Experimental warming alleviates the adverse effects from tropospheric ozone on two urban tree species

Xu, Sheng; Wang, Yijing; Zhang, Weiwei; Li, Bo; Du, Zhen‐Ting; He, Xingyuan; Chen, Wei; Zhang, Yue; Li, Yan; Li, Mai‐He; Schaub, Marcus

doi:10.1016/j.envpol.2020.115289

Cited by 9 publications

(2 citation statements)

References 129 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The effects of different O 3 concentrations on the MDA content of herbaceous plants were significantly different (Fig 2c). The MDA content in herbaceous plants increased with an increase O 3 concentrations in their environment, which is consistent with other studies on the effect of O 3 on membrane lipid peroxidation in trees [16,40].…”

Section: Plos Onesupporting

confidence: 92%

“…The toxic effects of O 3 on plants are mainly due to its strong oxidation ability, which is a concern. Elevated O 3 is taken by plants through stomata, causing visible damage to leaf [ 11 ], reduces photosynthesis [ 12 , 13 ], accelerates plant aging [ 14 ], inhibits plant growth [ 15 , 16 ], and can even lead to plant death. When plants are subjected to O 3 stress, they can adapt to (or slow down) the stress of elevated O 3 levels by adjusting their physiological and biochemical metabolic pathways, such as by reducing stomatal conductance, increasing antioxidant activity, increasing the synthesis of antioxidant substances, and enhancing the expression of antioxidant genes, which improves their self-protection and repair ability [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A meta-analysis of elevated O3 effects on herbaceous plants antioxidant oxidase activity

Zhao,

Guo,

Liu

et al. 2024

PLoS ONE

View full text Add to dashboard Cite

Increases in near-surface ozone (O3) concentrations is a global environmental problem. High-concentration O3 induces stress in plants, which can lead to visible damage to plants, reduced photosynthesis, accelerated aging, inhibited growth, and can even plant death. However, its impact has not been comprehensively evaluated because of the response differences between individual plant species, environmental O3 concentration, and duration of O3 stress in plants. We used a meta-analysis approach based on 31 studies 343 observations) to examine the effects of elevated O3 on malondialdehyde (MDA), superoxide dismutase (SOD), and peroxidase (POD) activities in herbaceous plants. Globally, important as they constitute the majority of the world’s food crops. We partitioned the variation in effect size found in the meta-analysis according to the presence of plant species (ornamental herb, rice, and wheat), O3 concentration, and duration of O3 stress in plants. Our results showed that the effects of elevated O3 on plant membrane lipid peroxidation depending on plant species, O3 concentration, and duration of O3 stress in plants. The wheat SOD and POD activity was significantly lower compared to the herbs and rice (P<0.01). The SOD activity of all herbaceous plants increased by 34.6%, 10.5%, and 26.3% for exposure times to elevated O3 environments of 1–12, 13–30, and 31–60 days, respectively. When the exposure time was more than 60 days, SOD activity did not increase but significantly decreased by 12.1%. However, the POD activity of herbaceous plants increased by 30.4%, 57.3%, 21.9% and 5.81%, respectively, when exposure time of herbaceous plants in elevated O3 environment was 1–12, 13–30, 31–60 and more than 60 days. Our meta-analysis revealed that (1) rice is more resistant to elevated O3 than wheat and ornamental herbs likely because of the higher activity of antioxidant components (e.g., POD) in the symplasts, (2) exposure to elevated O3 concentrations for >60 days, may result in antioxidant SOD lose its regulatory ability, and the antioxidant component POD in the symplast is mainly used to resist O3 damage, and (3) the important factors affected the activity of SOD and POD in plants were not consistent: the duration of O3 stress in plants was more important than plant species and O3 concentration for SOD activity. However, for POD activity, plant species was the most important factor.

show abstract

Section: Plos Onesupporting

confidence: 92%