Zenodo (CERN European Organization for Nuclear Research), 2014
Plants are sessile and sensitive organisms that inevitably encounter a variety of abiotic stresse... more Plants are sessile and sensitive organisms that inevitably encounter a variety of abiotic stresses in nature. Abiotic stresses such as salinity, drought, heavy metal toxicity and extreme temperatures are critical factors that reduce crop yields by more than 50% worldwide. Sustainable agriculture in harsh environments requires an understanding of the ways that crop plants respond to both biotic and abiotic factors. The aim of the study was to determine the influence of water stress and heavy metals (Cd and Cr) singly and in combination on germination and seedling growth of two Green gram (VignaradiataL.Wilzec) cultivars.Seeds of two Green gram (Vignaradiata L. Wilczek) cv. ML-267, TM 96-2 cultivars were subjected to water stress by using PEG-6000 (-0.3 MPa ,-0.6 MPa ,-0.9 MPa and-1.2 MPa); Cadmium and Chromium(20,60,100,200,400ppm). The seed germination percentage decreased significantly with increasing concentration of Cd and Cr. Decreased osmotic potential caused a decrease in germination percentage. In comparison with the control treatment, the lowest germination rate values determined at-0.9MPa, 400 ppm Cd and 400 ppm Cr. Shoot and root length was reduced significantly with a rise in PEG and heavy metal levels. Cd concentration had a more depressing effect on the root than on the shoot growth. Interactive effects between heavy metal and water stress on dry weight and root length was significant. According to this study the interactive effect of both stresses were however, less than additive.
Overuse of non-renewable fossil fuels due to the population explosion urges us to focus on renewa... more Overuse of non-renewable fossil fuels due to the population explosion urges us to focus on renewable fuels such as bioethanol. It is a well-known fact that ethanol is useful as a blending product with common fuels such as petrol and diesel. This reduces the cost besides bringing down environmental pollution. Apart from chemical methods, bioethanol is generated from photosynthetic plants including algae, plant-based products, microbial organisms and their waste. Specifically, the production of ethanol from microalgal sources has been an attractive method in recent days. The reason behind using microalgal species is their simple structure with photosynthetic ability. In contrast, certain algal species often go disused in some regions. Hence, the production of ethanol from algal sources is one of the best waste management practices. Moreover, it is easy to improve the biomass in microalgal species by altering the physicochemical conditions such as light, pH, temperature, external suppl...
An ethno botanical survey was undertaken to collect information from Yanadi tribe of Cheruvukatta... more An ethno botanical survey was undertaken to collect information from Yanadi tribe of Cheruvukattasangham, Kavali, Nellore district, Andhra Pradesh, India. Kavali is a part of Eastern Ghats Mobile Belt which is a Precambrian fold belt extending over 600 km along the east coast of India from the North of Cuttack in Orissa to Nellore in Andhra Pradesh. Yanadi tribe is most prevalent in this region. Besides other usages of plants the practice of oral tradition for healthcare management of human and domesticated animals using herbal medicines is still prevalent among the inhabitants of the area. The study revealed that, the Yanadi tribe used 30 plant species belonging to 20 families to treat scorpion sting, snake bite, cold, helminthic diseases, body pains after delivery in women, dysentery etc. This paper reports the uses of medicinal plants used by tribal people in the form of juices, extracts, decoctions, pastes and powders. The information requires validation for clinical usage.
Heavy metal toxicity and water stress are the two frequently co-occurring abiotic stresses restra... more Heavy metal toxicity and water stress are the two frequently co-occurring abiotic stresses restraining the growth of crop plants as the metal contaminated sites are over alarmingly increasing due to industrial pollution. The present study is to evaluate the effect of heavy metals (Cadmium, Chromium), PEG induced water stress and their combination on antioxidative enzyme activities in two Pigeon pea cultivars LRG-41 and Yashoda-45. The activities of antioxidative enzymes Superoxide dismutase, Catalase, Ascorbate peroxidase, Polyphenol Oxidase and Glutathione Reductase registered higher values in both roots and shoots with all the single stress treatments when compared to their controls. The levels of antioxidative enzyme activities and lipid peroxidation were high in cv. Yashoda-45 than cv. LRG-41. Overall, cv Yashoda-45 has shown better tolerance to both heavy metal and water stress. These results may show the novel insight in to the responses associated with combined stress in the ...
