Silicon Reduces Aluminum-Induced Suberization by Inhibiting the Uptake and Transport of Aluminum in Rice Roots and Consequently Promotes Root Growth
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2022
Authors
Xiao, ZhuoxiYe, Mujun
Gao, Zixiang
Jiang, Yishun
Zhang, Xinyuan
Nikolić, Nina

Liang, Yongchao
Article (Published version)

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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 / AluminumSource:
Plant and Cell Physiology, 2022, 63, 3, 340-352Publisher:
- 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
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Institut za multidisciplinarna istraživanjaTY - 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 . .