New insights into the parametrization of temperature and light responses of mono - and sesquiterpene emissions from Aleppo pine and rosemary

Staudt, Michael; Bourgeois, Ilann; Halabi, Rachid Al; Song, Weihua; Williams, Jonathan

doi:10.1016/j.atmosenv.2016.12.033

Cited by 30 publications

(21 citation statements)

References 55 publications

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“… Lluisà and Peñuelas (1998) suggested that plants under mild to moderate drought stress accumulate carbon which is then often allocated to defense compounds such as terpenoids, when growth is restricted by water limitation. The emission of stored terpenoids is mostly temperature dependent ( Lluisà and Peñuelas, 1998 ; Staudt et al, 2017 ), because the volatility of these compounds increases at higher air temperatures ( Lerdau et al, 1997 ; Peñuelas and Lluisà, 2001 ), which is supported here by the significant correlation with diurnal temperature variations ( Figure 4D ). Nevertheless, with prolonged drought conditions terpenoid fluxes declined, which was clearly visible in the seasonal patterns of standard emission factors and in line with declining Ψ PD and carbon assimilation, indicating an increase of shrub and tree drought stress over time ( Grassi and Magnani, 2005 ).…”

Section: Discussionsupporting

confidence: 64%

“…With increasing drought stress, assimilation rates were stronger reduced compared to those of Q. suber as a result of the opportunistic, water-spending strategy of C. ladanifer. Compound concentrations in storage pools possibly got depleted by high air temperatures and cumulative drought stress over time and were not refilled to the same level ( Lluisà et al, 2006 ; Staudt et al, 2017 ), as evident from SQT emissions which are known to be stored in leaves of Cistus spp. ( Lluisà and Peñuelas, 2000 ; Ormeno et al, 2007 ).…”

Section: Discussionmentioning

confidence: 99%

“…( Lluisà and Peñuelas, 2000 ; Ormeno et al, 2007 ). There is also substantial evidence, that terpenoid storing species may release terpenoids from de novo biosynthesis dependent on substrate availability from photosynthesis ( Lluisà et al, 2010 ; Staudt et al, 2017 ), which decreased strongly in C. ladanifer over time. Since the diurnal temperature dependence, as well as the decrease of MT emissions with drought was lower compared to SQT, it seems likely that a substantial amount of MTs originated from de novo biosynthesis, as recently suggested by Yáñez-Serrano et al (2018) .…”

Section: Discussionmentioning

confidence: 99%

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Terpenoid Emissions of Two Mediterranean Woody Species in Response to Drought Stress

et al. 2018

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Drought is a major environmental constrain affecting plant performance and survival, particularly in Mediterranean ecosystems. Terpenoids may play a protective role under these conditions, however, observations of drought effects on plant terpenoid emissions are controversial ranging from decreased emissions to unaffected or increased release of terpenoids. In the present study we investigated terpenoid emissions of cork oak (Quercus suber) and gum rockrose (Cistus ladanifer) in response to summer drought stress in 2017. Pre-dawn leaf water potential (ΨPD) decreased from -0.64 to -1.72 MPa in Q. suber and from -1.69 to -4.05 MPa in C. ladanifer, indicating a transition from mild to severe drought along summer. Total terpenoid emissions decreased with drought, but differed significantly between species (p < 0.001) and in response to ΨPD, air temperature and assimilation rates. C. ladanifer emitted a large variety of >75 compounds comprising monoterpenes, sesquiterpenes and even diterpenes, which strongly decreased from 1.37 ± 0.23 μg g-1h-1 to 0.40 ± 0.08 μg g-1h-1 (p < 0.001) in response to drought. Total emission rates were positively correlated to air temperature (p < 0.001). C. ladanifer behavior points toward terpenoid leaf storage depletion and reduced substrate availability for terpenoid synthesis with increasing drought, most likely accelerated by high air temperatures. Q. suber emitted mainly monoterpenes and emissions declined significantly from June (0.50 ± 0.08 μg g-1h-1) to August (0.29 ± 0.02 μg g-1h-1) (p < 0.01). Emission rates were weakly correlated with net assimilation rates (R2 = 0.19, p < 0.001), but did not respond strongly to ΨPD and air temperature. Early onset of drought in 2017 most likely reduced plant metabolism in Q. suber, resulting in diminished, but stable terpenoid fluxes. Calculation of standard emission factors (at 30°C) revealed contrasting emission patterns of decreasing, unaffected, or increasing fluxes of single terpenoid compounds. Unaffected or drought-enhanced emissions of compounds such as α-pinene, camphene or manoyl oxide may point toward a specific role of these terpenoids in abiotic stress adaptation. In conclusion, these results suggest a strong negative, but species- and compound-specific effect of severe drought on terpenoid fluxes in Mediterranean ecosystems.

