Effect of Temperature and Host:Parasite Combination on the Latent Period of<i>Puccinia recondita</i>in Seedling Wheat Plants

Eversmeyer, M. G.; Kramer, C. L.; Browder, L. E.

doi:10.1094/phyto-70-938

Cited by 37 publications

(19 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The observed relationship of the rate of development of rose powdery mildew, expressed as the reciprocal of the latent period, to constant temperature, was described adequately by a nonlinear model. Development of powdery mildew is slower at temperatures above and below the optimum of 22°C, with the response curve skewed to the lower temperatures; this is consistent with published reports of the effects of temperature on disease development ( Eversmeyer et al ., 1980 ; Beresford & Royle, 1988; Shaw, 1990; Wadia & Butler, 1994; Xu, 1996). The length of the latent period at 3°C given by the fitted thermodynamic model is close to that obtained by Price (1970).…”

Section: Discussionsupporting

confidence: 90%

Effects of temperature on the latent period of the rose powdery mildew pathogen, Sphaerotheca pannosa

1999

Plant Pathology

View full text Add to dashboard Cite

The effects of temperature on the length of the latent period of rose powdery mildew, caused by Sphaerotheca pannosa var. rosae, were studied. At constant temperatures over the range of 10-28ЊC, the length of the latent period ranged from 4 to 10 days. The relationship between temperature and the rate of fungal development during the latent period (expressed as the reciprocal of the latent period) was described by a nonlinear (thermodynamic) model. The resulting curve was asymmetrically bell-shaped with an optimum temperature of about 22ЊC. The latent period was further subdivided into two periods: incubation period (from inoculation to visible colonies) and postincubation period (from visible colonies to the first sign of conidiophores). The relationship between temperature and the rate of fungal development during the incubation period (expressed as the reciprocal of the incubation period) was also well described by a thermodynamic model. In contrast, the relationship between temperature and the rate of fungal development during the postincubation period (expressed as the reciprocal of the postincubation period) was approximately linear. The latent period under fluctuating temperatures was predicted using a two-stage integration scheme at a step of 24 min by first integrating the incubation rate and then the postincubation rate. The predicted length of the latent period agreed well with the observed values.

show abstract

Section: Discussionsupporting

confidence: 90%

Effects of temperature on the latent period of the rose powdery mildew pathogen, Sphaerotheca pannosa

1999

Plant Pathology

View full text Add to dashboard Cite

show abstract

“…Northern isolates had the longest LP while southern isolates and P1 (PstS2) had the shortest. Differences in aggressiveness among isolates have been reported to be greatest under nonoptimal conditions, as exemplified on LP for Puccinia triticina and Pst isolates (Eversmeyer et al ., ; Johnson, ; Milus et al ., ). Furthermore, an interaction between variety and isolate was observed for LP at cold temperature regimes and for IE at 5 and 15 °C.…”

Section: Discussionmentioning

confidence: 97%

Thermal generalist behaviour of invasive Puccinia striiformis f. sp. tritici strains under current and future climate conditions

et al. 2018

View full text Add to dashboard Cite

Yellow rust is a devastating wheat disease. Since 2000, Puccinia striiformis f. sp. tritici strains PstS1 and PstS2 have become adapted to high temperatures and have spread worldwide. By 2011, Warrior strains had invaded both warm and cold areas of Europe. This study questioned whether thermal aptitude promoted the spread of Warrior strains, similar to PstS1/PstS2, by comparing infection efficiency (IE) at five temperatures and latent period (LP) under warm and cold regimes for Warrior isolates and pre‐2011 reference strains on two susceptible wheat varieties. The Warrior isolates showed a range of IE and LP responses to temperature that was intermediate between the northern reference isolates adapted to cold conditions and both the southern and invasive PstS2 isolates adapted to warm conditions. Warrior isolates had the highest IE under optimal temperatures of 10 and 15 °C, and displayed reduced infectivity under the warmest (20 °C) and coldest (5 °C) temperatures. Warrior strains acted as thermal generalists and the reference isolates acted as specialists. An IE thermal response was used to simulate the development of each isolate under future climate scenarios in a temperate and Mediterranean region. Isolates had the same ranking for yearly IE over the three 30‐year periods (1971–2000, 2021–2050, 2071–2100) and both locations, with a slight infection increase in the future. However, in the future IEs increased in earlier months. The thermal generalist profile of Warrior isolates for IE was confirmed, with an intermediate capacity to tolerate warming climate, whereas the southern isolates are better adapted to warm conditions, but do not have the virulences necessary to develop on current varieties.

