B. Karadge - Academia.edu (original) (raw)

Papers by B. Karadge

Journal of Photochemistry, 1981

Soil salinity and alkalinity are common restraints to crop productivity in arid and semi arid reg... more Soil salinity and alkalinity are common restraints to crop productivity in arid and semi arid regions. Saline and alkaline soils frequently cooccur in nature, but very few studies focus on the effects of various alkali stresses on plants. A study quantifying effect of carbonates salts (sodium bicarbonate, potassium bicarbonate and ammonium carbonate) on the activity of some antioxidative enzymes catalase, peroxidase, polyphenol oxidase and superoxide dismutase in the roots and leaves of Portulaca oleracea and Vigna aconitifolia grown under sand culture conditions was conducted. Results showed that the activity of all these enzymes increased under carbonate stress. This might have helped the plants to improve carbonate stress tolerance in both the plants.

Applications of antioxidants are increasing due to their multiple roles in removing harmful effec... more Applications of antioxidants are increasing due to their multiple roles in removing harmful effects of oxidative stress. For the present study TPC, DPPH, FRAP, Metal Chelating Ability, Reducing Power and TAC spectrophotometric assays were used for the assessment of antioxidative properties of methanolic extracts of leaves of 5 different Cleome species ( Cleome viscosa L. , C. simplicifolia (Camb.) Hook f. & Thoms , C. gynandra L. , C. chelidonii L.f. and C. speciosa Raf.). The purpose of this study was also to evaluate the comparability of antioxidant capacity measurements in Cleome species by the above assay. This study may provide some supplementary food option by some Cleome species.

Several methods have been described for determination of oxalic acid or oxalates in plants. These... more Several methods have been described for determination of oxalic acid or oxalates in plants. These methods include Indole-oxalic acid reaction, titration with KMnO4, rapid catalytic reduction by oxalic acid using Pyrocatechol violet (PCV) / Bromophenol blue / Victoria blue etc. In the present investigation, these methods are followed for determination of oxalic acid and compared for their sensitivity, simplicity and accuracy. It was observed that regression equation with R2=0.898 was Y=13.93X + 0.315 for Indole reagent and with R2=0.890, Y=-0.042X + 0.29 for Pyrocatechol-dichromate reaction. While, for Bromophenol blue-dichromate reaction with R2=0.876, an equation, log ∆A =0.373C + 0.694, was derived. Calibration graph for method with Victoria blue was linear and regression equation was log (Ai/Aj)= 0.291B + 0.348 with correlation coefficient, 0.915. The gravimetric method for estimation of oxalic acid i.e. titration with KMnO4, R2= 0.997 gave an equation Y= 0.278X + 0.111. The new ...

The present paper reports contents of 17 mineral elements in 4 liverworts and one hornwort from K... more The present paper reports contents of 17 mineral elements in 4 liverworts and one hornwort from Kolhapur. The amounts of iron and Si were found to be high in these cryptogams.

Salinity is one of the major abiotic stresses that adversely affect crop productivity and quality... more Salinity is one of the major abiotic stresses that adversely affect crop productivity and quality with increasing impact on the socioeconomic fabric and health, especially of the farming communities. Carbohydrates play numerous roles in living organisms, such as the storage and transport of energy and as a part of structural components. In the present investigation seedlings of Cymbopogon nardus (L.) Rendle; Pennisetum alopecuroides (L.) Spreng var. Mourdy and Vetiveria zizanioides (L.) Nash were treated with increasing concentrations of Sodium chloride (25, 50, and 100, 200 and 300 mM). It is found that the amount of soluble sugars in the leaves was increased at lower levels of salinity. The starch content in the leaves of all grass species was greatly influenced by salinity stress. It is evident that the starch content of the leaves of all the four grasses is increased with increasing the levels of salinity upto 100 mM NaCl. Maximum accumulation, 46.10% over control (100 mM) was o...

One of the most important stresses is alkali stress that effects plants growth and metabolism. Th... more One of the most important stresses is alkali stress that effects plants growth and metabolism. The effect of carbonates (NaHCO 3 , KHCO 3 and (NH 4) 2 CO 3) on seed germination and seedling growth in Portulaca oleracea L. was investigated. Germination percentage was decrease with increasing concentration of salts. Root length and dry weight were strongly reduced due to carbonate salts. Shoot length and fresh weight were slightly increased at lower concentration (25mM) of salts and then decreased at higher concentrations (50, 100, and 200mM). From the results, it appears that P. oleracea L. is rather sensitive to carbonate salts during germination and seedling growth.

