Anjali Joshi - Academia.edu (original) (raw)

Papers by Anjali Joshi

Maydica, Jun 4, 2021

Genetic diversity in maize is incessantly being reduced due to modern breeding practices. This ne... more Genetic diversity in maize is incessantly being reduced due to modern breeding practices. This necessitates the creation of diverse pre-breeding lines with desirable allelic introgression from wild germplasm. With a view to enhance maize germplasm, 169 teosinte derived maize inbred lines were developed and studied to assess the genetic diversity in 14 morphological traits and to classify the lines into different clusters. Analysis of variance revealed significant variation amongst the genotypes for all the traits. High heritability with high genetic advance were observed for anthesis silking interval, flag leaf length, plant height, ear per plant, ear length, ear diameter, number of kernel row/ear, number of kernel/row and thousand kernel weight; high heritability and moderate genetic advance were observed for days to anthesis and days to silking while for flag leaf width, node bearing cob and grain yield/plant moderate heritability and high genetic advance were observed. Principal component analysis revealed that first five components had greater than one eigenvalue and accounted for 66.50% of the total phenotypic variation. The values of Euclidean dissimilarity matrices ranged from 6.28-366.88 and genotypes were grouped into fourteen clusters at a Euclidean distance of 62.5. The cluster 8 had early maturing genotypes; cluster 8, 10 and 11 had genotypes with shorter anthesis silking interval and cluster 2, 3 and 4 possessed genotypes superior with respect to yield contributing traits. A significant positive correlation of 0.499 was observed between morphological and molecular data indicating that the two data sets reflect the same genetic diversity pattern and can be utilized simultaneously to capture diversity present in maize germplasm Abbreviations MDS-Multidimensional scaling;

DAE SOLID STATE PHYSICS SYMPOSIUM 2018, 2019

Cadmium Selenide (CdSe) and Zinc doped Cadmium Selenide nanostructures were synthesized by the re... more Cadmium Selenide (CdSe) and Zinc doped Cadmium Selenide nanostructures were synthesized by the reaction of Cadmium acetate [Cd(CH 3 COO) 2 .2H 2 O], Sodium Selenosulphate, hydrazine hydrate (N 2 H 4 .H 2 O) in distilled water and in presence of NaOH by sonochemical method. The crystal structure, surface morphology and optical properties of the pure CdSe and Zn doped CdSe were examined by using X-Ray diffractometer, Scanning Electron Microscopy, Fourier Transform Infrared, UV-Vis Spectrophotometer. According to X-Ray diffraction study showed the hexagonal crystal structure, with decrease in doping concentration in CdSe, the particle size decreases. Scanning Electron Microscopy images were used to examine surface morphology, phase structure. FTIR results show the bonding on the surface of CdSe nanoparticles. UV-Vis spectroscopy result shows the band gap energy was found to vary between 1.81 and 2.25 eV due to the incorporation of Zn. The as-synthesized CdSe composite efficiently catalyzed the photodegradation of methylene blue in aqueous solutions under visible-light irradiation, exhibiting higher photocataytic activity.

DAE SOLID STATE PHYSICS SYMPOSIUM 2018, 2019

The efficiency of biological sensitivity in medical therapy purely depends on the development of ... more The efficiency of biological sensitivity in medical therapy purely depends on the development of the precise and suitable drug delivery systems. The present work was purposeful toward the formation of biocomposites using biological probe liposomes and nano carrier carbon nanofiber in order to developed deal with nanostructures which can be to be used as vectors for molecules modified weapon toward diseases. Liposomal insitu nanostructure was prepared by thin film hydration method in the presence of functionalized carbon nanofibers. This was studied by TEM (Transmission Electron Microscope), Raman spectra, FTIR, DLS (Dynamic light scattering) and the stability of the nanobiocomposites was measured by zeta potential.

Fabrication and Self-Assembly of Nanobiomaterials, 2016

Abstract Nanostructures fabricated from biological building blocks have attracted a lot of resear... more Abstract Nanostructures fabricated from biological building blocks have attracted a lot of researchers’ attention due to their potential application in nanobiotechnology. Self-assembly of such nanostructures is a spontaneous process by which molecules/nanophase entities will materialize into organized aggregates. Many biomolecules, such as proteins and peptides, can interact and self-assemble into highly ordered supramolecular architectures with functionalities that form helical ribbons, fibrous scaffolds, and many more. Proteins and peptides show good interaction with metals, semiconductors, and ions, paving the way for design of new smart materials. Deoxyribonucleic acid (DNA) is a biomolecule that can be combined with other entities through chemical self-assembly to form desired nanomaterials. The unique structure and self-recognition property of DNA can be utilized to generate self-assembling DNA nanostructures of specific shapes using a “bottom-up” approach. The unique information storage capacity of DNA is used for various applications, for example, as a logic sensor for multiple sequence signals. These nanostructures can be studied by circular dichroism spectroscopy, Fourier transform infrared spectroscopy, rheology, cryogenic transmission electron microscopy, small-angle X-ray scattering and atomic force microscopy, fluorescence resonance energy transfer, and laser scanning confocal microscopy. In this chapter we highlight the preparation of such nanostructures as nanotubes, nanofibrils, nanowires, spherical vesicles, and hybrids through self-assembly, the subsequent improvement of their properties and their possible applications.

