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Mandeep Kaur

Bio: Mandeep Kaur is an academic researcher from Panjab University, Chandigarh. The author has contributed to research in topics: Digital watermarking & Digital image. The author has an hindex of 13, co-authored 96 publications receiving 476 citations. Previous affiliations of Mandeep Kaur include Department of Biotechnology & University Institute of Engineering and Technology, Panjab University.


Papers
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Journal ArticleDOI
TL;DR: The experiments show that the proposed facial expression recognition framework yields relatively little degradation in recognition rate due to facial images wearing glasses or loss of feature points during tracking.
Abstract: paper presents a new idea for detecting an unknown human face in input imagery and recognizing his/her facial expression. The objective of this research is to develop highly intelligent machines or robots that are mind implemented. A Facial Expression Recognition system needs to solve the following problems: detection and location of faces in a cluttered scene, facial feature extraction, and facial expression classification. The universally accepted five principal emotions to be realized are: Angry, Happy, Sad, Disgust and Surprise along with neutral. Principal Component Analysis (PCA) is implemented with Singular value decomposition (SVD) for Feature Extraction to determine principal emotions. The experiments show that the proposed facial expression recognition framework yields relatively little degradation in recognition rate due to facial images wearing glasses or loss of feature points during tracking.

61 citations

Journal ArticleDOI
TL;DR: Interestingly, Fe starvation leads to a significant temporal increase of glutathione S-transferase at both the transcriptional level and enzymatic activity level, which indicates the involvement of glutATHione in response to Fe stress in wheat roots.
Abstract: Iron (Fe) is an essential micronutrient for all organisms. In crop plants, Fe deficiency can decrease crop yield significantly; however, our current understanding of how major crops respond to Fe deficiency remains limited. Herein, the effect of Fe deprivation at both the transcriptomic and metabolic level in hexaploid wheat was investigated. Genome-wide gene expression reprogramming was observed in wheat roots subjected to Fe starvation, with a total of 5854 genes differentially expressed. Homoeologue and subgenome-specific analysis unveiled the induction-biased contribution from the A and B genomes. In general, the predominance of genes coding for nicotianamine synthase, yellow stripe-like transporters, metal transporters, ABC transporters, and zinc-induced facilitator-like protein was noted. Expression of genes related to the Strategy II mode of Fe uptake was also predominant. Our transcriptomic data were in agreement with the GC-MS analysis that showed the enhanced accumulation of various metabolites such as fumarate, malonate, succinate, and xylofuranose, which could be contributing to Fe mobilization. Interestingly, Fe starvation leads to a significant temporal increase of glutathione S-transferase at both the transcriptional level and enzymatic activity level, which indicates the involvement of glutathione in response to Fe stress in wheat roots. Taken together, our result provides new insight into the wheat response to Fe starvation at the molecular level and lays the foundation to design new strategies for the improvement of Fe nutrition in crops.

45 citations

Journal ArticleDOI
TL;DR: Functional characterization of the wheat transporter, TaABCC13 a homolog of maize LPA1 confirms its role in glutathione-mediated detoxification pathway and is able to utilize adenine biosynthetic intermediates as a substrate.
Abstract: The ABCC multidrug resistance associated proteins (ABCC-MRP), a subclass of ABC transporters are involved in multiple physiological processes that include cellular homeostasis, metal detoxification, and transport of glutathione-conjugates. Although they are well-studied in humans, yeast, and Arabidopsis, limited efforts have been made to address their possible role in crop like wheat. In the present work, 18 wheat ABCC-MRP proteins were identified that showed the uniform distribution with sub-families from rice and Arabidopsis. Organ-specific quantitative expression analysis of wheat ABCC genes indicated significantly higher accumulation in roots (TaABCC2, TaABCC3, and TaABCC11 and TaABCC12), stem (TaABCC1), leaves (TaABCC16 and TaABCC17), flag leaf (TaABCC14 and TaABCC15), and seeds (TaABCC6, TaABCC8, TaABCC12, TaABCC13, and TaABCC17) implicating their role in the respective tissues. Differential transcript expression patterns were observed for TaABCC genes during grain maturation speculating their role during seed development. Hormone treatment experiments indicated that some of the ABCC genes could be transcriptionally regulated during seed development. In the presence of Cd or hydrogen peroxide, distinct molecular expression of wheat ABCC genes was observed in the wheat seedlings, suggesting their possible role during heavy metal generated oxidative stress. Functional characterization of the wheat transporter, TaABCC13 a homolog of maize LPA1 confirms its role in glutathione-mediated detoxification pathway and is able to utilize adenine biosynthetic intermediates as a substrate. This is the first comprehensive inventory of wheat ABCC-MRP gene subfamily.

