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Biology subjects

Kaushik, P.

Publications and source records attributed to Kaushik, P..

At least 19 recordsLinked to original sources

AI-Driven Breeding Enhances Stress Tolerance in High-Elevation Extremophytes: A Proof-of-Concept Study with Cross-Component Validation

High-elevation extremophytes exhibit unique survival strategies under harsh climatic conditions, making them attractive targets for sustainable agriculture and climate resilience research. In this study, we present a comprehensive proof-of-concept application that integrates multi-omics data, environmental simulation, and state-of-the-art machine learning techniques to predict and enhance stress tolerance in these resilient species. Our platform combines graph neural networks (GNNs) for modeling gene-environment interactions, digital twin simulations for plant growth prediction, quantum-inspired tensor networks for simulation fidelity, and generative adversarial networks (GANs) for proposing novel gene combinations. Using synthetic data emulating real-world conditions, we demonstrate that our platform can accurately predict plant growth and stress tolerance, with the GNN model achieving a Pearson correlation coefficient of 0.82. Furthermore, the GAN proposed gene combinations that improved predicted stress tolerance by up to 15%. Implemented as a modular backend and an interactive frontend, the application provides a scalable, data-driven roadmap to revolutionize plant breeding. Our results highlight the potential of AI-driven methodologies to accelerate extremophyte breeding, offering valuable insights into the interplay of genomic and environmental factors under extreme conditions, while emphasizing the need for future validation with real-world data.

bioinformatics↗

Transcriptome Analysis of Aegle marmelos (L.) Correa Fruit and Leaf Tissues: An Underexploited Fruit Tree

Aegle marmelos (L) Correa is both a horticultural and medicinally important tree in South-East Asia. Both of its fruits and leaves have several medicinal values including treatment of certain chronic diseases. Despite its importance, the genomic resource of this tree is very scarce. The objectives of this work were to conduct a de novo transcriptome assembly of leaf tissue from A. marmelos, locally known as bael in India. Comparison studies were conducted between the fruit transcriptome and leaf transcriptome of A. marmelos. This is the first time that the fruit transcriptome of A. marmelos has been reported in the literature. There were 47 million clean reads were generated for fruit tissue and 34 million clean reads of leaf tissue. The reads were assembled to 61, 860 unigenes. Around 83% of fruit transcripts were mapped to the original assembly whereas 89% of leaf transcripts were mapped to the original assembly. Whereas, in terms of molecular function, the gene ontology (GO) terms were related to binding, cellular activity and transporter activity and genes expressed only in leaf and fruit tissue were 14,578 and 11086, respectively, Overall, RNA sequencing may be an effective method for determining the pathway and genes in the underexploited fruit crops.

genomics↗

Comprehensive Invitro and Insilico Analysis of Secondary Metabolites from Datura metel: Promising Anti-Alzheimer's Therapeutics.

This research investigates secondary metabolites from Datura metel as potential anti-Alzheimers therapies. In vitro techniques isolated extracts for AD pathology targeting, with in silico analysis identifying gene targets for prevention. Apigenin, Luteolin, and Withanolide A were studied, each with 300 potential gene targets and core gene counts of 54, 52, and 58 respectively. Lipinskis Rule assessed their pharmacological properties, showing good absorption but limited blood-brain barrier penetration. Protein interaction mapping revealed shared targets among the compounds. GO enrichment and KEGG pathway analysis highlighted their impact on biological processes and pathways, suggesting their anti-Alzheimers potential. Luteolin notably reduced A{beta}1-42 levels by up to 35.2% (*p<0.05) in SH-SY5Y cells, positioning it and Withanolide A as promising multi-functional Alzheimers medications. These findings underscore the significance of Datura phytochemicals in AD prevention and treatment.

neuroscience↗

Unraveling the Interplay between Phytochemicals and Rhizosphere Bacteria in Ficus racemosa

Plant-microbe interactions in the rhizosphere play crucial roles in plant health and ecosystem functioning. Despite extensive research, gaps persist in understanding the relationship between phytochemicals and rhizosphere bacteria, particularly in species like Ficus racemosa. This study aims to investigate this interplay by characterizing the diversity and abundance of rhizosphere bacteria in Ficus racemosa and assessing the influence of phytochemical composition on microbial community structure and function. Through a multidisciplinary approach integrating microbiology and phytochemistry, our findings contribute to a holistic understanding of rhizosphere ecology and inform strategies for optimizing plant-microbe interactions in agricultural and environmental contexts.

