Responses of a tropical tree species to ozone: visible leaf injury, growth, and lipid peroxidation

Cassimiro, Jéssica C.; Moraes, Regina Maria de

doi:10.1007/s11356-015-5961-x

Cited by 9 publications

(4 citation statements)

References 28 publications

(25 reference statements)

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“…Comparisons between pre- and post-exposure to O 3 based on a GC/MS analysis, shows the dynamics of LCFA composition in elevated O 3 . Previously, the relationship was studied by evaluating malondialdehyde (MDA), an indicator of lipid peroxidation (Calatayud et al 2003 ; Cassimiro and Moraes 2016 ). However, the actual changes to compounds by O 3 have not, as yet, been well researched.…”

Section: New Explanations: Plant Volatiles Regulate Insect Grazingmentioning

confidence: 99%

Ozone disrupts the communication between plants and insects in urban and suburban areas: an updated insight on plant volatiles

et al. 2021

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Plant–insect interactions are basic components of biodiversity conservation. To attain the international Sustainable Development Goals (SDGs), the interactions in urban and in suburban systems should be better understood to maintain the health of green infrastructure. The role of ground-level ozone (O3) as an environmental stress disrupting interaction webs is presented. Ozone mixing ratios in suburbs are usually higher than in the center of cities and may reduce photosynthetic productivity at a relatively higher degree. Consequently, carbon-based defense capacities of plants may be suppressed by elevated O3 more in the suburbs. However, contrary to this expectation, grazing damages by leaf beetles have been severe in some urban centers in comparison with the suburbs. To explain differences in grazing damages between urban areas and suburbs, the disruption of atmospheric communication signals by elevated O3 via changes in plant-regulated biogenic volatile organic compounds and long-chain fatty acids are considered. The ecological roles of plant volatiles and the effects of O3 from both a chemical and a biological perspective are presented. Ozone-disrupted plant volatiles should be considered to explain herbivory phenomena in urban and suburban systems.

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Section: New Explanations: Plant Volatiles Regulate Insect Grazingmentioning

confidence: 99%

Ozone disrupts the communication between plants and insects in urban and suburban areas: an updated insight on plant volatiles

et al. 2021

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“…Both plant growth and production as well as plant species biodiversity are significantly disturbed under elevated O 3 conditions, which portends a significant threat to global food security (e.g. Schimidhuber & Tubiello 2007;Feng, Kobayashi, & Ainsworth 2008;Furlan et al 2008;Wittig, Ainsworth, Naidu, Karnosky, & Long 2009;Ainsworth, Yendrek, Sitch, Collins, & Emberson 2012;Wilkinson, Mills, Illidge, & Davies 2012;Agathokleous, Saitanis, & Koike 2015;Cassimiro & Moraes 2016;Freire et al 2017). It is estimated that the average current background concentration of O 3 in the northern hemisphere is around 20-50 nmol mol À1 and O 3 concentrations are predicted to increase due to expected rise in O 3 precursor emissions in the future, implying even greater effects of tropospheric O 3 on global climate change and on atmospheric oxidative status by the end of this century (Vingarzan 2004;Fowler et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Ozone‐induced foliar damage and release of stress volatiles is highly dependent on stomatal openness and priming by low‐level ozone exposure in Phaseolus vulgaris

Harley

Niinemets

2017

Plant Cell & Environment

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Acute ozone exposure triggers major emissions of volatile organic compounds (VOC), but quantitatively, it is unclear how different ozone doses alter the start and the total amount of these emissions, and the induction rate of different stress volatiles. It is also unclear whether priming (i.e., pre-exposure to lower O 3 concentrations) can modify the magnitude and kinetics of volatile emissions. We investigated photosynthetic characteristics and VOC emissions in Phaseolus vulgaris following acute ozone exposure (600 nmol mol -1 for 30 min) under illumination and in darkness and after priming with 200 nmol mol -1 O 3 for 30 min. Methanol and lipoxygenase (LOX) pathway product emissions were induced rapidly, followed by moderate emissions of methyl salicylate (MeSA). Stomatal conductance prior to acute exposure was lower in darkness and after low O 3 priming than in light and without priming. After low O 3 priming, no MeSA and lower LOX emissions were detected under acute exposure. Overall, maximum emission rates and the total amount of emitted LOX products and methanol were quantitatively correlated with total stomatal ozone uptake. These results indicate that different stress volatiles scale differently with ozone dose and highlight the key role of stomatal conductance in controlling ozone uptake, leaf injury and volatile release.

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“…It has significant concentrations of O 3 and low concentrations of other pollutants (Cassimiro et al 2016).…”

Section: Methodsmentioning

confidence: 99%

Meteorological conditions, ozone concentration and leaf age affect gas exchange in Psidium guajava ‛Palumaʼ

Pina

Meirelles

Moraes

2017

Hoehnea

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-(Meteorological conditions, ozone concentration, and leaf age affect gas exchange in Psidium guajava ‛Paluma'). This study aimed to investigate the importance of leaf age, meteorological conditions and ozone concentration (O 3 ) on gas exchange of Psidium guajava ‛Paluma'. Saplings were grown and exposed in standard conditions in the city of São Paulo, in six periods of three months with weekly measurements in young and mature leaves. Gas exchanges were higher in young leaves for almost the entire experiment. Mature leaves showed greater reduction in gas exchange. The multivariate analysis of biotic and abiotic variables indicated that vapor pressure deficit (VPD), O 3 concentration and radiation were the main variables associated with gas exchange decrease in young leaves. In mature leaves the influence of VPD is lower, but the temperature importance is higher. Moreover, the opposition between assimilation and O 3 is more evident in mature leaves, indicating their greater sensitivity to O 3 . Keywords: carbon assimilation, ozone phytotoxicity, stomatal conductance RESUMO -(Condições meteorológicas, concentração de ozônio e idade da folha afetam as trocas gasosas em Psidium guajava 'Paluma'). Este estudo teve como objetivo investigar a influência da idade da folha, das condições meteorológicas e da concentração do ozônio (O 3 ) nas trocas gasosas em Psidium guajava 'Paluma'. Plantas jovens foram cultivadas e expostas de modo padronizado na cidade de São Paulo, SP, em seis períodos de três meses, com medidas semanais em folhas jovens e maduras. As trocas gasosas foram mais altas nas folhas jovens durante quase todo o experimento. As folhas maduras apresentaram maior redução das trocas gasosas. A análise multivariada das variáveis bióticas e abióticas indicou que o déficit de pressão de vapor (DPV), a concentração de O 3 e a radiação foram as principais variáveis associadas à redução das trocas gasosas nas folhas jovens. Nas folhas maduras a influencia do DPV é menor, mas a da temperatura é maior. Por outro lado, a oposição entre assimilação e O 3 é mais evidente nas folhas maduras, indicando sua maior sensibilidade ao O 3 . Palavras-chave: assimilação de carbono, condutância estomática, fitotoxicidade do ozônio

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Responses of a tropical tree species to ozone: visible leaf injury, growth, and lipid peroxidation

Cited by 9 publications

References 28 publications

Ozone disrupts the communication between plants and insects in urban and suburban areas: an updated insight on plant volatiles

Ozone disrupts the communication between plants and insects in urban and suburban areas: an updated insight on plant volatiles

Ozone‐induced foliar damage and release of stress volatiles is highly dependent on stomatal openness and priming by low‐level ozone exposure in Phaseolus vulgaris

Meteorological conditions, ozone concentration and leaf age affect gas exchange in Psidium guajava ‛Palumaʼ

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