Details

Autor(en) / Beteiligte

• Zhao, Yi
• Guo, Bing
• Liu, Zhouli
• Wang, Xiaohan
• Xiao, Guangmin
• Bol, Roland

Titel

A meta-analysis of elevated O.sub.3 effects on herbaceous plants antioxidant oxidase activity

Ist Teil von

• PloS one, 2024-06, Vol.19 (6), p.e0305688

Ort / Verlag

Public Library of Science

Erscheinungsjahr

2024

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Increases in near-surface ozone (O.sub.3) concentrations is a global environmental problem. High-concentration O.sub.3 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 O.sub.3 concentration, and duration of O.sub.3 stress in plants. We used a meta-analysis approach based on 31 studies 343 observations) to examine the effects of elevated O.sub.3 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), O.sub.3 concentration, and duration of O.sub.3 stress in plants. Our results showed that the effects of elevated O.sub.3 on plant membrane lipid peroxidation depending on plant species, O.sub.3 concentration, and duration of O.sub.3 stress in plants. The wheat SOD and POD activity was significantly lower compared to the herbs and rice (P60 days, may result in antioxidant SOD lose its regulatory ability, and the antioxidant component POD in the symplast is mainly used to resist O.sub.3 damage, and (3) the important factors affected the activity of SOD and POD in plants were not consistent: the duration of O.sub.3 stress in plants was more important than plant species and O.sub.3 concentration for SOD activity. However, for POD activity, plant species was the most important factor.