Foliage visible injury in the tropical tree species, Astronium graveolens is strictly related to phytotoxic ozone dose (PODy)

Fernandes, Francine Faia; Moura, Bárbara Baêsso

doi:10.1007/s11356-021-13682-3

Cited by 5 publications

(2 citation statements)

References 39 publications

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“…Furthermore, O 3 VFI increased with increasing POD 1 in the two deciduous oaks. This suggests that PODy is a key indicator to describe the development of O 3 VFI [ 33 ] once it is well known that O 3 damage is closely related to stomatal O 3 uptake [ 1 ]. In fact, the absence of O 3 VFI in Q. ilex might be related to its low g max (165 mmol O 3 m −2 s −1 , compared to 225 mmol O 3 m −2 s −1 and 200 mmol O 3 m −2 s −1 of Q. pubescens and Q. robur, respectively, [ 22 ] suggesting that the development of VFI might be discussed in terms of the specific-species patterns of stomatal conductance.…”

Section: Discussionmentioning

confidence: 99%

Visible Foliar Injury and Ecophysiological Responses to Ozone and Drought in Oak Seedlings

Moura

Paoletti

Badea

et al. 2022

Plants

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To verify the responses of visible foliar injury (VFI), we exposed seedlings of three oak species for 4.5 months in an open air facility, using differing ozone (O3) and drought treatments: O3 (three levels from ambient to ×1.4 ambient), and drought (three levels of irrigation from 40% to 100% field capacity). We related the accumulated phytotoxic O3 dose (POD1) and cumulative drought index (CDI) to the O3 and drought VFI and assessed growth increment (height, diameter, leaf number), biomass (of all organs), and physiological parameters: net photosynthesis per plant (Pn), photosynthetic nitrogen (PNUE) and phosphorus use efficiency (PPUE)). The results indicated that an increase in POD1 promoted O3 VFI in Quercus robur and Quercus pubescens, while Quercus ilex was asymptomatic. The POD1-based critical level at the onset of O3 VFI was lower for Q. robur than for Q. pubescens (12.2 vs. 15.6 mmol m−2 POD1). Interestingly, drought reduced O3 VFI in Q. robur but increased it in Q. pubescens. Both O3 and drought were detrimental to the plant biomass. However, Q. robur and Q. pubescens invested more in shoots than in roots, while Q. ilex invested more in roots, which might be related to a hormetic mechanism. Pn, PNUE and PPUE decreased in all species under drought, and only in the sensitive Q. robur (PPUE) and Q. pubescens (PNUE) under O3. This study confirms that POD1 is a good indicator to explain the development of O3 VFI and helps a differential diagnosis of co-occurring drought and O3 VFI in oak forests.

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Section: Discussionmentioning

confidence: 99%

Visible Foliar Injury and Ecophysiological Responses to Ozone and Drought in Oak Seedlings

Moura

Paoletti

Badea

et al. 2022

Plants

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“…and Astronium graveolens Jacq, representative species of Atlantic Forest remnants of São Paulo-southeast Brazil, are well investigated and have visual symptoms described in experimental and field conditions (Moura et al, 2014(Moura et al, , 2018. Physiological (Cassimiro et al, 2016;Fernandes and Moura, 2021) and biochemical responses (Domingos et al, 2015) are also well described and point to the use of these species for future biomonitoring of O 3 potential effects in tropical regions. These three plant species have shown different biochemical strategies for their defense responses.…”

Section: Introductionmentioning

confidence: 99%

Ozone Impact on Emission of Biogenic Volatile Organic Compounds in Three Tropical Tree Species From the Atlantic Forest Remnants in Southeast Brazil

et al. 2022

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Plants emit a broad number of Biogenic Volatile Organic Compounds (BVOCs) that can impact urban ozone (O3) production. Conversely, the O3 is a phytotoxic pollutant that causes unknown alterations in BVOC emissions from native plants. In this sense, here, we characterized the constitutive and O3-induced BVOCs for two (2dO3) and four (4dO3) days of exposure (O3 dose 80 ppb) and evaluated the O3 response by histochemical techniques to detect programmed cell death (PCD) and hydrogen peroxide (H2O2) in three Brazilian native species. Croton floribundus Spreng, Astronium graveolens Jacq, and Piptadenia gonoacantha (Mart.) JF Macbr, from different groups of ecological succession (acquisitive and conservative), different carbon-saving defense strategies, and specific BVOC emissions. The three species emitted a very diverse BVOC composition: monoterpenes (MON), sesquiterpenes (SEQ), green leaf volatiles (GLV), and other compounds (OTC). C. floribundus is more acquisitive than A. graveolens. Their most representative BVOCs were methyl salicylate—MeSA (OTC), (Z) 3-hexenal, and (E)-2-hexenal (GLV), γ-elemene and (−)-β-bourbonene (SEQ) β-phellandrene and D-limonene (MON), while in A. graveolens were nonanal and decanal (OTC), and α-pinene (MON). Piptadenia gonoachanta is more conservative, and the BVOC blend was limited to MeSA (OTC), (E)-2-hexenal (GLV), and β-Phellandrene (MON). The O3 affected BVOCs and histochemical traits of the three species in different ways. Croton floribundus was the most O3 tolerant species and considered as an SEQ emitter. It efficiently reacted to O3 stress after 2dO3, verified by a high alteration of BVOC emission, the emergence of the compounds such as α-Ionone and trans-ß-Ionone, and the absence of H2O2 detection. On the contrary, A. graveolens, a MON-emitter, was affected by 2dO3 and 4dO3, showing increasing emissions of α-pinene and β-myrcene, (MON), γ-muurolene and β-cadinene (SEQ) and H2O2 accumulation. Piptadenia gonoachanta was the most sensitive and did not respond to BVOCs emission, but PCD and H2O2 were highly evidenced. Our results indicate that the BVOC blend emission, combined with histochemical observations, is a powerful tool to confirm the species’ tolerance to O3. Furthermore, our findings suggest that BVOC emission is a trade-off associated with different resource strategies of species indicated by the changes in the quality and quantity of BVOC emission for each species.

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Sensitivity of agricultural crops to tropospheric ozone: a review of Indian researches

Gupta

Yadav²,

Agrawal

et al. 2022

Environ Monit Assess

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Foliage visible injury in the tropical tree species, Astronium graveolens is strictly related to phytotoxic ozone dose (PODy)

Cited by 5 publications

References 39 publications

Visible Foliar Injury and Ecophysiological Responses to Ozone and Drought in Oak Seedlings

Visible Foliar Injury and Ecophysiological Responses to Ozone and Drought in Oak Seedlings

Ozone Impact on Emission of Biogenic Volatile Organic Compounds in Three Tropical Tree Species From the Atlantic Forest Remnants in Southeast Brazil

Sensitivity of agricultural crops to tropospheric ozone: a review of Indian researches

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