Floristic Condition and Species Distribution in Sundarban Mangrove Forest Community, Bangladesh

Muhibbullah, M.; ., M.A.T. Chowdhury; Sarwar, Iqbal

doi:10.3923/jbs.2007.384.388

Cited by 5 publications

(3 citation statements)

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“…Potassium concentrations ranged from 0.150 to 0.249 cmol/kg across the sites, with potassium playing a key role in nutrient use efficiency and sustainable agriculture. Potassium-solubilizing microorganisms contribute to the solubilization of fixed potassium, aligning with the findings of Muhibbullah et al, (2005).…”

Section: Discussionsupporting

confidence: 83%

Optimization of Growth Response Parameters, Screening and Molecular Detection of Pesticide Degradation Genes in Bacterial Isolates from Agricultural Soils

Anas, A.,

Shamsudeen, U.,

Ibrahim, Y.

2024

UJMR

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Study’s Novelty/ Excerpt This study demonstrated the capability of bacteria isolated from farmland soils in Kano Metropolis to biodegrade dichlorvos and carbofuran pesticides, identifying Bacillus sp., Serratia sp., and Pseudomonas sp. as key degraders. Optimization experiments revealed that Serratia sp. thrived at 100 mg/L dichlorvos concentration and 35°C, while Pseudomonas sp. showed maximum growth at 300 mg/L carbofuran concentration and 30°C, both with a pH of 7.0, 100 rpm agitation, and 5-day incubation period. Molecular analysis confirmed the presence of opd and mcd genes in Serratia sp. and Pseudomonas sp., respectively, highlighting their potential for effective bioremediation of pesticide-contaminated soils. Full Abstract Pesticides are organic compounds synthesized and used for pest control. The excessive and continuous dispersion of pesticides in the environment results in environmental pollution, necessitating remediation. This study investigated the potential of bacteria isolated from farmland soils in Kano Metropolis, Kano State, Nigeria, with a history of dichlorvos (2,2-dichlorovinyldimethylphosphate) and carbofuran (2,3-dihydro-2,2-dimethyl-7-benzofuranyl methylcarbamate) application, to biodegrade these pesticides. Three sampling sites were involved in sample collection, and the soil physicochemical parameters from each sample were determined. Isolation, identification, and screening of the bacterial isolates capable of utilizing the pesticides as sole sources of carbon were carried out. The following parameters (concentration of the pesticides, pH, temperature, agitation, and incubation time) were optimized to maximize degradation. The potent bacterial isolates were further subjected to molecular analysis for the detection of opd and mcd genes. The pesticide-degrading bacteria were identified as Bacillus sp., Serratia sp., and Pseudomonas sp. Serratia sp. recorded the highest growth in the presence of 1% v/v dichlorvos, while Pseudomonas sp. exhibited maximum growth at a 1% w/v carbofuran concentration. The optimized conditions that yielded the maximum microbial growth are: 100 mg/L pesticide concentration for Serratia sp and 300 mg/L for Pseudomonas sp, a pH of 7.0 and an agitation level of 100 rpm for both organisms, a temperature of 35°C for Serratia sp and 30°C for Pseudomonas sp, and an incubation time of 5 days for both organisms. The opd and mcd genes were identified from Serratia sp. and Pseudomonas sp. respectively. These results suggest that the isolated bacteria have the potential to degrade dichlorvos and carbofuran pesticides from the contaminated soil

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Section: Discussionsupporting

confidence: 83%

Optimization of Growth Response Parameters, Screening and Molecular Detection of Pesticide Degradation Genes in Bacterial Isolates from Agricultural Soils

Anas, A.,

Shamsudeen, U.,

Ibrahim, Y.

