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Harish J, Venkateshbabu G, Prasannakumar MK, Devanna P, Mahesh HB, Balasundara DC, Swamy SD, Kunjeti SG, Manjunatha C, Puneeth ME, Lohithaswa HC, Jambhulkar PP. Stalk rot species diversity and molecular phylogeny associated with diseased maize in India. World J Microbiol Biotechnol 2024; 40:185. [PMID: 38683236 DOI: 10.1007/s11274-024-03991-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 04/16/2024] [Indexed: 05/01/2024]
Abstract
Stalk rot disease is a major constraint in maize production and till date reported to be caused by two to three species of phytopathogenic fungi but, in our present study, we disclose the first report of stalk rot is caused by complex species of phytopathogens, which belongs to five different genera. Therefore, to substantiate these findings, a total of 105 diseased samples of maize were collected from 21 different locations in six different geographical locations of India from which 48 isolates were used for the research study. Morphological features such as pigmentation, colony color, type of mycelium and pattern of mycelium was examined using macro and microscopic methods. A total of 11 different spp. of pathogens belonging to the five different genera: Fusarium verticillioides (56.25%), F. equiseti (14.5%), F. andiyazi (6.25%), F. solani (2.08%), F. proliferatum (2.08%), F. incarnatum (2.08%), Lasidioplodia theobrame (6.25%), Exserohilum rostrtum (4.16%), Nigrospora spp. (4.16%). and Schizophyllum commune (2.08%) were identified by different housekeeping genes (ITS, TEF-1α, RPB2 and Actin). Fusarium verticillioides, F. equiseti and F. andiyazi were major pathogens involved in stalk rot. This is the first report on F. proliferatum, F. solani, F. incarnatum, Lasidioplodia theobrame, Exserohilum rostrtum, Nigrospora spp. and Schizophyllum commune causing stalk rot of maize and their distribution in the different states of India. Studies on population dynamics of PFSR will enhance the understanding of pathogen behavior, virulence, or its association with different pathogens across India, which will facilitate the development of resistant maize genotypes against the PFSR.
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Affiliation(s)
- J Harish
- PathoGenOmics Lab, Department of Plant Pathology, GKVK, University of Agricultural Sciences, Bangalore, Karnataka, 560065, India
| | - Gopal Venkateshbabu
- PathoGenOmics Lab, Department of Plant Pathology, GKVK, University of Agricultural Sciences, Bangalore, Karnataka, 560065, India
| | - M K Prasannakumar
- PathoGenOmics Lab, Department of Plant Pathology, GKVK, University of Agricultural Sciences, Bangalore, Karnataka, 560065, India.
| | - Pramesh Devanna
- Rice Pathology Laboratory, All India Coordinated Rice Improvement Programme, Gangavathi, University of Agricultural Sciences, Raichur, Karnataka, 584104, India
| | - H B Mahesh
- Department of Genetics and Plant Breeding, GKVK, University of Agricultural Sciences, Bangalore, Karnataka, 560065, India
| | - D C Balasundara
- Corteva Agriscience India Private Limited, Kallinaikanahalli, Thondebhavi Post Chikkaballapura District, Karnataka, 561213, India
| | - S Dharanendra Swamy
- Monsanto India Ltd. (A Subsidiary of Bayer AG), Kallinayakanahalli, Thondebhavi Post, Chikkaballapura, Karnataka, 561213, India
| | - Sridhara G Kunjeti
- PathoGenOmics Lab, Department of Plant Pathology, GKVK, University of Agricultural Sciences, Bangalore, Karnataka, 560065, India
| | - C Manjunatha
- ICAR-National Bureau of Agricultural Insect Resources, Bangalore, 560024, India
| | - M E Puneeth
- PathoGenOmics Lab, Department of Plant Pathology, GKVK, University of Agricultural Sciences, Bangalore, Karnataka, 560065, India
| | - H C Lohithaswa
- AICRP on Pigeonpea, ZARS, GKVK, University of Agricultural Sciences, Bangalore, Karnataka, 560065, India
| | - Prashant P Jambhulkar
- Department of Plant Pathology, Rani Lakshmi Bai Central Agricultural University, Jhansi, 284003, Uttar Pradesh, India
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Manjunatha C, Rastogi CK, Manmadha Rao B, Girish Kumar S, Varun S, Raitani K, Maurya G, Karthik B, Swathi C, Sadrzadeh M, Khosla A. Advances in Hierarchical Inorganic Nanostructures for Efficient Solar Energy Harvesting Systems. ChemSusChem 2024:e202301755. [PMID: 38478710 DOI: 10.1002/cssc.202301755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 03/10/2024] [Indexed: 04/17/2024]
Abstract
