TY - JOUR
T1 - Microplastics affect rice (Oryza sativa L.) quality by interfering metabolite accumulation and energy expenditure pathways
T2 - A field study
AU - Wu, Xiang
AU - Hou, Huijie
AU - Liu, Yao
AU - Yin, Shanshan
AU - Bian, Shijie
AU - Liang, Sha
AU - Wan, Chaofan
AU - Yuan, Shushan
AU - Xiao, Keke
AU - Liu, Bingchuan
AU - Hu, Jingping
AU - Yang, Jiakuan
N1 - Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2022/1/15
Y1 - 2022/1/15
N2 - Microplastic accumulation in agricultural soils can stress plants and affects quality of the products. Current research on the effects of microplastics on plants is not consistent and the underlying mechanisms are yet unknown. Here, the molecular mechanisms of the stress response were investigated via metabolomic and transcriptomic analyses of rice Oryza sativa L. II Y900 and XS123 under the exposure of polystyrene microplastics (PS-MPs) in a field study. Distinct responses were obtained in these two rice subspecies, showing decreased head rice yield by 10.62% in Y900 and increase by 6.35% in XS123. The metabolomics results showed that PS-MPs exposure inhibited 29.63% of the substance accumulation-related metabolic pathways and 43.25% of the energy expenditure-related metabolic pathways in the Y900 grains; however, these related pathways were promoted in the XS123 grains. The transcriptomics results indicated that the expression of genes encoding proteins involved in the tricarboxylic acid cycle in the Y900 grains was inhibited, but it was enhanced in the XS123 grains. The XS123 subspecies could response against microplastic exposure stress through the metabolite accumulation and energy expenditure pathways, while the Y900 could not. The results provide insight into the perturbation of rice grains in farmlands with microplastics contamination.
AB - Microplastic accumulation in agricultural soils can stress plants and affects quality of the products. Current research on the effects of microplastics on plants is not consistent and the underlying mechanisms are yet unknown. Here, the molecular mechanisms of the stress response were investigated via metabolomic and transcriptomic analyses of rice Oryza sativa L. II Y900 and XS123 under the exposure of polystyrene microplastics (PS-MPs) in a field study. Distinct responses were obtained in these two rice subspecies, showing decreased head rice yield by 10.62% in Y900 and increase by 6.35% in XS123. The metabolomics results showed that PS-MPs exposure inhibited 29.63% of the substance accumulation-related metabolic pathways and 43.25% of the energy expenditure-related metabolic pathways in the Y900 grains; however, these related pathways were promoted in the XS123 grains. The transcriptomics results indicated that the expression of genes encoding proteins involved in the tricarboxylic acid cycle in the Y900 grains was inhibited, but it was enhanced in the XS123 grains. The XS123 subspecies could response against microplastic exposure stress through the metabolite accumulation and energy expenditure pathways, while the Y900 could not. The results provide insight into the perturbation of rice grains in farmlands with microplastics contamination.
KW - Microplastics
KW - Molecular perturbation mechanisms
KW - Rice
KW - Tricarboxylic acid cycle
UR - http://www.scopus.com/inward/record.url?scp=85112428944&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2021.126834
DO - 10.1016/j.jhazmat.2021.126834
M3 - 文章
C2 - 34390954
AN - SCOPUS:85112428944
SN - 0304-3894
VL - 422
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
M1 - 126834
ER -