Kanaji Masakorala

Kanaji Masakorala
University of Ruhuna · Department of Botany

BSc,MSc, PhD

About

51
Publications
7,085
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747
Citations
Citations since 2017
27 Research Items
529 Citations
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100

Publications

Publications (51)
Conference Paper
Full-text available
Pseudanabaena is a frequently found bloom-forming filamentous cyanobacteria in Sri Lankan freshwater reservoirs. Bacteria-mediated controlling measures are effective approaches to curb these nuisance blooms. During a cyanolytic process, antagonist bacteria lyse cyanobacterial cells and interfere with their normal metabolism. However, detailed studi...
Conference Paper
Full-text available
Rice is one of the most important food crop in worldwide but the production of rice is reduced mainly because of the abiotic stress. Among that, Iron (Fe2+) toxicity is one of the most commonly observed abiotic stress which reduces the rice yield in lowland paddy in worldwide. Iron toxicity of wetland rice is associated with a high concentration of...
Conference Paper
Full-text available
Maussakelle reservoir provides the main water supply to the Laxapana Hydroelectric Power Station, one of the main hydropower stations in Sri Lanka. The villagers nearby depend on this reservoir for drinking water and fishing. The presence of algal blooms in reservoirs may cause health problems as well as they can interfere with operational procedur...
Article
Full-text available
This study aimed to develop an empirical model to predict the spatial distribution of Aphanizomenon using the Ridiyagama reservoir in Sri Lanka with a dual-model strategy. In December 2020, a bloom was detected with a high density of Aphanizomenon and chlorophyll-a concentration. We generated a set of algorithms using in situ chlorophyll-a data wit...
Conference Paper
Full-text available
Cyanolytic bacteria inhabited in freshwaters play a major role in controlling cyanobacterial blooms. Disruption of photosynthesis processes, synthesis, and maintenance of photosynthetic pigments in cyanobacteria leading to death is one of the major strategies utilized by cyanolytic bacteria in controlling cyanobacterial blooms. However, the mechani...
Article
Outbreaks of cyanobacterial blooms in freshwaters have been increasingly reported worldwide during the last few decades. One of the major problems with cyanobacterial blooms is that some species can be toxic. Their toxins (cyanotoxins) can have mild to serious health effects on humans and animals due to direct contact or ingestion with drinking wat...
Conference Paper
Full-text available
Iron toxicity is one of the widely distributed nutritional disorders that affect rice production negatively. Therefore, the identification of efficient biomarkers for screening rice varieties with tolerance to excess Fe 2+ is important. However, leaf bronzing has been widely used as a phenotypic biomarker in screening rice varieties against Fe 2+ t...
Article
Full-text available
Particulate matter (PM) is a complex mixture of solid particles and liquid droplets suspended in the air with varying size, shape, and chemical composition which intensifies significant concern due to severe health effects. Based on the well-established human health effects of outdoor PM, health-based standards for outdoor air have been promoted (e...
Article
Soil contaminated with used lubricant oil (ULO) has become an emerging environmental threat. Phytoremediation is a cost effective, environmentally friendly and novel technique with great potential for remediation of soils contaminated with used lubricating oil (ULO). Therefore, the aim of this study was to investigate the phytoremediation potential...
Conference Paper
Full-text available
Cyanobacteria are a highly diverse group of prokaryotes and some of them release toxins (cyanotoxins) into their aquatic habitats. Due to high toxicity, tendency to bioaccumulate and biomagnify, cyanotoxins may risk human and animal health. Chandrika wewa (448 ha) supplies drinking water for more than 5000 families in the Walawa river basin. Howeve...
Conference Paper
Full-text available
Fe content varies (470-1200 mg/kg) in the soil of the low-country wet zone (LCWZ) of Sri Lanka. Generally, rice plants grow in the presence of 60-300 ppm of Fe levels in soil. Therefore, iron (Fe) toxicity in the soil is one of the major constraints for rice production in the LCWZ. Thus, selection of rice varieties with tolerance to Fe toxicity is...