microbiology↗

Combining Unity with machine vision to create low latency, flexible, and simple virtual realities

O_LIIn recent years, virtual reality arenas have become increasingly popular for quantifying visual behaviors. By using the actions of a constrained animal to control the visual scenery, the animal is provided the perception of moving through a simulated environment. As the animal is constrained in space, this allows detailed behavioral quantification. Additionally, as the world is generally computer-generated this allows for mechanistic quantification of visual triggers of behavior. C_LIO_LIWe created a novel virtual arena combining machine vision with the gaming engine Unity. For tethered flight, we enhanced an existing multi-modal virtual reality arena, MultiMoVR (Kaushik et al., 2020) but tracked hoverfly wing movements using DeepLabCut-live (DLC-live, Kane et al., 2020). For trackball experiments, we recorded the motion of a ball that a tethered crab was walking on using FicTrac (Moore et al., 2014). In both cases, real-time tracking was interfaced with Unity to control the movement of the tethered animals avatars in the virtual world. We developed a user-friendly Unity Editor interface, CAVE, to simplify experimental design and data storage without the need for coding. C_LIO_LIWe show that both the DLC-live-Unity and the FicTrac-Unity configurations close the feedback loop effectively with small delays, less than 50 ms. Our FicTrac-Unity integration highlighted the importance of closed-loop feedback by reducing behavioral artifacts exhibited by the crabs in open-loop scenarios. We show that Eristalis tenax hoverflies, using the DLC-live-Unity integration, navigate towards flowers. The effectiveness of our CAVE interface is shown by implementing experimental sequencing control based on avatar proximity to virtual structures. C_LIO_LIOur results show that combining Unity with machine vision tools such as DLC-live and FicTrac provides an easy and flexible virtual reality (VR) environment that can be readily adjusted to new experiments and species. This can be implemented programmatically in Unity, or by using our new tool CAVE, which allows users to design and implement new experiments without programming in code. We provide resources for replicating experiments and our interface CAVE via GitHub, together with user manuals and instruction videos, for sharing with the wider scientific community. C_LI

animal behavior and cognition↗

Insecticidal Effects of Datura Species against Major Agricultural Pests

Insecticides derived from plants provide environmentally friendly and sustainable options as alternatives to synthetic chemicals. This investigation delves into the insecticidal capabilities of two distinct Datura species, namely, Datura alba and Datura stramonium, in combatting significant pests such as Spodoptera litura, Bemesia tabaci, and Callosobruchus maculatus. Datura plants have a well-documented history of medicinal use and are recognized for their abundant Tropane alkaloid content, which acts as an innate defense mechanism against pests. Hence, the current investigation involved the extraction of chemical compounds from the leaves, flowers, seeds, and roots of both Datura stramonium and Datura alba. Subsequently, these extracts were assessed for efficacy using Spodoptera litura larvae, Bemesia tabaci, and Callosobruchus maculatus in bioassays. The larvicidal experiments encompassed a range of concentrations (3%, 5%, 10%), with larval mortality being documented at multiple time intervals: 6, 12, 24, 48, and 72 hours. The findings from our investigation uncover the notable insecticidal attributes of root, leaf, flower, and seed extracts from both Datura alba and Datura stramonium against these larvae. These extracts demonstrated distinct mortality rates at various concentrations and exposure durations. This comprehensive analysis imparts crucial knowledge regarding the insecticidal qualities of Datura species and their prospective contributions to sustainable pest control practices. The observed effectiveness of these plant extracts against a spectrum of significant pests hints at their potential as ecological alternatives within integrated pest management strategies.

plant biology↗

In-silico Discovery of Genetic Diversity in Cucumis sativus var. hardwickii: A Wild Relative of Cultivated Cucumber

Genome-wide sequencing data play an important role in evaluating the genomic level differences between superior and poor-quality crop plants and improving our understanding of molecular association with desired traits. We analyzed the obtained 92,921,066 raw reads from genome-wide resequencing of Cucumis sativus var. hardwickii through in-silico approaches and mapped to the reference genome of Cucumis sativus to identify the genome-wide single nucleotide polymorphisms (SNPs) and Single nucleotide variations (SNV). Here, we report 19, 74,213 candidate SNPs including 1,33,468 insertions and 1,43,237 deletions and 75 Indels genome-wide. A total of 2228224 identified variants were classified into four classes including 0.01% sequence alteration, 5.94% insertion, 6.37% deletion and 87.66% SNV respectively. These variations can be a major source of phenotypic diversity and sequence variation within the species. Overall, the discovery of SNPs and genomic variants may help predict the plant response to certain environmental factors and can be utilized to improve crop plants economically important traits.