show abstract

“…Interestingly, differences in aggressiveness among pathogen isolates have sometimes been reported to be greater under non‐optimal conditions: differences in the latent period among isolates were more effectively observed at suboptimal temperatures for pathogen development in P. triticina and P. striiformis f.sp. tritici (Eversmeyer et al , 1980; Johnson, 1980; Milus et al , 2006). This result suggests that differential responses in terms of aggressiveness may be less detectable under optimal environmental conditions (Eversmeyer et al , 1980; Johnson, 1980).…”

Section: Effects Of Environment On Expression Of Aggressiveness Compomentioning

confidence: 99%

“…tritici (Eversmeyer et al , 1980; Johnson, 1980; Milus et al , 2006). This result suggests that differential responses in terms of aggressiveness may be less detectable under optimal environmental conditions (Eversmeyer et al , 1980; Johnson, 1980).…”

Section: Effects Of Environment On Expression Of Aggressiveness Compomentioning

confidence: 99%

“…Spore production of biotrophic parasites was also reported to increase when host photosynthesis was stimulated (Cohen & Rotem, 1970). Moreover, the response to infection may depend on host growth stage (Eversmeyer et al , 1980; Johnson, 1980; Milus & Line, 1980; Tomerlin et al , 1983) or on the type or age of host tissues (Turechek & Stevenson, 1998). Changes in the quantitative expression of disease with host development stage were reviewed by Develey‐Rivière & Galiana (2007) and probably largely relate to differences in the expression of resistance factors.…”

Section: Effects Of Environment On Expression Of Aggressiveness Compomentioning

confidence: 99%

See 1 more Smart Citation

Aggressiveness and its role in the adaptation of plant pathogens

Pariaud¹,

Ravigné²,

Halkett³

et al. 2009

Plant Pathology

268

272

View full text Add to dashboard Cite

Aggressiveness, the quantitative component of pathogenicity, and its role in the adaptation of plant pathogens are still insufficiently investigated. Using mainly examples of biotrophic and necrotrophic fungal pathogens of cereals and Phytophthora infestans on potato, the empirical knowledge on the nature of aggressiveness components and their evolution in response to host and environment is reviewed. Means of measuring aggressiveness components are considered, as well as the sources of environmental variance in these traits. The adaptive potential of aggressiveness components is evaluated by reviewing evidence for their heritability, as well as for constraints on their evolution, including differential interactions between host and pathogen genotypes and trade-offs between components of pathogenicity. Adaptations of pathogen aggressiveness components to host and environment are analysed, showing that: (i) selection for aggressiveness in pathogen populations can be mediated by climatic parameters; (ii) global population changes or remarkable population structures may be explained by variation in aggressiveness; and (iii) selection for quantitative traits can influence pathogen evolution in agricultural pathosystems and can result in differential adaptation to host cultivars, sometimes leading to erosion of quantitative resistance. Possible links with concepts in evolutionary ecology are suggested.

show abstract

Effect of Temperature and Host:Parasite Combination on the Latent Period ofPuccinia reconditain Seedling Wheat Plants

Cited by 37 publications

References 0 publications

Effects of temperature on the latent period of the rose powdery mildew pathogen, Sphaerotheca pannosa

Effects of temperature on the latent period of the rose powdery mildew pathogen, Sphaerotheca pannosa

Thermal generalist behaviour of invasive Puccinia striiformis f. sp. tritici strains under current and future climate conditions

Aggressiveness and its role in the adaptation of plant pathogens

Contact Info

Product

Resources

About