2024

UJMR

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“…When plants are subjected to saline conditions, photosynthetic activity tends to decrease, resulting in reduced plant growth, leaf area, chlorophyll content and chlorophyll fluorescence as reported by Muhammad et al in [18]. Szepsi et al in [19] suggested that the positive effect of SA could be attributed to increased CO2 assimilation, photosynthetic rate, and enhanced mineral uptake by stressed plants under SA treatment. Zeid in [21] reported the alleviation of adverse effects of salinity on chlorophyll content in barley through GA3 treatment.…”

Section: Chlorophyll Contentmentioning

confidence: 82%

Enhancing Chickpea (Cicer arietinum L.) Tolerance to Salinity through Plant Growth Regulators

Saif,

Mokarroma,

Ruma

et al. 2023

AJRAF

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During the period of 2020-21, a research study was carried out at the Plant Protective Culture Unit within the semi-controlled environmental settings of the Bangladesh Agricultural Research Institute. The aim of the study was to mitigate the negative impacts of salinity stress on chickpea by applying various concentrations of salicylic acid (SA) and gibberellic acid (GA3). Plants were subjected to four different levels of salinity stress, including a control group, mild stress, moderate stress, and severe stress. This was achieved by irrigating them with four varying concentrations of saline water (5, 7.5, 10 and 12.5 dSm-1) starting from the 14th day after sowing (DAS) and continuing until maturity at 100 DAS. On the other hand, the control plants received regular irrigation with tap water. Two concentrations of salicylic acid (SA) specifically 200 ppm and 400 ppm, along with gibberellic acid (GA3) at 10 ppm and 20 ppm, were administered as a foliar spray once a week, commencing at 20 days after sowing (DAS) and continuing until the flowering stage. Data related to chlorophyll levels in the leaves and water-related traits, including relative water content (RWC) and water retention capacity (WRC) were collected seven days after the foliar spray of these plant growth regulators at the flowering stage. Additionally, measurements of total dry weight, yield, and various yield-contributing factors were taken at the point of maturity. The results indicated that chickpea suffered adverse consequences due to salinity stress which included a reduction in chlorophyll content, a decrease in relative water content, a decline in water retention capacity, a decrease in total dry weight and a lower overall yield. However, the foliar application of different doses of salicylic acid (SA) and gibberellic acid (GA3) under varying levels of salinity stress had beneficial effects in alleviating the impact of salinity stress. Interestingly, it was observed that lower concentrations of SA at 200 ppm and GA3 at 10 ppm were more effective in mitigating the adverse effects of salinity stress and improving salinity tolerance in chickpea, especially under mild salinity stress conditions (5 dSm-1) as evidenced by the positive influence on the parameters mentioned above.

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“…Sundarbans is the largest halophytic formation situated in the estuary created by the combined flow of river Ganga and Brahmaputra (Muhibbullah et al, 2007). The mangrove swamps of Sundarbans are the breeding ground of various finfish and shellfish species.…”

Section: Introductionmentioning

confidence: 99%

Traditional knowledge of the fishermen community of Indian Sundarbans: An assessment of rationality and effectiveness

Roy¹,

Sinha²,

Manna³

et al. 2020

Indian J. Fish.

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The present paper describes various Indigenous Technical Knowledge (ITK) of the fishermen community of Indian Sundarbans in West Bengal documented during the period from 2013 to 2015. A total of eleven ITKs were documented including therapeutic value of fish with special reference to small indigenous fishes (SIF) and were categorised based on their uses. Effectiveness and rationality were assessed based on the view of the experts as well as that of fishers. The study indicated that seven ITKs documented were rational and effective. Those valid ITKs include four types of unique fishing methods; fish as special energy booster; methods to support natural fish breeding and fish marketing. Remaining four ITKs, like use of fishes to address unique human health issues, method to reduce mortality during prawn seed transport and behaviour of fish for forecasting extreme climatic events, although appeared as irrational and less effective as per the view of experts, fishers are practicing them and hence demand special attention for proper validation, improvement and popularisation in the context of changing regional resource structure and stakeholders’ needs.

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Floristic Condition and Species Distribution in Sundarban Mangrove Forest Community, Bangladesh

Cited by 5 publications

References 0 publications

Optimization of Growth Response Parameters, Screening and Molecular Detection of Pesticide Degradation Genes in Bacterial Isolates from Agricultural Soils

Optimization of Growth Response Parameters, Screening and Molecular Detection of Pesticide Degradation Genes in Bacterial Isolates from Agricultural Soils

Enhancing Chickpea (Cicer arietinum L.) Tolerance to Salinity through Plant Growth Regulators

Traditional knowledge of the fishermen community of Indian Sundarbans: An assessment of rationality and effectiveness

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