Article
Environmental Sciences
Lu Wang, Xia Jia, Yonghua Zhao, ChunYan Zhang, Yunfen Gao, Xiaodi Li, Kemeng Cao, Ningjing Zhang
Summary: The study showed that elevated CO2 concentration has significant effects on the mycorrhizal fungi (AMF) and their relationship with cadmium (Cd). Under ECO2 conditions, the abundance and diversity of AMF in rhizosphere soils increased, while the abundance and diversity in roots decreased.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Plant Sciences
Yunjie Wang, Lu Wang, Xia Jia, Yonghua Zhao, Chunyan Zhang
Summary: This study examined the regulation of arbuscular mycorrhizal fungi (AMF) on antioxidant enzymes in Robinia pseudoacacia leaves grown in cadmium-contaminated soils. The results showed that AMF could alleviate oxidative stress in plants from cadmium exposure by reducing malondialdehyde levels and regulating gene expression of Cu/Zn-superoxide dismutase (SOD) and catalase (CAT). However, the regulation of AMF on antioxidant enzymes was weakened under elevated CO2 conditions. These findings contribute to our understanding of the antioxidant system regulation by AMF in plants growing in heavy metal-contaminated soils under increasing CO2 scenarios.
JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
(2023)
Article
Environmental Sciences
Chunyan Zhang, Xia Jia, Yonghua Zhao, Lu Wang, Kemeng Cao, Ningjing Zhang, Yunfeng Gao, Ziwei Wang
Summary: Flavonoids play a crucial role in plant growth and protection, with elevated CO2 levels potentially enhancing the synthesis of total flavonoids in seedlings grown in Cd-contaminated soils. However, certain flavonoids may decrease over time under these conditions.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Environmental Sciences
Lu Wang, Xia Jia, Yonghua Zhao, ChunYan Zhang, Jiamin Zhao
Summary: The study found that under combined treatment of elevated CO2 and cadmium, the richness and diversity of arbuscular mycorrhizal fungi (AMF) community decreased, while the activities of superoxide dismutase and peroxidase increased. Cadmium content was negatively correlated with AMF community richness and gene abundance, and certain AMF had significant effects on antioxidant enzyme activities.
ENVIRONMENTAL POLLUTION
(2022)
Review
Environmental Sciences
Michael O. Asare, Jirina Szakova, Pavel Tlustos
Summary: The study used scattered literature to summarize the effects of excessive Cd, As, and Pb from contaminated soils on plant secondary metabolites/bioactive compounds. The study provided a systematic overview of the sources and forms of these risk elements in soils, their uptake by plants, the mechanisms governing their interaction during the formation of secondary metabolites, and the subsequent effects. The biogeochemical characteristics of soils and the translocation mechanisms in plants play crucial roles in risk element accumulation and the impact on secondary metabolites.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Xia Jia, Yunfeng Gao, Xiaodi Li, Yonghua Zhao, Lu Wang, Chunyan Zhang
Summary: This study investigated the impacts of elevated CO2 and cadmium levels on soil nitrification in the rhizosphere of Robinia pseudoacacia L. seedlings. The results showed that elevated CO2 combined with Cd pollution generally stimulated nitrification enzyme activities and influenced bacterial community structures.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Microbiology
Liuhui Zhao, Tao Yang, Jinxing Zhou, Xiawei Peng
Summary: In this study, the effects of different growth substrates on the mycorrhizal colonization and phosphorus uptake by black locust plants in metal-contaminated soils were assessed. The results showed that AMF inoculation significantly increased colonization rates in plants grown in substrates with higher nutrient availability and lead concentration. Additionally, AMF inoculation improved the biomass and height of black locust plants. These findings highlight the importance of selecting optimal AMF isolates for phytoremediation of heavy metal-contaminated soil.
