Exogenous Glycinebetaine Reduces Cadmium Uptake and Mitigates Cadmium Toxicity in Two Tobacco Genotypes Differing in Cadmium Tolerance

He, Xiaoyan; Richmond, Marvin Eusi Ambrose; Williams, Darron V.; Zheng, Weite; Wu, Feibo

doi:10.3390/ijms20071612

Cited by 40 publications

(22 citation statements)

References 39 publications

(46 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Previous studies showed that Se can enhance the enzymatic and non-enzymatic anti-oxidation systems and improve plant resistance to abiotic stresses in plants [4,5,6,7]. To determine the function of Se under Cd stress conditions, we measured the antioxidant capacity and chlorophyll content of tobacco.…”

Section: Resultsmentioning

confidence: 99%

“…Cd is not needed for plant growth and development but is more likely to accumulate in plants than other heavy metals [3]. Evidence suggests that a high concentration of Cd in soil affects the growth and development of plants through physiological and biochemical processes, including inhibition of plant enzyme and membrane activity [4], decreased cell division [5], reduced growth rate [6], damaged photosynthesis [7], inhibition of stomatal opening [8], and promotion of lipid peroxidation [9]. Cd bioaccumulates and in humans can cause diseases such as osteoporosis, anemia, hypertension, and kidney damage.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Selenium Modulates the Level of Auxin to Alleviate the Toxicity of Cadmium in Tobacco

Luo

Wei

Sun

et al. 2019

IJMS

View full text Add to dashboard Cite

Cadmium (Cd) is an environmental pollutant that potentially threatens human health worldwide. Developing approaches for efficiently treating environmental Cd is a priority. Selenium (Se) plays important role in the protection of plants against various abiotic stresses, including heavy metals. Previous research has shown that Se can alleviate Cd toxicity, but the molecular mechanism is still not clear. In this study, we explore the function of auxin and phosphate (P) in tobacco (Nicotiana tabacum), with particular focus on their interaction with Se and Cd. Under Cd stress conditions, low Se (10 μM) significantly increased the biomass and antioxidant capacity of tobacco plants and reduced uptake of Cd. We also measured the auxin concentration and expression of auxin-relative genes in tobacco and found that plants treated with low Se (10 μM) had higher auxin concentrations at different Cd supply levels (0 μM, 20 μM, 50 μM) compared with no Se treatment, probably due to increased expression of auxin synthesis genes and auxin efflux carriers. Overexpression of a high affinity phosphate transporter NtPT2 enhanced the tolerance of tobacco to Cd stress, possibly by increasing the total P and Se content and decreasing Cd accumulation compared to that in the wild type (WT). Our results show that there is an interactive mechanism among P, Se, Cd, and auxin that affects plant growth and may provide a new approach for relieving Cd toxicity in plants.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Selenium Modulates the Level of Auxin to Alleviate the Toxicity of Cadmium in Tobacco

Luo

Wei

Sun

et al. 2019

IJMS

View full text Add to dashboard Cite

show abstract

“…27-28). It might be due to increased Cr (VI) uptake and decreased nutrients uptake under Cr (VI) toxicity as reported by He et al (2019), while studying the effect of Cd in tobacco plants.…”

Section: Antioxidative Metabolitesmentioning

confidence: 79%

Exogenous AMF with Glycine Betaine Reduces Cr (VI) Uptake and Alleviates Chromium Toxicity by Supressing the Oxidative Stress in Three Genetically Different Sorghum (Sorghum bicolor L.) Cultivars

Prabhash¹

2020

Preprint

View full text Add to dashboard Cite

Background: Chromium is most toxic pollutant that negatively affects plant’s metabolic activities and yield. It reduces plant growth by influencing the antioxidant defense system’s activities. The aim of the present research was to examine the ameliorative capability of exogenous GB and AMF spiked in soil, either individually or in combination against Cr toxicity. The ameliorative effects were studied in terms of Cr uptake, grain yield, antioxidative defense system parameters (viz. enzymes – SOD, APX, CAT, GR, POX and metabolites – proline, glutathione, ascorbate, β-carotene) and indices of oxidative stress parameters (viz. PPO, H2O2, and MDA). Results:The results delineated that Cr uptake and indices of oxidative stress were increased with increasing concentration of Cr stress in all the varieties (HJ 541, HJ513 & SSG 59-3) at both the growth stages (35 & 95 DAS). At higher concentration (4 ppm), Cr stress decreased the grain yield (45-50%) as compared with controls. PPO activity, MDA and H2O2 content increased at both growth stages in all the varieties. However, antioxidative enzymes and metabolite activities increased due to Cr stress but this increase was not sufficient to counteract with ROS generated under Cr stress which was enhanced on the application of AMF and GB either individually or in combination (spiked in soil). It decreased the indices of oxidative stress and ameliorated the Cr toxicity and increased grain yield (65-70%) in all the varieties. Conclusions:Both GB and AMF, improved the plant growth and stress tolerance capacity of the plant. GB at both 50 and 100 mM level, significantly ameliorated Cr (VI) toxicity. However, AMF concomitantly with GB further boost up the amelioration behavior of the plant against Cr toxicity, at both growth stages in all the varieties. The combination of 100 mM GB with 10 g AMF was observed most effective among all the treatments. Among the varieties SSG 59-3 had the lowest chromium uptake, indices of oxidative stress, and highest antioxidative system’s activity as compared to HJ 513 followed by HJ 541 variety. Thus AMF and GB either individually or in combination may be used to maintain plant yield attributes under Cr toxicity.