The ever changing climatic f actors increase the chances of occurrence of abiotic stresses. Plant... more The ever changing climatic f actors increase the chances of occurrence of abiotic stresses. Plants, in nature are frequently exposed to single or combination of abiotic stresses simultaneously that limit crop yields. The aim of the study was to determine the influence of heavy metals( Cd, Cr) and water stress induced by polyethylene glycol(PEG) on germination and early seedling growth of two pigeon pea ( Cajanus cajan L.Millspaugh) cultivars. Seeds of two Pigeon pea ( Cajanus cajan L.Millspaugh) cv. LRG - 41 and Yashoda - 45 cultivars were s ubjected to water stress by using PEG – 6000 ( - 0.3 MPa , - 0.6 MPa , - 0.9 MPa and - 1.2 MPa); heavy metal stress by Cadmium and Chromium(20,60,100,200,400ppm). In comparison with the control, the lowest germination rate values were observed at - 0.9MPa, 400 ppm Cd and 400 ppm Cr. Shoot and root length was reduced significantly with a rise in PEG and heavy metal levels. Cd concentration had a more depressing effect on the root than on the shoo...
Pongamia pinnata is one of the commercially important tree species, which provides seed oil utili... more Pongamia pinnata is one of the commercially important tree species, which provides seed oil utilized in the production of bio-diesel. Seeds of this species were subjected to different osmotic potentials induced by polyethylene glycol (PEG-6000) in order to study their response to drought conditions. Seeds were germinated in petriplates at osmotic potentials 0, -0.2, -0.5 and -0.8 MPa. Germination at high level of water stress was inhibited, but the recovery of their germinability after transferring to distilled water was high in all cases except -0.8MPa. The root length, fresh weight, dry weight, relative water and protein contents showed a significant decrease than their corresponding controls. However, carbohydrate and proline contents in the water stressed seedlings showed a significant increase.
Medicinal Plants: Biodiversity, Sustainable Utilization and Conservation, 2020
Incidence of dengue in India increased drastically. Dengue fever is caused by arthropod-borne fla... more Incidence of dengue in India increased drastically. Dengue fever is caused by arthropod-borne flavivirus which have four serotypes that spread by the bite of mosquito Aedes aegypti. The objective of this study is to explore the available methods to prevent and control dengue fever in allopathy, homeopathy, Ayurvedic, and traditional medical systems. Primary and secondary sources of data are used in this study. Secondary source of data is Internet. Secondary data is used to analyze allopathy, homeopathy, and Ayurvedic medical systems. Primary data is used to analyze traditional medical system. This is collected by interviewing two traditional medical practitioners. Traditional system is cheaper compared to other systems and it is easy to administer and has no side effects. There is a need to conduct more studies, observations, and investigations to explore safe and effective ways to tackle epidemic diseases like dengue fever and its complications.
Zenodo (CERN European Organization for Nuclear Research), 2014
Plants are sessile and sensitive organisms that inevitably encounter a variety of abiotic stresse... more Plants are sessile and sensitive organisms that inevitably encounter a variety of abiotic stresses in nature. Abiotic stresses such as salinity, drought, heavy metal toxicity and extreme temperatures are critical factors that reduce crop yields by more than 50% worldwide. Sustainable agriculture in harsh environments requires an understanding of the ways that crop plants respond to both biotic and abiotic factors. The aim of the study was to determine the influence of water stress and heavy metals (Cd and Cr) singly and in combination on germination and seedling growth of two Green gram (VignaradiataL.Wilzec) cultivars.Seeds of two Green gram (Vignaradiata L. Wilczek) cv. ML-267, TM 96-2 cultivars were subjected to water stress by using PEG-6000 (-0.3 MPa ,-0.6 MPa ,-0.9 MPa and-1.2 MPa); Cadmium and Chromium(20,60,100,200,400ppm). The seed germination percentage decreased significantly with increasing concentration of Cd and Cr. Decreased osmotic potential caused a decrease in germination percentage. In comparison with the control treatment, the lowest germination rate values determined at-0.9MPa, 400 ppm Cd and 400 ppm Cr. Shoot and root length was reduced significantly with a rise in PEG and heavy metal levels. Cd concentration had a more depressing effect on the root than on the shoot growth. Interactive effects between heavy metal and water stress on dry weight and root length was significant. According to this study the interactive effect of both stresses were however, less than additive.
Overuse of non-renewable fossil fuels due to the population explosion urges us to focus on renewa... more Overuse of non-renewable fossil fuels due to the population explosion urges us to focus on renewable fuels such as bioethanol. It is a well-known fact that ethanol is useful as a blending product with common fuels such as petrol and diesel. This reduces the cost besides bringing down environmental pollution. Apart from chemical methods, bioethanol is generated from photosynthetic plants including algae, plant-based products, microbial organisms and their waste. Specifically, the production of ethanol from microalgal sources has been an attractive method in recent days. The reason behind using microalgal species is their simple structure with photosynthetic ability. In contrast, certain algal species often go disused in some regions. Hence, the production of ethanol from algal sources is one of the best waste management practices. Moreover, it is easy to improve the biomass in microalgal species by altering the physicochemical conditions such as light, pH, temperature, external suppl...
