Growth, photosynthesis, and defense mechanism of antimony (Sb)-contaminated Boehmeria nivea L.

Chai, Liyuan; Mubarak, Hussani; Yang, Zhihui; Wang, Yong; Tang, Chong–Jian; Mirza, Nosheen

doi:10.1007/s11356-015-5987-0

Cited by 60 publications

(26 citation statements)

References 65 publications

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“…These findings are similar to the results described by Pan et al [ 19 ] for maize, and are characteristic symptoms of heavy metal toxicity [ 67 , 68 ]. Also observed was preferential accumulation of the absorbed Sb in the roots, consistent with very low TF values in non-Sb-accumulating plants [ 42 , 44 , 65 , 69 ]. This reduced root development may be due to an alteration in the elongation of the cells located in the root elongation zone, as can be seen in the longitudinal fluorescence microscopy images (data no show).…”

Section: Discussionmentioning

confidence: 55%

“…Also, Feng et al [ 81 ] and Zayneb et al [ 72 ] obtained higher lipid peroxidation levels despite of the increased antioxidant activity in response to other heavy metals. On the contrary, Chai et al [ 65 ] obtained results that show sharp declines in SOD, peroxidase and catalase activities.…”

Section: Discussionmentioning

confidence: 99%

“…The decrease in biomass production due to Sb toxicity has been described in various plants [ 44 , 63 – 65 ] as also for other heavy metals such as Cd [ 66 ]. In all the cases, fresh weight, dry weight, and total biomass production were reduced, as also was the length of the root system.…”

Section: Discussionmentioning

confidence: 99%

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Effects of antimony on redox activities and antioxidant defence systems in sunflower (Helianthus annuus L.) plants

et al. 2017

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The alterations induced by the toxicity of antimony (Sb) in the roots and leaves of sunflower plants were determined. The plants were grown hydroponically with different concentrations of Sb, a heavy metal which reduces biomass production and growth. There was preferential accumulation of Sb in the tissues of the roots, with the concentrations in the leaves being much lower. The accumulation of other mineral elements was also altered, especially that of Fe and Zn. Chlorophyll content declined, as also did the photosynthetic efficiency, but the carotenoid content remained unaltered. The total content of phenolics, flavonoids, and phenylpropanoid glycosides rose, evidence of their participation in the defence response. Increases were observed in the amount of superoxide anion in both roots and leaves, and in lipid peroxidation levels, especially with the highest Sb concentration of 1.0 mM. The induced oxidative stress leads to a strong increase in the SOD, POX and APX antioxidant activities, while the GR activity was only increased in the leaves and at the 1.0 mM Sb concentration. In contrast, the DHAR activity increased considerably in both organs. The GSNOR activity increased only in roots, and the total RSNOs increased. The total amount of AsA + DHA increased in roots and remained unaltered in leaves, whereas that of GSH + GSSG decreased considerably in all cases. As a whole, these results are evidence for the development of a strong oxidative stress induced by Sb, with there being a clear imbalance in the content of the compounds that constitute the AsA/GSH cycle. 0.5 mM Sb enhances GST expression, especially in leaves. This, together with the increase that was observed in the amount of GSH, may play an important part in detoxification. This oxidative stress affects both the phenolic and the ROS/RNS metabolic processes, which seems to implicate their involvement in the plant's defence and response to the stress.

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Section: Discussionmentioning

confidence: 55%

Section: Discussionmentioning

confidence: 99%

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Effects of antimony on redox activities and antioxidant defence systems in sunflower (Helianthus annuus L.) plants

et al. 2017

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“…PSII was confirmed as an important site of photoinhibition, but its light use efficiency can be reduced by drought/flooding, heavy metals, saline or other stress factors, and there by the plants were injured by photoinhibition. As reported, the chlorophyll fluorescence parameters of Ramie ( Boehmeria nivea L.) including F v /F m and Φ PSII were not significantly changed under Sb stress (20–200 mg⋅L -1 ) (Chai et al, 2016), but were significantly reduced under salty or drought stress (Huang et al, 2013). The maximum photochemical quantum yield (F v /F m ) of maize under Sb stress (50–1000 mg⋅kg -1 soil) declined (Zhang et al, 2017).…”

