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Silicon Reduces Aluminum-Induced Suberization by Inhibiting the Uptake and Transport of Aluminum in Rice Roots and Consequently Promotes Root Growth

Authorized Users Only
2022
Authors
Xiao, Zhuoxi
Ye, Mujun
Gao, Zixiang
Jiang, Yishun
Zhang, Xinyuan
Nikolić, Nina
Liang, Yongchao
Article (Published version)
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Abstract
Silicon (Si) can alleviate aluminum (Al) toxicity in rice (Oryza sativa L.), but the mechanisms underlying this beneficial effect have not been elucidated, especially under long-term Al stress. Here, the effects of Al and Si on the suberization and development of rice roots were investigated. The results show that, as the Al exposure time increased, the roots accumulated more Al, and Al enhanced the deposition of suberin in roots, both of which ultimately inhibited root growth and nutrient absorption. However, Si restricted the apoplastic and symplastic pathways of Al in roots by inhibiting the uptake and transport of Al, thereby reducing the accumulation of Al in roots. Meanwhile, the Si-induced drop in Al concentration reduced the suberization of roots caused by Al through down-regulating the expression of genes related to suberin synthesis and then promoted the development of roots (such as longer and more adventitious roots and lateral roots). Moreover, Si also increased nutrient u...ptake by Al-stressed roots and thence promoted the growth of rice. Overall, these results indicate that Si reduced Al-induced suberization of roots by inhibiting the uptake and transport of Al in roots, thereby amending root growth and ultimately alleviating Al stress in rice. Our study further clarified the toxicity mechanism of Al in rice and the role of Si in reducing Al content and restoring root development under Al stress.

Keywords:
Suberization / Silicon / Root morphology / Rice / Nutrient uptake / Aluminum
Source:
Plant and Cell Physiology, 2022, 63, 3, 340-352
Publisher:
  • Oxford Univ Press, Oxford
Funding / projects:
  • National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31772387]

DOI: 10.1093/pcp/pcac001

ISSN: 0032-0781

PubMed: 34981810

WoS: 000757952200001

Scopus: 2-s2.0-85126389546
[ Google Scholar ]
1
URI
http://rimsi.imsi.bg.ac.rs/handle/123456789/1527
Collections
  • Radovi istraživača / Researchers’ publications
Institution/Community
Institut za multidisciplinarna istraživanja
TY  - JOUR
AU  - Xiao, Zhuoxi
AU  - Ye, Mujun
AU  - Gao, Zixiang
AU  - Jiang, Yishun
AU  - Zhang, Xinyuan
AU  - Nikolić, Nina
AU  - Liang, Yongchao
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1527
AB  - Silicon (Si) can alleviate aluminum (Al) toxicity in rice (Oryza sativa L.), but the mechanisms underlying this beneficial effect have not been elucidated, especially under long-term Al stress. Here, the effects of Al and Si on the suberization and development of rice roots were investigated. The results show that, as the Al exposure time increased, the roots accumulated more Al, and Al enhanced the deposition of suberin in roots, both of which ultimately inhibited root growth and nutrient absorption. However, Si restricted the apoplastic and symplastic pathways of Al in roots by inhibiting the uptake and transport of Al, thereby reducing the accumulation of Al in roots. Meanwhile, the Si-induced drop in Al concentration reduced the suberization of roots caused by Al through down-regulating the expression of genes related to suberin synthesis and then promoted the development of roots (such as longer and more adventitious roots and lateral roots). Moreover, Si also increased nutrient uptake by Al-stressed roots and thence promoted the growth of rice. Overall, these results indicate that Si reduced Al-induced suberization of roots by inhibiting the uptake and transport of Al in roots, thereby amending root growth and ultimately alleviating Al stress in rice. Our study further clarified the toxicity mechanism of Al in rice and the role of Si in reducing Al content and restoring root development under Al stress.
PB  - Oxford Univ Press, Oxford
T2  - Plant and Cell Physiology
T1  - Silicon Reduces Aluminum-Induced Suberization by Inhibiting the Uptake and Transport of Aluminum in Rice Roots and Consequently Promotes Root Growth
EP  - 352
IS  - 3
SP  - 340
VL  - 63
DO  - 10.1093/pcp/pcac001
ER  - 
@article{
author = "Xiao, Zhuoxi and Ye, Mujun and Gao, Zixiang and Jiang, Yishun and Zhang, Xinyuan and Nikolić, Nina and Liang, Yongchao",
year = "2022",
abstract = "Silicon (Si) can alleviate aluminum (Al) toxicity in rice (Oryza sativa L.), but the mechanisms underlying this beneficial effect have not been elucidated, especially under long-term Al stress. Here, the effects of Al and Si on the suberization and development of rice roots were investigated. The results show that, as the Al exposure time increased, the roots accumulated more Al, and Al enhanced the deposition of suberin in roots, both of which ultimately inhibited root growth and nutrient absorption. However, Si restricted the apoplastic and symplastic pathways of Al in roots by inhibiting the uptake and transport of Al, thereby reducing the accumulation of Al in roots. Meanwhile, the Si-induced drop in Al concentration reduced the suberization of roots caused by Al through down-regulating the expression of genes related to suberin synthesis and then promoted the development of roots (such as longer and more adventitious roots and lateral roots). Moreover, Si also increased nutrient uptake by Al-stressed roots and thence promoted the growth of rice. Overall, these results indicate that Si reduced Al-induced suberization of roots by inhibiting the uptake and transport of Al in roots, thereby amending root growth and ultimately alleviating Al stress in rice. Our study further clarified the toxicity mechanism of Al in rice and the role of Si in reducing Al content and restoring root development under Al stress.",
publisher = "Oxford Univ Press, Oxford",
journal = "Plant and Cell Physiology",
title = "Silicon Reduces Aluminum-Induced Suberization by Inhibiting the Uptake and Transport of Aluminum in Rice Roots and Consequently Promotes Root Growth",
pages = "352-340",
number = "3",
volume = "63",
doi = "10.1093/pcp/pcac001"
}
Xiao, Z., Ye, M., Gao, Z., Jiang, Y., Zhang, X., Nikolić, N.,& Liang, Y.. (2022). Silicon Reduces Aluminum-Induced Suberization by Inhibiting the Uptake and Transport of Aluminum in Rice Roots and Consequently Promotes Root Growth. in Plant and Cell Physiology
Oxford Univ Press, Oxford., 63(3), 340-352.
https://doi.org/10.1093/pcp/pcac001
Xiao Z, Ye M, Gao Z, Jiang Y, Zhang X, Nikolić N, Liang Y. Silicon Reduces Aluminum-Induced Suberization by Inhibiting the Uptake and Transport of Aluminum in Rice Roots and Consequently Promotes Root Growth. in Plant and Cell Physiology. 2022;63(3):340-352.
doi:10.1093/pcp/pcac001 .
Xiao, Zhuoxi, Ye, Mujun, Gao, Zixiang, Jiang, Yishun, Zhang, Xinyuan, Nikolić, Nina, Liang, Yongchao, "Silicon Reduces Aluminum-Induced Suberization by Inhibiting the Uptake and Transport of Aluminum in Rice Roots and Consequently Promotes Root Growth" in Plant and Cell Physiology, 63, no. 3 (2022):340-352,
https://doi.org/10.1093/pcp/pcac001 . .

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