bioinformatics↗

Inferring the Demographic History of Japanese Eel (Anguilla japonica) from Genomic Data: Insights for Conservation and Fisheries Management

O_LIAssessing the status or population size of species is a key task for wildlife conservation and the sustainable management of harvested species. In particular, assessing historical changes in population size provides an evolutionary perspective on current population dynamics and can help distinguish between anthropogenic and natural causes for population decline. C_LIO_LIJapanese eel (Anguilla japonica) is an endangered yet commercially important catadromous fish species. Here we assess the demographic history of Japanese eel using the pairwise and multiple sequentially Markovian coalescent methods. C_LIO_LIThe analyses indicate a reduction in effective population size (Ne) from 38 000 to 10 000 individuals between 4 and 1 Ma, followed by an increase to 80 000 individuals, between 1 Ma and 22-30 kya. Approximately 22-30 kya there is evidence for a reduction in Ne to approximately 60 000 individuals. These events are likely due to changes in environmental conditions, such as sea level and oceanic currents, especially around the last glacial maximum (19-33 kya). C_LIO_LIThe results of this study suggest that Japanese eel has experienced at least two population bottlenecks, interspersed by a period of population growth. This pattern of demographic history may make Japanese eel sensitive to current and future population declines. Conservation management of Japanese eel should focus on practical ways to prevent further population decline and the loss of genetic diversity that is essential for the species to adapt to changing environmental conditions such as climate change. C_LI

evolutionary biology↗

Identification of Thermotolerant Rice Genotypes with Allele Coding at Seedling Stage

Rice-The most important plant in the world to ensure food security. Heat is one of the main factors that greatly limit rice production. With the increasing global warming, industrialization there is a great effect on climate change which requires us to see various alternatives for strains that are more tolerant to heat so that some techniques are developed to filter a large number of genotypes for high temperature tolerance. Here we report the standardization of Temperature Induction Response (TIR) technique to identify thermotolerant rice genotypes. The phenotypic characteristics of Rice due to high temperature is calculated with germination (%), growth of the seedling and molecular analysis is also considered. The heat stress is provided to the plants with the help of TIR protocol with the adjustment of temperature to lethal (55{degrees}C) and sub-lethal levels (38-55{degrees}C) in a TIR chamber with alterations in humidity. Of the 74 genotypes screened, 14 showed thermo tolerance caused by high temperatures. Both tolerant and sensitive genotypes were separated based on their survival percentages. The tolerant class are selected based on the growth and development of genotypes having high survival percentage and also their shoot and root lengths, fresh and dry weights are compared to the heat tolerant checks N22, Dular and Nipponbare. These genotypes have intrinsic heat tolerance and thus can be explored as a source of donors in breeding programs intended for global warming. The molecular markers which are identified to be linked with heat tolerant class through allele code are quite helpful and can be used in marker assisted breeding approach to attain heat tolerance in cultivated varieties.

molecular biology↗

Effect of Pre-harvest Calcium Chloride and Salicylic Acid Spray on Morphological and Biochemical Traits of Guava (Psidium guajava)

Guava is a small, tropical fruit tree grown in various tropical and subtropical regions. Salicylic acid (SA) is a phenolic compound that enhances disease resistance and delays the fruit ripening process. Calcium is an essential cell component that delays ripening, particularly softening of the fruit. The effect of foliar spray of CaCl2, and SA, on the physical and biochemical traits of guava was investigated in the present investigation. The application of CaCl2 2% + SA 2mM was more effective as compared with both when applied alone. The data were recorded on fruit set (%), fruit weight (g), fruit length (cm), fruit diameter (cm), fruit yield (kg), ripening period (days), TSS, acidity, total sugar, ascorbic acid, nitrogen, phosphorus, potassium. CaCl2 2% + SA 2mM was showed better performance in all cases, followed by SA 2mM and CaCl2 2%. Overall, this work determines the influence on guava's essential traits by pre-harvest calcium chloride and salicylic acid.