The urgent need to address the global energy and environmental crisis necessitates the development of efficient solar-power harvesting systems. Among the promising candidates, hierarchical inorganic nanostructures stand out due to their exceptional attributes, including a high specific surface area, abundant active sites, and tunable optoelectronic properties. In this comprehensive review, we delve into the fundamental principles underlying various solar energy harvesting technologies, including dye-sensitized solar cells (DSSCs), photocatalytic, photoelectrocatalytic (water splitting), and photothermal (water purification) systems, providing a foundational understanding of their operation. Thereafter, the discussion is focused on recent advancements in the synthesis, design, and development of hierarchical nanostructures composed of diverse inorganic material combinations, tailored for each of these solar energy harvesting systems. We meticulously elaborate on the distinct synthesis methods and conditions employed to fine-tune the morphological features of these hierarchical nanostructures. Furthermore, this review offers profound insights into critical aspects such as electron transfer mechanisms, band gap engineering, the creation of hetero-hybrid structures to optimize interface chemistry through diverse synthesis approaches, and precise adjustments of structural features. Beyond elucidating the scientific fundamentals, this review explores the large-scale applications of the aforementioned solar harvesting systems. Additionally, it addresses the existing challenges and outlines the prospects for achieving heightened solar-energy conversion efficiency.
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Affiliation(s)
- C Manjunatha
- Centre for Nanomaterials and Devices, Department of Chemistry, RV College of Engineering, Bengaluru, India
| | | | - B Manmadha Rao
- Department of Physics, VIT-AP University, Amaravati, Andhra Pradesh, India
| | - S Girish Kumar
- Centre for Nanomaterials and Devices, Department of Chemistry, RV College of Engineering, Bengaluru, India
| | - S Varun
- Department of Chemical Engineering, RV College of Engineering, Bengaluru, India
| | - Karthik Raitani
- Centre for Advanced Studies, Dr. A. P. J. Abdul Kalam Technical University, Lucknow, India
| | - Gyanprakash Maurya
- Centre for Advanced Studies, Dr. A. P. J. Abdul Kalam Technical University, Lucknow, India
| | - B Karthik
- Department of Chemical Engineering, RV College of Engineering, Bengaluru, India
| | - C Swathi
- Department of Chemical Engineering, RV College of Engineering, Bengaluru, India
| | - Mohtada Sadrzadeh
- Department of Mechanical Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Canada
| | - Ajit Khosla
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, Province, China
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Nair MM, Kumar SHK, Jyothsna S, Sundaram KT, Manjunatha C, Sivasamy M, Alagu M. Stem and leaf rust-induced miRNAome in bread wheat near-isogenic lines and their comparative analysis. Appl Microbiol Biotechnol 2022; 106:8211-8232. [PMID: 36385566 DOI: 10.1007/s00253-022-12268-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 10/13/2022] [Accepted: 10/24/2022] [Indexed: 11/18/2022]
Abstract
Wheat rusts remain a major threat to global wheat production and food security. The R-gene-mediated resistance has been employed as an efficient approach to develop rust-resistant varieties. However, evolution of new fungal races and infection strategies put forward the urgency of unravelling novel molecular players, including non-coding RNAs for plant response. This study identified microRNAs associated with Sr36 and Lr45 disease resistance genes in response to stem and leaf rust, respectively. Here, small RNA sequencing was performed on susceptible and resistant wheat near-isogenic lines inoculated with stem and leaf rust pathotypes. microRNA mining in stem rust-inoculated cultivars revealed a total of distinct 26 known and 7 novel miRNAs, and leaf rust libraries culminated with 22 known and 4 novel miRNAs. The comparative analysis between two disease sets provides a better understanding of altered miRNA profiles associated with respective R-genes and infections. Temporal differential expression pattern of miRNAs pinpoints their role during the progress of infection. Differential expression pattern of miRNAs among various treatments as well as time-course expression of miRNAs revealed stem and leaf rust-responsive miRNAs and their possible role in balancing disease resistance/susceptibility. Disclosure of guide strand, passenger strand and a variant of novel-Tae-miR02 from different subgenome origins might serve as a potential link between stem and leaf rust defence mechanisms downstream to respective R-genes. The outcome from the analysis of microRNA dynamics among two rust diseases and further characterization of identified microRNAs can contribute to significant novel insights on wheat-rust interactions and rust management. KEY POINTS: • Identification and comparative analysis of stem and leaf rust-responsive miRNAs. • Chromosomal location and functional prediction of miRNAs. • Time-course expression analysis of pathogen-responsive miRNAs.
