Arsenic Toxicity on Ludwigia octovalvis in Spiked Sand

Titah, Harmin Sulistiyaning; Abdullah, Siti Rozaimah Sheikh; Idris, Muhamad; Anuar, Nurina; Basri, Hassan; Mukhlisin, Muhammad

doi:10.1007/s00128-013-0996-5

Cited by 10 publications

(3 citation statements)

References 11 publications

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“…The wilting of leaves began at Day 3 in the NaCl concentration of 40,000 and 50,000 mg/L. According to Titah et al (2013a), the wilting, especially of the leaves, was observed as an initial symptom of phytotoxicity. However, the wilting leaves also occured at control and all salinity concentration at the end day of exposure (Day 7).…”

Section: Observation Of Physical On Survival Rhizophora Mucronatamentioning

confidence: 99%

Preliminary Phytotoxicity Test on Salinity Against Mangrove Plants of Rhizophora mucronata

Titah¹,

Purwanti²,

Pratikno³

et al. 2019

J. Ecol. Eng.

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The phytotechnology concept that is applied for a bio-desalination reactor become a new desalination technology. The desalination technology can be called as bio-desalination technology to remove ions of Na + and Clin brackish or saline water using mangrove plant. Before the mangrove plants were used in bio-desalination technology, the preliminary phytotoxicity test was conducted. The purpose was to determine the salinity concentration at which the mangrove species of Rhizophora mucronata can survive. The preliminary phytotoxicty test was carried out using a plastic reactor that was designed as a reed bed system. The reactors filled with gravel, sand, and artificial saline water. The variation of the NaCl concentrations were 0 mg/L as control, 10,000; 20,000; 30,000; 40,000, and 50,000 mg/L. The physical observation of the survival condition of Rhizophora mucronata was carried out during the preliminary test for 7 days. The analysis of Scanning Electron Microscopy (SEM) on Rhizophora mucronata was conducted at the end of exposure. The results showed that Rhizophora mucronata could not survive at the concentrations of 40,000 and 50,000 mg/L. Rhizophora mucronata changed the color of the leaves to brown and the stems become softer. Multiple cell damage and the decreasing trend of sodium and chloride amounts occured on roots and stems at the salinity concentration of 50,000 mg/L. In conclusion, the high of salinity concentration (> 30,000 mg/L) can be toxic to Rhizophora mucronata.

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Section: Observation Of Physical On Survival Rhizophora Mucronatamentioning

confidence: 99%

Preliminary Phytotoxicity Test on Salinity Against Mangrove Plants of Rhizophora mucronata

Titah¹,

Purwanti²,

Pratikno³

et al. 2019

J. Ecol. Eng.

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“…L. octovalvis is a plant species that can survive at a crude oil-contaminated site [16] and could uptake and accumulate arsenic in its tissues [17]. This study aimed to determine the level of arsenic (as arsenate) resistance of the identified rhizobacteria that were isolated from the roots of L. octovalvis grown in the greenhouse and contaminated land in Malacca, Malaysia.…”

Section: Introductionmentioning

confidence: 99%

Arsenic Resistance and Biosorption by Isolated Rhizobacteria from the Roots of Ludwigia octovalvis

Titah

Abdullah

Idris

et al. 2018

International Journal of Microbiology

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Certain rhizobacteria can be applied to remove arsenic in the environment through bioremediation or phytoremediation. This study determines the minimum inhibitory concentration (MIC) of arsenic on identified rhizobacteria that were isolated from the roots of Ludwigia octovalvis (Jacq.) Raven. The arsenic biosorption capability of the was also analyzed. Among the 10 isolated rhizobacteria, five were Gram-positive (Arthrobacter globiformis, Bacillus megaterium, Bacillus cereus, Bacillus pumilus, and Staphylococcus lentus), and five were Gram-negative (Enterobacter asburiae, Sphingomonas paucimobilis, Pantoea spp., Rhizobium rhizogenes, and Rhizobium radiobacter). R. radiobacter showed the highest MIC of >1,500 mg/L of arsenic. All the rhizobacteria were capable of absorbing arsenic, and S. paucimobilis showed the highest arsenic biosorption capability (146.4 ± 23.4 mg/g dry cell weight). Kinetic rate analysis showed that B. cereus followed the pore diffusion model (R2 = 0.86), E. asburiae followed the pseudo-first-order kinetic model (R2 = 0.99), and R. rhizogenes followed the pseudo-second-order kinetic model (R2 = 0.93). The identified rhizobacteria differ in their mechanism of arsenic biosorption, arsenic biosorption capability, and kinetic models in arsenic biosorption.

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“…L. octovalvis was chosen for this study since it was one of the plants that could survive contaminated site in Malaysia (Mushrifah 2011). According to Titah et al (2013) L. octovalvis could uptake and accumulate As in their tissue.…”

Section: Introductionmentioning

confidence: 99%