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Section: Discussionsupporting

confidence: 64%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Terpenoid Emissions of Two Mediterranean Woody Species in Response to Drought Stress

et al. 2018

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“…The VOC contents were measured following the method that was described in [66]. Briefly, representative leaflets or root sections of each plant were carefully detached with a pair of scissors and plunged in 10 mL of dichloromethane after weighing the fresh sample on a microbalance (average fresh weights of leaves and roots were around 350 and 900 mg, respectively).…”

Section: Solvent Extraction Of Vocs Stored In Leaves and Rootsmentioning

confidence: 99%

Insights into the Intraspecific Variability of the above and Belowground Emissions of Volatile Organic Compounds in Tomato

et al. 2021

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The in-vivo monitoring of volatile organic compound (VOC) emissions is a potential non-invasive tool in plant protection, especially in greenhouse cultivation. We studied VOC production from above and belowground organs of the eight parents of the Multi-Parent Advanced Generation Intercross population (MAGIC) tomato population, which exhibits a high genetic variability, in order to obtain more insight into the variability of constitutive VOC emissions from tomato plants under stress-free conditions. Foliage emissions were composed of terpenes, the majority of which were also stored in the leaves. Foliage emissions were very low, partly light-dependent, and differed significantly among genotypes, both in quantity and quality. Soil with roots emitted VOCs at similar, though more variable, rates than foliage. Soil emissions were characterized by terpenes, oxygenated alkanes, and alkenes and phenolic compounds, only a few of which were found in root extracts at low concentrations. Correlation analyses revealed that several VOCs emitted from foliage or soil are jointly regulated and that above and belowground sources are partially interconnected. With respect to VOC monitoring in tomato crops, our results underline that genetic variability, light-dependent de-novo synthesis, and belowground sources are factors to be considered for successful use in crop monitoring.

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“…Boix et al [35] indicated that these essential oils are found in peltate hairs and, as can be observed by gas chromatography-mass spectrometry analysis (GC-MS), are mostly monoterpenic in nature. Meanwhile, Staudta et al [36] argued that the synthesis of isoprene derivatives increases with temperatures up to 40 • C and must be released because they do not accumulate in the plant. These explanations help to understand the reason why the Labiatae family, and rosemary in particular, produce a large quantity of phytochemicals [37], which are highly valued in cosmetics [38].…”

Section: Ecology Of Rosemary and Other Labiates In Mediterranean Forestsmentioning

confidence: 99%

Rosmarinus officinalis L. (Rosemary): An Ancient Plant with Uses in Personal Healthcare and Cosmetics

2020

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This work is a bibliographical review of rosemary (Rosmarinus officinalis) that focuses on the application of derivatives of this plant for cosmetic products, an application which has been recognized and valued since Ancient Egyptian times. Rosemary is a plant of Mediterranean origin that has been distributed throughout different areas of the world. It has many medicinal properties, and its extracts have been used (mainly orally) in folk medicine. It belongs to the Labiatae family, which contains several genera—such as Salvia, Lavandula, and Thymus—that are commonly used in cosmetics, due to their high prevalence of antioxidant molecules. Rosemary is a perennial shrub that grows in the wild or is cultivated. It has glandular hairs that emit fragrant volatile essential oils (mainly monoterpenes) in response to drought conditions in the Mediterranean climate. It also contains diterpenes such as carnosic acid and other polyphenolic molecules. Herein, the botanical and ecological characteristics of the plant are discussed, as well as the main bioactive compounds found in its volatile essential oil and in leaf extracts. Afterward, we review the applications of rosemary in cosmetics, considering its preservative power, the kinds of products in which it is used, and its toxicological safety, as well as its current uses or future applications in topical preparations, according to recent and ongoing studies.

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New insights into the parametrization of temperature and light responses of mono - and sesquiterpene emissions from Aleppo pine and rosemary

Cited by 30 publications

References 55 publications

Terpenoid Emissions of Two Mediterranean Woody Species in Response to Drought Stress

Terpenoid Emissions of Two Mediterranean Woody Species in Response to Drought Stress

Insights into the Intraspecific Variability of the above and Belowground Emissions of Volatile Organic Compounds in Tomato

Rosmarinus officinalis L. (Rosemary): An Ancient Plant with Uses in Personal Healthcare and Cosmetics

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