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DOI: 10.1371/journal.pone.0173378
Title:
Effects of silicon on Oryza sativa L. seedling roots under simulated acid rain stress
Author: Shuming Ju; Ningning Yin; Liping Wang; Cuiying Zhang; Yukun Wang
Source Publication: PLOS ONE
ISSN: 1932-6203
Indexed By: SCI-E
Publishing Year: 2017
Date Published: 2017-3-14
Volume: 12, Issue:3
Language: 英语
Keyword: Seedlings ; Rice ; Acid deposition ; Phenotypes ; Superoxide dismutase ; Plant resistance to abiotic stress ; Root growth ; Plant physiology
Subject in Chinese: 吸收 ; 微量营养物/微量元素 ; 酸沉降 ; PH ; 吸附作用 ; PH值
Subject: ABSORPTION ; NUTRIENTS ; ACID DEPOSITION ; PH
English Abstract: Silicon (Si) has an important function in reducing the damage of environmental stress on plants. Acid rain is a serious abiotic stress factor, and Si can alleviate the stress induced by acid rain on plants. Based on these assumptions, we investigated the effects of silicon on the growth, root phenotype, mineral element contents, hydrogen peroxide (H2O2) and antioxidative enzymes of rice (Oryza sativa L.) seedling roots under simulated acid rain (SAR) stress. The results showed that the combined or single effects of Si and/or SAR on rice roots depend on the concentration of Si and the pH of the SAR. The combined or single effects of a low or moderate concentration of Si (1.0 or 2.0 mM) and light SAR (pH 4.0) enhanced the growth of rice roots, and the combined effects were stronger than those of the single treatment. A high concentration of Si (4.0 mM) or severe SAR (pH 2.0) exerted deleterious effects. The incorporation of Si (1.0, 2.0 or 4.0 mM) into SAR with pH 3.0 or 2.0 promoted the rice root growth, decreased the H2O2 content, increased the Si concentration and the superoxide dismutase (SOD), catalase (CAT), peroxidase (POD) and ascorbate peroxidase (APX) activities, maintained the balance of mineral element (K, Ca, Mg, Fe, Zn, and Cu) concentrations in the roots of rice seedlings compared with SAR alone. The alleviatory effects observed with a moderate concentration of Si (2.0 mM) were better than the effects obtained with a low or high concentration of Si (1.0 or 4.0 mM). The observed effects were due to disruptions in the absorption and utilization of mineral nutrients and impacts on the activity of antioxidant enzymes in roots, and this conclusion suggests that the degree of rice root damage caused by acid rain might be attributed to not only acid rain but also the level of Si in the soil.
Related Link: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0173378&type=printable
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被引频次[WOS]:4   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Identifier: http://119.78.100.177/globalchange/handle/2HF3EXSE/25975
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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Affiliation: School of Environment and Spatial Informatics, China University of Mining & Technology, Xuzhou, Jiangsu, China;Xuzhou Institute of Technology, Xuzhou, Jiangsu, China;School of Environment and Spatial Informatics, China University of Mining & Technology, Xuzhou, Jiangsu, China;School of Environment and Spatial Informatics, China University of Mining & Technology, Xuzhou, Jiangsu, China;School of Environment and Spatial Informatics, China University of Mining & Technology, Xuzhou, Jiangsu, China;Xuzhou Institute of Technology, Xuzhou, Jiangsu, China;Xuzhou Institute of Technology, Xuzhou, Jiangsu, China

Recommended Citation:
Shuming Ju,Ningning Yin,Liping Wang,et al. Effects of silicon on Oryza sativa L. seedling roots under simulated acid rain stress[J]. PLOS ONE,2017-01-01,12(3)
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