Nisha Nisha - Academia.edu (original) (raw)

Papers by Nisha Nisha

Plant Cell Reports

Drought stress-induced crop loss has been considerably increased in recent years because of globa... more Drought stress-induced crop loss has been considerably increased in recent years because of global warming and changing rainfall pattern. Natural drought-tolerant plants entail the recruitment of a variety of metabolites and low molecular weight proteins to negate the detrimental effects of drought stress. Dehydrin (DHN) proteins are one such class of proteins that accumulate in plants during drought and associated stress conditions. These proteins are highly hydrophilic and perform multifaceted roles in the protection of plant cells during drought stress conditions. Evidence gathered over the years suggests that DHN proteins impart drought stress tolerance by enhancing the water retention capacity, elevating chlorophyll content, maintaining photosynthetic machinery, activating ROS detoxification, and promoting the accumulation of compatible solutes, among others. Overexpression studies have indicated that these proteins can be effectively targeted to mitigate the negative effects of drought stress and for the development of drought stress-tolerant crops to feed the ever-growing population in the near future. In this review, we describe the mechanism of DHNs mediated drought stress tolerance in plants and their interaction with several phytohormones to provide an in-depth understanding of DHNs function.

Biomolecules

Salinity stress is one of the major threats to agricultural productivity across the globe. Resear... more Salinity stress is one of the major threats to agricultural productivity across the globe. Research in the past three decades, therefore, has focused on analyzing the effects of salinity stress on the plants. Evidence gathered over the years supports the role of ethylene as a key regulator of salinity stress tolerance in plants. This gaseous plant hormone regulates many vital cellular processes starting from seed germination to photosynthesis for maintaining the plants’ growth and yield under salinity stress. Ethylene modulates salinity stress responses largely via maintaining the homeostasis of Na+/K+, nutrients, and reactive oxygen species (ROS) by inducing antioxidant defense in addition to elevating the assimilation of nitrates and sulfates. Moreover, a cross-talk of ethylene signaling with other phytohormones has also been observed, which collectively regulate the salinity stress responses in plants. The present review provides a comprehensive update on the prospects of ethylen...

New data on pathotype distribution and mefenoxam tolerance of Plasmopara halstedii in Hungary, 2020

Sunflower downy mildew (Plasmopara halstedii) is one of the major diseases that can be controlled... more Sunflower downy mildew (Plasmopara halstedii) is one of the major diseases that can be controlled by using resistant cultivars and seed dressings; however, several isolates have developed tolerance to some fungicides and the resistance has also been overcome by new pathotypes. We aimed to examine the pathotype distribution in Hungary and to test the pathotypes' mefenoxam sensitivity. The isolates, which provided the basis of the research were collected from different regions of Hungary between 2014 and 2017 and, later, their pathotypes were identified. According to our results, pathotype 704 was one of the most widespread in Hungary, but pathotype 730, pathotype 724 and pathotype 700 were also detected. Seven out of ten isolates caused relatively high disease rates on the mefenoxam-treated and inoculated sunflower plants with P. halstedii. The pathogen has a high genetic variability which enhances the possibility to develop fungicide resistance. Furthermore, this variability can...

Plants

Two neem-derived pesticides were examined under in vitro and in vivo conditions to test their eff... more Two neem-derived pesticides were examined under in vitro and in vivo conditions to test their efficacy in controlling Plasmopara halstedii pathotype 704, a causal agent of downy mildew in sunflower. All the tested concentrations of neem leaf extract and the highest concentration of commercial neem product significantly reduced the sporangial germination under in vitro conditions. In in vivo experiment, 3-days old pre-treated seedlings with both concentrations of neem leaf extract and the highest concentration of commercial product showed a significant reduction in the infection indicating possible systemic effect of neem. When the seedlings were treated following the infection with P. halstedii (i.e., post-treatment), only the highest concentrations of neem leaf extract and the commercial product showed a significant reduction in the infection indicating curative effect of neem. Possibilities for the control of P. halstedii with neem-derived pesticides are discussed.