An ethno botanical survey was undertaken to collect information from Yanadi tribe of Cheruvukatta... more An ethno botanical survey was undertaken to collect information from Yanadi tribe of Cheruvukattasangham, Kavali, Nellore district, Andhra Pradesh, India. Kavali is a part of Eastern Ghats Mobile Belt which is a Precambrian fold belt extending over 600 km along the east coast of India from the North of Cuttack in Orissa to Nellore in Andhra Pradesh. Yanadi tribe is most prevalent in this region. Besides other usages of plants the practice of oral tradition for healthcare management of human and domesticated animals using herbal medicines is still prevalent among the inhabitants of the area. The study revealed that, the Yanadi tribe used 30 plant species belonging to 20 families to treat scorpion sting, snake bite, cold, helminthic diseases, body pains after delivery in women, dysentery etc. This paper reports the uses of medicinal plants used by tribal people in the form of juices, extracts, decoctions, pastes and powders. The information requires validation for clinical usage.
Heavy metal toxicity and water stress are the two frequently co-occurring abiotic stresses restra... more Heavy metal toxicity and water stress are the two frequently co-occurring abiotic stresses restraining the growth of crop plants as the metal contaminated sites are over alarmingly increasing due to industrial pollution. The present study is to evaluate the effect of heavy metals (Cadmium, Chromium), PEG induced water stress and their combination on antioxidative enzyme activities in two Pigeon pea cultivars LRG-41 and Yashoda-45. The activities of antioxidative enzymes Superoxide dismutase, Catalase, Ascorbate peroxidase, Polyphenol Oxidase and Glutathione Reductase registered higher values in both roots and shoots with all the single stress treatments when compared to their controls. The levels of antioxidative enzyme activities and lipid peroxidation were high in cv. Yashoda-45 than cv. LRG-41. Overall, cv Yashoda-45 has shown better tolerance to both heavy metal and water stress. These results may show the novel insight in to the responses associated with combined stress in the ...
The ever changing climatic f actors increase the chances of occurrence of abiotic stresses. Plant... more The ever changing climatic f actors increase the chances of occurrence of abiotic stresses. Plants, in nature are frequently exposed to single or combination of abiotic stresses simultaneously that limit crop yields. The aim of the study was to determine the influence of heavy metals( Cd, Cr) and water stress induced by polyethylene glycol(PEG) on germination and early seedling growth of two pigeon pea ( Cajanus cajan L.Millspaugh) cultivars. Seeds of two Pigeon pea ( Cajanus cajan L.Millspaugh) cv. LRG - 41 and Yashoda - 45 cultivars were s ubjected to water stress by using PEG – 6000 ( - 0.3 MPa , - 0.6 MPa , - 0.9 MPa and - 1.2 MPa); heavy metal stress by Cadmium and Chromium(20,60,100,200,400ppm). In comparison with the control, the lowest germination rate values were observed at - 0.9MPa, 400 ppm Cd and 400 ppm Cr. Shoot and root length was reduced significantly with a rise in PEG and heavy metal levels. Cd concentration had a more depressing effect on the root than on the shoo...
Pongamia pinnata is one of the commercially important tree species, which provides seed oil utili... more Pongamia pinnata is one of the commercially important tree species, which provides seed oil utilized in the production of bio-diesel. Seeds of this species were subjected to different osmotic potentials induced by polyethylene glycol (PEG-6000) in order to study their response to drought conditions. Seeds were germinated in petriplates at osmotic potentials 0, -0.2, -0.5 and -0.8 MPa. Germination at high level of water stress was inhibited, but the recovery of their germinability after transferring to distilled water was high in all cases except -0.8MPa. The root length, fresh weight, dry weight, relative water and protein contents showed a significant decrease than their corresponding controls. However, carbohydrate and proline contents in the water stressed seedlings showed a significant increase.
Medicinal Plants: Biodiversity, Sustainable Utilization and Conservation, 2020
Incidence of dengue in India increased drastically. Dengue fever is caused by arthropod-borne fla... more Incidence of dengue in India increased drastically. Dengue fever is caused by arthropod-borne flavivirus which have four serotypes that spread by the bite of mosquito Aedes aegypti. The objective of this study is to explore the available methods to prevent and control dengue fever in allopathy, homeopathy, Ayurvedic, and traditional medical systems. Primary and secondary sources of data are used in this study. Secondary source of data is Internet. Secondary data is used to analyze allopathy, homeopathy, and Ayurvedic medical systems. Primary data is used to analyze traditional medical system. This is collected by interviewing two traditional medical practitioners. Traditional system is cheaper compared to other systems and it is easy to administer and has no side effects. There is a need to conduct more studies, observations, and investigations to explore safe and effective ways to tackle epidemic diseases like dengue fever and its complications.
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