Article
Engineering, Environmental
Xiong Yang, Dongming Wang, Ye Tao, Min Shen, Wei Wei, Chuang Cai, Changfeng Ding, Jiuyu Li, Lian Song, Bin Yin, Chunwu Zhu
Summary: This study investigates the effects and mechanisms of elevated CO2 concentration on cadmium (Cd) uptake by rice in a 3-year experiment. The results show that increased CO2 concentration leads to higher levels of dissolved Fe2+ in soil, resulting in more low-crystalline Fe oxides being deposited on the root surface. This inhibits the uptake of Cd by rice.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Forestry
Mingyan Li, Xiao Guo, Song Zhao, Lele Liu, Zhenwei Xu, Ning Du, Weihua Guo
Summary: This study focused on the effects of variability in both the intensity and frequency of water supply on the physiological traits, biomass, and growth of Robinia pseudoacacia seedlings. Results showed that lower rainfall intensity and frequency significantly reduced the photosynthetic performance, growth, and biomass of the tree seedlings, with the seedlings being more sensitive to rainfall frequency than to rainfall intensity.
Article
Environmental Sciences
Danni Wu, Yidi Zha, Xiaojie Wang, Yabo Wang, Yepu Li, Ying Yin, Wenchao Du, Fuxun Ai, Hongyan Guo
Summary: Elevated CO2 levels can affect the behavior of heavy metals in soils, posing a threat to crop quality. This study investigated the migration of coexisting cadmium (Cd) and lead (Pb) in flooded soils under elevated CO2 levels. The results showed that elevated CO2 decreased soil pH, leading to the release of Cd and Pb into soil porewater. Elevated CO2 also influenced the uptake and transfer of Cd and Pb in water dropwort plants, with different effects on each metal.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Yi-Zhao Liu, Ri-Dong Fan, Song-Yu Liu, Huan He
Summary: This study explored the activation effect of oxalic acid on bone meal (BM) and developed an oxalic acid-activated bone meal (ABM) for improving heavy metal immobilization efficiency. The results showed that ABM had higher solubility and outperformed BM in terms of immobilizing lead (Pb) and cadmium (Cd). The leaching concentration of Pb from ABM immobilized soils met regulatory limits and was significantly lower than that from BM immobilized soils. After 90 days of curing, ABM also showed better Cd immobilization performance than BM.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Plant Sciences
Xiao Liu, Qinyuan Zhang, Meixia Song, Ning Wang, Peixian Fan, Pan Wu, Kening Cui, Peiming Zheng, Ning Du, Hui Wang, Renqing Wang
Summary: Climate change has led to uneven water distribution, alternating between drought and rewetting, negatively impacting plant species. Research shows that repeated drought-rewatering can induce stress imprint and compensatory mechanisms in plants, while mixed planting can weaken drought inhibition and enhance overall drought resistance.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Xia Wang, Yanli Fan, Congcong Zhang, Yihong Zhao, Guangyuan Du, Min Li, Bingcheng Si
Summary: This study aimed to identify reliable and easily available drought stress indices for trees and determine the thresholds at which drought activates important physiological responses. It was found that midday xylem water potential (psi(md)) was a better indicator of drought stress than soil water availability (SWA) and predawn xylem water potential (psi(pd)). The study also established five stress levels based on the observed changes in psi(md).
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Chaoxia Lu, Lingyu Li, Xiuling Liu, Min Chen, Shubo Wan, Guowei Li
Summary: Soil salinization is a major constraint for food security and ecological stability. Salt stress significantly affects the growth and photosynthesis of Robinia pseudoacacia seedlings, leading to decreased biomass and photosynthetic parameters, as well as damage to chloroplast structure. Different concentrations of NaCl treatment revealed the impact on ion content, antioxidant activity, and gene expression related to ion transport and chloroplast development.
Article
Environmental Sciences
Jerome C. J. Petit, Patrick Maggi, Catherine Pirard, Corinne Charlier, Ann Ruttens, Amandine Lienard, Gilles Colinet, Suzanne Remy
Summary: This study investigated the exposure levels of trace metals and metalloids among a group of gardeners in an allotment garden, and found high concentrations of lead, cadmium, and arsenic in their blood and urine samples, which were higher than those of the local population living on contaminated soils. The study suggests that these gardeners are at risk of chronic kidney diseases due to co-exposure and additive effects of these contaminants.
ENVIRONMENTAL POLLUTION
(2022)