BIOINFOLET - A Quarterly Journal of Life Sciences, 2010

Present study deals with SEM studies on seed surface morphology of six Cleome species viz Cleome ... more Present study deals with SEM studies on seed surface morphology of six Cleome species viz Cleome viscosa, C. gynandra, C. speciosa, C. simplicifolia, C. chelidonii and C. monophylla. Seeds of all the Cleome species were circular, curved and more or less horseshoe shaped with various seed ornamentations.

Chlorophyll and carotenoid concentrations were measured in five bryophytes from Panhala region of... more Chlorophyll and carotenoid concentrations were measured in five bryophytes from Panhala region of Kolhapur district. The concentration of chlorophyll b was greater than that of chlorophyll a in all bryophytes, while that of carotenoids was maximum in Asterella wallichiana and minimum in A. subtilis.

Salinity adversely affects crop productivity and the quality of yield. The present work was carri... more Salinity adversely affects crop productivity and the quality of yield. The present work was carried out to estimate the changes in nitrogen metabolism under the influence of NaCl salinity in four selected grasses. All the species recorded a decrease in nitrate nitrogen content at the highest concentration of salinity stress (300 mM). Its maximum increase was 14 and 19% (100 mM) for Cymbopogon nardus and Cynodon dactylon, respectively. The maximum increase in nitrite nitrogen found was 11% (200 mM) in Cymbopogon nardus, 12% (100 mM) in Cynodon dactylon. The concentration of proline and amides in the leaves of all the experimental grasses showed a positive correlation with increasing concentrations of salinity. The maximum increase in proline content was 81, 88, 126, and 68% in Cymbopogon nardus, Cynodon dactylon, Pennisetum alopecuroides, and Vetiveria zizanioides, respectively, at 300 mM NaCl salinity. The concentration of free amino acids in the leaves of all the experimental grass...

Acta Botanica Hungarica, 1990

Effect of NaCl salinity (25, 50,100 and 200 mM NaCl added to soil in pot culture) were investigat... more Effect of NaCl salinity (25, 50,100 and 200 mM NaCl added to soil in pot culture) were investigated on growth and some organic constituents in different parts of Catharanthus roseus G. Don, an important medicinal plant. It was observed that NaCl salinity reduced overall growth of this plant, which was highly significant at higher salinity levels only. The level of organic acids and total nitrogen in the leaves declined due to salt treatment. There was accumulation of soluble sugars in the leaves, particularly at lower salinity regimes and in the stem and roots at all salinity levels. Polyphenol metabolism in the plant appeared less influenced by salinity. NaCl salinity:induced both qualitative and quantitative changes in the alkaloids of C. roseus.

Salinity is one of the major abiotic stresses that adversely affect crop productivity and quality... more Salinity is one of the major abiotic stresses that adversely affect crop productivity and quality, and puts various problems to the plants either at the population, organism or even at the molecular level. In the present investigation seedlings of Cymbopogon nardus (L.) Rendle, Pennisetum alopecuroides (L.) Spreng var. Mourdy and Vetiveria zizanioides (L.) Nash were treated with increasing concentrations of sodium chloride i.e., 25, 50, 100, 200 and 300 mM and changes in the activities of catalase, peroxidase and acid phosphatase were determined. The activity of catalase was stimulated by 200 and 300 mM NaCl but it was initially decreased at lower levels of salinity. In Cymbopogon (36.30%), Cynodon (3.07%) and Pennisetum (0.94%), it was observed to be increased, while it was decreased in the leaves of Vetiveria (60.38%) at 300 mM NaCl concentration. The elevated activities of CAT under NaCl stress (300 mM and 200 mM) level probably came from an increased capacity for oxygen radical ...

Seed germination is a critical phase in the life cycle of crop plants and it is a subject to many... more Seed germination is a critical phase in the life cycle of crop plants and it is a subject to many environmental stresses (Mayer & Poljakoff Mayber, 1975; Sen, 1977). Predominance of sodium, chloride and sulfate ions in saline roils make the germination of crops difficult (Ayers, 1952; Strogonov, 1965)...

