Factors influencing the uptake and speciation transformation of antimony in the soil-plant system, and the redistribution and toxicity of antimony in plants

Zhu, Yanming; Yang, JiGang; Wang, Lizhen; Lin, Ziting; Dai, Jiaxin; Wang, RenJie; Yu, Yan; Hong, Liu; Rensing, Christopher; Feng, Renwei

doi:10.1016/j.scitotenv.2020.140232

Cited by 40 publications

(12 citation statements)

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“…It is possible that this factor could be related to the maintenance of photosynthetic pigment levels that can maintain EF under these toxic conditions, especially in the case of 0.5 mM Sb. The decrease in Fe and Cu content was clear and coincides with the decreases observed by other workers [ 1 , 14 , 94 ]. In tomato, Sb induces a decrease in Fe and Zn content, with increases in Mg and Cu [ 38 ].…”

Section: Discussionsupporting

confidence: 91%

“…The behaviour of Mn was different. It declined in roots, as also observed by Zhu et al [ 14 ] in rice and by Espinosa-Vellarino et al [ 17 ] in tomato, but it remained basically unchanged in leaves, with just slight fluctuations, and this, together with the lower decrease in the Mg content of leaves, might contribute to maintaining the EF. This result is similar to that described by Rodríguez-Ruíz et al [ 95 ] who observed decreases in the content of Mg and Mn in roots but not in leaves of pea plants subjected to As toxicity.…”

Section: Discussionsupporting

confidence: 73%

“…Nonetheless, the P content was unaltered. Shtangeeva et al [ 93 ] describe a decrease in Ca and K content under Sb toxicity, while Zhu et al [ 14 ] describe the decrease in K content but an increase in Ca content. Mg content decreases in roots [ 14 , 17 ], but the decrease was much lower in leaves, observing a TF for this element much greater than that of the control.…”

Section: Discussionmentioning

confidence: 99%

“…Shtangeeva et al [ 93 ] describe a decrease in Ca and K content under Sb toxicity, while Zhu et al [ 14 ] describe the decrease in K content but an increase in Ca content. Mg content decreases in roots [ 14 , 17 ], but the decrease was much lower in leaves, observing a TF for this element much greater than that of the control. It is possible that this factor could be related to the maintenance of photosynthetic pigment levels that can maintain EF under these toxic conditions, especially in the case of 0.5 mM Sb.…”

Section: Discussionmentioning

confidence: 99%

“…Sb is not an essential element for plants, but they can absorb and transport it [ 11 ]. Plants’ capacity to absorb this metalloid depends on which different species of Sb are in the soil and their bioavailability, as well as on the plant species itself [ 12 , 13 , 14 ]. If Sb absorption is high, toxicity problems result in reduced growth, impaired absorption of other mineral elements, slowed photosynthesis, development of oxidative stress, etc.…”

Section: Introductionmentioning

confidence: 99%

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Response to Antimony Toxicity in Dittrichia viscosa Plants: ROS, NO, H2S, and the Antioxidant System

et al. 2021

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Dittrichia viscosa plants were grown hydroponically with different concentrations of Sb. There was preferential accumulation of Sb in roots. Fe and Cu decreased, while Mn decreased in roots but not in leaves. Chlorophyll content declined, but the carotenoid content increased, and photosynthetic efficiency was unaltered. O2●− generation increased slightly, while lipid peroxidation increased only in roots. H2O2, NO, ONOO−, S-nitrosothiols, and H2S showed significant increases, and the enzymatic antioxidant system was altered. In roots, superoxide dismutase (SOD) and monodehydroascorbate reductase (MDAR) activities declined, dehydroscorbate reductase (DHAR) rose, and ascorbate peroxidase (APX), peroxidase (POX), and glutathione reductase (GR) were unaffected. In leaves, SOD and POX increased, MDAR decreased, and APX was unaltered, while GR increased. S-nitrosoglutathione reductase (GSNOR) and l-cysteine desulfhydrilase (l-DES) increased in activity, while glutathione S-transferase (GST) decreased in leaves but was enhanced in roots. Components of the AsA/GSH cycle decreased. The great capacity of Dittrichia roots to accumulate Sb is the reason for the differing behaviour observed in the enzymatic antioxidant systems of the two organs. Sb appears to act by binding to thiol groups, which can alter free GSH content and SOD and GST activities. The coniferyl alcohol peroxidase activity increased, possibly to lignify the roots’ cell walls. Sb altered the ROS balance, especially with respect to H2O2. This led to an increase in NO and H2S acting on the antioxidant system to limit that Sb-induced redox imbalance. The interaction NO, H2S and H2O2 appears key to the response to stress induced by Sb. The interaction between ROS, NO, and H2S appears to be involved in the response to Sb.

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