Journal of Evolution of Medical and Dental Sciences

BACKGROUND Pruritus is the primary clinical symptom of ICP. It may considerably impair the patien... more BACKGROUND Pruritus is the primary clinical symptom of ICP. It may considerably impair the patient's quality of life causing sleep deprivation, psychological suffering and even suicidal thoughts. Pruritus is most severe in the evening, with a predilection for the palms of the hands and soles of the feet, and is not associated with any specific skin lesions. The main biochemical alterations are elevations of serum bile acids and aminotransferase activities. We wanted to study the outcome of pregnancy complicated by obstetric cholestasis in terms of maternal and foetal outcome. METHODS This is a prospective study done over a period of 18 months in 80 booked antenatal patients who complained of pruritus during their pregnancy. They were followed, and maternal and perinatal outcomes recorded. Appropriate statistical analysis was used for result. RESULTS Incidence of obstetric cholestasis in our hospital was 5%. Majority of the patients were primigravida (60%) and presented at gestational age between 32-36 weeks. Maternal morbidities are due to sleep disturbance (68.75%), dyslipidaemia (48.75%), deranged coagulation profile (22.5%), PPH (8.75%), increased operative interference (57.5%) and PROM (23.75%). Perinatal outcomes were MSL (23.75%), prematurity (25%), stillbirth (2.5%), NICU admission (18.75%), foetal distress (20%) and LBW (18.75%). Maximum number of patients were delivered between 37-38 weeks. CONCLUSIONS Active and timely intervention is needed to avoid unnecessary and early intervention and prevent the risk of prematurity.

International Journal of Livestock Research

Journal of Applied and Natural Science

In present investigation of anionic (fluoride, chloride, bromide, phosphate and sulphate) change ... more In present investigation of anionic (fluoride, chloride, bromide, phosphate and sulphate) change in surface and ground water due to industrial effluents by ion chromatography technique has been determined in area of Jammu using Ion-chromatograph (IC-850).Surface and ground water samples were taken before and after discharge of industrial effluents. All required standards for calibration and all the samples (water as well as industrial effluents) have been prepared by using ultra pure water obtained from M Millipore. Both the peak height (PH) and peak area (PA) were used to assess the IC signals. All the peaks for anions were clear with good resolution and there were no interactions between them. The total time for anion analysis was recorded to be about 28 minutes .Anions like fluoride exhibited drastic change in concentration in surface and ground water samples taken after discharge of industrial effluents.

INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY

Cloud computing is a paradigm shift in the way we define software and hardware, and architect our... more Cloud computing is a paradigm shift in the way we define software and hardware, and architect our IT solutions. The emerging cloud technologies, due to their various unique and attractive properties, are evolving with tremendous momentum and rapidly being adopted throughout the IT industry. In this dissertation, we identify security challenges that arise in integration of cloud-based services, and present a set of novel solutions to address them. We analyze the security of our solutions, demonstrate their usage and effectiveness, and evaluate their performance by extensive experimentation. To address the problem of security in untrusted cloud storage, we introduce a hybrid solution of AES and file encryption. The key used in AES algorithm is generated randomly from the file's data which is sent by the cloud provider. After implementing the proposed methodology, we have seen an improvement in the processing time and cost which will increase the overall efficiency of the system.Â

International Journal of Pure and Apllied Mathematics

On the basis of the micro continuum theory, a theoretical analysis of the effects of pressure dis... more On the basis of the micro continuum theory, a theoretical analysis of the effects of pressure distribution using couple stress on the squeeze film behavior of parabolic inclined slider bearing is presented. The modified Reynolds equation governing the squeeze film pressure is derived by using the stokes constitutive equation and the analysis taking into account the squeezing effect with no slip at the porous interface comparing with the traditional Newtonian lubricant case, the effects of couple stress characteristics by the couple stress parameter signify an improvement in the steady state performance. We are considering the parabolic inclined bearing to analyze the effect of pressure and compared to the inclined plane bearing, step inclined bearing, the parabolic shaped slider bearing lubricated with couple stress fluids results in a higher pressure distribution. The performances are emphasized especially for the bearing with smaller film heights.

LEGUME RESEARCH - AN INTERNATIONAL JOURNAL

Fenugreek or Methi is a well known leguminous crop. It is a plant of immense importance due to va... more Fenugreek or Methi is a well known leguminous crop. It is a plant of immense importance due to various medicinal properties. It comprises many bioactive compounds which are used in pharmaceuticals and nutraceutical industries. It included in diet as a vegetable with its leaves and as a spice with seeds. Present study aims at the estimation of micronutrients such as, copper, iron, magnesium and zinc in seeds of different varieties of fenugreek by using atomic absorption spectrophotometer. The results of present study revealed that there are significant variations in micronutrient content among the varieties. Iron and magnesium contect was comparatively higher in GM-2(2.97±0.14 mg/g and 17.68 ±0.15 mg/g, respectively) than the others, copper was highest in RMT-351 10.13± 0.18 and zinc 2.85±0.16 in RMT -303.