Conference Paper
Full-text available
Contamination of soil with Used Lubricant oil (ULO) has become an emerging environmental threat due to possible negative impacts of ULO on different ecological receptors. Bioremediation has been considered as a green technological approach with a potential to decontaminate ULO contaminated soil. However, bioremediation efficiency and success are sp...
Article
Screening of plant species with an ability to grow on contaminated soil is the most critical step in the planning of a phytoremediation program. While flourishing growth of Impatiens balsamina L. and Crotalaria retusa L. has been observed in areas adjacent to automobile service stations in Sri Lanka, no systematic study of their tolerance to used l...
Article
An efficient biosurfactant-producing strain was isolated and cultured from Dagang oil field (China) using crude oil as sole source of carbon. Based on partial sequenced 16S rDNA analysis, the isolated strain was identified as Pseudomonas aeruginosa SNP0614. The bacterium P. aeruginosa SNP0614 produced a type of biosurfactant with excessive foam-for...
Article
This research was conducted to investigate effects of crude oil contamination stress on soil chemical properties and actinomycete diversity based on molecular approaches. In this study, there was a higher contamination level of petroleum hydrocarbon of 26.6 mg g⁻¹ in the soil. And its total abundance of actinomycete had a lower order of magnitude t...
Article
Full-text available
Aerobic acclimatization cultures of oil production water from two adjacent oil production wells (Xi15-14 and Xi51-5) in one block of Dagang oilfield were generated depending on crude oil as the sole carbon source and energy. Both cultures revealed a high degrading efficiency for a wide range of hydrocarbons, but degradation trend were striking diff...
Article
Full-text available
Carbon dots (Cdots), as a class of novel photoluminescence nanoprobes, has attracted tremendous interest for its broad application in recent years. Thus, the toxicity and behavior of Cdots in biological systems become important fundamental problems that require significant attention. In this study, Cdots with diameters of 5 nm are produced using mi...
Article
Effects of oxygen inoculation were investigated on oil biodegradation and biodiversity of reservoir microorganism in Dagang oil field. The biodegrading was evaluated and analyzed or estimated by using in-vitro enrichment, denaturing gradient gel electrophoresis, real time PCR and GC–MS. The bacterial communities of production water containing reser...
Article
Full-text available
The continuous increase in oil production has led to the contamination of soil and water ecosystems. Contamination results in negative effects. Polycyclic aromatic hydrocarbons (PAHs) persist in soil because of their low volatility, low solubility and low bioavailability. Thus, PAH removal using conventional surfactant washing is difficult. Laborat...
Article
Full-text available
A new nanopesticide, carboxymethyl-beta-cyclodextrin-Fe3O4 magnetic nanoparticles-Diuron (CM-beta-CD-MNPs-Diuron), was synthesized from an inclusion complex of CM-beta-CD-MNPs as host and diuron as guest molecules. The transmission electron microscopy revealed it had an average diameter of 25 nm which is more or less the same as that of MNPs (avera...
Article
Full-text available
Isolating novel crude-oil-degrading bacteria from oil-water mixture of oil production well and evaluating their degradation capacities are vitally important in the remediation of oil-polluted environments and crude oil exploitation. According to the molecular screening with degenerate primers of alkane hydroxylase gene (alk B), a strain Acinetobact...
Article
Full-text available
The pryene-degradation bacterium strain USTB-X was newly isolated from the polycyclic aromatic hydrocarbon (PAH)-contaminated soil in Beijing Coking Plant, China. The strain was identified as Acinetobacter with respect to its 16S rDNA and morphological and physiological characteristics. The strain was Gram-negative, non-mobile, non-acid-fast, and n...
Article
