scholarly journals Transfer of heavy metals from soils to curly mustard (Brassica juncea (L.) Czern.) grown in an agricultural farm in Brunei Darussalam

Heliyon ◽  
2021 ◽  
Vol 7 (9) ◽  
pp. e07945
Author(s):  
Adzrin Asikin Zunaidi ◽  
Lee Hoon Lim ◽  
Faizah Metali
Keyword(s):  
Heavy Metals ◽  
Brassica Juncea ◽  
Brunei Darussalam ◽  
Agricultural Farm

scholarly journals Efficacy of Indole Acetic Acid and Exopolysaccharides-Producing Bacillus safensis Strain FN13 for Inducing Cd-Stress Tolerance and Plant Growth Promotion in Brassica juncea (L.)

2021 ◽  
Vol 11 (9) ◽  
pp. 4160
Author(s):  
Farheen Nazli ◽  
Xiukang Wang ◽  
Maqshoof Ahmad ◽  
Azhar Hussain ◽  
Bushra ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Plant Growth ◽  
Stress Tolerance ◽  
Brassica Juncea ◽  
Contaminated Soils ◽  
Effective Strain ◽  
Antioxidant Enzyme Activities ◽  
Cd Stress ◽  
Cd Accumulation ◽  
Bacillus Safensis

Untreated wastewater used for irrigating crops is the major source of toxic heavy metals and other pollutants in soils. These heavy metals affect plant growth and deteriorate the quality of edible parts of growing plants. Phytohormone (IAA) and exopolysaccharides (EPS) producing plant growth-promoting rhizobacteria can reduce the toxicity of metals by stabilizing them in soil. The present experiment was conducted to evaluate the IAA and EPS-producing rhizobacterial strains for improving growth, physiology, and antioxidant activity of Brassica juncea (L.) under Cd-stress. Results showed that Cd-stress significantly decreased the growth and physiological parameters of mustard plants. Inoculation with Cd-tolerant, IAA and EPS-producing rhizobacterial strains, however, significantly retrieved the inhibitory effects of Cd-stress on mustard growth, and physiology by up regulating antioxidant enzyme activities. Higher Cd accumulation and proline content was observed in the roots and shoot tissues upon Cd-stress in mustard plants while reduced proline and Cd accumulation was recorded upon rhizobacterial strains inoculation. Maximum decrease in proline contents (12.4%) and Cd concentration in root (26.9%) and shoot (29%) in comparison to control plants was observed due to inoculation with Bacillus safensis strain FN13. The activity of antioxidant enzymes was increased due to Cd-stress; however, the inoculation with Cd-tolerant, IAA-producing rhizobacterial strains showed a non-significant impact in the case of the activity of superoxide dismutase (SOD), peroxidase (POX) and catalase (CAT) in Brassica juncea (L.) plants under Cd-stress. Overall, Bacillus safensis strain FN13 was the most effective strain in improving the Brassica juncea (L.) growth and physiology under Cd-stress. It can be concluded, as the strain FN13 is a potential phytostabilizing biofertilizer for heavy metal contaminated soils, that it can be recommended to induce Cd-stress tolerance in crop plants.

Effect of EDTA and EDDS on Phytoremediation of Pb- and Zn- Contaminated Soil by Brassica Juncea

2012 ◽  
Vol 518-523 ◽  
pp. 5040-5046 ◽  
Author(s):  
Li Di Gao ◽  
Naoki Kano ◽  
Yuichi Sato ◽  
Shuang Zhang ◽  
Hiroshi Imaizumi
Keyword(s):  
Heavy Metals ◽  
Control System ◽  
Plant Growth ◽  
Brassica Juncea ◽  
Contaminated Soil ◽  
Chelating Agents ◽  
Environmental Control ◽  
Chelating Agent ◽  
Whole Plant ◽  
Biomass Loss

Effect of EDTA and EDDS on phytoremediation of Pb- and Zn- contaminated soil by Brassica Juncea was investigated in this work. Especially, the effect of the kind and the method of adding chelating agent was investigated during the plant growth. Plants were grown in an environmental control system. The biomass of the whole plant was weighed, and the uptake of Pb and Zn in shoot and root were determined using ICP-AES. Consequently, the following matters have been obtained: (1) Both EDTA and EDDS significantly enhanced the translocation of metals (Pb and Zn) in soil from root to shoot. Furthermore, the two chelating agents resulted in a sharply biomass loss for more than 30% of the control. As a result, the total uptake amount of metals by Brassica Juncea was decreased (except the uptake of Pb with the addition of 3.0 mmol•kg-1 EDTA). (2) EDDS showed the higher inhibition for the growth of Brassica Juncea than EDTA. (3) The method for adding EDTA and EDDS at several times separately did not necessarily increase the uptake of heavy metals.

scholarly journals Heavy Metal Contents and Physical Parameters ofAegiceras corniculatum, Brassica juncea, andLitchi chinensisHoneys from Bangladesh

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Nandita Sarker ◽  
Muhammed Alamgir Zaman Chowdhury ◽  
Abu Naieum Muhammad Fakhruddin ◽  
Zeenath Fardous ◽  
Mohammed Moniruzzaman ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Brassica Juncea ◽  
Sugar Content ◽  
Physicochemical Analysis ◽  
Total Sugar ◽  
Physical Parameters ◽  
Total Sugar Content ◽  
Metal Levels ◽  
The Mean