Advances in Plant Sciences, 2010

Journal of Photochemistry, 1981

Soil salinity and alkalinity are common restraints to crop productivity in arid and semi arid reg... more Soil salinity and alkalinity are common restraints to crop productivity in arid and semi arid regions. Saline and alkaline soils frequently cooccur in nature, but very few studies focus on the effects of various alkali stresses on plants. A study quantifying effect of carbonates salts (sodium bicarbonate, potassium bicarbonate and ammonium carbonate) on the activity of some antioxidative enzymes catalase, peroxidase, polyphenol oxidase and superoxide dismutase in the roots and leaves of Portulaca oleracea and Vigna aconitifolia grown under sand culture conditions was conducted. Results showed that the activity of all these enzymes increased under carbonate stress. This might have helped the plants to improve carbonate stress tolerance in both the plants.

Applications of antioxidants are increasing due to their multiple roles in removing harmful effec... more Applications of antioxidants are increasing due to their multiple roles in removing harmful effects of oxidative stress. For the present study TPC, DPPH, FRAP, Metal Chelating Ability, Reducing Power and TAC spectrophotometric assays were used for the assessment of antioxidative properties of methanolic extracts of leaves of 5 different Cleome species ( Cleome viscosa L. , C. simplicifolia (Camb.) Hook f. & Thoms , C. gynandra L. , C. chelidonii L.f. and C. speciosa Raf.). The purpose of this study was also to evaluate the comparability of antioxidant capacity measurements in Cleome species by the above assay. This study may provide some supplementary food option by some Cleome species.

Several methods have been described for determination of oxalic acid or oxalates in plants. These... more Several methods have been described for determination of oxalic acid or oxalates in plants. These methods include Indole-oxalic acid reaction, titration with KMnO4, rapid catalytic reduction by oxalic acid using Pyrocatechol violet (PCV) / Bromophenol blue / Victoria blue etc. In the present investigation, these methods are followed for determination of oxalic acid and compared for their sensitivity, simplicity and accuracy. It was observed that regression equation with R2=0.898 was Y=13.93X + 0.315 for Indole reagent and with R2=0.890, Y=-0.042X + 0.29 for Pyrocatechol-dichromate reaction. While, for Bromophenol blue-dichromate reaction with R2=0.876, an equation, log ∆A =0.373C + 0.694, was derived. Calibration graph for method with Victoria blue was linear and regression equation was log (Ai/Aj)= 0.291B + 0.348 with correlation coefficient, 0.915. The gravimetric method for estimation of oxalic acid i.e. titration with KMnO4, R2= 0.997 gave an equation Y= 0.278X + 0.111. The new ...

The present paper reports contents of 17 mineral elements in 4 liverworts and one hornwort from K... more The present paper reports contents of 17 mineral elements in 4 liverworts and one hornwort from Kolhapur. The amounts of iron and Si were found to be high in these cryptogams.

Salinity is one of the major abiotic stresses that adversely affect crop productivity and quality... more Salinity is one of the major abiotic stresses that adversely affect crop productivity and quality with increasing impact on the socioeconomic fabric and health, especially of the farming communities. Carbohydrates play numerous roles in living organisms, such as the storage and transport of energy and as a part of structural components. In the present investigation seedlings of Cymbopogon nardus (L.) Rendle; Pennisetum alopecuroides (L.) Spreng var. Mourdy and Vetiveria zizanioides (L.) Nash were treated with increasing concentrations of Sodium chloride (25, 50, and 100, 200 and 300 mM). It is found that the amount of soluble sugars in the leaves was increased at lower levels of salinity. The starch content in the leaves of all grass species was greatly influenced by salinity stress. It is evident that the starch content of the leaves of all the four grasses is increased with increasing the levels of salinity upto 100 mM NaCl. Maximum accumulation, 46.10% over control (100 mM) was o...

One of the most important stresses is alkali stress that effects plants growth and metabolism. Th... more One of the most important stresses is alkali stress that effects plants growth and metabolism. The effect of carbonates (NaHCO 3 , KHCO 3 and (NH 4) 2 CO 3) on seed germination and seedling growth in Portulaca oleracea L. was investigated. Germination percentage was decrease with increasing concentration of salts. Root length and dry weight were strongly reduced due to carbonate salts. Shoot length and fresh weight were slightly increased at lower concentration (25mM) of salts and then decreased at higher concentrations (50, 100, and 200mM). From the results, it appears that P. oleracea L. is rather sensitive to carbonate salts during germination and seedling growth.

