State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing, China.
State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China; College of Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang, China.
Ecotoxicol Environ Saf. 2021 Jan 15;208:111644. doi: 10.1016/j.ecoenv.2020.111644. Epub 2020 Nov 18.
Soybean (Glycine max) production is seriously threatened by ground-level ozone (O) pollution. The goal of our study is to summarize the impacts of O on physiology, growth, yield, and quality of soybean, as well as root parameters. We performed meta-analysis on the collated 48 peer-reviewed papers published between 1980 and 2019 to quantitatively summarize the response of soybean to elevated O concentrations ([O]). Relative to charcoal-filtered air (CF), elevated [O] significantly accelerated chlorophyll degradation, enhanced foliar injury, and inhibited growth of soybean, evidenced by great reductions in leaf area (-20.8%), biomass of leaves (-13.8%), shoot (-22.8%), and root (-16.9%). Shoot of soybean was more sensitive to O than root in case of biomass. Chronic ozone exposure of about 75.5 ppb posed pronounced decrease in seed yield of soybean (-28.3%). In addition, root environment in pot contributes to higher reduction in shoot biomass and yield of soybean. Negative linear relationships were observed between yield loss and intensity of O treatment, AOT40. The larger loss in seed yield was significantly associated with higher reduction in shoot biomass and other yield component. This meta-analysis demonstrates the effects of elevated O on soybean were pronounced, suggesting that O pollution is still a soaring threat to the productivity of soybean in regions with high ozone levels.
大豆（Glycine max）的生产受到地面臭氧（O）污染的严重威胁。我们研究的目的是总结 O 对大豆的生理、生长、产量和品质以及根系参数的影响。我们对 1980 年至 2019 年间发表的 48 篇经过同行评审的论文进行了荟萃分析，以定量总结大豆对升高的 O 浓度（[O]）的响应。与木炭过滤空气（CF）相比，升高的[O]显著加速了叶绿素的降解，增加了叶片伤害，并抑制了大豆的生长，表现在叶片面积（-20.8%）、叶片生物量（-13.8%）、地上部分（-22.8%）和根（-16.9%）的大幅减少。在生物量方面，大豆的地上部分比根对 O 更敏感。约 75.5 ppb 的慢性臭氧暴露对大豆的种子产量造成了明显的减少（-28.3%）。此外，盆中根际环境导致大豆地上部分生物量和产量的更大减少。在产量损失与 O 处理强度（AOT40）之间观察到负线性关系。更大的种子产量损失与地上部分生物量和其他产量组成部分的更大减少显著相关。这项荟萃分析表明，升高的 O 对大豆的影响是显著的，这表明在臭氧水平较高的地区，O 污染仍然是大豆生产力的一个严重威胁。