show abstract

“…The reason behind promotive role of GB and AMF towards antioxidants activities might be the inhibition of Cr absorption and increased nutrient absorption as studied by Jabeen et al [44] in mung bean under Cr toxicity. Moreover, GB itself acts as compatible solutes and AMF helps in accumulation of them that functions as osmoprotectants and counteracts the oxidative stress by elevating the levels of antioxidant enzymes and metabolites [45]. Hisyam et al [46] have also reported increased antioxidant system activities on exogenous GB application to counteract the stress caused by water defciency in rice plants.…”

Section: Discussionmentioning

confidence: 99%

Title: The Cumulative Dose of AMF and GB is More Effective in The Amelioration of Cr(VI) Toxicity in Sorghum (Sorghum Bicolor L.) Than Individually

Kumar

2021

Preprint

View full text Add to dashboard Cite

Industrial and anthropogenic activities are the major source of heavy metal toxicants in agricultural soils. Among, heavy metal toxicants, hexavalent chromium is the most toxic toxicant that negatively affects plant’s metabolic activities and yield. It reduces the plant growth and development by influencing the antioxidant defence system’s activities. In the present experiment, two different soil applied dozes of GB viz. 50 and 100mM, and AMF, both individually and in combination were tested for their capability to ameliorate Cr toxicity in sorghum. The promotive behaviour of these treatments for antioxidant defence system was analysed at vegetative (35 DAS) and grain filling stage (95 DAS) in three varieties of sorghum viz. SSG 59-3, HJ 513 (multi-cut) and HJ 541 (single-cut) under 2 and 4 ppm Cr toxicity. At the same time resultant effects of this behaviour on Cr accumulation, grain yield and indices of oxidative stress was also studied. In this experiment antioxidant defence system includes enzymes viz. SOD, APX, CAT, GR, POD and metabolites viz. glutathione, ascorbate, proline, β-carotene and indices of oxidative stress includes parameters viz. PPO, H2O2 and MDA. The results delineated that Cr accumulation and indices of oxidative stress were increased with increasing concentration of Cr stress in all the varieties at both growth stages. Chromium stress at high concentration (4 ppm), decreased the grain yield (71.69 %) as compared with control. Due to 4 ppm Cr stress, PPO activity, MDA and H2O2 accumulation increased significantly (72.29 %, 73.15 %, 79 % respectively, at 35 DAS and 70.36 %, 74.78 %, 79.83 % respectively, at 95 DAS). GB and AMF individually increased antioxidant activity but in combination, further significantly increased antioxidant defence system’s activity which in turn decreased indices of oxidative stress and reduced the Cr toxicity and increased grain yield of sorghum in all varieties at both the growth stages. However, treatment of 100mM GB with AMF was observed most significant in decreasing oxidative stress and improved antioxidant system’s activities and grain yield as compared with all other treatments at both growth stages in all the varieties. SSG 59-3 cultivar showed lowest chromium content (1.60 and 8.61 ppm), indices of oxidative stress and highest antioxidant system’s activity as compared to HJ 513 followed by HJ 541 variety, at 35 and 95 DAS respectively. Thus, among the varieties SSG 59-3 was found most tolerant as compared to HJ 513 followed by HJ 541 variety. These findings suggest that both GB and AMF, either individually or combined can play a positive role to reduce oxidative stress and increased yield attributes under Cr toxicity in sorghum.

show abstract

Exogenous Glycinebetaine Reduces Cadmium Uptake and Mitigates Cadmium Toxicity in Two Tobacco Genotypes Differing in Cadmium Tolerance

Cited by 40 publications

References 39 publications

Selenium Modulates the Level of Auxin to Alleviate the Toxicity of Cadmium in Tobacco

Selenium Modulates the Level of Auxin to Alleviate the Toxicity of Cadmium in Tobacco

Exogenous AMF with Glycine Betaine Reduces Cr (VI) Uptake and Alleviates Chromium Toxicity by Supressing the Oxidative Stress in Three Genetically Different Sorghum (Sorghum bicolor L.) Cultivars

Title: The Cumulative Dose of AMF and GB is More Effective in The Amelioration of Cr(VI) Toxicity in Sorghum (Sorghum Bicolor L.) Than Individually

Contact Info

Product

Resources

About