The Role of Volatile Organic Compounds in Plant Resistance to Abiotic Stresses: Responses and Mechanisms

Possell, Malcolm; Loreto, Francesco

doi:10.1007/978-94-007-6606-8_8

Cited by 74 publications

(79 citation statements)

References 148 publications

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“…In World's cereal crops are exposed to O 3 concentrations that possess the potential of causing 22 yield reductions. In Europe, crop losses from O 3 damage for 23 crops in 47 countries were 23 estimated to be €6.7 billion per year ($9.6 billion) (Holland et al 2006). …”

Section: Introductionmentioning

confidence: 99%

“…Physiological pre-disposition or detoxification capacity is also not considered in impact 22 studies which caused Tausz et al (2007) to propose a flux-concept weighted by the defense 23 capacity of plants. 24 Despite some approaches that incorporate the water balance into O 3 uptake calculations …”

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confidence: 99%

“…We assume that particularly isotopic techniques and related methodologies 23 could greatly enhance our understanding of the phenomenon. We also strongly encourage 24 model developers to consider the respiratory costs of the defense actions explicitly and 25 introduce a two-way linkage between isoprenoid emission and photosynthetic activity.…”

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confidence: 99%

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Ozone damage, detoxification and the role of isoprenoids – new impetus for integrated models

Tiwari

Grote

Churkinа

et al. 2016

Functional Plant Biol.

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14High concentrations of ozone (O 3 ) can have large impacts on the health and productivity of 15 agricultural and forest ecosystems, leading to significant economic losses. In order to estimate This review summarizes these processes, discusses their importance for O 3 damage scenarios 21 and assesses to which degree this knowledge is currently used in ecosystem models which are 22 applied for impact analyses. We find that even in highly sophisticated models, feedbacks 23 affecting regulation, detoxification capacity, and vulnerability are generally not considered. 24This implies that O 3 inflicted alterations in carbon and water balances cannot be sufficiently 25 well described to cover immediate plant responses under changing environmental conditions. 26Therefore, we suggest conceptual models that link the depicted feedbacks to available 27 process-based descriptions of stomatal conductance, photosynthesis and isoprenoid formation.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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Ozone damage, detoxification and the role of isoprenoids – new impetus for integrated models

Tiwari

Grote

Churkinа

et al. 2016

Functional Plant Biol.

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“…However, although the overall intercompartmental exchange of isoprenoid substrates to pathway flux in the given compartment might seem minor under nonstressed conditions, the importance of cross talk among the pathways might increase under stress conditions that specifically inhibit isoprenoid synthesis in one pathway. In fact, the DXP/MEP pathway is strongly linked to photosynthetic metabolism, and therefore, inhibition of photosynthesis under stressful conditions such as heat stress or drought or photoinhibition could inhibit the synthesis of isoprenoids when they are most needed to fulfill their protective function (Loreto and Schnitzler, 2010;Niinemets, 2010;Possell and Loreto, 2013). There is some evidence demonstrating a certain cooperativity among the two isoprenoid synthesis pathways under conditions leading to a reduction of the activity of one of them (Piel et al, 1998;Jux et al, 2001;Page et al, 2004;Rodríguez-Concepción, 2006), but the capacity for such a replacement of function and regulation is poorly understood.…”

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confidence: 99%

Bisphosphonate Inhibitors Reveal a Large Elasticity of Plastidic Isoprenoid Synthesis Pathway in Isoprene-Emitting Hybrid Aspen

