How sensitive is Melissa officinalis to realistic ozone concentrations?

Döring, Anne Sarah; Pellegrini, Elisa; Campanella, Alessandra; Trivellini, Alice; Gennai, Clizia; Petersen, Maike; Nali, Cristina; Lorenzini, Giacomo

doi:10.1016/j.plaphy.2013.11.006

Cited by 31 publications

(25 citation statements)

References 41 publications

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“…ABA content was enhanced in O 3 -fumigated Melissa officinalis plants (200 ppb, 5 h) preceding the secondary ROS production peak (Pellegrini et al 2013). However, in some species, O 3 has no effect on its endogenous content (Döring et al 2014). Jiang and Zhang (2002) documented a significant increase in ABA levels which preceded that of ROS in leaves of detached maize plants exposed to water stress.…”

Section: Abscisic Acid (Aba)mentioning

confidence: 97%

Involvement of Phytohormones in Plant Responses to Ozone

Pellegrini

Trivellini

Cotrozzi

et al. 2016

Plant Hormones Under Challenging Environmental Factors

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Among various contaminants, ozone (O 3 ) is considered the most ubiquitous and phytotoxic atmospheric pollutant in industrialized and developing countries. It causes extensive risks for plant life, in terms of survival and productivity of wild and cultivated species. Plant response to O 3 resembles the biotic defense reactions and includes two steps: the first is a biphasic oxidative burst with a massive, rapid, and transient increase in apoplastic reactive oxygen species (ROS) production; the second is the induction of the hypersensitive response (HR) and systemic acquired resistance (SAR). In particular, the acute O 3 exposure (high concentrations for a few hours) results in the activation of programmed cell death (PCD) response that interacts with the synthesis of several hormones and other signaling molecules. The cross talk among all these molecules and their complex and interconnected signaling pathways are more important to determine (1) the initiation, propagation, and containment of O 3 -induced cell death, (2) the degree of the sensitivity of plants to this contaminant, and (3) the regulatory potential that plants have to promptly respond to oxidative stress. The present chapter reviews the role of phytohormones (such as ethylene, abscisic acid, gibberellins, auxins, and cytokinins) and other signaling molecules (such as salicylic and jasmonic acids, proline, and brassinosteroids), as well as their synergistic and antagonistic effects, in the complex signaling pathway involved in plant responses to O 3 stress.

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Section: Abscisic Acid (Aba)mentioning

confidence: 97%

Involvement of Phytohormones in Plant Responses to Ozone

Pellegrini

Trivellini

Cotrozzi

et al. 2016

Plant Hormones Under Challenging Environmental Factors

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“…The amount of α-tocopherol and ß-carotene was determined by HPLC according to Döring et al (2014). Thirty mg of leaves were homogenized in 3 mL of 100% HPLC-grade methanol and incubated overnight at 4 °C in the dark.…”

Section: Tocopherol and -Carotene Determinationmentioning

confidence: 99%

Salt-tolerant rootstock increases yield of pepper under salinity through maintenance of photosynthetic performance and sinks strength

Penella

Landi

Guidi

et al. 2016

Journal of Plant Physiology

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The performance of a salt-tolerant pepper (Capsicum annuum L.) accession (A25) utilized as a rootstock was assessed in two experiments. In a first field experiment under natural salinity conditions, we observed a larger amount of marketable fruit (+75%) and lower Blossom end Root incidence (-31%) plants, which had a constitutive enhanced root apparatus and 2.6-fold higher proline content under salinity, did not show alterations in photosynthesis and growth and MDA levels increased only slightly. Our results underline that salt tolerance in A/A25 grafted plants could be mediate by (I) the maintenance of root sink strength and (II) the markedly increased proline levels that could balance cell osmotic pressure thus protecting enzymatic stability from salttriggered damage.

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“…Photosynthetic and accessory pigments were determined by HPLC according to Döring et al [29], with some minor modifications as reported here. Fifty milligrams of lyophilized leaves were homogenized in 1 mL of 100% HPLC-grade methanol and incubated overnight at 4 • C in the dark.…”

Section: Biochemical Analysesmentioning

confidence: 99%

Cross-Talk between Physiological and Metabolic Adjustments Adopted by Quercus cerris to Mitigate the Effects of Severe Drought and Realistic Future Ozone Concentrations

Cotrozzi

Remorini

Pellegrini

et al. 2017

Forests

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Global climate change represents a moving target for plant acclimation and/or adaptation, especially in the Mediterranean basin. In this study, the interactions of severe drought (20% of the effective daily evapotranspiration) and O 3 fumigation (80 ppb, 5 h day −1 , for 28 consecutive days) on (i) photosynthetic performance, (ii) cell membrane stability, (iii) hydric relations, (iv) accumulation of compatible solutes, and (v) lipophilic antioxidant compounds were investigated in young Quercus cerris plants. In addition to the typical drought-induced stomatal closure, imposition of water withholding dramatically influenced the profile of stress-associated metabolites, i.e., abscisic acid (ABA), proline, and lipophilic antioxidants. However, plants were not able to delay or prevent the negative effects of water deficit, the greatest impacting factor in this study. This translated into a steep decline of photosynthetic efficiency, leaf hydration, and membrane fluidity and permeability. When water stress was coupled with O 3 , plants orchestrated cross-talk among ABA, proline, and sugar in fully-expanded mature leaves, partially leading to a premature senescence.

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How sensitive is Melissa officinalis to realistic ozone concentrations?

Cited by 31 publications

References 41 publications

Involvement of Phytohormones in Plant Responses to Ozone

Involvement of Phytohormones in Plant Responses to Ozone

Salt-tolerant rootstock increases yield of pepper under salinity through maintenance of photosynthetic performance and sinks strength

Cross-Talk between Physiological and Metabolic Adjustments Adopted by Quercus cerris to Mitigate the Effects of Severe Drought and Realistic Future Ozone Concentrations

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