Impact of Drought Stress on the Expression of Resistance to<i>Verticillium albo-atrum</i>in Alfalfa

Pennypacker, B. W.; Leath, K. T.; Hill, R. R.

doi:10.1094/phyto-81-1014

Cited by 32 publications

(21 citation statements)

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“…But plant pathologists have studied the interactions between pathogen and drought stress at the scale of pathogen populations for some time. For example, Pennypacker et al (111) found that alfalfa plants inoculated with Verticillium albo-atrum exhibited fewer symptoms under drought stress. For some hostpathogen systems, however, resistance is apparently reduced under drought conditions (34).…”

Section: Host Resistancementioning

confidence: 99%

Climate Change Effects on Plant Disease: Genomes to Ecosystems

Garrett

Dendy

Frank

et al. 2006

Annu. Rev. Phytopathol.

815

536

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Research in the effects of climate change on plant disease continues to be limited, but some striking progress has been made. At the genomic level, advances in technologies for the high-throughput analysis of gene expression have made it possible to begin discriminating responses to different biotic and abiotic stressors and potential trade-offs in responses. At the scale of the individual plant, enough experiments have been performed to begin synthesizing the effects of climate variables on infection rates, though pathosystemspecific characteristics make synthesis challenging. Models of plant disease have now been developed to incorporate more sophisticated climate predictions. At the population level, the adaptive potential of plant and pathogen populations may prove to be one of the most important predictors of the magnitude of climate change effects. Ecosystem ecologists are now addressing the role of plant disease in ecosystem processes and the challenge of scaling up from individual infection probabilities to epidemics and broader impacts.

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Section: Host Resistancementioning

confidence: 99%

Climate Change Effects on Plant Disease: Genomes to Ecosystems

Garrett

Dendy

Frank

et al. 2006

Annu. Rev. Phytopathol.

815

536

View full text Add to dashboard Cite

show abstract

“…Similarly, efforts to identify the effects of water stress on plant resistance to infection are complicated by the fact that several foliar pathogens have lower infection rates under conditions of low RH (Huber and Gillespie 1992). In some pathosystems, plants exhibit fewer symptoms when they are subjected to drought stress (Pennypacker et al 1991). However, in some others, plants are more susceptible under drought conditions (Schoeneweiss 1975), above and beyond any additive effect of drought and disease stress.…”

Section: Effects Of Climate Change On Host Plants and On Plant-pathogmentioning

confidence: 99%

Climate Change Impacts on Plant Pathogens and Plant Diseases

Elad

Pertot

2014

Journal of Crop Improvement

294

147

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The effects of climate change on plant pathogens and the diseases they cause have been examined in some pathosystems. Predicted climatic changes are expected to affect pathogen development and survival rates and modify host susceptibility, resulting in changes in the impact of diseases on crops. The effects of these climatic changes will differ by pathosystem and geographical region. These changes may affect not only the optimal conditions for infection but also host specificity and mechanisms of plant infection. We describe research on the effects of changes in temperature, CO 2 and ozone concentrations, precipitation, and drought on the biology of pathogens and their ability to infect plants and survive in natural and agricultural environments. Changing abiotic conditions will also affect the microclimate surrounding plants and the susceptibility of plants to infection. These changing conditions are expected to affect microbial communities in the soil and canopy pathosystems, possibly altering the currently observed beneficial effects of these communities. Because both pathogens and host plants will be affected by the changing climate, dramatic changes in the magnitude of disease expression in a given pathosystem, the geographical distribution of particular plant diseases, the economic importance of particular diseases in a given location, and the set of Downloaded by [UOV University of Oviedo] at 01:55 21 November 2014 100 Y. Elad and I. Pertotdiseases that challenge each crop are expected. These changes will affect the measures farmers use to effectively manage disease, as well as the feasibility of particular cropping systems in particular regions.

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“…Debilitated crops under drought stress can have reduced impact or symptoms from pest or pathogen attack because they have reduced trophic value (Pennypacker et al 1991;Huber and Gillespie 1992). However, resistance expression can also be changed and in particular reduced (Christiansen and Lewis 1982).…”

Section: Water Other Effects and Extremesmentioning

confidence: 99%

Implications of climate change for diseases, crop yields and food security

Newton¹,

Johnson²,

Gregory³

2011

Euphytica

225

116

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Accelerated climate change affects components of complex biological interactions differentially, often causing changes that are difficult to predict. Crop yield and quality are affected by climate change directly, and indirectly, through diseases that themselves will change but remain important. These effects are difficult to dissect and model as their mechanistic bases are generally poorly understood. A combination of integrated modelling from different disciplines and multi-factorial experimentation is needed to advance our understanding and prioritisation of the challenges. This will help prioritise breeding objectives. Food security brings in additional socio-economic, geographical and political factors. Enhancing resilience to the effects of climate change is important for all these systems and functional diversity, particularly in tolerance traits for abiotic and biotic stress, is one of the most effective targets for improved sustainability.

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Impact of Drought Stress on the Expression of Resistance toVerticillium albo-atrumin Alfalfa

Cited by 32 publications

References 0 publications

Climate Change Effects on Plant Disease: Genomes to Ecosystems

Climate Change Effects on Plant Disease: Genomes to Ecosystems

Climate Change Impacts on Plant Pathogens and Plant Diseases

Implications of climate change for diseases, crop yields and food security

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