Survival of Detached Sporangia of<i>Peronospora destructor</i>and<i>Peronospora tabacina</i>

Bashi, Esther; Aylor, Donald E.

doi:10.1094/phyto-73-1135

Cited by 41 publications

(17 citation statements)

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“…Solar radiation, temperature, and humidity can affect spore survival in the atmosphere (Gregory 1973). Most spores are extremely sensitive to even a few hours of intense sunlight (Maddison and Manners 1972, Bashi and Aylor 1983, Rotem et al 1985. However, the relationship between duration of exposure to sunlight and P. pachyrhizi viability has not been investigated.…”

Section: The Case Of Soybean Rustmentioning

confidence: 99%

Principles of the Atmospheric Pathway for Invasive Species Applied to Soybean Rust

et al. 2005

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Section: The Case Of Soybean Rustmentioning

confidence: 99%

Principles of the Atmospheric Pathway for Invasive Species Applied to Soybean Rust

et al. 2005

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“…Wavelengths between 250 nm and 270 nm are particularly lethal to spores, but radiation in these wavelengths does not reach the ground (Pomper and Atwood 1955;Sussman and Halvorson 1966). UV radiation with wavelengths above 290 nm does reach the ground, and can kill sensitive spores in a few hours (Maddison and Manners 1972;Bashi and Aylor 1983;Rotem et al 1985). Spore morphology is also important: many spores which disperse on the wind are thick-walled although this is not the case for either of the Sigatoka pathogens (Burt 1994).…”

Section: Introductionmentioning

confidence: 99%

The influence of exposure to ultraviolet radiation in simulated sunlight on ascospores causing Black Sigatoka disease of banana and plantain

Parnell

Burt

Wilson

1998

International Journal of Biometeorology

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The influence of ultraviolet (UV) radiation in simulated natural sunlight on the viability of ascospores of Mycosphaerella fijiensis, the cause of Black Sigatoka disease in banana and plantain, has been investigated as part of a study to assess the windborne spread of this pathogen from mainland Central and South America into the Caribbean. Spores were killed following continuous exposure to UV radiation for periods of 6 h or over. This relatively short exposure time suggests that the distances over which viable spores can be transported will be determined not only by the speed of the wind but also the amount of cloud cover and the time off day that spore release occurs. On this basis, wind dispersal of viable spores over distances greater than a few hundred kilometres is unlikely. These conclusions are reinforced by an examination of historical reports of the arrival of the disease in previously uninfected areas of the Americas and Africa.& k w d : Key words Ultraviolet radiation · Mycosphaerella fijiensis · Mortality · Spore · Dispersal · Banana · Airborne spores& b d y :

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“…This procedure is effective in killing micro‐organisms but, with sufficient exposure, also most higher plants (Martyn, 1969). Bashi and Aylor (1983) reported that strong (630–900 W/m 2 ) and moderate (280–630 W/m 2 ) solar irradiation can induce a rapid decline in the germination of detached sporangia of Peronospora destructor and Peronospora tabacina , whereas these sporangia survived several hours under weak solar irradiance (70–280 W/m 2 ).…”

Section: Discussionmentioning

confidence: 99%

The Response of Cochliobolus sativus to Ultraviolet‐C Radiation

Arabi

Jawhar

2001

Journal of Phytopathology

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Isolates of Cochliobolus sativus, the cause of common root rot of barley, were collected from different regions of Syria, and exposed in the laboratory to ultraviolet‐C (UV‐C) light (254 nm) during periods of 40 or 60 h with a dose rate of 2.52 × 10–3 W/cm2. Significant increases (P < 0.001) in mycelial growth and sporulation were detected in comparison with the non‐ irradiated control, and these increased with increasing exposure to UV‐C. This exposure increased the mycelial growth by 89 and 100% in the isolates CR9 and CR19, respectively, and the number of spores by 10‐ and 13‐fold, respectively. Some of the isolates retained and some increased in virulence. These data demonstrate that variation occurred in the virulence level and the resistance level of isolates and among accessions, respectively.

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Survival of Detached Sporangia ofPeronospora destructorandPeronospora tabacina

Cited by 41 publications

References 0 publications

Principles of the Atmospheric Pathway for Invasive Species Applied to Soybean Rust

Principles of the Atmospheric Pathway for Invasive Species Applied to Soybean Rust

The influence of exposure to ultraviolet radiation in simulated sunlight on ascospores causing Black Sigatoka disease of banana and plantain

The Response of Cochliobolus sativus to Ultraviolet‐C Radiation

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