Leaf rust induced volatile organic compounds signalling in willow during the infection

This review focuses on the detection of diseased plants by analysis of volatile organic compound (VOC) emissions. It includes an overview of studies that report on the impact of infectious and noninfectious diseases on these emissions and discusses the specificity of disease-induced emissions. The review also provides an overview of processes that affect the gas balance of plant volatiles, including their loss processes. These processes are considered as important because they contribute to the time-dynamic concentration profiles of plant-emitted volatiles. In addition, we describe the most popular techniques currently in use to measure volatiles emitted from plants, with emphasis on agricultural application. Dynamic sampling coupled with gas chromatography and followed by an appropriate detector is considered as the most appropriate method for application in agriculture. It is recommended to evaluate the state-of-the-art in the fields concerned with this method and to explore the development of a new instrument based on the specific needs for application in agricultural practice. However, to apply such an instrument in agriculture remains a challenge, mainly due to high costs.

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“…upon Melampsora epitea infection (86). Fungi-induced VOCs were also found in tomato (Lycopersicon esculentum) upon Erysiphe…”

Section: Emissions As a Results Of Infectious Plant Diseasesmentioning

confidence: 90%

Detection of Diseased Plants by Analysis of Volatile Organic Compound Emission

Jansen

Wildt

Kappers

et al. 2011

Annu. Rev. Phytopathol.

109

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“…Adsorbent cartridges were analyzed with a combined Shimadzu TD20 automated cartridge desorber and Shimadzu 2010 Plus GC-MS instrument (Shimadzu Corporation, Kyoto, Japan) described previously (Copolovici et al, 2009;Toome et al, 2010).…”

Section: Voc Analysismentioning

confidence: 99%

Seasonal variation in vertical volatile compounds air concentrations within a remote hemiboreal mixed forest

et al. 2012

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Abstract. The vertical distribution of ambient biogenic volatile organic compounds (BVOC) concentrations within a hemiboreal forest canopy was investigated over a period of one year. Variability in temporal and spatial isoprene concentrations, ranging from 0.1 to 7.5 µg m −3 , can be mainly explained by biogenic emissions from deciduous trees. Monoterpene concentrations exceeded isoprene largely and ranged from 0.01 to 140 µg m −3 and during winter time anthropogenic contributions are likely. Variation in monoterpene concentrations were found to be largest right above the ground and the vertical profiles suggest a weak mixing leading to terpene accumulation in the lower canopy. Exceptionally high values were recorded during a heat wave in July 2010 with very high midday temperatures above 30 • C for several weeks. During summer months, monoterpene exceeded isoprene concentrations 6-fold and during winter 12-fold. During summer months, dominance of α-pinene in the lower and of limonene in the upper part of the canopy was observed, both accounting for up to 70 % of the total monoterpene concentration. During wintertime, 3 -carene was the dominant species, accounting for 60 % of total monoterpene concentration in January. Possible biogenic monoterpene sources beside the foliage are the leaf litter, the soil and also resins exuding from stems. In comparison, the hemiboreal mixed forest canopy showed similar isoprene but higher monoterpene concentrations than the boreal forest and lower isoprene but substantially higher monoterpene concentrations than the temperate mixed forest canopies. These results have major implications for simulating air chemistry and secondary organic aerosol formation within and above hemiboreal forest canopies. Possible effects of in-cartridge oxidation reactions are discussed as our measurement technique did not include oxidant scavenging. A comparison between measurements with and without scavenging oxidants is presented.

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“…This is an important consideration because different VOCs, even within the same class of compounds, can vary by orders of magnitude in their chemical reactivity (Atkinson and Arey, 1998). A variety of stress exposure studies have been performed investigating BVOC emission changes due to ozone exposure (Heiden et al, 1999;Vuorinen et al, 2004), salt stress (Loreto and Delfine, 2000;Teuber et al, 2008), increased CO 2 (Calfapietra et al, 2009;Constable et al, 1999), enhanced radiation (Harley et al, 1996), drought and/or high temperatures (Kleist et al, 2012;Niinemets, 2010;Niinemets et al, 2010), herbivory (Achotegui-Castells et al, 2013;Copolovici et al, 2011;Engelberth et al, 2004), and pathogen attack (Jansen et al, 2009a;Toome et al, 2010). A thorough review on this topic was presented by Peñuelas and Staudt (2010).…”

Section: Introductionmentioning

confidence: 99%

Impacts of simulated herbivory on volatile organic compound emission profiles from coniferous plants

2015

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Abstract. The largest global source of volatile organic compounds (VOCs) in the atmosphere is from biogenic emissions. Plant stressors associated with a changing environment can alter both the quantity and composition of the compounds that are emitted. This study investigated the effects of one global change stressor, increased herbivory, on plant emissions from five different coniferous species: bristlecone pine (Pinus aristata), blue spruce (Picea pungens), western redcedar (Thuja plicata), grand fir (Abies grandis), and Douglas-fir (Pseudotsuga menziesii). Herbivory was simulated in the laboratory via exogenous application of methyl jasmonate (MeJA), a herbivory proxy. Gas-phase species were measured continuously with a gas chromatograph coupled to a mass spectrometer and flame ionization detector (GC-MS-FID). Stress responses varied between the different plant types and even between experiments using the same set of saplings. The compounds most frequently impacted by the stress treatment were alpha-pinene, beta-pinene, 1,8-cineol, beta-myrcene, terpinolene, limonene, and the cymene isomers. Individual compounds within a single experiment often exhibited a different response to the treatment from one another.

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Leaf rust induced volatile organic compounds signalling in willow during the infection

Cited by 91 publications

References 37 publications

Detection of Diseased Plants by Analysis of Volatile Organic Compound Emission

Detection of Diseased Plants by Analysis of Volatile Organic Compound Emission

Seasonal variation in vertical volatile compounds air concentrations within a remote hemiboreal mixed forest

Impacts of simulated herbivory on volatile organic compound emission profiles from coniferous plants

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