45 citations

Journal ArticleDOI
TL;DR: This work is the first comprehensive study of wheat YSL transporters and would be an important resource for prioritizing genes towards wheat biofortification.
Abstract: Oligopeptide transporters (OPT) are integral cell membrane proteins that play a critical role in the transport of small peptides, secondary amino acids, glutathione conjugates, and mineral uptake. In the present study, 67 putative wheat yellow stripe-like transporter (YSL) proteins belonging to the subfamily of OPT transporters were identified. Phylogeny analysis resulted in the distribution of wheat YSLs into four discrete clades. The highest number of YSLs was present on the A genome and the chromosome 2 of hexaploid wheat. The identified wheat YSL genes showed differential expression in different tissues and during grain development suggesting the importance of this subfamily. Gene expression pattern of TaYSLs during iron starvation experiments suggested an early high transcript accumulation of TaYS1A, TaYS1B, TaYSL3, TaYSL5, and TaYSL6 in roots. In contrast, delayed expression was observed in shoots for TaYS1A, TaYS1B, TaYSL5, TaYSL12, and TaYSL19 as compared to control. Further, their expression under biotic and abiotic response emphasized their alternative functions during the plant growth and development. In conclusion, this work is the first comprehensive study of wheat YSL transporters and would be an important resource for prioritizing genes towards wheat biofortification.

41 citations

Journal ArticleDOI
20 Jul 2017
TL;DR: Prolonged exposure to chlorpyrifos enhanced ROS formation, finally resulted in oxidative damage to cell and inhibited antioxidant capacities in the fish tissues.
Abstract: Study on the chronic effects of an organophosphate chlorpyrifos inducing oxidative stress in freshwater culturable carp Ctenopharyngodon idellus has been made on exposure to sub lethal concentration micro g L and micro g L of the pesticide for and days Antioxidants viz catalase CAT superoxide dismutase SOD reduced glutathione GSH glutathione s transferase GST and lipid peroxidation LPO in the liver kidney and gills of the fish were analyzed Studies revealed that the enhanced productions of reactive oxygen species ROS lead to oxidative damage to lipids amp proteins and inhibit antioxidant defence system of fish The activity of LPO has followed an increasing trend and a decline in the activity of CAT SOD and GSH at both the concentrations throughout the experiment However no definite trend in the activity of GST has been observed Prolonged exposure to chlorpyrifos enhanced ROS formation finally resulted in oxidative damage to cell and inhibited antioxidant capacities in the fish tissues

36 citations


Cited by
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01 Jan 2002

9,314 citations

Dissertation
01 Jan 1975

2,119 citations

01 Jan 2001
TL;DR: In this paper, local mussels, Perna viridis, were transplanted from a relatively clean site to various polluted sites in Hong Kong, and different antioxidant parameters including glutathione S transferase (GST), superoxide dismutase (SOD), catalase (CAT), glutathion peroxidase (GPx), glutthione reductase (GR), NADPH DT-diaphorase (DT-d), and lipid peroxidation were quantified, and tissue concentrations of benzo[a]pyrene (B
Abstract: Local mussels, Perna viridis, were transplanted from a relatively clean site to various polluted sites in Hong Kong. After a 30-day field exposure, different antioxidant parameters including glutathione S transferase (GST), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR), NADPH DT-diaphorase (DT-d), glutathione (GSH) and lipid peroxidation were quantified, and tissue concentrations of benzo[a]pyrene (B[a]P) as well as a total of five polycyclic aromatic hydrocarbons (PAHs) with potential carcinogenicity were determined for individual mussels. Results indicated that: (1) tissue concentrations of B[a]P and total PAHs from the same site were highly variable; (2) gill SOD, DT-d and lipid peroxidation showed no response to tissue pollutants: (3) the majority of the antioxidant parameters were induced by increasing tissue pollutant concentrations; and (4) amongst the various parameters, oxyradical scavenger GSH [ best correlated with tissue concentrations of pollutants.

371 citations