Article
Engineering, Environmental
Ni-Chen Zhang, Zhi-Feng Hong, Rong-Liang Qiu, Yuan-Qing Chao, Ya-Fei Yu, A. Dan
Summary: The study demonstrates the potential effectiveness of phenolic root exudates from wetland plants in accelerating the biodegradation of alkylphenols, primarily through soil adsorption, microbial degradation, and plant uptake as the main removal pathways. Different root exudates and substrates can affect the activity of specific enzymes, promoting the degradation of alkylphenols.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Rui Zhao, Wenjie Ren, Huimin Wang, Zhenxuan Li, Ying Teng, Yongming Luo
Summary: Carbon nanotubes have a positive effect on the growth of alfalfa and the uptake of pyrene. The presence of carbon nanotubes can increase the shoot fresh weight of alfalfa and the accumulation of pyrene in the roots. Metabolomics data reveals that carbon nanotubes can regulate the metabolism of root exudates, helping alfalfa alleviate the stress from pyrene contamination.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Plant Sciences
Yulong Lin, Pan Zhang, Qingying Wu, Ying Zhang, Qianhao Wei, Yihang Sun, Yuchen Wu, Shixuan Sun, Guowen Cui
Summary: This study investigated the adaptation of Leymus chinensis root exudates to different degraded levels of soil and the mechanism of rhizosphere restoration. The research found that the metabolic characteristics of root exudates were significantly influenced by soil degradation, with changes in lipid metabolism pathways and energy metabolism pathways to help plants adapt to unfavorable soil conditions.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Aiga Mackevica, Lyndsey Hendriks, Olga Meili-Borovinskaya, Anders Baun, Lars Michael Skjolding
Summary: The study focused on understanding the interactions between engineered nanoparticles (NPs) and unicellular algae (Raphidocelis subcapitata) in aquatic ecosystems. The association of CeO2 NPs with algae and changes to the cellular elemental profile were investigated. The results showed that the association between cells and CeO2 NPs varied depending on the exposure concentration and algal growth conditions.
Article
Environmental Sciences
Liya Jiao, Xuesong Cao, Chuanxi Wang, Feiran Chen, Hua Zou, Le Yue, Zhenyu Wang
Summary: Maximizing the potential of plant-microbe systems can address sustainability issues in agroecosystems. The interaction between root exudates and rhizobacteria is not well understood. Soil amendment with selenium NMs significantly improved rice seedling growth and affected the composition of root exudates and rhizobacteria.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Xinhan Chen, Zhen Hu, Huijun Xie, Jian Zhang, Shuang Liang, Haiming Wu, Linlan Zhuang
Summary: This study investigates the effect of root exudates on the dynamics of benzo[a]pyrene (BaP) in a simulated wetland sediment system, and finds that the priming effects of root exudates accelerate the transformation and depuration of BaP in wetlands. These priming effects promote the removal processes of BaP, reducing its half-life and lowering its potential hazard in wetlands.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Plant Sciences
Benjamin M. Delory, Hannes Schempp, Sina Maria Spachmann, Laura Stoerzer, Nicole M. van Dam, Vicky M. Temperton, Alexander Weinhold
Summary: The study revealed that soil chemical legacies can influence root foraging in later arriving plants by affecting the metabolome of soil solutions from forb or grass communities. The metabolomes of soil solutions differed between forb and grass communities, and while there was no effect on Festuca rubra, Dianthus deltoides showed decreased root foraging when exposed to soil solutions from either community. This reduced root exploration was found to be independent of the total nitrogen uptake.
PLANT CELL AND ENVIRONMENT
(2021)
Article
Microbiology
Selma Cadot, Hang Guan, Moritz Bigalke, Jean-Claude Walser, Georg Jander, Matthias Erb, Marcel G. A. van der Heijden, Klaus Schlaeppi
Summary: The study revealed that benzoxazinoids (BXs) have a selective impact on the composition of root and rhizosphere microbiota in adult maize plants, with significant effects observed in root fungi. The impact of BX secretion is at least as strong as genetic background, indicating that BX exudation is a key trait in structuring maize-associated microbiota. Across different environments, BX exudation consistently depleted certain microbial lineages and enriched potential plant pathogenic fungi.