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Affiliation(s)
- Minu M Nair
- Department of Genomic Science, Central University of Kerala, Kasaragod, 671316, Kerala, India
| | - S Hari Krishna Kumar
- Department of Genomic Science, Central University of Kerala, Kasaragod, 671316, Kerala, India
| | - S Jyothsna
- Department of Genomic Science, Central University of Kerala, Kasaragod, 671316, Kerala, India
| | - Krishna T Sundaram
- International Rice Research Institute (IRRI), South Asia Hub, Patancheru, 502324, Telangana, India
| | - C Manjunatha
- ICAR-National Bureau of Agricultural Insect Resources, Bengaluru, 560024, Karnataka, India
| | - M Sivasamy
- ICAR-Indian Agricultural, Research Institute, Regional Station, Wellington, 643231, Tamil Nadu, India
| | - Manickavelu Alagu
- Department of Genomic Science, Central University of Kerala, Kasaragod, 671316, Kerala, India.
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Krishna RH, Chandraprabha MN, Monika P, Br T, Chaudhary V, Manjunatha C. Biomolecule conjugated inorganic nanoparticles for biomedical applications: A review. Biotechnol Genet Eng Rev 2022:1-42. [PMID: 36424727 DOI: 10.1080/02648725.2022.2147678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 10/29/2022] [Indexed: 11/27/2022]
Abstract
Last decade has witnessed impressive progress in the fields of medicine and bioengineering with the aid of nanomaterials. Nanomaterials are favoured for their improved bio-chemical as well as mechanical properties with tremendous applications in biomedical domains such as disease diagnosis, targeted drug delivery, medical imaging, in vitro diagnostics, designing innovatory cross-functional implants and regenerative tissue engineering. The current situation insists upon crafting nanotools that are capable of catering to biological needs and construct more efficient biomedical strategies. In the recent years, surface functionalization and capping with biomolecules has initiated substantial interest towards research. In this regard, search of suitable biofunctionalized nanoparticles seem to be like finding pearls from ocean. Conjugating biological molecules with inorganic materials has paved the way for unravelling innovative functional materials with dramatically improved properties and a wide range of uses. Inorganic nanoparticles such as metals, metal oxides, as well as quantum dots have been hybridised or conjugated with biomolecules such as proteins, peptides, carbohydrates, and nucleic acids. The present review reports on various biomolecule functionalized inorganic nanomaterials highlighting the biomolecule-inorganic nanoparticle interaction studies, the mechanism of functionalization, antimicrobial efficacy of the functionalised nanoconjugates and its use in various biomedical applications.