International Journal of Agricultural Science and Research

A study was conducted in Ri-bhoi District of Meghalaya, with the objective of studying the extent... more A study was conducted in Ri-bhoi District of Meghalaya, with the objective of studying the extent of adoption of improved ginger cultivation practices, by the farmers. For the purpose of the study 120 ginger growers were selected. Ex post facto research was followed. The collected data were processed through descriptive statistics, correlation analysis and regression analysis. The results revealed that, majority of the respondents (72.50%) had medium level of adoption. Correlation analysis revealed that, variables namely family type, size of operational land holding, occupational status, mass media exposure, extension contact, risk preference and economic motivation. Further, for regression analysis, the variables which were found to have significant relationship with the dependent variable were considered. Thus, this signified that, seven variables taken together could explain 54.1 percent, of the total variation in respondent's extent of adoption.

Med. Chem. Commun.

A series of N-alkyl tethered C-5 functionalized bis-isatins were synthesized and evaluated for an... more A series of N-alkyl tethered C-5 functionalized bis-isatins were synthesized and evaluated for antimicrobial activity against pathogenic microorganisms. The preliminary evaluation studies revealed the compound 4t, with an optimal combination...

In computer graphics, there are many surface detection algorithms. When we view a picture contain... more In computer graphics, there are many surface detection algorithms. When we view a picture containing non-transparent objects and surfaces, then we cannot see those objects from view which is behind from objects closer to eye. We must remove these hidden surfaces to get a realistic screen image. The identification and removal of these surfaces is called Hidden-surface problem. In this paper I review some visible surface detection algorithms like Z buffer method, Area subdivision method, Scan line method etc. Keywords² Visible surface detection algorithms, Z buffer, Area subdivision, Scan line method etc. I.

The information on status and distribution of small and rare animals are always necessary for des... more The information on status and distribution of small and rare animals are always necessary for designing, implementation and evaluation of conservation measures was the reason behind origin of this study on the Indian Giant Flying squirrel. Since available information is small and scattered, an attempt was made to collect information from the peoples who are directly or indirectly related with wildlife / forest services. To go ahead with our research on this species, we prepared a structured questionnaire and sent to the individuals through an online survey tool, to whom we know and further the same were also posted on social website for voluntary participation. We have set the time duration of the survey and at the end we received a total of 66 responses from a diverse group of individuals; most of them belong to Gujarat. Responses were analyzed to reach a conclusion that the flying squirrel population has declined from the past few decades. Abstract

International Journal of Computers Technology, Apr 24, 2015

Cloud computing is a broad solution that delivers IT as a service. Cloud computing uses the inter... more Cloud computing is a broad solution that delivers IT as a service. Cloud computing uses the internet and the central remote servers to support different data and applications. It is an internet based technology. It permits the users to approach their personal files at any computer with internet access. The cloud computing flexibility is a function of the allocation of resources on authority's request. It represents all the complexities of the network which may include everything from cables, routers, servers, data centers and all such other devices. Cloud based systems saves data off multiple organizations on shared hardware systems. In this paper the attempt to secure data from unauthorized access. The Method of data security is AES algorithm for providing data security by encrypting the given data based on the AES. It is based on a design principle known as a substitution-permutation network, and is fast in both Software and Hardware. The algorithms used in AES are so simple that they can be easily implemented using heap processors and a minimum amount of memory and this data then can only be decrypted by authorized person by using his private key.

ChemInform, 2015

ABSTRACT Despite recent developments in combinatorial chemistry and related techniques for facili... more ABSTRACT Despite recent developments in combinatorial chemistry and related techniques for facilitating drug discovery and development, natural products continue to play a prominent and evolving role for the development of new therapeutic agents. Pyrrole containing natural products constitute an integral part of this strategy. The structure and reactivity of pyrrole along with its propensity to polymerize renders it a relative speciality and certainly not something for the faint of heart. Besides, the well known tetrapyrrolic "Pigments of life," other fascinating natural products incorporating multiple copies of the pyrrole ring system are attracting the attention of organic medicinal chemists and must be acknowledged.

RSC Adv., 2015

The present review article is focused on the medicinal potential and total synthesis of prodigios... more The present review article is focused on the medicinal potential and total synthesis of prodigiosins witnessed in the last decade. The aim will be to provide an inspiration to the marvels and pit falls of constructing the polypyrrole heterocycles with in the complex systems.

In computer graphics we have many polygon filling algorithms. In this paper I review scan line po... more In computer graphics we have many polygon filling algorithms. In this paper I review scan line polygon filling algorithms using inside-outside test, boundary fill algorithm and flood fill algorithm. Scan line filling algorithm, finds an intersection of the scan line with polygon edges and inside-outside test is used to find the inside and outside region of a polygon. Boundary fill is a recursive algorithm. This paper has a review on various polygon filling algorithms.