TY  - JOUR
AU  - Pang, Zhihao
AU  - Mei, Yuchao
AU  - Nikolić, Nina
AU  - Nikolic, Miroslav
AU  - Li, Tingqiang
AU  - Peng, Hongyun
AU  - Liang, Yongchao
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1978
AB  - Trivalent chromium [Cr(III)] is a threat to the environment and crop production. Silicon (Si) has been shown to be effective in mitigating Cr(III) toxicity in rice. However, the mechanisms by which Si reduces Cr(III) uptake in rice are unclear. Herein, we hypothesized that the ability of Si to obstruct Cr(III) diffusion via apoplastic bypass is related to silicic acid polymerization, which may be affected by Cr(III) in rice roots. To test this hypothesis, we employed hydroponics experiments on rice (Oryza sativa L.) and utilized apoplastic bypass tracer techniques, as well as model simulations, to investigate 1) the effect of Si on Cr(III) toxicity and its obstruction capacity via apoplastic bypass, 2) the effect of Cr(III) on silicic acid polymerization, and 3) the relationship between the degree of silicic acid polymerization and its Cr(III) obstruction capacity. We found that Si reversed the damage caused by Cr(III) stress in rice. Si exerted an obstruction effect in the apoplast, significantly decreasing the share of Cr(III) uptake via the apoplastic bypass from 18% to 11%. Moreover, Cr(III) reduced silica particles' radii and increased Si concentration in roots. Modeling revealed that a 5-fold reduction in their radii decreased the diffusion of Cr(III) in apoplast by approximately 17%. We revealed that Cr(III) promoted silicic acid polymerization, resulting in the formation of a higher number of Si particles with a smaller radius in roots, which in turn increased the ability of Si to obstruct Cr(III) diffusion. This negative feedback regulatory mechanism is novel and crucially important for maintaining homeostasis in rice, unveiling the unique role of Si under Cr(III) ion stress and providing a theoretical basis for promoting the use of Si fertilizer in the field.
PB  - Elsevier
T2  - Journal of Hazardous Materials
T1  - From promoting aggregation to enhancing obstruction: A negative feedback regulatory mechanism of alleviation of trivalent chromium toxicity by silicon in rice
SP  - 131720
VL  - 457
DO  - doi.org/10.1016/j.jhazmat.2023.131720
ER  - 

@article{
author = "Pang, Zhihao and Mei, Yuchao and Nikolić, Nina and Nikolic, Miroslav and Li, Tingqiang and Peng, Hongyun and Liang, Yongchao",
year = "2023",
abstract = "Trivalent chromium [Cr(III)] is a threat to the environment and crop production. Silicon (Si) has been shown to be effective in mitigating Cr(III) toxicity in rice. However, the mechanisms by which Si reduces Cr(III) uptake in rice are unclear. Herein, we hypothesized that the ability of Si to obstruct Cr(III) diffusion via apoplastic bypass is related to silicic acid polymerization, which may be affected by Cr(III) in rice roots. To test this hypothesis, we employed hydroponics experiments on rice (Oryza sativa L.) and utilized apoplastic bypass tracer techniques, as well as model simulations, to investigate 1) the effect of Si on Cr(III) toxicity and its obstruction capacity via apoplastic bypass, 2) the effect of Cr(III) on silicic acid polymerization, and 3) the relationship between the degree of silicic acid polymerization and its Cr(III) obstruction capacity. We found that Si reversed the damage caused by Cr(III) stress in rice. Si exerted an obstruction effect in the apoplast, significantly decreasing the share of Cr(III) uptake via the apoplastic bypass from 18% to 11%. Moreover, Cr(III) reduced silica particles' radii and increased Si concentration in roots. Modeling revealed that a 5-fold reduction in their radii decreased the diffusion of Cr(III) in apoplast by approximately 17%. We revealed that Cr(III) promoted silicic acid polymerization, resulting in the formation of a higher number of Si particles with a smaller radius in roots, which in turn increased the ability of Si to obstruct Cr(III) diffusion. This negative feedback regulatory mechanism is novel and crucially important for maintaining homeostasis in rice, unveiling the unique role of Si under Cr(III) ion stress and providing a theoretical basis for promoting the use of Si fertilizer in the field.",
publisher = "Elsevier",
journal = "Journal of Hazardous Materials",
title = "From promoting aggregation to enhancing obstruction: A negative feedback regulatory mechanism of alleviation of trivalent chromium toxicity by silicon in rice",
pages = "131720",
volume = "457",
doi = "doi.org/10.1016/j.jhazmat.2023.131720"
}

Pang, Z., Mei, Y., Nikolić, N., Nikolic, M., Li, T., Peng, H.,& Liang, Y.. (2023). From promoting aggregation to enhancing obstruction: A negative feedback regulatory mechanism of alleviation of trivalent chromium toxicity by silicon in rice. in Journal of Hazardous Materials
Elsevier., 457, 131720.
https://doi.org/doi.org/10.1016/j.jhazmat.2023.131720

Pang Z, Mei Y, Nikolić N, Nikolic M, Li T, Peng H, Liang Y. From promoting aggregation to enhancing obstruction: A negative feedback regulatory mechanism of alleviation of trivalent chromium toxicity by silicon in rice. in Journal of Hazardous Materials. 2023;457:131720.
doi:doi.org/10.1016/j.jhazmat.2023.131720 .

Pang, Zhihao, Mei, Yuchao, Nikolić, Nina, Nikolic, Miroslav, Li, Tingqiang, Peng, Hongyun, Liang, Yongchao, "From promoting aggregation to enhancing obstruction: A negative feedback regulatory mechanism of alleviation of trivalent chromium toxicity by silicon in rice" in Journal of Hazardous Materials, 457 (2023):131720,
https://doi.org/doi.org/10.1016/j.jhazmat.2023.131720 . .