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Affiliation(s)
- R Hari Krishna
- Department of Chemistry, M.S. Ramaiah Institute of Technology, Bangalore, India
- Center for Bio and Energy Materials Innovation, M.S. Ramaiah Institute of Technology, Bangalore, India
| | - M N Chandraprabha
- Center for Bio and Energy Materials Innovation, M.S. Ramaiah Institute of Technology, Bangalore, India
- Department of Biotechnology, M.S. Ramaiah Institute of Technology, Bangalore, India
| | - Prakash Monika
- Department of Biotechnology, M.S. Ramaiah Institute of Technology, Bangalore, India
| | - Tanuja Br
- Department of Biotechnology, M.S. Ramaiah Institute of Technology, Bangalore, India
| | - Vishal Chaudhary
- Research Cell and Department of Physics, Bhagini Nivedita College, University of Delhi, New Delhi, India
| | - C Manjunatha
- Center for Nanomaterials and devices, Department of Chemistry, RV College of Engineering, Bangalore, India
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Hari Krishna R, Chandraprabha MN, Mamatha GM, Mallappa M, Kundagol D, Manjunatha C. Non-enzymatic Catalytic Oxidation of Glucose and Dual Mode Sensing by Fluorescence/Electrochemical Methods Using MO–GO Composites (MO = ZnO, CuO, NiO and Co3O4). Top Catal 2022. [DOI: 10.1007/s11244-022-01588-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Selvaraj M, Assiri MA, Rokhum SL, Manjunatha C, Appaturi JN, Murugesan S, Bhaumik A, Subrahmanyam C. Solvent-free benzylic oxidation of aromatics over Cu(II)-containing propylsalicylaldimine anchored on the surface of mesoporous silica catalysts. Dalton Trans 2021; 50:15118-15128. [PMID: 34612261 DOI: 10.1039/d1dt01760h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A sustainable method was used to produce aromatic ketones by the solvent-free benzylic oxidation of aromatics over mesoporous Cu(II)-containing propylsalicylaldimine anchored on the surface of Santa Barbara Amorphous type material-15 (CPSA-SBA-15) catalysts. For comparison, mesoporous Cu(II)-containing propylsalicylaldimine anchored with Mobil Composition of Matter-41 (CPSA-MCM-41) was assessed for these reactions under similar reaction conditions. The washed CPSA-SBA-15(0.2) (W-CPSA-SBA-15(0.2)) catalyst was prepared using an easy chemical method for the complete removal of non-framework CuO nanoparticle species on the surface of pristine CPSA-SBA-15(0.2) (p-CPSA-SBA-15(0.2) prepared with 0.2 wt% of Cu, and its catalytic activity was evaluated with different reaction parameters, oxidants and solvents. In order to confirm the catalytic stability, the recyclability was assessed, and the performance of hot-filtration experiments was also evaluated. All the catalysts used for these catalytic reactions were characterized using many instrumental techniques to pinpoint the mesoporous nature and active sites of the catalysts. The proposed reaction mechanism has been well documented on the basis of catalytic results obtained for solvent-free oxidation of aromatics. Based on the catalytic results, we found that W-CPSA-SBA-15(0.2) is a very ecofriendly catalyst with exceptional catalytic activity.
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Affiliation(s)
- Manickam Selvaraj
- Department of Chemistry, Faculty of Science, King Khalid University, Abha 61413, Saudi Arabia.
| | - Mohammed A Assiri
- Department of Chemistry, Faculty of Science, King Khalid University, Abha 61413, Saudi Arabia.
| | | | - C Manjunatha
- Department of Chemistry, RV College of Engineering, Bengaluru, 560059, India.,Centre for Hydrogen and Green Technology Research, RV College of Engineering, Bengaluru, 560059, India
| | | | - Sepperumal Murugesan
- Department of Inorganic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, 625 021, Tamil Nadu, India
| | - Asim Bhaumik
- Indian Association for the Cultivation of Science, Jadavpur, Kolkata - 700 032, India
| | - Ch Subrahmanyam
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, India
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Shivakumara J, Manjunatha C, Hari Krishna R, Ashoka S, Chikkahanumantharayappa, Selvaraj M, Sillanpää M. Enhancement of photoluminescence of Cd0.95Eu0.05SiO3 phosphor using Na+ and K+ as charge compensators. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111319] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ansari SA, Manjunatha C, Parveen N, Shivaraj BW, Hari Krishna R. Mechanistic insights into defect chemistry and tailored photoluminescence and photocatalytic properties of aliovalent cation substituted Zn 0.94M 0.06-xLi xO (M: Fe 3+, Al 3+, Cr 3+) nanoparticles. Dalton Trans 2021; 50:14891-14907. [PMID: 34607338 DOI: 10.1039/d1dt01706c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we demonstrate the microwave assisted solution combustion synthesis of aliovalent cation substituted Zn0.94M0.06-xLixO (M: Fe3+, Al3+, Cr3+) nanoparticles. The structural features, photoluminescence and photocatalytic properties were characterized by X-ray powder diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and UV-visible and photoluminescence (PL) techniques. We have introduced aliovalent cations such as reducible Fe3+, stable Al3+ and oxidisable Cr3+ ions into ZnO and investigated its structural and optical properties. The charge balance and defect stoichiometric composition of ZnO were also studied by co-doping with Li+ ions. By understanding the photoluminescence and photocatalytic activity of doped and co-doped ZnO nanoparticles, the defect chemistry of ZnO is explained in detail. The photocatalytic efficiency of various doped and co-doped ZnO catalysts was compared with respect to the degradation of rhodamine B dye. Among them, the CZO, AZO and L3AZO catalysts showed enhanced photo-degradation efficiencies of 98.1%, 97.6% and 96.6%, respectively, which are high as compared to that of ZnO (89%). This work presents a novel and straightforward, low-cost, tunable and scalable fabrication protocol for highly efficient ZnO-based photocatalysts for practical applications.
