Plant signalling in acute ozone exposure

Vainonen, Julia P.; Kangasjärvi, Jaakko

doi:10.1111/pce.12273

Cited by 188 publications

(152 citation statements)

References 175 publications

(230 reference statements)

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“…High levels of O 3 negatively affect photosynthesis in plants Salvatori et al, 2015;Vainonen and Kangasjärvi, 2015). O 3 oxidizes thylakoid membranes in the chloroplasts, resulting in chlorophyll degradation and early leaf senescence (Bergmann et al, 1999; Ranieri Tables S8 and S9).…”

Section: Effects Of O 3 Stress On Photosynthesis and Stomatal Regulationmentioning

confidence: 99%

“…Depending on the duration and intensity of the exposure, O 3 can induce a range of responses that are typically deleterious to plant fitness, disturbing photosynthetic processes, energy and carbon metabolism, cellular detoxification, and transpiration Dizengremel et al, 2008;Fares et al, 2010;Goumenaki et al, 2010;Salvatori et al, 2015). While acute exposure to high O 3 levels can rapidly induce cell death and chlorosis (Ashmore, 2005;Kangasjärvi et al, 2005;Vainonen and Kangasjärvi, 2015), negative yield responses are not always correlated with the severity of symptoms in leaves, and exposure to O 3 can affect metabolic processes before any visible injury (Long and Naidu, 2002;Dizengremel et al, 2009;Sawada and Kohno, 2009;Pinto et al, 2010).…”

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confidence: 99%

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Central Metabolic Responses to Ozone and Herbivory Affect Photosynthesis and Stomatal Closure

et al. 2016

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Plants have evolved adaptive mechanisms that allow them to tolerate a continuous range of abiotic and biotic stressors. Tropospheric ozone (O 3 ), a global anthropogenic pollutant, directly affects living organisms and ecosystems, including plant-herbivore interactions. In this study, we investigate the stress responses of Brassica nigra (wild black mustard) exposed consecutively to O 3 and the specialist herbivore Pieris brassicae. Transcriptomics and metabolomics data were evaluated using multivariate, correlation, and network analyses for the O 3 and herbivory responses. O 3 stress symptoms resembled those of senescence and phosphate starvation, while a sequential shift from O 3 to herbivory induced characteristic plant defense responses, including a decrease in central metabolism, induction of the jasmonic acid/ethylene pathways, and emission of volatiles. Omics network and pathway analyses predicted a link between glycerol and central energy metabolism that influences the osmotic stress response and stomatal closure. Further physiological measurements confirmed that while O 3 stress inhibited photosynthesis and carbon assimilation, sequential herbivory counteracted the initial responses induced by O 3 , resulting in a phenotype similar to that observed after herbivory alone. This study clarifies the consequences of multiple stress interactions on a plant metabolic system and also illustrates how omics data can be integrated to generate new hypotheses in ecology and plant physiology.

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Section: Effects Of O 3 Stress On Photosynthesis and Stomatal Regulationmentioning

confidence: 99%

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confidence: 99%

Central Metabolic Responses to Ozone and Herbivory Affect Photosynthesis and Stomatal Closure

et al. 2016

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“…Ozone concentration has been increasing around the world due to industrial revolution which released ozone reactants such as nitrogen dioxide and volatile organic compounds (Vainonen and KangasjÄRvi, 2015). Typically, ozone causes damage to plants by penetration to stomata.…”

Section: Introductionmentioning

confidence: 99%

“…O 2 -, HO -and H 2 O 2 (Umponstira et al, 2006) and causes leaf injury (Felzer et al, 2007), leaf senescence, reduces chlorophyll contents, plant metabolism, growth and physiological processes in different ways (Al-Rawahy et al, 2013). Ozone inhibits carbon dioxide fixation in carboxylation pathway and reduces quantities and efficiency of rubisco enzymes in Calvin cycle (Vainonen and Kangasjärvi, 2015). Therefore, it decreases photosynthesis and affects plant growth , as well as reduces leaf area and productivity (Sarkar and Agrawal, 2012;Noormets et al, 2010) Enhancing plant strength using chitosan plays an important role in inhibition of ozone damage.…”

Section: Introductionmentioning

confidence: 99%

Effect of chitosan on physiology, photosynthesis and biomass of rice (Oryza sativa L.) under elevated ozone

