Signalling molecules responsive to ozone-induced oxidative stress in Salvia officinalis

Marchica, Alessandra; Lorenzini, Giacomo; Papini, Romina; Bernardi, Rodolfo; Nali, Cristina; Pellegrini, Elisa

doi:10.1016/j.scitotenv.2018.11.472

Cited by 33 publications

(26 citation statements)

References 72 publications

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“…By a phytotoxicologic point of view, the analyses of spectral signatures suggested that O 3 induced some physiological changes in sage leaves during the exposure (from 1 to 5 h FBE), but plants quickly recovered after the fumigation, confirming the tolerance of this species to the pollutant [36,37]. These responses were confirmed by variations of the investigated vegetation indices and leaf traits derived from spectra (again, only traits from best performing PLSR-models were used), further highlighting the potential of reflectance spectroscopy in monitoring the responses of plants to O 3 .…”

Section: Discussionmentioning

confidence: 99%

“…This is a species with good level of tolerance against salinity [34] and drought [35]. Recent studies have also demonstrated that sage is able to activate biochemical compounds, including phytohormones, signaling molecules, and antioxidants, in order to overcome O 3 -induced oxidative pressure, and for that it can be considered as O 3 tolerant [36,37].…”

Section: Introductionmentioning

confidence: 99%

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Early Detection of Sage (Salvia officinalis L.) Responses to Ozone Using Reflectance Spectroscopy

Marchica

Loré

Cotrozzi

et al. 2019

Plants

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Advancements in techniques to rapidly and non-destructively detect the impact of tropospheric ozone (O3) on crops are required. This study demonstrates the capability of full-range (350–2500 nm) reflectance spectroscopy to characterize responses of asymptomatic sage leaves under an acute O3 exposure (200 ppb for 5 h). Using partial least squares regression, spectral models were developed for the estimation of several traits related to photosynthesis, the oxidative pressure induced by O3, and the antioxidant mechanisms adopted by plants to cope with the pollutant. Physiological traits were well predicted by spectroscopic models (average model goodness-of-fit for validation (R2): 0.65–0.90), whereas lower prediction performances were found for biochemical traits (R2: 0.42–0.71). Furthermore, even in the absence of visible symptoms, comparing the full-range spectral profiles, it was possible to distinguish with accuracy plants exposed to charcoal-filtered air from those exposed to O3. An O3 effect on sage spectra was detectable from 1 to 5 h from the beginning of the exposure, but ozonated plants quickly recovered after the fumigation. This O3-tolerance was confirmed by trends of vegetation indices and leaf traits derived from spectra, further highlighting the capability of reflectance spectroscopy to early detect the responses of crops to O3.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Early Detection of Sage (Salvia officinalis L.) Responses to Ozone Using Reflectance Spectroscopy

Marchica

Loré

Cotrozzi

et al. 2019

Plants

View full text Add to dashboard Cite

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“…In rice, overexpressing OsWRKY89, a group III TF, through direct or indirect activation of SA mediated signal transduction pathway, not only intensified the plants resistance against UV irradiation but also imparted tolerance counter to insect pests and fungal infection [44]. Oxidative stress mediated through jasmonate (JA) signaling pathway is among one of the most detrimental stresses [45], while production and prompt scavenging of ROS are responsible for regulation of ROS-mediated signaling in plants [46]. Overexpression of WRKY4, WRKY5, WRKY11 and WRKY46 were observed during the exposure of oxidative stress in Salvia officinalis and play a pivotal role in the signaling mechanism during plant responses [45].…”

Section: Function and Expression Pattern Of Wrkys Under Abiotic Stressesmentioning

confidence: 99%

“…Oxidative stress mediated through jasmonate (JA) signaling pathway is among one of the most detrimental stresses [45], while production and prompt scavenging of ROS are responsible for regulation of ROS-mediated signaling in plants [46]. Overexpression of WRKY4, WRKY5, WRKY11 and WRKY46 were observed during the exposure of oxidative stress in Salvia officinalis and play a pivotal role in the signaling mechanism during plant responses [45].…”

Section: Function and Expression Pattern Of Wrkys Under Abiotic Stressesmentioning

confidence: 99%

Transcription Factors in Plant Stress Responses: Challenges and Potential for Sugarcane Improvement

Javed

Shabbir

Ali

et al. 2020

Plants

172

107

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Increasing vulnerability of crops to a wide range of abiotic and biotic stresses can have a marked influence on the growth and yield of major crops, especially sugarcane (Saccharum spp.). In response to various stresses, plants have evolved a variety of complex defense systems of signal perception and transduction networks. Transcription factors (TFs) that are activated by different pathways of signal transduction and can directly or indirectly combine with cis-acting elements to modulate the transcription efficiency of target genes, which play key regulators for crop genetic improvement. Over the past decade, significant progresses have been made in deciphering the role of plant TFs as key regulators of environmental responses in particular important cereal crops; however, a limited amount of studies have focused on sugarcane. This review summarizes the potential functions of major TF families, such as WRKY, NAC, MYB and AP2/ERF, in regulating gene expression in the response of plants to abiotic and biotic stresses, which provides important clues for the engineering of stress-tolerant cultivars in sugarcane.

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“…The accumulation of 13-HOTE, generated through the oxidation of linolenic acid by a lipoxygenase, and the corresponding accumulation of linolenic acid indicate that the oxylipin pathway was activated. This pathway notably leads to the synthesis of jasmonic acid, a well-known phytohormone involved in plant responses to biotic and abiotic stresses [53,54]. The decrease in glycerolipids, namely diacylglycerols and monogalactosyldiacylglycerols, may be the consequence of the activation of phospholipases or may illustrate the degradation of plastids that are rich in glycerolipids.…”

Section: Discussionmentioning

confidence: 99%

Untargeted Metabolomics Approach Reveals Diverse Responses of Pastinaca Sativa to Ozone and Wounding Stresses

et al. 2019

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Stresses such as wounding or atmospheric pollutant exposure have a significant impact on plant fitness. Since it has been widely described that the metabolome directly reflects plant physiological status, a way to assess this impact is to perform a global metabolomic analysis. In this study, we investigated the effect of two abiotic stresses (mechanical wounding and ozone exposure) on parsnip metabolic balance using a liquid chromatography-mass spectrometry-based untargeted metabolomic approach. For this purpose, parsnip leaves were submitted to an acute ozone exposure or were mechanically wounded and sampled 24, 48, and 72 h post-treatment. Multivariate and univariate statistical analyses highlighted numerous differentially-accumulated metabolic features as a function of time and treatment. Mechanical wounding led to a more differentiated response than ozone exposure. We found that the levels of coumarins and fatty acyls increased in wounded leaves, while flavonoid concentration decreased in the same conditions. These results provide an overview of metabolic destabilization through differentially-accumulated compounds and provide a better understanding of global plant metabolic changes in defense mechanisms.

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Signalling molecules responsive to ozone-induced oxidative stress in Salvia officinalis

Cited by 33 publications

References 72 publications

Early Detection of Sage (Salvia officinalis L.) Responses to Ozone Using Reflectance Spectroscopy

Early Detection of Sage (Salvia officinalis L.) Responses to Ozone Using Reflectance Spectroscopy

Transcription Factors in Plant Stress Responses: Challenges and Potential for Sugarcane Improvement

Untargeted Metabolomics Approach Reveals Diverse Responses of Pastinaca Sativa to Ozone and Wounding Stresses

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