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Affiliation(s)
- Sajid Ali Ansari
- Department of Physics, College of Science, King Faisal University, P.O. Box 400, Hofuf, Al-Ahsa 31982, Saudi Arabia.
| | - C Manjunatha
- Department of Chemistry, RV College of Engineering, Bengaluru, 560059, India. .,Centre for Hydrogen and Green Technology Research (CH2GTR), RV College of Engineering, Bengaluru, 560059, India
| | - Nazish Parveen
- Department of Chemistry, College of Science, King Faisal University, P.O. Box 380, Hofuf, Al-Ahsa 31982, Saudi Arabia
| | - B W Shivaraj
- Department of Mechanical Engineering, RV College of Engineering, Bengaluru, 560059, India
| | - R Hari Krishna
- Department of Chemistry, MS Ramaiah Institute of Technology, Bengaluru, 560054, India.
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Sharanabasav H, Pramesh D, Prasannakumar MK, Chidanandappa E, Yadav MK, Ngangkham U, Parivallal B, Raghavendra BT, Manjunatha C, Sharma SK, Karthik N. Morpho-molecular and mating-type locus diversity of Ustilaginoidea virens: an incitant of false smut of rice from Southern parts of India. J Appl Microbiol 2021; 131:2372-2386. [PMID: 33772985 DOI: 10.1111/jam.15087] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 02/17/2021] [Accepted: 03/21/2021] [Indexed: 11/30/2022]
Abstract
AIMS To characterize the geo-distinct isolates of Ustilaginoidea virens for morpho-molecular and mating-type locus diversity. METHODS AND RESULTS Sixty-one isolates of U. virens collected from Southern India exhibited significant diversity in mycelial width (3·45-5·50 µm), colony colour (yellow, pale yellow, and white), and growth pattern (thick leather mat, raised-fluffy, flat-fluffy, and raised). Field-borne chlamydospores of each isolate were significantly smaller in size (3·34-5·26 µm2 ) compared to those formed on culture media (18·6-100·89 µm2 ). The phylogenetic study based on internal transcribed sequences revealed two clusters; however, most isolates (n = 54) were grouped in cluster-I, indicating common ancestral origin. We also identified 42 haplotypes; among them, Hap_3 has the highest number of isolates (n = 19). Mating-type locus (MAT1) analysis revealed all sixty-one isolates as heterothallic, wherein 37 and 24 isolates belonging to MAT1-1-1 and MAT1-2-1 heterothallic mating types, respectively. The microsynteny analysis of MAT1 loci of one of the Indian strain (Uv-Gvt) along with Uv-8b (China) strain revealed synteny conservation at MAT1 locus, which is flanked by conserved genes SLA2 and a hypothetical protein in the upstream and APN2, COX12 and APC5 in the downstream of the locus. CONCLUSIONS Morpho-molecular study revealed the significant diversity among geo-distinct isolates, and MAT1 loci analysis indicated the distribution of heterothallic mating types in south Indian paddy fields. And also, complete synteny conservation between Indian and Chinese strain was observed at the MAT1 locus. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first report describing the sexuality of Indian strains of the U. virens, which would help better understand the genetic diversity of the U. virens prevailing in Southern India and aid in developing resistant rice cultivars against this pathogen population.
