Season-long exposure of bilberry plants to realistic and future ozone pollution improves the nutraceutical quality of fruits

Hoshika, Yasutomo; Cotrozzi, Lorenzo; Marchica, Alessandra; Carrari, Elisa; Lorenzini, Giacomo; Nali, Cristina; Paoletti, Elena; Pellegrini, Elisa

doi:10.1016/j.scitotenv.2022.153577

Cited by 10 publications

(1 citation statement)

References 79 publications

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“…A relatively high sensitivity of V. myrtillus in terms of O 3 VFI was also confirmed in the FACE. A long-term exposure to high concentrations of O 3 also resulted in an alteration of the yield and nutraceutical quality of fruits, suggesting that Vaccinium myrtillus is sensitive to O 3 [48]. In addition to the above-mentioned species, according to the FACE experiments, Sorbus aucuparia and poplar species were considered to be O 3 -sensitive, as they showed a high PII due to a high stomatal O 3 uptake.…”

Section: Different Sensitivity To O 3 Among Species According To Visi...mentioning

confidence: 99%

Exploring a New O3 Index as a Proxy for the Avoidance/Tolerance Capacity of Forest Species to Tolerate O3 Injury

Manzini

Hoshika

Moura

et al. 2023

Forests

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Tropospheric ozone (O3) is a detrimental air pollutant causing phytotoxic effects. Several O3 indices are used to assess the risk for vegetation, e.g., the exposure-based AOT40 (accumulated ozone exposure over a threshold of 40 ppb) and the stomatal-flux based POD1 (Phytotoxic Ozone Dose above a threshold of 1 nmol m−2 s−1). Leaf Mass per Area (LMA) is recommended as a simple index to explain the plant tolerance capacity to O3. We therefore tested a new species-specific O3 index (Leaf Index Flux—LIF: calculated as stomatal O3 flux/LMA) as a proxy of the avoidance/tolerance capacity against O3 stress according to datasets of visible foliar injury (VFI) in forest monitoring and a manipulative Free-Air Controlled Exposure (FACE) experiment. For the forest monitoring, AOT40, POD1, and LIF were calculated from hourly O3, soil moisture, and meteorological measurements at nine Italian forest sites over the period 2018–2022. The results were tested for correlation with the O3 VFI annually surveyed at the same sites along the forest edge (LESS) or inside the forest (ITP) and expressed as relative frequency of symptomatic species in the LESS (SS_LESS) and Plant Injury Index per tree in the plot (PII_ITP). Based on VFI occurrence at ITP and LESS, Fagus sylvatica was considered the most O3-sensitive species, whereas conifers (Pinus pinea and Picea abies) and other deciduous/evergreen broadleaf (Quercus petraea, Q. cerris, Q. ilex, and Phyllirea latifolia) showed rare and no O3 VFI. Shrub species such as Rubus spp. and Vaccinium myrtillus were O3-sensitive, as they showed VFI along the LESS. AOT40 did not show significant correlations with the VFI parameters, POD1 increased with increasing SS_LESS (p = 0.005, r = 0.37) and PII_ITP (p < 0.001, r = 0.53), and LIF showed an even higher correlation with SS%_LESS (p < 0.001, r = 0.63) and PII_ITP (p < 0.001, r = 0.87). In the FACE experiment, PII was investigated for five deciduous and three evergreen tree species following one growing season of exposure to ambient and above-ambient O3 levels (PII_FACE). Moreover, PII_FACE resulted better correlated with LIF (r = 0.67, p < 0.001) than with POD1 (r = 0.58, p = 0.003) and AOT40 (r = 0.35, p = 0.09). Therefore, LIF is recommended as a promising index for evaluating O3 VFI on forest woody species and stresses high O3 risk potential for forest species with high stomatal conductance and thin leaves.

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Section: Different Sensitivity To O 3 Among Species According To Visi...mentioning

confidence: 99%

Exploring a New O3 Index as a Proxy for the Avoidance/Tolerance Capacity of Forest Species to Tolerate O3 Injury

Manzini

Hoshika

Moura

et al. 2023

Forests

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The magpie and the grapes: increasing ozone exposure impacts fruit consumption by a common corvid in a suburban environment

Viviano,

Mori,

Manzini

et al. 2023

Pest Management Science

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BACKGROUNDThe Eurasian magpie Pica pica is a resident bird species able to colonize farmlands and anthropized environments. This corvid shows a wide trophic spectrum by including fruits, invertebrates, small vertebrates, and carcasses in its diet. A camera‐trap experiment has been carried out to test the effect of different ozone (O3) concentrations on potted Vitis vinifera plants, which result in different grape consumption rates by suburban birds. The test was performed at an Ozone‐Free Air Controlled Exposure (FACE) facility, consisting of nine plots with three O3 levels where AA is ambient O3 concentration and two elevated O3 levels (ambient air with a 50% increase in O3 concentration, 1.5x AA; and ambient air with a 100% increase in O3 concentration, 2.0x AA). Camera‐traps were located in front of each treatment area and kept active for 24 h/day and for 5‐day periods throughout a total of 3 months to monitor grape consumption by birds.RESULTSWe collected a total of 38 videos: Eurasian magpies were the only grape consumers, with a total of 6.7 ± 3.3 passages per hour (mean ± SD), with no differences across different O3 treatments. The grapes in the AA treatment were consumed significantly faster than those in the 1.5x AA treatment, which were, in turn, consumed faster than those in the 2.0x AA treatment. After 3 days from the start of treatment, 94, 53 and 22% berries from AA, 1.5x AA, and 2.0x AA treatments were eaten, respectively. When the O3 was turned off, berries were consumed at the same rate among treatments.CONCLUSIONIncreasing O3 concentrations limited grape consumption by the magpie likely because O3 acted as a deterrent for magpies, while the lower sugar content recorded in the 2.0x AA berries did not affect the consumption when O3 was turned off. Our results provided valuable insights to mitigate human‐wildlife conflicts in suburban environments.This article is protected by copyright. All rights reserved.

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Effect of elevated ozone on the antioxidant response, genomic stability, DNA methylation pattern and yield in three species of Abelmoschus having different ploidy levels

Singh

Ansari

Pandey

et al. 2023

Environ Sci Pollut Res

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Season-long exposure of bilberry plants to realistic and future ozone pollution improves the nutraceutical quality of fruits

Cited by 10 publications

References 79 publications

Exploring a New O3 Index as a Proxy for the Avoidance/Tolerance Capacity of Forest Species to Tolerate O3 Injury

Exploring a New O3 Index as a Proxy for the Avoidance/Tolerance Capacity of Forest Species to Tolerate O3 Injury

The magpie and the grapes: increasing ozone exposure impacts fruit consumption by a common corvid in a suburban environment

Effect of elevated ozone on the antioxidant response, genomic stability, DNA methylation pattern and yield in three species of Abelmoschus having different ploidy levels

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