et al. 2015

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Recently, a feedback inhibition of the chloroplastic 1-deoxy-D-xylulose 5-phosphate (DXP)/2-C-methyl-D-erythritol 4-phosphate (MEP) pathway of isoprenoid synthesis by end products dimethylallyl diphosphate (DMADP) and isopentenyl diphosphate (IDP) was postulated, but the extent to which DMADP and IDP can build up is not known. We used bisphosphonate inhibitors, alendronate and zoledronate, that inhibit the consumption of DMADP and IDP by prenyltransferases to gain insight into the extent of end product accumulation and possible feedback inhibition in isoprene-emitting hybrid aspen (Populus tremula 3 Populus tremuloides). A kinetic method based on dark release of isoprene emission at the expense of substrate pools accumulated in light was used to estimate the in vivo pool sizes of DMADP and upstream metabolites. Feeding with fosmidomycin, an inhibitor of DXP reductoisomerase, alone or in combination with bisphosphonates was used to inhibit carbon input into DXP/MEP pathway or both input and output. We observed a major increase in pathway intermediates, 3-to 4-fold, upstream of DMADP in bisphosphonateinhibited leaves, but the DMADP pool was enhanced much less, 1.3-to 1.5-fold. In combined fosmidomycin/bisphosphonate treatment, pathway intermediates accumulated, reflecting cytosolic flux of intermediates that can be important under strong metabolic pull in physiological conditions. The data suggested that metabolites accumulated upstream of DMADP consist of phosphorylated intermediates and IDP. Slow conversion of the huge pools of intermediates to DMADP was limited by reductive energy supply. These data indicate that the DXP/MEP pathway is extremely elastic, and the presence of a significant pool of phosphorylated intermediates provides an important valve for fine tuning the pathway flux.

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“…Biotic factors such as bacterial or fungal pathogens, abiotic pollutants of soil and atmosphere, changes of temperature or humidity as well as solar exposure can cause disorders of cell metabolism called oxidative stress [1][2][3][4][5][6][7]. These factors disturb respiration processes, which results in generation of excess amounts of reactive oxygen species (ROS) in the form of singlet oxygen ( 1 O 2 ) and hydroxyl radical (OH • ) but mainly of superoxide radical (O 2…”

Section: Introductionmentioning

confidence: 99%

Changes in Antioxidant Enzyme Activities of European Mistletoe (Viscum album L. subsp. Album) Leaves as a Response to Environmental Stress Caused by Pollution of the Atmosphere by Nitrogen Dioxide

Patykowski¹,

Kołodziejek²

2016

Pol. J. Environ. Stud.

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In the present study we investigated the seasonal pattern of activity of antioxidant enzymes such as superoxide dismutase (SOD) catalase (CAT) ascorbate peroxidase (APX), guaiacol peroxidase (POD) and syringaldazine peroxidase (SPOD) as well as the total protein concentration in the European mistletoe (Viscum album L. subsp. album). We studied mistletoe leaves that grew on the selected tree species in different parts the city of Lodz, exposed to a greater or lesser extent to the nitrogen dioxide. Sampling campaigns were conducted during the growing season 2013 in early May (at the beginning of the growing season) and in November (at the end of the growing season). We showed considerable seasonal variations of antioxidant enzymatic activity and total protein concentrations for all the samples studied. The test parameters varied depending on the host plants exposition to pollution with nitrogen dioxide. The changes in enzymatic activity did not depend on the host plants. In mistletoe leaves greater changes of SOD activity and total protein concentration were observed in autumn. There is correlation between the level of nitrogen dioxide in atmosphere and activities the enzymes. SOD activity was signifi cantly higher in autumn when the host plants were defoliated. Increased CAT activity was observed in late spring. We demonstrated the positive correlation between changes in enzyme activities and the progress of growing season. Increased activities of POD, CAT and APX to a limited extent depended on the place of growing and exposition to air pollution. In late spring activity of the enzymes did not signifi cant grow because of the protective umbrella from host plant leaves preventing the access of nitrogen dioxide to mistletoe. The higher SOD activity in mistletoe is a consequence of oxidative stress causes by nitrogen dioxides evidently observed in the city center. The test parameters, mainly the activity of SOD, can be used in the future as markers of the

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The Role of Volatile Organic Compounds in Plant Resistance to Abiotic Stresses: Responses and Mechanisms

Cited by 74 publications

References 148 publications

Ozone damage, detoxification and the role of isoprenoids – new impetus for integrated models

Ozone damage, detoxification and the role of isoprenoids – new impetus for integrated models

Bisphosphonate Inhibitors Reveal a Large Elasticity of Plastidic Isoprenoid Synthesis Pathway in Isoprene-Emitting Hybrid Aspen

Changes in Antioxidant Enzyme Activities of European Mistletoe (Viscum album L. subsp. Album) Leaves as a Response to Environmental Stress Caused by Pollution of the Atmosphere by Nitrogen Dioxide

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