Assessment of plant growth attributes, bioaccumulation, enrichment, and translocation of heavy metals in water lettuce (Pistia stratiotes L.) grown in sugar mill effluent

2018 ◽  
Vol 20 (5) ◽  
pp. 507-521 ◽  
Author(s):  
Vinod Kumar ◽  
Jogendra Singh ◽  
A.K. Chopra
Keyword(s):  
Heavy Metals ◽  
Plant Growth ◽  
Pistia Stratiotes ◽  
Sugar Mill ◽  
Water Lettuce ◽  
Sugar Mill Effluent ◽  
Growth Attributes

scholarly journals Sugar Mill Effluent Utilization in the Cultivation of Maize (Zea mays L.) in Two Seasons

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Vinod Kumar
Keyword(s):  
Heavy Metals ◽  
Zea Mays ◽  
Soil Properties ◽  
Zea Mays L ◽  
Contamination Factor ◽  
Agronomic Performance ◽  
Sugar Mill ◽  
Sugar Mill Effluent ◽  
Total Carbohydrates ◽  
Biochemical Components

The aim of present investigation is to study the effects of sugar mill effluent fertigation on soil properties and agronomical characteristics of Maize (Zea mays L. cv. NMH 589) in two seasons. Six treatments of sugar mill effluent, namely, 0% (control), 20%, 40%, 60%, 80%, and 100%, were used for the cultivation of Z. mays. Fertigation with different concentrations of sugar mill effluent resulted in significant (P<0.01) changes in EC, pH, OC, Na+, K+, Ca2+, Mg2+, TKN, PO43-, SO42-, Fe3+, Zn2+, Cd2+, Cu2+, Mn2+, and Cr3+ of the soil in both seasons. The maximum agronomic performance of Z. mays was noted with 40% concentration of sugar mill effluent. Biochemical components like crude proteins, crude fiber, and total carbohydrates were recorded highest with 40% concentration of sugar mill effluent in both seasons. The contamination factor (Cf) of various heavy metals was observed in order of Mn2+>Zn2+>Cu2+>Cd2+>Cr3+ for soil and Mn2+>Zn2+>Cu2+>Cr3+>Cd2+ for Z. mays in both seasons after fertigation with sugar mill effluent. It appears that sugar mill effluent can be used as a biofertigant after appropriate dilution to improve the yield.

Phytoremediation of Chromium and Lead Using Water Lettuce Pistia stratiotes L.)

2013 ◽  
Vol 401-403 ◽  
pp. 2071-2075 ◽  
Author(s):  
Yuan Qing Zhou ◽  
Shu Ying Li ◽  
Yun Dong Shi ◽  
Wei Lv ◽  
Tai Bo Shen ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Aquatic Macrophytes ◽  
Bioconcentration Factor ◽  
Aquatic Macrophyte ◽  
Pistia Stratiotes ◽  
Chromium Removal ◽  
Water Lettuce ◽  
Metal Solution

Heavy metal pollution of water is of concern for human health and ecosystem. Under present investigation Pistia stratiotes L. (water lettuce) has been tested for removal of two important heavy metals chromium (Cr) and lead (Pb) from metal solution. This species was grown at four concentrations of Cr and Pb, i.e. 5.0, 10.0, 15.0 and 20.0 mg/L, respectively in single metal solution. This aquatic macrophyte has successfully removed up to 80% of Cr and 93% of Pb after 10 days. The bioconcentration factor (BCF) value ranged between 299 and 1026 for Cr and between 1672 and 1852 for Pb, respectively. The amount of BCF in Pistia stratiotes showed that removal of Pb was higher than removal of Cr. The accumulation of heavy metals was more obvious in the roots as compared to leaves. These findings contribute to the application of aquatic macrophytes to lead and chromium removal from moderately contaminated waters.

scholarly journals The Improved Phytoextraction of Heavy Metals and the Growth of Trifolium repens L.: The Role of K2HEDP and Plant Growth Regulators Alone and in Combination