AIP Conference Proceedings, 2015

Carbon nanofibers (CNFs) are one of allotropes of carbon, consists of graphene layers arrangement... more Carbon nanofibers (CNFs) are one of allotropes of carbon, consists of graphene layers arrangement in the form of stacked cones or like a cup diameter in nanometer and several millimeters in length. Their extraordinary mechanical, chemical and electronic properties are due to their small size. CNFs have been successfully applied in field of medicine in variety of diagnostic methods. They proven to be an excellent system for drug delivery, tissue regeneration, biosensor etc. This research focuses the applications of CNFs in all fields of Agriculture. In the we treated some fungal disease seed of maize and barley using functionalised CNFs. We find that the tested seeds grow just as well as the healthy seeds whereas the untreated fungal disease seeds, by themselves show very poor germination and seedling growth. This simple experiment shows the extraordinary ability of Carbon nanofibers in carrying effectively inside the germinated seeds.

BioNanoScience, 2020

Oxidized multi-walled carbon nanotubes (MWCNTs) having a diameter of 14-30 nm and length of 200-3... more Oxidized multi-walled carbon nanotubes (MWCNTs) having a diameter of 14-30 nm and length of 200-300 nm were used to the prime rice seeds with different concentrations of MWCNT (70, 80 and 90 μg/mL). The effects on germination, growth, anatomy, physiology, yield, quantitative seed components and toxicity (using human cell lines) were evaluated. The treatments, when extended to realistic field environments, resulted in significantly better yield and productivity of rice. The MWCNT-treated plants had denser stomata and larger root length, which resulted in faster growth and facilitated both water and mineral uptake, thus boosting the crop yield. Increased vascular tissues enhanced the chlorophyll content and photosynthetic activity. No toxic effects of MWCNT were observed in the DNA of the CNT-treated plants, and in the human cell lines, treated with harvested grain extract of MWCNT-primed plants. This study provides some new insights into the use of nanomaterials in plants and their potential benefits in agriculture thus ushering in a new organic-inorganic interface.

Maydica, Jun 4, 2021

Genetic diversity in maize is incessantly being reduced due to modern breeding practices. This ne... more Genetic diversity in maize is incessantly being reduced due to modern breeding practices. This necessitates the creation of diverse pre-breeding lines with desirable allelic introgression from wild germplasm. With a view to enhance maize germplasm, 169 teosinte derived maize inbred lines were developed and studied to assess the genetic diversity in 14 morphological traits and to classify the lines into different clusters. Analysis of variance revealed significant variation amongst the genotypes for all the traits. High heritability with high genetic advance were observed for anthesis silking interval, flag leaf length, plant height, ear per plant, ear length, ear diameter, number of kernel row/ear, number of kernel/row and thousand kernel weight; high heritability and moderate genetic advance were observed for days to anthesis and days to silking while for flag leaf width, node bearing cob and grain yield/plant moderate heritability and high genetic advance were observed. Principal component analysis revealed that first five components had greater than one eigenvalue and accounted for 66.50% of the total phenotypic variation. The values of Euclidean dissimilarity matrices ranged from 6.28-366.88 and genotypes were grouped into fourteen clusters at a Euclidean distance of 62.5. The cluster 8 had early maturing genotypes; cluster 8, 10 and 11 had genotypes with shorter anthesis silking interval and cluster 2, 3 and 4 possessed genotypes superior with respect to yield contributing traits. A significant positive correlation of 0.499 was observed between morphological and molecular data indicating that the two data sets reflect the same genetic diversity pattern and can be utilized simultaneously to capture diversity present in maize germplasm Abbreviations MDS-Multidimensional scaling;

DAE SOLID STATE PHYSICS SYMPOSIUM 2018, 2019

Cadmium Selenide (CdSe) and Zinc doped Cadmium Selenide nanostructures were synthesized by the re... more Cadmium Selenide (CdSe) and Zinc doped Cadmium Selenide nanostructures were synthesized by the reaction of Cadmium acetate [Cd(CH 3 COO) 2 .2H 2 O], Sodium Selenosulphate, hydrazine hydrate (N 2 H 4 .H 2 O) in distilled water and in presence of NaOH by sonochemical method. The crystal structure, surface morphology and optical properties of the pure CdSe and Zn doped CdSe were examined by using X-Ray diffractometer, Scanning Electron Microscopy, Fourier Transform Infrared, UV-Vis Spectrophotometer. According to X-Ray diffraction study showed the hexagonal crystal structure, with decrease in doping concentration in CdSe, the particle size decreases. Scanning Electron Microscopy images were used to examine surface morphology, phase structure. FTIR results show the bonding on the surface of CdSe nanoparticles. UV-Vis spectroscopy result shows the band gap energy was found to vary between 1.81 and 2.25 eV due to the incorporation of Zn. The as-synthesized CdSe composite efficiently catalyzed the photodegradation of methylene blue in aqueous solutions under visible-light irradiation, exhibiting higher photocataytic activity.