Phothi¹,

Theerakarunwong²

2017

Aust J Crop Sci

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This research aimed to study the effects of chitosan on physiology, photosynthesis and biomass of rice cultivar RD47 under elevated ozone. Rice samples were grown at indoor climate controlled chambers, allowing the inlet air to pass through charcoal filters. For combined effects of chitosan and ozone, rice was soaked and sprayed with chitosan 0.05% (W/V) under elevated ozone concentration at 40 ppb (Chi+EO 3 40) and 70 ppb (Chi+EO 3 70). Control groups (CF) with no additional ozone were also studied. Samples were analyzed weekly for tiller number per plants, leaf area, leaf chlorophyll, photosynthesis, shoot biomass, root biomass and total biomass. The results obviously showed that ozone at the concentration of both 40 and 70 ppb caused negative effects on rice physiology, photosynthesis and biomass. The 70 ppb concentration, particularly, caused sever damage. Whilst soaking and spraying with chitosan could significantly reduce the harmful effects of ozone compared with the control group. For the samples soaked and sprayed with chitosan under elevated ozone for 21 days, Chi+EO 3 40 and Chi+EO 3 70 significantly performed more photosynthesis and contained more leaf chlorophyll than EO 3 40 and EO 3 70, respectively (p ≤ 0.05). In addition, chitosan could reduce the ozone negative effects and increased higher physiology and photosynthesis rate. However, there was no significant difference in biomass compared with the control group. Even through, ozone has been gradually increasing which made plants at risk, chitosan treatment could significantly ameliorate the effect of ozone and serve as a plant growth promoter with no harmful to human being.

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“…The high level of ozone affects protein activity, gene expression and metabolism in plant cell quickly (Vainonen and Kangasjärvi, 2015;Ueda et al, 2013). This is a typical reaction of plant cell during exposure to ozone, which induces an oxidative products in plant cells, resulting in the generation and accumulation of ROS such as H 2 O 2 , O 2…”

Section: Discussionmentioning

confidence: 99%

Combining effects of ozone and Xanthomonas oryzae pv. oryzae on antioxidants and phytoalexins in rice (Oryza sativa L.)

Buawat¹,

Hasegawa²,

Umponstira³

2017

Aust J Crop Sci

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Ozone is the most oxidative air pollutant and considered as an abiotic stress which harm to vegetation and crop. Similarly, biological stressor such as plant pathogen could cause severe damage to crops. Combination effects from both stresses will potentially lead to economic loss. Basically, plants will response to both abiotic stress and pathogenic stressor by generate antioxidants and phytoalexins. The concentration of these chemical indicate stress level in plant and also defence system response. This research is aimed to investigate the combination effects of ozone and Xanthomonas oryzae pv. oryzae on antioxidants and phytoalexins in rice (Oryza sativa L. cv. KDML 105). In this study, 45-day-old rice plants were used. Ozone was elevated at concentrations of 100, 200 and 300 ppb in the fumigating chambers for 12 hours. Xanthomonas oryzae pv. oryzae which caused bacterial blight disease in rice was selected as plant pathogen. Combining effects of ozone and Xanthomonas oryzae pv. oryzae were examined using ozone at a concentration of 100 ppb and Xanthomonas oryzae pv. oryzae 1x10 8 cells/ml inoculation. The experimental design was a completely randomized design with 2×2 factorials treatment and three replications required. Temperature, relative humidity and light intensity in fumigating chambers were controlled. The results of the combining effects showed the amount of antioxidants and phytoalexins were higher than those in single treatment. The experimental data indicated that the combining effects will result in more stress in rice. This suggests that, in rice plantation area with experience of ozone episode, pathogenic resistance rice strain should be considered to reduce combining effects.

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Plant signalling in acute ozone exposure

Cited by 188 publications

References 175 publications

Central Metabolic Responses to Ozone and Herbivory Affect Photosynthesis and Stomatal Closure

Central Metabolic Responses to Ozone and Herbivory Affect Photosynthesis and Stomatal Closure

Effect of chitosan on physiology, photosynthesis and biomass of rice (Oryza sativa L.) under elevated ozone

Combining effects of ozone and Xanthomonas oryzae pv. oryzae on antioxidants and phytoalexins in rice (Oryza sativa L.)

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