Lethal effects of artificial ultraviolet radiation on cereal rust uredospores

Maddison, A. C.; Manners, J.G.

doi:10.1016/s0007-1536(73)80032-4

Cited by 25 publications

(11 citation statements)

References 14 publications

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“…Sackston (1971, 1972) found that daylength and light intensity had little effect on the germination of some basidiospores, but higher light intensity had an adverse effect on the germination of the spores. Maddison and Manners (1973) proposed that the nucleic acids and proteins of spores were affected by high-intensity light. The light intensity on the forest fl oor and in the litter may have no signifi cant inhibitive effects on the spore germination of H. vinosophyllum, although we cannot completely deny the possibility that sunlight fi ltering down through the trees affects the spore germination of this fungus, e.g., shortening of the longevity of the spores.…”

Section: Longevity Of Basidiospores Of H Vinosophyllum At Different mentioning

confidence: 99%

Effects of pH, NH4-N concentration, temperature, and storage period on basidiospore germination in an ectomycorrhizal ammonia fungus Hebeloma vinosophyllum

Deng

Suzuki

2008

Mycoscience

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Section: Longevity Of Basidiospores Of H Vinosophyllum At Different mentioning

confidence: 99%

Effects of pH, NH4-N concentration, temperature, and storage period on basidiospore germination in an ectomycorrhizal ammonia fungus Hebeloma vinosophyllum

Deng

Suzuki

2008

Mycoscience

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“…Maddisson and Manners, 1973;Rotem et al, 1985), the samples were kept in darkness after exposure in order to avoid the effect of photoreactivation (Jagger, 1958 conditions between irradiation exposure periods. Thus, the results obtained reflect the combined effects of radiation and also photoreactivation, but represent more realistic conditions than complete darkness until the assessment.…”

Section: Experimental Conditionsmentioning

confidence: 99%

“…These results are consistent with reports on other fungi, as Puccinia spp. (Maddisson and Manners, 1973) and Paecilomyces fumosoroseus (Smits, 1992).…”

Section: Controlled Conditions Experimentsmentioning

confidence: 99%

“…The influence of radiation on the development of U. necator thus remains unclear. Studies conducted on several aerial fungi showed that radiation could be a limiting factor for their development, the spectral part corresponding to UV B being mainly responsible of this effect (Fargues et al, 1988;Fargues et al, 1989;Maddisson and Manners, 1973;Rotem et al, 1985;Rougier et al, 1993;Smits, 1992;Stevenson and Pennypacker, 1988). Spore survival can also be affected by increasing surface temperature caused by radiation (Rotem et al, 1985;Rougier et al, 1993;Smits, 1992;Smits et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

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Effects of radiation, especially ultraviolet B, on conidial germination and mycelial growth of grape powdery mildew

Willocquet

Colombet

Rougier³

et al. 1996

Eur J Plant Pathol

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Conidia of Uncinula necator inoculated on vine leaf disks were exposed to different irradiation conditions during various combinations of irradiation periods. In controlled experiments at constant leaf temperature spore germination and mycelial growth were negatively affected by the UV B doses, irrespective of the exposition duration. In semi-controlled condition experiments, conidia were exposed to shaded, sunny and sunny without UV B radiation conditions. Shaded conditions were always more favourable to spore germination and mycelial growth than sunny conditions. Under two different ranges of temperature (20-24 and 26-31 ~ for shaded conditions), the effect of radiation on germination and mycelial growth differed. Thus, the effect of radiation on spore germination and mycelial growth seems to be affected by temperature. In general, radiation effects increased as the number of exposition periods increased, indicating that both spore germination and mycelial growth were reduced, but not totally stopped by the different exposures. Germination was most affected by exposures applied just after inoculation, whereas mycelial growth was most affected by exposures applied one day after inoculation. These results indicate that radiation is an important factor to consider for a better understanding of the relationships between climate and grape powdery mildew epidemics.

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“…The sensitivity of rust urediniospores to UV radiation differs between species, where those that are lighter pigmented (e.g. P. striiformis ) are more sensitive (Maddison & Manners, ). For urediniospores of P. pachyrhizi , it was extrapolated that long distance travel must occur under cloud cover in order to retain viable spores (Isard et al ., ).…”

Section: Monocycle Components Of the Epidemicmentioning

confidence: 99%

Asian grapevine leaf rust caused by Phakopsora euvitis: an important disease in Brazil

Primiano¹,

Loehrer

Amorim³

et al. 2017

Plant Pathology

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Anthropogenic influences such as tourism and climate change affect ecosystems. One consequence is that invasive species can spread to and colonize novel areas. A recent example of this scenario is the appearance, in the early 2000s in Brazil and Australia, of the plant pathogenic fungus Phakopsora euvitis, which causes Asian grapevine leaf rust. It is speculated that the disease was introduced either by long distance transport of spores in the atmosphere or the import of contaminated plant material. While the disease could be eradicated from the Australian continent it is still present in Brazil. The pathogen has spread successfully throughout most Brazilian grapevine-growing regions, most probably because of the lack of resistant plant cultivars. Today, the disease is endemic in Brazil. This review was written to highlight the increasing impact of the disease in Brazil and summarizes the current knowledge on the disease monocycle under different environmental conditions and the consequences for grapevine management. Gaps in the present state of knowledge are highlighted with the purpose of stimulating further research aimed at identifying efficient strategies to combat the disease.

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Lethal effects of artificial ultraviolet radiation on cereal rust uredospores

Cited by 25 publications

References 14 publications

Effects of pH, NH4-N concentration, temperature, and storage period on basidiospore germination in an ectomycorrhizal ammonia fungus Hebeloma vinosophyllum

Effects of pH, NH4-N concentration, temperature, and storage period on basidiospore germination in an ectomycorrhizal ammonia fungus Hebeloma vinosophyllum

Effects of radiation, especially ultraviolet B, on conidial germination and mycelial growth of grape powdery mildew

Asian grapevine leaf rust caused by Phakopsora euvitis: an important disease in Brazil

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