BIOINFOLET - A Quarterly Journal of Life Sciences, 2010

Present study deals with SEM studies on seed surface morphology of six Cleome species viz Cleome ... more Present study deals with SEM studies on seed surface morphology of six Cleome species viz Cleome viscosa, C. gynandra, C. speciosa, C. simplicifolia, C. chelidonii and C. monophylla. Seeds of all the Cleome species were circular, curved and more or less horseshoe shaped with various seed ornamentations.

Chlorophyll and carotenoid concentrations were measured in five bryophytes from Panhala region of... more Chlorophyll and carotenoid concentrations were measured in five bryophytes from Panhala region of Kolhapur district. The concentration of chlorophyll b was greater than that of chlorophyll a in all bryophytes, while that of carotenoids was maximum in Asterella wallichiana and minimum in A. subtilis.

Salinity adversely affects crop productivity and the quality of yield. The present work was carri... more Salinity adversely affects crop productivity and the quality of yield. The present work was carried out to estimate the changes in nitrogen metabolism under the influence of NaCl salinity in four selected grasses. All the species recorded a decrease in nitrate nitrogen content at the highest concentration of salinity stress (300 mM). Its maximum increase was 14 and 19% (100 mM) for Cymbopogon nardus and Cynodon dactylon, respectively. The maximum increase in nitrite nitrogen found was 11% (200 mM) in Cymbopogon nardus, 12% (100 mM) in Cynodon dactylon. The concentration of proline and amides in the leaves of all the experimental grasses showed a positive correlation with increasing concentrations of salinity. The maximum increase in proline content was 81, 88, 126, and 68% in Cymbopogon nardus, Cynodon dactylon, Pennisetum alopecuroides, and Vetiveria zizanioides, respectively, at 300 mM NaCl salinity. The concentration of free amino acids in the leaves of all the experimental grass...

Acta Botanica Hungarica, 1990

Effect of NaCl salinity (25, 50,100 and 200 mM NaCl added to soil in pot culture) were investigat... more Effect of NaCl salinity (25, 50,100 and 200 mM NaCl added to soil in pot culture) were investigated on growth and some organic constituents in different parts of Catharanthus roseus G. Don, an important medicinal plant. It was observed that NaCl salinity reduced overall growth of this plant, which was highly significant at higher salinity levels only. The level of organic acids and total nitrogen in the leaves declined due to salt treatment. There was accumulation of soluble sugars in the leaves, particularly at lower salinity regimes and in the stem and roots at all salinity levels. Polyphenol metabolism in the plant appeared less influenced by salinity. NaCl salinity:induced both qualitative and quantitative changes in the alkaloids of C. roseus.

Salinity is one of the major abiotic stresses that adversely affect crop productivity and quality... more Salinity is one of the major abiotic stresses that adversely affect crop productivity and quality, and puts various problems to the plants either at the population, organism or even at the molecular level. In the present investigation seedlings of Cymbopogon nardus (L.) Rendle, Pennisetum alopecuroides (L.) Spreng var. Mourdy and Vetiveria zizanioides (L.) Nash were treated with increasing concentrations of sodium chloride i.e., 25, 50, 100, 200 and 300 mM and changes in the activities of catalase, peroxidase and acid phosphatase were determined. The activity of catalase was stimulated by 200 and 300 mM NaCl but it was initially decreased at lower levels of salinity. In Cymbopogon (36.30%), Cynodon (3.07%) and Pennisetum (0.94%), it was observed to be increased, while it was decreased in the leaves of Vetiveria (60.38%) at 300 mM NaCl concentration. The elevated activities of CAT under NaCl stress (300 mM and 200 mM) level probably came from an increased capacity for oxygen radical ...

Seed germination is a critical phase in the life cycle of crop plants and it is a subject to many... more Seed germination is a critical phase in the life cycle of crop plants and it is a subject to many environmental stresses (Mayer & Poljakoff Mayber, 1975; Sen, 1977). Predominance of sodium, chloride and sulfate ions in saline roils make the germination of crops difficult (Ayers, 1952; Strogonov, 1965)...

Advances in Plant Sciences, 2010