The present study was undertaken to determine the heavy metal levels and the physicochemical parameters (pH, electrical conductivity (EC), and ash, moisture, and total sugar content) of honeys from Bangladesh. Three different floral honeys were investigated, namely, khalsi (Aegiceras corniculatum), mustard (Brassica juncea), and litchi (Litchi chinensis) honeys. The heavy metals in the honeys were determined by using a High Temperature Dry Oxidation method followed by Atomic Absorption Spectroscopy. The mean pH, EC, and ash, moisture, and total sugar contents of the investigated honeys were 3.6, 0.51 mS/cm, 0.18%, 18.83%, and 68.30%, respectively. Iron was the most abundant among all the investigated heavy metals, ranging from 13.51 to 15.44 mg/kg. The mean concentrations of Mn and Zn in the investigated honeys were 0.28 mg/kg and 2.99 mg/kg, respectively. Cd was below the detection limit, and lead was found in some honey samples, but their contents were below the recommended Maximum Acceptable Level. Cr was also found in all of the samples, but its concentration was within the limit. The physicochemical analysis of the honey samples yielded levels within the limits set by the international honey legislation, indicating that the honey samples were of good quality and had acceptable values for maturity, purity, and freshness.

Effect of garden waste biochar on the bioavailability of heavy metals and growth of Brassica juncea (L.) in a multi-contaminated soil

2020 ◽  
Vol 13 (12) ◽  
Author(s):  
Mahrous Awad ◽  
Mohamed Moustafa-Farag ◽  
Lan Wei ◽  
Qing Huang ◽  
Zhongzhen Liu
Keyword(s):  
Heavy Metals ◽  
Brassica Juncea ◽  
Contaminated Soil ◽  
Garden Waste

scholarly journals SCREENING OF VEGETABLES FOR PHYTOEXTRACTION OF HEAVY METALS

2014 ◽  
Vol 20 ◽  
pp. 81-88
Author(s):  
Baby Sharma Kafle
Keyword(s):  
Heavy Metals ◽  
Solanum Tuberosum ◽  
Vicia Faba ◽  
Brassica Juncea ◽  
Contaminated Soil ◽  
Metal Contamination ◽  
Mixed Metal ◽  
Cu Accumulation ◽  
Spinacea Oleracea ◽  
Pb Accumulation

To understand the phytoextraction of heavy metals from contaminated soil, eighteen seasonalvegetable crops were investigated. The soil was artificially contaminated each with 300 mg kg-1CuCl2, 500 mg kg-1 Pb (NO3)2, 800 mg kg-1 ZnCl2 or their mixed metal (1600 mg kg-1). Lowestcopper (Cu) accumulation was recorded in Brassica juncea and highest in Vicia faba, while lowestlead (Pb) accumulation in Solanum tuberosum, and highest in Allium fistulossum; and lowest zinc(Zn) accumulation in both Allium fistulossum and Solanum tuberosum, and highest was in Vicia fabafrom the single metal contamination. Similarly, lowest Cu, Pb and Zn was recorded in Brassicajuncea, Brassica caulorapa and Allium fistulossum, respectively; and highest accumulation of Cu andPb was in Spinacea oleracea and Zn in Spinacea oleracea from their mixed metal treatments.DOI: http://dx.doi.org/10.3126/eco.v20i0.11469ECOPRINTAn International Journal of EcologyVol. 20, 2013page: 81-88

scholarly journals Activation of antioxidative and detoxificative systems in Brassica juncea L. plants against the toxicity of heavy metals

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Arleta Małecka ◽  
Agnieszka Konkolewska ◽  
Anetta Hanć ◽  
Liliana Ciszewska ◽  
Aleksandra Maria Staszak ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Brassica Juncea ◽  
Superoxide Anion ◽  
Growth And Development ◽  
Metal Uptake ◽  
Stress Conditions ◽  
Antioxidant Systems ◽  
Oxygen Species ◽  
Defence Mechanisms ◽  
Defence Proteins

AbstractPlant metal hyperaccumulators, to which Brassica juncea belongs, must have very efficient defence mechanisms that enable growth and development in an environment polluted with various heavy metals. B. juncea (Indiana mustard) v. Małopolska was exposed to the activity of trace elements such as cadmium (Cd), copper (Cu), lead (Pb), and zinc (Zn) in combinations: CuPb, CuCd, CuZn, PbCd, PbZn, and ZnCd in a concentration of 25 μM each for 96 h during control cultivation. We observed a clear tendency for metal uptake and accumulation in above-ground parts which is characteristic of hyperaccumulators. The combinations of CuCd, CuZn, and PbCd inhibited the development of the seedlings the most. The used metal combinations increased the levels of reactive oxygen species (ROS) such as: hydrogen peroxide (H2O2), superoxide anion (O2.−) and oxidized proteins in B. juncea organs, generating oxidative stress conditions in the cells. We determined the level of transcription of the respective defence proteins of the detoxification and antioxidant systems. We have shown that in the first 24 h of stress condiction, activation of glutamylcysteine-γ synthetase (yECS) and glutathione reductase (GR1) enzymes related to the detoxification of heavy metals is important for B. juncea plants. In addition, the data provide important information on how plants respond to the presence of heavy metals in the first days of stress conditions.

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