DAE SOLID STATE PHYSICS SYMPOSIUM 2018, 2019

The efficiency of biological sensitivity in medical therapy purely depends on the development of ... more The efficiency of biological sensitivity in medical therapy purely depends on the development of the precise and suitable drug delivery systems. The present work was purposeful toward the formation of biocomposites using biological probe liposomes and nano carrier carbon nanofiber in order to developed deal with nanostructures which can be to be used as vectors for molecules modified weapon toward diseases. Liposomal insitu nanostructure was prepared by thin film hydration method in the presence of functionalized carbon nanofibers. This was studied by TEM (Transmission Electron Microscope), Raman spectra, FTIR, DLS (Dynamic light scattering) and the stability of the nanobiocomposites was measured by zeta potential.

Fabrication and Self-Assembly of Nanobiomaterials, 2016

Abstract Nanostructures fabricated from biological building blocks have attracted a lot of resear... more Abstract Nanostructures fabricated from biological building blocks have attracted a lot of researchers’ attention due to their potential application in nanobiotechnology. Self-assembly of such nanostructures is a spontaneous process by which molecules/nanophase entities will materialize into organized aggregates. Many biomolecules, such as proteins and peptides, can interact and self-assemble into highly ordered supramolecular architectures with functionalities that form helical ribbons, fibrous scaffolds, and many more. Proteins and peptides show good interaction with metals, semiconductors, and ions, paving the way for design of new smart materials. Deoxyribonucleic acid (DNA) is a biomolecule that can be combined with other entities through chemical self-assembly to form desired nanomaterials. The unique structure and self-recognition property of DNA can be utilized to generate self-assembling DNA nanostructures of specific shapes using a “bottom-up” approach. The unique information storage capacity of DNA is used for various applications, for example, as a logic sensor for multiple sequence signals. These nanostructures can be studied by circular dichroism spectroscopy, Fourier transform infrared spectroscopy, rheology, cryogenic transmission electron microscopy, small-angle X-ray scattering and atomic force microscopy, fluorescence resonance energy transfer, and laser scanning confocal microscopy. In this chapter we highlight the preparation of such nanostructures as nanotubes, nanofibrils, nanowires, spherical vesicles, and hybrids through self-assembly, the subsequent improvement of their properties and their possible applications.

AIP Conference Proceedings, 2015

Carbon nanofibers (CNFs) are one of allotropes of carbon, consists of graphene layers arrangement... more Carbon nanofibers (CNFs) are one of allotropes of carbon, consists of graphene layers arrangement in the form of stacked cones or like a cup diameter in nanometer and several millimeters in length. Their extraordinary mechanical, chemical and electronic properties are due to their small size. CNFs have been successfully applied in field of medicine in variety of diagnostic methods. They proven to be an excellent system for drug delivery, tissue regeneration, biosensor etc. This research focuses the applications of CNFs in all fields of Agriculture. In the we treated some fungal disease seed of maize and barley using functionalised CNFs. We find that the tested seeds grow just as well as the healthy seeds whereas the untreated fungal disease seeds, by themselves show very poor germination and seedling growth. This simple experiment shows the extraordinary ability of Carbon nanofibers in carrying effectively inside the germinated seeds.

BioNanoScience, 2020

Oxidized multi-walled carbon nanotubes (MWCNTs) having a diameter of 14-30 nm and length of 200-3... more Oxidized multi-walled carbon nanotubes (MWCNTs) having a diameter of 14-30 nm and length of 200-300 nm were used to the prime rice seeds with different concentrations of MWCNT (70, 80 and 90 μg/mL). The effects on germination, growth, anatomy, physiology, yield, quantitative seed components and toxicity (using human cell lines) were evaluated. The treatments, when extended to realistic field environments, resulted in significantly better yield and productivity of rice. The MWCNT-treated plants had denser stomata and larger root length, which resulted in faster growth and facilitated both water and mineral uptake, thus boosting the crop yield. Increased vascular tissues enhanced the chlorophyll content and photosynthetic activity. No toxic effects of MWCNT were observed in the DNA of the CNT-treated plants, and in the human cell lines, treated with harvested grain extract of MWCNT-primed plants. This study provides some new insights into the use of nanomaterials in plants and their potential benefits in agriculture thus ushering in a new organic-inorganic interface.