Application of exogenous glycinebetaine alleviates lead toxicity in pakchoi (Brassica chinensis L.) by promoting antioxidant enzymes and suppressing Pb accumulation

2021 ◽  
Author(s):  
Yu Ji ◽  
Yanfang Ren ◽  
Chuan Han ◽  
Wenjia Zhu ◽  
jinyu Gu ◽  
...  
Keyword(s):  
Antioxidant Enzymes ◽  
Lead Toxicity ◽  
Brassica Chinensis ◽  
Pb Accumulation

scholarly journals Can Ceylon Leadwort (Plumbago zeylanica L.) Acclimate to Lead Toxicity?—Studies of Photosynthetic Apparatus Efficiency

2020 ◽  
Vol 21 (5) ◽  
pp. 1866 ◽  
Author(s):  
Krzysztof M. Tokarz ◽  
Wojciech Makowski ◽  
Barbara Tokarz ◽  
Monika Hanula ◽  
Ewa Sitek ◽  
...  
Keyword(s):  
Antioxidant Enzymes ◽  
Photosynthetic Apparatus ◽  
Chloroplast Ultrastructure ◽  
Lead Toxicity ◽  
Protein Accumulation ◽  
Fluorescence Measurement ◽  
Reaction Centre ◽  
Donor Side ◽  
Plumbago Zeylanica ◽  
Pb Concentration

Ceylon leadwort (Plumbago zeylanica) is ornamental plant known for its pharmacological properties arising from the abundant production of various secondary metabolites. It often grows in lead polluted areas. The aim of presented study was to evaluate the survival strategy of P. zeylanica to lead toxicity via photosynthetic apparatus acclimatization. Shoots of P. zeylanica were cultivated on media with different Pb concentrations (0.0, 0.05, and 0.1 g Pb∙l−1). After a four-week culture, the efficiency of the photosynthetic apparatus of plants was evaluated by Chl a fluorescence measurement, photosynthetic pigment, and Lhcb1, PsbA, PsbO, and RuBisCo protein accumulation, antioxidant enzymes activity, and chloroplast ultrastructure observation. Plants from lower Pb concentration revealed no changes in photosynthetic pigments content and light-harvesting complex (LHCII) size, as well as no limitation on the donor side of Photosystem II Reaction Centre (PSII RC). However, the activity and content of antioxidant enzymes indicated a high risk of limitation on the acceptor side of Photosystem I. In turn, plants from 0.1 g Pb∙l−1 showed a significant decrease in pigments content, LHCII size, the amount of active PSII RC, oxygen-evolving complex activity, and significant remodeling of chloroplast ultrastructure indicated limitation of PSII RC donor side. Obtained results indicate that P. zeylanica plants acclimate to lead toxicity by Pb accumulation in roots and, depending on Pb concentration, by adjusting their photosynthetic apparatus via the activation of alternative (cyclic and pseudocyclic) electron transport pathways.

scholarly journals Glycine betaine-induced lead toxicity tolerance related to elevated photosynthesis, antioxidant enzymes suppressed lead uptake and oxidative stress in cotton

2014 ◽  
Vol 38 ◽  
pp. 281-292 ◽  
Author(s):  
Saima Aslam BHARWANA ◽  
Shafaqat ALI ◽  
Muhammad Ahsan FAROOQ ◽  
Naeem IQBAL ◽  
Amjad HAMEED ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Enzymes ◽  
Glycine Betaine ◽  
Lead Toxicity ◽  
Lead Uptake ◽  
And Oxidative Stress

scholarly journals Antioxidant Enzymes Regulate Reactive Oxygen Species during Pod Elongation in Pisum sativum and Brassica chinensis

PLoS ONE ◽  
2014 ◽  
Vol 9 (2) ◽  
pp. e87588 ◽  
Author(s):  
Nan Liu ◽  
Zhifang Lin ◽  
Lanlan Guan ◽  
Gerald Gaughan ◽  
Guizhu Lin
Keyword(s):  
Reactive Oxygen Species ◽  
Antioxidant Enzymes ◽  
Pisum Sativum ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Brassica Chinensis

scholarly journals Effects of Nanoparticle Hydroxyapatite on Growth and Antioxidant System in Pakchoi (Brassica chinensis L.) from Cadmium-Contaminated Soil

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Zhangwei Li ◽  
Jiaai Huang
Keyword(s):  
Antioxidant Enzymes ◽  
Vitamin C ◽  
Contaminated Soil ◽  
Plant Uptake ◽  
Cd Stress ◽  
Cd Uptake ◽  
Brassica Chinensis ◽  
Plant Shoots ◽  
Control Samples ◽  
Cadmium Contaminated Soil

The effects of nanoscale particle hydroxyapatite (nHAP) on biomass, Cd uptake, the level of chlorophyll, vitamin C, malondialdehyde (MDA), and the activities of antioxidant enzymes, including SOD, CAT, and POD in pakchoi in Cd-contaminated soil, were evaluated by conducting pot experiment. Results showed that, by application of the 5 g·kg−1, 10 g·kg−1, 20 g·kg−1, and 30 g·kg−1nHAP in 10 mg·kg−1Cd-contaminated soil, the biomass of plant increased by 7.97%, 13.21%, 19.53%, and 20.23%, respectively. In addition, the reduction of Cd in shoots was 27.12%, 44.20%, 50.91%, and 62.36% compared to control samples. It was found that the supplement of the nHAP can increase the level of chlorophyll and vitamin C and decrease the level of MDA in plant shoots. Furthermore, the increment activities of SOD, CAT, and POD can be observed after addition of nHAP in Cd-contaminated soil. The results confirmed that nHAP can be applied to reduce the plant uptake of Cd and resist the Cd stress in the plant in Cd-contaminated soil.

Lead and lead toxicity in domestic and free living birds

2003 ◽  
Vol 32 (1) ◽  
pp. 3-13 ◽  
Author(s):  
N. De Francisco ◽  
N. De Francisco ◽  
N. De Francisco
Keyword(s):  
Lead Toxicity ◽  
Free Living
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