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Affiliation(s)
- H Sharanabasav
- Rice Pathology Laboratory, All India Coordinated Rice Improvement Programme, University of Agricultural Sciences, Raichur, India
| | - D Pramesh
- Rice Pathology Laboratory, All India Coordinated Rice Improvement Programme, University of Agricultural Sciences, Raichur, India
| | - M K Prasannakumar
- Department of Plant Pathology, University of Agricultural Sciences, Bangalore, India
| | - E Chidanandappa
- Rice Pathology Laboratory, All India Coordinated Rice Improvement Programme, University of Agricultural Sciences, Raichur, India
| | - M K Yadav
- ICAR-National Rice Research Institute, Cuttack, India
| | - U Ngangkham
- ICAR-Research Complex for NEH Region Umia, Meghalaya, India
| | - B Parivallal
- Department of Plant Pathology, University of Agricultural Sciences, Bangalore, India
| | - B T Raghavendra
- Department of Plant Pathology, University of Agricultural Sciences, Raichur, India
| | - C Manjunatha
- ICAR-Indian Agricultural Research Institute, Regional Station, Wellington, India
| | - S K Sharma
- ICAR-Research Complex for NEH Region, Imphal Center, Manipur, India
| | - N Karthik
- University of Madras, Chennai, India
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Manjunatha C, Preran Rao P, Bhardwaj P, Raju H, Ranganath D. New insight into the synthesis, morphological architectures and biomedical applications of elemental selenium nanostructures. Biomed Mater 2021; 16:022010. [PMID: 33629664 DOI: 10.1088/1748-605x/abc026] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Selenium nanoparticles have been shown to be versatile in their applications by being used in catalysis, solar cells, electronic devices and especially in medical applications such as antiviral, anticancer, antitumor and antibacterial agents in different concentrations. They have also shown enhanced drug and gene delivery by conjugating with drug molecules and showing high synergistic effects. After realising their usefulness in the biomedical field, we have made a sincere effort to correlate and consolidate the recent developments made in their synthesis methods, structural features and biological applications. This review paper highlights the three preparation methods, being the chemical, physical and biological approaches. The variation in the different techniques employed for synthesis and the different parameters and process conditions dictating the size and morphology are discussed. The importance and influence of various reducing agents used in the chemical method, pulsed laser ablation technique in the physical method and green plant extract microorganism in the biological approach have been explored. The detailed structural features of trigonal crystalline structures, with different nanoscaled morphologies such as nano spheres, rods, wires, tubes and belts have also been explored. An overview of selenium nanoparticle activity in various biomedical applications such as anticancer, antioxidant, antiviral, antibacterial, antifungal, antiparasitic, and antidiabetics is discussed.
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Affiliation(s)
- C Manjunatha
- Department of Chemistry, RV College of Engineering, Bengaluru 560059, India. Visvesvaraya Technological University, Belagavi 590018, India
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Jeevan B, Gogoi R, Sharma D, Manjunatha C, Rajashekara H, Ram D, Mishra KK, Mallikarjuna MG. Genetic analysis of maydis leaf blight resistance in subtropical maize (Zea mays L.) germplasm. J Genet 2020. [DOI: 10.1007/s12041-020-01245-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Vidya C, Manjunatha C, Sudeep M, Ashoka S, Lourdu Antony Raj MA. Photo-assisted mineralisation of titan yellow dye using ZnO nanorods synthesised via environmental benign route. SN Appl Sci 2020. [DOI: 10.1007/s42452-020-2537-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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Jeevan B, Gogoi R, Sharma D, Manjunatha C, Rajashekara H, Ram D, Mishra KK, Mallikarjuna MG. Genetic analysis of maydis leaf blight resistance in subtropical maize ( Zea mays L.) germplasm. J Genet 2020; 99:89. [PMID: 33361641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Knowledge on the genetics of maydis leaf blight (MLB) is crucial to breed the resistant maize cultivars to combat disease epidemics as a sustainable and cost-effective approach. The present investigation was framed to understand the genetics of MLB resistance in subtropical maize. Two contrasting genotypes CM119 (susceptible) and SC-7-2-1-2-6-1 (resistant) were used to generate six genetic populations, namely P1, P2, F1, F2, BC1P1 and BC1P2, and evaluated in three target environments for MLB resistance under artificial epiphytotic condition. The CM119 and SC-7-2-1-2-6-1 showed susceptible and resistant reactions with mean disease reaction of 3.89-3.98 and 1.88-2.00, respectively. The derived generations, namely F1, F2, BC1P1 and BC1P2 showed mean disease reaction of 2.15-2.28, 2.44-2.51, 2.19-2.24 and 2.22-2.28, respectively in the test locations. The segregating generations (F2: 0.35-0.37; BC1P1: 0.24-0.29 and BC1P2: 0.17-0.20) showed variation for MLB disease resistance over the parental and first filial generations (P1: 0.11-0.17; P2: 0.08-0.13 and F1: 0.12-0.14). The genetic analysis of MLB resistance revealed the nonallelic interactions of duplicate epistasis type across the test locations. Among the gene interactions, dominance x dominance [l] effect was predominant over additive x additive [i] and additive x dominance [j] effects. The segregation analysis and the prediction of the number of major loci revealed at least two major genes associated with MLB tolerance in subtropical maize. Our investigation paved the foundation for the improvement of subtropical maize germplasm of MLB resistance.
