International Journal on Environmental Sciences, 2011
... pp. 235246. 32. Saha NC, Bhunia F. and Kaviraj A., (1999). Toxicity of phenol to fish and aqu... more ... pp. 235246. 32. Saha NC, Bhunia F. and Kaviraj A., (1999). Toxicity of phenol to fish and aquatic ecosystem. Bull. Environ. Contam. ... (1758) Chetna Bakde, Aditi Niyogi Poddar International Journal of Environmental Sciences Volume 1 No.6, 2011 1316 33. ...
International Journal on Environmental Sciences, 2013
The coke oven effluent of Bhilai steel plant has been reported to contain a high amount of phenol... more The coke oven effluent of Bhilai steel plant has been reported to contain a high amount of phenol, besides the presence of other toxic substances. Hence, this work on its effect on the Aspartate amino transaminases (ASAT) and Alanine amino transaminases (ALAT) activities in liver and gills of Channa punctatus was undertaken as an attempt to study the stress response of fishes to the presence of this effluent. Exposure of fishes to three different concentrations of whole effluent (10%, 20% and 30%) along with tap water as control was done in groups of 12 fishes each. Collection of fresh samples of target organs, (liver and gills) from each group was done by dissection at 7 days interval for 28 days. The organs removed were immersed in 0.9% saline and quickly stored at −23°C for further use. Extraction of sample was done by homogenizing 1 g. of each tissue type (liver and gill) with 5 ml of freshly prepared 0.9% ice cold saline followed by centrifugation at 6000 rpm for 15 minutes. The supernatant obtained was used for enzyme assay. The activities of ALAT and ASAT were estimated according to the methods of 2,4-DNPH (Reitman and Frankel 1957). The results obtained were expressed as IU/litre. Data obtained from the study were subjected to descriptive statistics to establish mean and standard error. Significance of treatments was assessed by two-way ANOVA using SPSS. Higher activity of ALAT observed in liver tissue of treated fishes in the first two weeks after exposure might be due to stress caused by exposure to phenolic effluent, since stress in general is known to elevate amino transferase activities to cope up with augmentation in energy demand. Decline in ALAT and ASAT activities from the 3rd week onwards may be indicative of liver damage.
Fishes are aquatic and poikilothermic animals. Hence, their existence and performance is dominate... more Fishes are aquatic and poikilothermic animals. Hence, their existence and performance is dominated by the quality of their environment. Pollution of water bodies forces them to acclimatize to various factors thus imposing a considerable amount of stress on their lives. This ability to detect sudden changes in environment and monitoring short or long term changes in water quality makes the fish efficient biomarkers. The Bhilai Steel Plant is situated 30 kilometers (west) of Raipur, the capital of Chhattisgarh. Besides good quality steel, it also produces important by products, such as, Coal tar, Naphthalene and Benzol. Effluents generated are dumped into the two local rivers, the Kharoon and the Sheonath through various channels. Analysis of the physico-chemical constituents of the different effluents reveals the coke oven effluent to contain a high amount of phenol, besides the presence of other toxic substances and hence is not expected to be congenial for the existence of fish. Co...
International Journal on Environmental Sciences, 2011
Fishes are aquatic and poikilothermic animals. Hence, their existence and performance is dominate... more Fishes are aquatic and poikilothermic animals. Hence, their existence and performance is dominated by the quality of their environment. Pollution of water bodies forces them to acclimatize to various factors thus imposing a considerable amount of stress on their lives. This ability to detect sudden changes in environment and monitoring short or long term changes in water quality makes the fish efficient biomarkers. The Bhilai Steel Plant is situated 30 kilometers (west) of Raipur, the capital of Chhattisgarh. Besides good quality steel, it also produces important by products, such as, Coal tar, Naphthalene and Benzol. Effluents generated are dumped into the two local rivers, the Kharoon and the Sheonath through various channels. Analysis of the physico-chemical constituents of the different effluents reveals the coke oven effluent to contain a high amount of phenol, besides the presence of other toxic substances and hence is not expected to be congenial for the existence of fish. Co...