The phenanthrene degrading novel bacterium strain USTB-RU was isolated from petroleum contaminated soil in Dagan oilfield, southeast of Tianjin, northeast China. The novel isolate was identified as Pseudomonas sp. USTB-RU on the basis of morphological, physicochemical characteristics and analysis of 16S rDNA gene sequence. The strain could degrade...
Article
Full-text available
The accidents of aniline spill and explosion happened almost every year in China, whereas the toxic effect of aniline on soil microbial activity remained largely unexplored. In this study, isothermal microcalorimetric technique, glucose analysis, and soil enzyme assay techniques were employed to investigate the toxic effect of aniline on microbial...
Article
Aerobic biodegradation of crude oil and its pathways were investigated via in vitro culture and GC-MS analysis in water flooding wells of Dagang oil field. The in vitro aerobic culture lasted 90days when 99.0% of n-alkanes and 43.03-99.9% of PAHs were degraded and the biomarkers and their ratios were changed. The spectra of components in the residu...
Article
Full-text available
Main physicochemical and microbiological parameters of collected petroleum-contaminated soils with different degrees of contamination from DaGang oil field (southeast of Tianjin, northeast China) were comparatively analyzed in order to assess the influence of petroleum contaminants on the physicochemical and microbiological properties of soil. An i...
Article
Full-text available
The objective of the present study was to evaluate effects of petroleum hydrocarbon contaminated soil on the leguminous plant, Vigna radiata L. Seed germination, metabolism and early growth performance of V. radiata L. were studied as parameters by applying a combined approach. The employed combined method which included microcalorimetry and analys...
Article
An efficient biosurfactant-producing bacterium was isolated and cultured from petroleum reservoir in northeast China. Isolate was screened for biosurfactant production using haemolytic assay, Cetyl Trimethyl Ammonium Bromide agar plate assay (CTAB) and the qualitative oil-displacement test. Based on partial sequenced 16S rDNA analysis of isolate, U...
Article
Full-text available
Petroleum hydrocarbon contamination of soil is an emerging environmental threat on the Earth due to possible toxic impact on different ecological receptors. The present study was mainly carried out to evaluate the phytotoxicity of long-term total petroleum hydrocarbon-contaminated soils by the toxicity end points obtained from three plant species Z...
Article
The adsorption and desorption of dimethyl phthalate (DMP) on five types of carbon nanotubes (CNTs) were studied in the absence and presence of 50 mg/L copper(II) (Cu2+) ion. The adsorption and desorption data are well described by the Freundlich model and the first-order two-compartment model, respectively. The adsorption capacity of CNTs for DMP i...
Article
An efficient biosurfactant-producing bacterium was isolated and cultured from petroleum reservoir in northeast China. Isolate was screened for biosurfactant production using haemolytic assay, Cetyl Trimethyl Ammonium Bromide agar plate assay (CTAB) and the qualitative oil-displacement test. Based on partial sequenced 16S rDNA analysis of isolate, U...
Article
In this study, the toxicity effects of benzene (B), toluene (T), ethylbenzene (E), xylene (X) alone and substrate interactions in binary mixtures of BT, BE and BX mixed with equal mass concentrations on facultative anaerobic Rhodococcus sp. ustb-1 in LB medium were examined by a microcalorimetric method. The results showed that T, E and X alone are...
Article
Full-text available
The toxicities of three synthetic surfactants to the marine macroalga, Ulva lactuca, have been examined by monitoring chlorophyll a fluorescence quenching. The anionic surfactant, sodium dodecyl sulphate (SDS), exerted no measurable toxicity over the concentration range 0–10mgL−1, while presence of the non-ionic surfactant, Triton X-100 (TX), elici...
Article
Uptake of Pd, Cd and Pb by the marine macroalga, Ulva lactuca, has been studied in the presence of an anionic (sodium dodecyl sulphate, SDS), cationic (hexadecyltrimethylammonium bromide; HDTMA) and non-ionic (Triton X-100; TX) surfactant. Compared with the surfactant-free system, metal sorption was reduced in the presence of SDS or TX. Neither sur...

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