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Affiliation(s)
- B Jeevan
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India.
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Manjunatha C, Sharma S, Kulshreshtha D, Gupta S, Singh K, Bhardwaj SC, Aggarwal R. Rapid detection of Puccinia triticina causing leaf rust of wheat by PCR and loop mediated isothermal amplification. PLoS One 2018; 13:e0196409. [PMID: 29698484 PMCID: PMC5919678 DOI: 10.1371/journal.pone.0196409] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 04/12/2018] [Indexed: 10/26/2022] Open
Abstract
Leaf rust of wheat caused by Puccinia triticina has significant impact on wheat production worldwide. Effective and quick detection methodologies are required to mitigate yield loss and time constraints associated with monitoring and management of leaf rust of wheat. In the present study, detection of P. triticina has been simplified by developing a rapid, reliable, efficient and visual colorimetric method i.e., loop mediated isothermal amplification of DNA (LAMP). Based on in silico analysis of P. triticina genome, PTS68, a simple sequence repeat was found highly specific to leaf rust fungus. A marker (PtRA68) was developed and its specificity was validated through PCR technique which gave a unique and sharp band of 919 bp in P. triticina pathotypes only. A novel gene amplification method LAMP which enables visual detection of pathogen by naked eye was developed for leaf rust pathogen. A set of six primers was designed from specific region of P. triticina and conditions were optimised to complete the observation process in 60 minutes at 65o C. The assay developed in the study could detect presence of P. triticina on wheat at 24 hpi (pre-symptomatic stage) which was much earlier than PCR without requiring thermal cycler. Sensitivity of LAMP assay developed in the study was 100 fg which was more sensitive than conventional PCR (50 pg) and equivalent to qPCR (100 fg). The protocol developed in the study was utilized for detection of leaf rust infected samples collected from different wheat fields. LAMP based colorimetric detection assay showed sky blue color in positive reaction and violet color in negative reaction after addition of 120 μM hydroxyl napthol blue (HNB) solution to reaction mixture. Similarly, 0.6 mg Ethidium bromide/ml was added to LAMP products, placed on transilluminator to witness full brightness in positive reaction and no such brightness could be seen in negative reaction mixture. Further, LAMP products spread in a ladder like banding pattern in gel electrophoresis. Our assay is significantly faster than the conventional methods used in the identification of P. triticina. The assay developed in the study shall be very much useful in the development of diagnostic kit for monitoring disease, creation of prediction model and efficient management of disease.