Bitter gourd (Momordica charantia) is an economically important vegetable
crop facing considerabl... more Bitter gourd (Momordica charantia) is an economically important vegetable crop facing considerable yield loss due to infection by root-knot nematode (Meloidogyne incognita). To understand the biochemical changes taking place during the early response to nematode attack in bitter gourd, pot experiments were conducted. Nematodes were isolated and inoculated (500J2/pot) into the rhizosphere of seedlings. A rapid augmentation in the protein concentration in the first week and total sugar level in the fourth week of inoculation in infected roots was observed. The study indicates a higher rate of protein synthesis during the invasion of nematodes for initiation of early primary resistance mechanism by the plants to combat nematode attack. Augmentation in sugar levels in the 4th week coincides with gall formation in the root tissue by the nematode and indicates a greater influx of sugars in the attacked tissue for providing nutrition to the nematodes for their growth and survival
Districts of Chhattisgarh state (India) were surveyed for plant parasitic nematodes associated wi... more Districts of Chhattisgarh state (India) were surveyed for plant parasitic nematodes associated with various vegetable crop plants. Soil and root samples were collected from the rhizosphere of plants and nematodes isolated by Cobb's sieving and decanting method, followed by modified Baermann's funnel technique. Nine species of nematodes spread over six genera, were found associated with tomato, beans, brinjal, cowpea and bottle gourd. Meloidogyne javanica, M. incognita, M. arenaria and Meloidogyne spp. were found to be prevalent in the Durg district. The reniform nematode, Rotylenchulus reniformis was prevalent in Bilaspur district and M. javanica in Jashpur district. R. reniformis and T. indicus are most frequent species (both 53.85%) followed by M. javanica (46.15%), Pratylenchus spp. (30.77%) and Helicotylenchus spp. and Tylenchidae least frequent (both 7.69%). Highest prominence value was observed for M. javanica (198.60) followed by M. incognita (191.18) and Meloidogyne ...
International Journal on Environmental Sciences, 2011
... pp. 235246. 32. Saha NC, Bhunia F. and Kaviraj A., (1999). Toxicity of phenol to fish and aqu... more ... pp. 235246. 32. Saha NC, Bhunia F. and Kaviraj A., (1999). Toxicity of phenol to fish and aquatic ecosystem. Bull. Environ. Contam. ... (1758) Chetna Bakde, Aditi Niyogi Poddar International Journal of Environmental Sciences Volume 1 No.6, 2011 1316 33. ...
International Journal on Environmental Sciences, 2013
The coke oven effluent of Bhilai steel plant has been reported to contain a high amount of phenol... more The coke oven effluent of Bhilai steel plant has been reported to contain a high amount of phenol, besides the presence of other toxic substances. Hence, this work on its effect on the Aspartate amino transaminases (ASAT) and Alanine amino transaminases (ALAT) activities in liver and gills of Channa punctatus was undertaken as an attempt to study the stress response of fishes to the presence of this effluent. Exposure of fishes to three different concentrations of whole effluent (10%, 20% and 30%) along with tap water as control was done in groups of 12 fishes each. Collection of fresh samples of target organs, (liver and gills) from each group was done by dissection at 7 days interval for 28 days. The organs removed were immersed in 0.9% saline and quickly stored at −23°C for further use. Extraction of sample was done by homogenizing 1 g. of each tissue type (liver and gill) with 5 ml of freshly prepared 0.9% ice cold saline followed by centrifugation at 6000 rpm for 15 minutes. The supernatant obtained was used for enzyme assay. The activities of ALAT and ASAT were estimated according to the methods of 2,4-DNPH (Reitman and Frankel 1957). The results obtained were expressed as IU/litre. Data obtained from the study were subjected to descriptive statistics to establish mean and standard error. Significance of treatments was assessed by two-way ANOVA using SPSS. Higher activity of ALAT observed in liver tissue of treated fishes in the first two weeks after exposure might be due to stress caused by exposure to phenolic effluent, since stress in general is known to elevate amino transferase activities to cope up with augmentation in energy demand. Decline in ALAT and ASAT activities from the 3rd week onwards may be indicative of liver damage.
Fishes are aquatic and poikilothermic animals. Hence, their existence and performance is dominate... more Fishes are aquatic and poikilothermic animals. Hence, their existence and performance is dominated by the quality of their environment. Pollution of water bodies forces them to acclimatize to various factors thus imposing a considerable amount of stress on their lives. This ability to detect sudden changes in environment and monitoring short or long term changes in water quality makes the fish efficient biomarkers. The Bhilai Steel Plant is situated 30 kilometers (west) of Raipur, the capital of Chhattisgarh. Besides good quality steel, it also produces important by products, such as, Coal tar, Naphthalene and Benzol. Effluents generated are dumped into the two local rivers, the Kharoon and the Sheonath through various channels. Analysis of the physico-chemical constituents of the different effluents reveals the coke oven effluent to contain a high amount of phenol, besides the presence of other toxic substances and hence is not expected to be congenial for the existence of fish. Co...