Review
Plant Sciences
Henry W. G. Birt, Courtney L. Tharp, Gordon F. Custer, Francisco Dini-Andreote
Summary: Plant roots are influenced by a variety of microbial taxa, and the interactions between plants and microbes at the root-soil interface are affected by variations in root phenotypes. Manipulating root phenotypes allows for targeted manipulation of plant-associated microbes, which can have significant impacts on plant health.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Yan Wang, Kaitai Liu, Yunyun Zhou, Yong Chen, Chenzhong Jin, Yihong Hu
Summary: This study investigated the relationship between phenolic acid biosynthesis and continuous cropping (CC) in Polygonatum odoratum roots through miRNA-seq and RNA-seq analysis. Several key DEGs and DEMs involved in phenolic acid synthesis were identified, providing a foundation for further understanding phenolic acid biosynthesis during CC of P. odoratum roots.
Article
Agronomy
Yan Zhang, Jiaping Liang, Zhenya Tang, Qiliang Yang
Summary: Panax notoginseng is an important medicinal crop in China, but root rot during the rainy season has hindered its development. This study investigated the effects of rainfall and fertilizer on root exudates, soil bacterial structure, and root rot in P. notoginseng. The results showed that a rain shelter had a greater impact than fertilizer, and the combination of both further reduced root rot incidence. The DWF treatment decreased soil moisture, phenolic acid concentration, and root rot incidence, while promoting the growth of beneficial bacteria, leading to the lowest incidence of root rot.
Article
Environmental Sciences
Chong Liu, Wen-Shen Liu, Antony van der Ent, Jean Louis Morel, Hong-Xiang Zheng, Guo-Bao Wang, Ye-Tao Tang, Rong-Liang Qiu
Summary: The study found that the plant Phytolacca americana L. can efficiently hyperaccumulate manganese and rare earth elements, and the accumulation of elements is closely related to soil properties.
Article
Environmental Sciences
Ni-chen Zhang, Dan A, Yuan-qing Chao, Hai-Yan Li, Charles Li, Qing-qi Lin, Ya-ying Li, Rong-liang Qiu
Summary: This study investigated the co-metabolic degradation of PAHs by adding exogenous root organic acids (ROAs). The results showed that more than 90% of PAHs were removed from the rhizosphere of Phragmites australis. ROAs promoted the enrichment of unrelated degrading bacteria and non-specific dioxygenases, leading to improved PAH degradation efficiency. The highest PAH removal performance was observed in the HFe-CA unit, where high iron concentrations enriched specific bacteria and stimulated specific dioxygenase for PAH degradation.
ENVIRONMENTAL POLLUTION
(2023)
Article
Plant Sciences
Hongjie Yu, Danmei Gao, Muhammad Khashi U. Rahman, Shaocan Chen, Fengzhi Wu
Summary: This study found that tomato plants grown with growth-promoting potato onion or its root exudates increased root distribution and length density, while tomato plants grown with potato onion of no growth-promoting potential showed decreased root distribution and length density. The root exudates profiling analysis identified L-phenylalanine as a compound found only in the root exudates of growth-promoting potato onion. Further experiments demonstrated that L-phenylalanine could alter tomato root distribution and growth direction and also affect the auxin distribution and amyloplast concentration in the root cells.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Agriculture, Multidisciplinary
Keke Dang, Jinfeng Hou, Hong Liu, Junwei Peng, Yang Sun, Jiangang Li, Yuanhua Dong
Summary: In this study, the changes in rhizobacteria, endobacteria, and root exudates during the pathogenesis of bacterial wilt in ginger caused by Ralstonia solanacearum (Rs) were analyzed using high-throughput sequencing and gas chromatography-mass spectrometry (GC-MS). The results showed that Rs infection led to a 50.00% incidence of bacterial wilt in ginger and altered the composition of bacterial communities in both the endosphere and rhizosphere. Furthermore, the changes in rhizobacterial composition induced corresponding changes in endobacterial and root exudate compositions. The upregulated exudates inhibited ginger bacterial wilt, indicating that ginger produces antibacterial compounds as a defense mechanism against bacterial pathogens.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