Section: Discussionmentioning

confidence: 76%

Effects of Antimony Stress on Photosynthesis and Growth of Acorus calamus

et al. 2018

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This study was aimed to explore that effects of Sb on physiological parameters of Acorus calamus and the possibility of using A. calamus as a remediation plant. A. calamus potted experiments were conducted using different concentrations (0, 250, 500, 1000, and 2000 mg/kg) of antimony potassium tartrate (Sb3+) (marked as CK, T1, T2, T3, and T4, respectively) and potassium pyroantimonate (Sb5+) (marked as CK, T′1, T′2, T′3, and T′4, respectively). The effects of Sb stress (Sb3+ and Sb5+) on leaf photosynthetic pigments, biomass, photosynthetic characteristics and chlorophyll fluorescence parameters of potted A. calamus were studied. With the rise of Sb3+ concentration from T1 to T4, the leaf pigment contents (chlorophyll a, b, carotenoid), plant height, dry weight, net photosynthetic rate (Pn), stomatal conductance (Gs), evaporation rate (E), PSII maximum photochemical efficiency (Fv/Fm), and PSII electron transfer quantum yield rate (ΦPSII) of A. calamus all reduced, while intercellular CO2 concentration (Ci) significantly increased. The reduction of Pn was mainly induced by non-stomatal limitation. Chlorophyll a/b ratio increased significantly versus the control, while carotenoid/chlorophyll ratio (Car/Chl) first decreased and then increased. The leaf Chl a, Chl b, Car, plant height, dry weight, Pn, Gs, E, Fv/Fm, and ΦPSII all maximized in T′1 (250 mg/kg), but were not significantly different from the control. As the Sb5+ concentration increased from T′2 to T′4, the above indices all decreased and were significantly different from the control. Moreover, intercellular CO2 concentration (Ci) decreased significantly. The reduction of Pn was caused by non-stomatal limitation, indicating the mesophyll cells were damaged. The Car/Chl ratio was stable within 0–500 mg/kg Sb, but decreased in T3 and T4, and rose in T′3 and T′4. After Sb3+ and Sb5+ treatments, translocation factor varied 19.44–27.8 and 19.44–24.86%, respectively. In conclusion, different form Sb3+ treatment, Sb5+ treatment showed a Hormesi effect, as low-concentration treatment promoted A. calamus growth, but high-concentration treatment inhibited its growth. The two forms of Sb both caused unfavorable effects on A. calamus, but the seedlings did not die and were modestly adaptive and Sb-accumulative. A. calamus, which is easily maintained and cultivated, can serve as a good candidate for phytoremediation of water contaminated with Sb.

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“…In barley, activities of GS, GOGAT, and GDH in the root or leaf of plantlets increased with increasing N-content (0–2 mmol L -1 ) under hydroponic culture, and varieties with high NUE had higher GS, GOGAT, and GDH activities (Jawad et al, 2017). Fluorescence indicators, which are dramatically affected under biotic or abiotic stresses, are usually regarded as indicators of stress tolerance (Chai et al, 2016). It was reported that the chlorophyll content (Kumara and Bandara, 2001), photosynthesis (Meinzer and Zhu, 1998; Kumara and Bandara, 2001), maximal photochemical efficiency (Meinzer and Zhu, 1998), N content and biomass (Kumara and Bandara, 2001) decreased significantly in sugarcane under a low N supply.…”

Section: Discussionmentioning

confidence: 99%

The Physiological and Agronomic Responses to Nitrogen Dosage in Different Sugarcane Varieties

et al. 2019

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Nitrogen (N) is very important for sugarcane yield improvement, but the excessive application of N fertilizer brings about N pollution and a cost increase. Through distinguishing the difference of nitrogen use efficiency (NUE), we can reasonably apply N fertilizer according to the NUE characteristics of sugarcane varieties, and thus reduce N loss and maintain high yield. The present study showed the pot experiment results of identifying NUE types of nine main sugarcane varieties in the main sugarcane producing areas of China under controlled conditions, and identified the key physiological and agronomic indictors which can help to determine the NUE types of sugarcane. The test clones were exposed to varying levels of N fertilizer and 15 parameters that are likely to impact NUE were measured. The key results are (1) Sugarcane variety ROC22 has the high plant dry weight (PDW) and NUE among nine varieties under different N rates, it can take advantages under low N supply (225 kg/hm 2 urea), and less N fertilizer can be applied properly in production. (2) Varieties of GT32 was good performing genotype for PDW and NUE under low N supply (225 kg/hm 2 urea), GT42 was more suitable for moderate N environment (450 kg/hm 2 urea), while YT94-128 was at middle N and high N supply (450–675 kg/hm 2 urea). (3) Late stage of shoot elongation is suitable for differentiating sugarcane clones for NUE. (4) Leaf glutamine synthetase activity is the most reliable predictor of NUE in sugarcane. The result of pot experiment is sufficient to differentiate clonal variation for NUE in sugarcane as it reflects field experimental results. This study can set up a basis for identification the NUE types of sugarcane varieties and the development of reasonable N fertilizer application.

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Growth, photosynthesis, and defense mechanism of antimony (Sb)-contaminated Boehmeria nivea L.

Cited by 60 publications

References 65 publications

Effects of antimony on redox activities and antioxidant defence systems in sunflower (Helianthus annuus L.) plants

Effects of antimony on redox activities and antioxidant defence systems in sunflower (Helianthus annuus L.) plants

Effects of Antimony Stress on Photosynthesis and Growth of Acorus calamus

The Physiological and Agronomic Responses to Nitrogen Dosage in Different Sugarcane Varieties

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