatrix HvCat Genome sequencing

2013
Coffee rust Genome sequencing. Isolate of coffee rust taken from Coffea arabica var. Carurra leaves.
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Studies on the biology of Hemileia vastatrix Berk. & Br

Transactions of the British Mycological Society, 1963
Germination of the uredospores of Hemileia vastatrix can occur only in the presence of liquid water, either in the dark or in light of low intensity, the latter stimulating the onset of germination at low, but not at optimal temperatures. On agar the optimum is 22° C, the minimum 15·5° and the maximum 28·5°.
F.J. Nutman, F.M. Roberts, R.T. Clarke
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Genetic diversity in Hemileia vastatrix based on RAPD markers

Mycologia, 2005
Random amplified polymorphic DNA (RAPD) was used to assess the genetic structure of Hemileia vastatrix populations. Forty-five rust isolates with different virulence spectra and from different hosts and geographical regions were analyzed. Out of 45 bands, generated with three RAPD primers, 35 (78%) were polymorphic and scored as molecular markers ...
Gouveia, M. Manuela C., Ribeiro, Ana, Várzea, Vítor M. P., Rodrigues Jr., Carlos J.   +3 more
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Possible insect vectors of the uredospores of Hemileia vastatrix in Kenya

Transactions of the British Mycological Society, 1963
Evidence is presented that two species of parasitic Hymenoptera, Leptacis kivuensis and Synopeas sp., are vectors of the uredospores of the coffee leaf-rust fungus Hemileia vastatrix Berk. & Br. in Kenya. Their chief importance is probably in carrying the initial spore inoculum to new plantations remote from other coffee.
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6. Variation for incomplete resistance to Hemileia vastatrix in Coffea arabica

Euphytica, 1983
Variation for incomplete resistance to coffee leaf rust was studied in Coffea arabica. Disease level in the field was scored by a 0 to 9 scale. Components of resistance observed in laboratory and greenhouse tests were latency period (LP), lesion density (LD) and leaf retention period (LRP). LRP determines the duration of sporulation.
A. B. ESKES, A. Carvalho
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Dispersal of uredospores of Hemileia vastatrix under field conditions

Transactions of the British Mycological Society, 1962
The number of uredospores of Hemileia vastatrix Berk. & Br. in the air at times which are critical for seasonal build-up of infection is excessively low; this, together with the effect of spore density on infection, suggests that wind plays no part in dispersal.
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Hemileia vastatrix HvCat isolate:HvCat Transcriptome or Gene expression

2018
Transcriptomic analysis of the coffee ...
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Hemileia vastatrix (coffee leaf rust)

PlantwisePlus Knowledge Bank, 2022
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