2021 ◽  
Vol 13 (5) ◽  
pp. 2432
Author(s):  
Anna Makarova ◽  
Elena Nikulina ◽  
Tatiana Avdeenkova ◽  
Ksenia Pishaeva
Keyword(s):  
Heavy Metals ◽  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Trifolium Repens ◽  
Growth And Development ◽  
Water Infiltration ◽  
Iron Chelates ◽  
Iron Chelate ◽  
Trifolium Repens L

Heavy metals are among the most widespread pollutants in soil. Phytoextraction technology is used to solve the problem of multi-metal-contaminated soil. The efficiency of this process can be increased by introducing various amendments. A soil amendment is any material added to a soil to improve its physical properties, such as water retention, permeability, water infiltration, drainage, aeration, and structure. Some chemical amendments for enhanced phytoextraction, such as amino polycarboxylates chelators, can be hazardous to the environment and perform poorly at pH > 8. The effect of the potassium salt of hydroxyethylidene diphosphonic acid (K2HEDP), plant growth regulators (PGRs), and iron chelate alone and in combination on the phytoextraction by Trifolium repens L. seedlings of Cd, Ni, and Cu was studied in this work. K2HEDP works in a wider pH range. The results of this study confirmed that amino polycarboxylate chelators, with the sodium salt of ethylene diamine tetraacetic acid (Na2EDTA) as an example, have a pronounced negative effect on the growth and development (organ mass) of Trifolium repens L. seedlings. K2HEDP, proposed by the authors instead of Na2EDTA, produced a pronounced positive effect on plant growth and development, which was further enhanced by the use of PGRs and with iron chelates. However, it should be noted that K2HEDP showed significantly lower efficiency in trials on the Trifolium repens L. seedlings. The highest was the efficiency of K2HEDP with PGRs and iron chelates for the phytoextraction of Cd.

Studies on the population biology of water lettuce: Pistia stratiotes L.

Hydrobiologia ◽  
1984 ◽  
Vol 119 (1) ◽  
pp. 15-19 ◽  
Author(s):  
P. N. Rao ◽  
A. Sambi Reddy
Keyword(s):  
Population Biology ◽  
Pistia Stratiotes ◽  
Water Lettuce

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.

scholarly journals Genome Sequencing of Pantoea agglomerans C1 Provides Insights into Molecular and Genetic Mechanisms of Plant Growth-Promotion and Tolerance to Heavy Metals

2020 ◽  
Vol 8 (2) ◽  
pp. 153 ◽  
Author(s):  
Francesca Luziatelli ◽  
Anna Grazia Ficca ◽  
Mariateresa Cardarelli ◽  
Francesca Melini ◽  
Andrea Cavalieri ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Plant Pathogens ◽  
Growth Promotion ◽  
Pantoea Agglomerans ◽  
Toxic Heavy Metals ◽  
Circular Chromosome ◽  
Plant Growth Promoting ◽  
Genetic Mechanisms

Distinctive strains of Pantoea are used as soil inoculants for their ability to promote plant growth. Pantoea agglomerans strain C1, previously isolated from the phyllosphere of lettuce, can produce indole-3-acetic acid (IAA), solubilize phosphate, and inhibit plant pathogens, such as Erwinia amylovora. In this paper, the complete genome sequence of strain C1 is reported. In addition, experimental evidence is provided on how the strain tolerates arsenate As (V) up to 100 mM, and on how secreted metabolites like IAA and siderophores act as biostimulants in tomato cuttings. The strain has a circular chromosome and two prophages for a total genome of 4,846,925-bp, with a DNA G+C content of 55.2%. Genes related to plant growth promotion and biocontrol activity, such as those associated with IAA and spermidine synthesis, solubilization of inorganic phosphate, acquisition of ferrous iron, and production of volatile organic compounds, siderophores and GABA, were found in the genome of strain C1. Genome analysis also provided better understanding of the mechanisms underlying strain resistance to multiple toxic heavy metals and transmission of these genes by horizontal gene transfer. Findings suggested that strain C1 exhibits high biotechnological potential as plant growth-promoting bacterium in heavy metal polluted soils.

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