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Affiliation(s)
- C. Manjunatha
- Fungal Molecular Biology Laboratory, Division of Plant Pathology, ICAR—Indian Agricultural Research Institute, New Delhi, India
| | - Sapna Sharma
- Fungal Molecular Biology Laboratory, Division of Plant Pathology, ICAR—Indian Agricultural Research Institute, New Delhi, India
| | - Deepika Kulshreshtha
- Fungal Molecular Biology Laboratory, Division of Plant Pathology, ICAR—Indian Agricultural Research Institute, New Delhi, India
| | - Sangeeta Gupta
- Fungal Molecular Biology Laboratory, Division of Plant Pathology, ICAR—Indian Agricultural Research Institute, New Delhi, India
| | - Kartar Singh
- ICAR-National Bureau of Plant Genetic Resources, New Delhi, India
| | - Subhash C. Bhardwaj
- ICAR—Indian Institute of Wheat and Barley Research, Regional Station, Flowerdale, Shimla, India
| | - Rashmi Aggarwal
- Fungal Molecular Biology Laboratory, Division of Plant Pathology, ICAR—Indian Agricultural Research Institute, New Delhi, India
- * E-mail:
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Sunitha DV, Manjunatha C, Shilpa CJ, Nagabhushana H, Sharma SC, Nagabhushana BM, Dhananjaya N, Shivakumara C, Chakradhar RPS. CdSiO₃:Pr³⁺ nanophosphor: synthesis, characterization and thermoluminescence studies. Spectrochim Acta A Mol Biomol Spectrosc 2012; 99:279-287. [PMID: 23085285 DOI: 10.1016/j.saa.2012.08.057] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 05/24/2012] [Accepted: 08/21/2012] [Indexed: 06/01/2023]
Abstract
A series of Pr(3+) (1-9 mol%) doped CdSiO(3) nanophosphors have been prepared for the first time by a low temperature solution combustion method using oxalyldihydrizide (ODH) as a fuel. The final product was characterized by Powder X-ray diffraction (PXRD), Fourier Transform Infrared Spectroscopy (FTIR), scanning electron microscopy (SEM), and UV-Vis spectroscopy. The average crystallite size was calculated using Debye-Scherrer's formula and Williamson-Hall (W-H) plots and found to be in the range 31-37 nm. The optical energy band gap (E(g)) of undoped for Pr(3+) doped samples were estimated from Tauc relation which varies from 5.15-5.36 eV. Thermoluminescence (TL) properties of Pr(3+) doped CdSiO(3) nanophosphor has been investigated using γ-irradiation in the dose range 1-6 kGy at a heating rate of 5 °C s(-1). The phosphor shows a well resolved glow peak at ∼171 °C along with shouldered peak at 223 °C in the higher temperature side. It is observed that TL intensity increase with increase of Pr(3+) concentration. Further, the TL intensity at 171 °C is found to be increase linearly with increase in γ-dose which is highly useful in radiation dosimetry. The kinetic parameters such as activation energy (E), frequency factor (s) and order of kinetics was estimated by Luschiks method and the results are discussed.
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Affiliation(s)
- D V Sunitha
- Professor C.N.R. Rao Centre for Advanced Materials Research, Tumkur University, Tumkur 572 103, India
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Manjunatha C, Sunitha DV, Nagabhushana H, Nagabhushana BM, Sharma SC, Chakradhar RPS. Combustion synthesis, structural characterization, thermo and photoluminescence studies of CdSiO₃:Dy³⁺ nanophosphor. Spectrochim Acta A Mol Biomol Spectrosc 2012; 93:140-148. [PMID: 22481172 DOI: 10.1016/j.saa.2012.02.094] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2011] [Revised: 02/17/2012] [Accepted: 02/23/2012] [Indexed: 05/31/2023]
Abstract
CdSiO(3):Dy(3+) (1-9mol%) nanophosphors were prepared for the first time using the solution combustion method. The process of monoclinic phase formation was investigated by PXRD, TG-DTA and FTIR. The results show that the phase formation temperature of combustion-derived monoclinic CdSiO(3) is found to be lower as compared to the powders prepared by solid-state and sol-gel methods. It was observed that the average crystallite size calculated by Debye-Scherrer's formula and Williamson-Hall (W-H) plot are well comparable and was found to be in the range of 35-70 nm. Scanning electron micrographs indicate that there exist circular microcrystalline particles. It is observed that the optical energy gap is widened with the increase of Dy(3+) ion dopant. The photoluminescence (PL) spectra exhibit characteristic transitions of Dy(3+) due to (4)F(9/2)→(6)H(15/2) (blue) and (4)F(9/2)→(6)H(13/2) (yellow) regions. The thermoluminescence (TL) glow curve of CdSiO(3):Dy(3+) nano powder exposed to UV irradiation exhibited one main peak centered at 170°C. The intensity of the main peak increases up to the dose of 20 min then it decreases. The glow curves were analyzed by the glow peak shape method and the estimated trap parameters are discussed.
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Affiliation(s)
- C Manjunatha
- Department of Chemistry, M. S. Ramaiah Institute of Technology, Bangalore 560054, India
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Manjunatha C, Nagabhushana BM, Nagabhushana H, Chakradhar RPS. Transformation of hydrothermally derived nanowire cluster intermediates into CdSiO3 nanobelts. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm34356h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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