International Journal on Environmental Sciences, 2011
Fishes are aquatic and poikilothermic animals. Hence, their existence and performance is dominate... more Fishes are aquatic and poikilothermic animals. Hence, their existence and performance is dominated by the quality of their environment. Pollution of water bodies forces them to acclimatize to various factors thus imposing a considerable amount of stress on their lives. This ability to detect sudden changes in environment and monitoring short or long term changes in water quality makes the fish efficient biomarkers. The Bhilai Steel Plant is situated 30 kilometers (west) of Raipur, the capital of Chhattisgarh. Besides good quality steel, it also produces important by products, such as, Coal tar, Naphthalene and Benzol. Effluents generated are dumped into the two local rivers, the Kharoon and the Sheonath through various channels. Analysis of the physico-chemical constituents of the different effluents reveals the coke oven effluent to contain a high amount of phenol, besides the presence of other toxic substances and hence is not expected to be congenial for the existence of fish. Co...
Bitter gourd (Momordica charantia) is an economically important vegetable
crop facing considerabl... more Bitter gourd (Momordica charantia) is an economically important vegetable crop facing considerable yield loss due to infection by root-knot nematode (Meloidogyne incognita). To understand the biochemical changes taking place during the early response to nematode attack in bitter gourd, pot experiments were conducted. Nematodes were isolated and inoculated (500J2/pot) into the rhizosphere of seedlings. A rapid augmentation in the protein concentration in the first week and total sugar level in the fourth week of inoculation in infected roots was observed. The study indicates a higher rate of protein synthesis during the invasion of nematodes for initiation of early primary resistance mechanism by the plants to combat nematode attack. Augmentation in sugar levels in the 4th week coincides with gall formation in the root tissue by the nematode and indicates a greater influx of sugars in the attacked tissue for providing nutrition to the nematodes for their growth and survival
Districts of Chhattisgarh state (India) were surveyed for plant parasitic nematodes associated wi... more Districts of Chhattisgarh state (India) were surveyed for plant parasitic nematodes associated with various vegetable crop plants. Soil and root samples were collected from the rhizosphere of plants and nematodes isolated by Cobb's sieving and decanting method, followed by modified Baermann's funnel technique. Nine species of nematodes spread over six genera, were found associated with tomato, beans, brinjal, cowpea and bottle gourd. Meloidogyne javanica, M. incognita, M. arenaria and Meloidogyne spp. were found to be prevalent in the Durg district. The reniform nematode, Rotylenchulus reniformis was prevalent in Bilaspur district and M. javanica in Jashpur district. R. reniformis and T. indicus are most frequent species (both 53.85%) followed by M. javanica (46.15%), Pratylenchus spp. (30.77%) and Helicotylenchus spp. and Tylenchidae least frequent (both 7.69%). Highest prominence value was observed for M. javanica (198.60) followed by M. incognita (191.18) and Meloidogyne ...
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Papers by Aditi Niyogi Poddar
crop facing considerable yield loss due to infection by root-knot nematode
(Meloidogyne incognita). To understand the biochemical changes taking
place during the early response to nematode attack in bitter gourd, pot
experiments were conducted. Nematodes were isolated and inoculated
(500J2/pot) into the rhizosphere of seedlings. A rapid augmentation in the
protein concentration in the first week and total sugar level in the fourth
week of inoculation in infected roots was observed. The study indicates a
higher rate of protein synthesis during the invasion of nematodes for initiation
of early primary resistance mechanism by the plants to combat nematode
attack. Augmentation in sugar levels in the 4th week coincides with gall
formation in the root tissue by the nematode and indicates a greater influx of
sugars in the attacked tissue for providing nutrition to the nematodes for
their growth and survival
crop facing considerable yield loss due to infection by root-knot nematode
(Meloidogyne incognita). To understand the biochemical changes taking
place during the early response to nematode attack in bitter gourd, pot
experiments were conducted. Nematodes were isolated and inoculated
(500J2/pot) into the rhizosphere of seedlings. A rapid augmentation in the
protein concentration in the first week and total sugar level in the fourth
week of inoculation in infected roots was observed. The study indicates a
higher rate of protein synthesis during the invasion of nematodes for initiation
of early primary resistance mechanism by the plants to combat nematode
attack. Augmentation in sugar levels in the 4th week coincides with gall
formation in the root tissue by the nematode and indicates a greater influx of
sugars in the attacked tissue for providing nutrition to the nematodes for
their growth and survival