TY  - JOUR
AU  - Li, Wenjuan
AU  - Tan, Li
AU  - Zhang, Nan
AU  - Chen, Hao
AU  - Fan, Xiaoping
AU  - Peng, Miao
AU  - Ye, Mujun
AU  - Yan, Guochao
AU  - Peng, Hongyun
AU  - Nikolić, Nina
AU  - Liang, Yongchao
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2096
AB  - Zizania latifolia is a wild rice that contains phytoliths (Phyt) that have considerable potential for carbon sequestration. We hypothesized that the capacity of phytolith-occluded carbon (PhytOC) sequestration in residues might increase by 20%, and economic profit would be twice as high under a rice/single-season Z. latifolia rotation as under rice mono- culture. To test this hypothesis, we collected rice and Z. latifolia plants and their corresponding soil samples from Zhejiang Province to determine the ability of both crops to fix carbon in the phytoliths. We showed that the soil con- centrations of available Si, total carbon (Ctot) and total nitrogen (Ntot) were highly positively correlated with the con- centrations of phytoliths and phytolith-occluded carbon in the residues of both crops. The cold waterlogged paddy fields in China have low productivity but their environmental conditions are suitable for planting Z. latifolia. Our model scenario, built on secondary data, demonstrated that, on a national basis, if the cold waterlogged paddy fields (occupying approximately 15% of the total paddy fields) were under rice/single-season Z. latifolia rotation, the con- tents of phytoliths and PhytOC in rice and Z. latifolia residues would be up to 19.46 × 106 t yr−1 and 8.82 × 104 t yr−1 (0.32 Tg CO2 yr−1), respectively. As a result, the economic benefit would be increased by 1.12 × 1011 USD per year compared to rice monoculture. Therefore, adopting rotational cropping of rice with single-season Z. latifolia will not only increase the content of PhytOC sequestration in residues and improve cold waterlogged paddy fields but also bring economic benefits to farmers.
PB  - Elsevier
T2  - Science of the Total Environment
T1  - Phytolith-occluded carbon in residues and economic benefits under rice/ single-season Zizania latifolia rotation
IS  - 836
SP  - 155504
DO  - 10.1016/j.scitotenv.2022.155504
ER  - 

@article{
author = "Li, Wenjuan and Tan, Li and Zhang, Nan and Chen, Hao and Fan, Xiaoping and Peng, Miao and Ye, Mujun and Yan, Guochao and Peng, Hongyun and Nikolić, Nina and Liang, Yongchao",
year = "2022",
abstract = "Zizania latifolia is a wild rice that contains phytoliths (Phyt) that have considerable potential for carbon sequestration. We hypothesized that the capacity of phytolith-occluded carbon (PhytOC) sequestration in residues might increase by 20%, and economic profit would be twice as high under a rice/single-season Z. latifolia rotation as under rice mono- culture. To test this hypothesis, we collected rice and Z. latifolia plants and their corresponding soil samples from Zhejiang Province to determine the ability of both crops to fix carbon in the phytoliths. We showed that the soil con- centrations of available Si, total carbon (Ctot) and total nitrogen (Ntot) were highly positively correlated with the con- centrations of phytoliths and phytolith-occluded carbon in the residues of both crops. The cold waterlogged paddy fields in China have low productivity but their environmental conditions are suitable for planting Z. latifolia. Our model scenario, built on secondary data, demonstrated that, on a national basis, if the cold waterlogged paddy fields (occupying approximately 15% of the total paddy fields) were under rice/single-season Z. latifolia rotation, the con- tents of phytoliths and PhytOC in rice and Z. latifolia residues would be up to 19.46 × 106 t yr−1 and 8.82 × 104 t yr−1 (0.32 Tg CO2 yr−1), respectively. As a result, the economic benefit would be increased by 1.12 × 1011 USD per year compared to rice monoculture. Therefore, adopting rotational cropping of rice with single-season Z. latifolia will not only increase the content of PhytOC sequestration in residues and improve cold waterlogged paddy fields but also bring economic benefits to farmers.",
publisher = "Elsevier",
journal = "Science of the Total Environment",
title = "Phytolith-occluded carbon in residues and economic benefits under rice/ single-season Zizania latifolia rotation",
number = "836",
pages = "155504",
doi = "10.1016/j.scitotenv.2022.155504"
}

Li, W., Tan, L., Zhang, N., Chen, H., Fan, X., Peng, M., Ye, M., Yan, G., Peng, H., Nikolić, N.,& Liang, Y.. (2022). Phytolith-occluded carbon in residues and economic benefits under rice/ single-season Zizania latifolia rotation. in Science of the Total Environment
Elsevier.(836), 155504.
https://doi.org/10.1016/j.scitotenv.2022.155504

Li W, Tan L, Zhang N, Chen H, Fan X, Peng M, Ye M, Yan G, Peng H, Nikolić N, Liang Y. Phytolith-occluded carbon in residues and economic benefits under rice/ single-season Zizania latifolia rotation. in Science of the Total Environment. 2022;(836):155504.
doi:10.1016/j.scitotenv.2022.155504 .

Li, Wenjuan, Tan, Li, Zhang, Nan, Chen, Hao, Fan, Xiaoping, Peng, Miao, Ye, Mujun, Yan, Guochao, Peng, Hongyun, Nikolić, Nina, Liang, Yongchao, "Phytolith-occluded carbon in residues and economic benefits under rice/ single-season Zizania latifolia rotation" in Science of the Total Environment, no. 836 (2022):155504,
https://doi.org/10.1016/j.scitotenv.2022.155504 . .