biochemistry↗

Effect of Silicon Application on Leaf mineral Composition of Eucalyptus

Eucalyptus is a commonly planted tree in North India and its cultivation area is increasing. Leaves of Eucalyptus are used for tea which has healing properties and many other economic uses. Silicon is the second most abundant element in the earths crust next to oxygen. Silicon (Si) can improve photosynthesis, decrease transpiration, increase water use efficiency and provide resistance against biotic and abiotic stress. The clear information was not available regarding Silicon nourishment in tree species like Eucalyptus. Although a positive in plant development and overall dry matter production was noticed in Eucalyptus with Si application. The amount of nitrogen (N), phosphorus (P), and potassium (K) were inclined leaf whereas Calcium (Ca) and magnesium (Mg) content was not affected by Si application potassium silicate (K2SiO3). Finally results revealed that upon Si application significant increase in the leaf mineral content in almost all genotypes was recorded. Correlation studies revealed that leaf N and P were highly and significantly correlated with leaf copper (Cu) and iron (Fe) content, leaf Mg and leaf Cu were positively and significantly correlated with leaf N, manganese (Mn) and Fe content, leaf Mn and Fe content were highly and significantly correlated with leaf N, Mg and Cu content. To our detailed knowledge this is the first ever study conducted in Eucalyptus. Here the influence of potassium silicate on popular North Indian cultivars leaf mineral content Nevertheless, more studies are required to analyze the effect of Si application in tree species like Eucalyptus.

biochemistry↗

Transcriptome Analysis of the Eggplant Fruits Overexpressing a Gene of Chlorogenic Acid Pathway

Chlorogenic acid is the primary phenolic acids present in Eggplant fruits. For the generation of chlorogenic acid in the eggplant hydroxycinnamoyl CoA-quinate transferase (SmHQT), is a central enzyme that catalyzes the reaction to the chlorogenic acid production. Although a precise function of SmHQT is not well defined in the eggplant fruit. In this study, the overexpression of SmHQT in the eggplant fruits flesh was studied using the agroinfiltration technique. Furthermore, to determine the differences at the genomic level RNA-seq analysis was performed, and its results showed that 415 genes of the phenylpropanoid pathway were upregulated in the transgenic fruit. Also, it was determined that the differentially expressed genes were dominantly related to phenylpropanoid pathway along with cell expansion, and cytokinin. The agroinfiltrated fruit exhibited more than twice the chlorogenic content in the normal fruit. Overall, the result provides new insight into the eggplant chlorogenic content increment at the molecular level and unseal the opportunities to design new strategies for the improvement of chlorogenic content as nutrition in eggplant.

genomics↗

Studies on the Biosorption Potential of Copper by Rhizopus arrhizus Biomass

Due to rapid industrialization and global urbanization, heavy metal pollution of water reservoirs is a severe environmental threat. Moreover, the removal of these heavy metal ions of copper from the wastewaters using conventional methods are costly, time taking, and less effective. Whereas, biosorption proved as a better alternative technique over the traditional methods for the removal of metal ions from the water bodies. Biological materials or biosorbents have been used for the adsorption of metal ions from the aquatic system. Therefore, Rhizopus arrhizus (living biomass) for the biosorption of copper (Cu) metal was used as biosorbent in the present investigation. The pH and temperature at which biosorption occurs are critical. In case of R. arrhizus the maximum adsorption was recorded at pH 7.0, and a temperature of 35{degrees}C.Whereas, the maximum adsorption capacity (Q value) of 100 mg biomass of Rhizopus arrhizus was observed as 94.46 % at 80 ppm concentration. The maximum adsorption capacity of 200 mg biomass of test fungi was reported as 97.32 % at the metal concentration of 80 ppm. Maximum Q value (biosorption capacity, i.e. mg metal per g biosorbent) was 37.785 mg/g at an 80-ppm concentration in case of 100 mg biomass. In the case of 200 mg biomass, the maximum Q value was 19.464 mg/g observed at 80 ppm concentration. Overall, the present study showed that 100 mg and 200 mg Rhizopus arrhizus biomass acts as an excellent adsorbing material for the adsorption of Cu metal ions.

microbiology↗

Understanding the genetics of important traits in quality protein maize (Zea mays L.) by Line by Tester analysis

Maize (Zea mays L.) is among the top ten most valuable crops and livestock products. Maize demand and production are continuously rising. The nutritionally rich quality proteins maize (QPM) has almost two times as much lysine as well as tryptophan, amino acids which then the conventional maize varieties. In this study, genetics of important traits in quality protein maize were determined using a Line by Tester matting design. The 45 hybrids were obtained via Line by Tester crossing of 15 lines and 3 testers. The parents and their hybrids were evaluated under two environments. A significant amount of variation was recorded for most of the traits studied. Parental genotypes L2, L6, T2, L8, L7 and L14, exhibited negative and considerable general combining ability (GCA) effects for days to flowering and maturity. L7 x T2, L13 x T3, L10 x T1, L1 x T1, L9 x T2, L5 x T1, L12 x T2, L11 x T3, L10 x T3, L14 x T1 and L6 x T1 were identified with suitable yield and component traits. Crosses L5 x T1, L3 x T1, L12 x T2, L7 x T3, L1 x T2 and L13 x T1 were identified for quality traits. Heterosis over the mid parent crosses L13 x T1 showed highest negative and significant followed by L6 x T1, L12 x T2, L14 x T2 and L2 x T1 for days to 50 per cent tasselling. A significant correlation for the lysine content was determined between F1 mean and specific combining ability (SCA) effects. Overall, this work provides the useful insights into the genetics of important agronomical and biochemical traits of quality protein maize.

genetics↗

Classification of Indian States and Union Territories based on their Soil Macronutrient and Organic Carbon Profiles

Soil fertility determines the successful development of a plant, and therefore it is important to achieve food security. Imbalanced and inadequate use of chemical fertilizers, irregular irrigation and harmful cultural practices deplete the soil profile nutrient profile, which is critical for the successful crop production. This study presents the results of the classification of the states across India based on their soil macronutrient profile. The entanglement coefficient of Unweighted Pair Group Method with Arithmetic Mean (UPGMA) and the neighbour-joining method was 0.81. Absolute correlation values were determined among the different classes of the soil nitrogen content and the corresponding classes of the soil phosphorus content. The K-mean clustering method divided the states and union territories into the three clusters. Overall, this works represents the grouping of Indian soils based on their soil macronutrient and organic carbon content.

ecology↗

A VTA GABAergic computational model of dissociated reward prediction error computation in classical conditioning

Classical Conditioning is a fundamental learning mechanism where the Ventral Striatum is generally thought to be the source of inhibition to Ventral Tegmental Area (VTA) Dopamine neurons when a reward is expected. However, recent evidences point to a new candidate in VTA GABA encoding expectation for computing the reward prediction error in the VTA. In this system-level computational model, the VTA GABA signal is hypothesised to be a combination of magnitude and timing computed in the Peduncolopontine and Ventral Striatum respectively. This dissociation enables the model to explain recent results wherein Ventral Striatum lesions affected the temporal expectation of the reward but the magnitude of the reward was intact. This model also exhibits other features in classical conditioning namely, progressively decreasing firing for early rewards closer to the actual reward, twin peaks of VTA dopamine during training and cancellation of US dopamine after training.

neuroscience↗

Evaluation of Genetic Diversity in Cultivated and Exotic Germplasm Sources of Faba Bean Using Important Morphological Traits

Background and ObjectiveFaba bean is an important crop for achieving nutritional food security, but there is very limited diversity in the cultivated varieties of faba bean. Moreover, genetic diversity is vital for its use in faba bean genetic imporvement. Material and MethodsHere we determined the diversity in the sixty-four genotypes of faba bean of different agro-ecological origins. Plants were grown in randomized block design in three replications. Further, the genotypes were characterized based on the ten morphological traits. ResultsHighly significant differences were determined for all of the studied traits. Whereas, the number of cluster per plant was positively correlated with the pods per plants. Moreover, the trait number of cluster per plant determined the most substantial positive effect on seed yield. ConclusionsOverall, our results indicate a wide range of variability for further selection and improvement of faba bean ideotype.

genetics↗

Sequence Analysis and Homology Modelling of SmHQT Protein, a Key Player in Chlorogenic Acid Pathway of Eggplant

Eggplant is an important vegetable that belongs to family Solanaceae. Fruits of eggplant are rich in phenolic acids. Chlorogenic acid makes up to 90 per cent of total phenolic acids present in the eggplants fruit flesh. Eggplant hydroxycinnamoyl CoA-quinate (SmHQT) is the central enzyme that modulates the last step of the chlorogenic acid pathway of eggplant. Here, we have analysed the sequence of eggplant SmHQT protein in eggplant. The sequence obtained from the NCBI was aligned using MUSCLE. After that, homology modelling was performed using MODELLER 9v15. Model with Dope Z-Score of -1.596 was selected and verified for viability under real conditions using several online tools. Also, the docking was performed with this model. Overall, this could be useful in developing eggplant varieties rich in phenolic acids especially chlorogenic acid.

bioinformatics↗