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1

Two new species of the genus Cletus STAL from India (Hemiptera: Heteroptera: Coreidae)

100%
Gupta R., Singh D.
Polish Journal of Entomology
|
2013
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tom 82
|
nr 2
2

Evaluation of malathion-induced cytogenetical effects and oxidative stress in plants using Allium test

100%
Singh D., Roy B. K.
Acta Physiologiae Plantarum
|
2017
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tom 39
|
nr 04
3

Embryology and development of fruit in Cichorieae. Lactuca Linn.

100%
Kaul V., Singh D.
Acta Biologica Cracoviensia. Series Botanica
|
1982
|
tom 24
4

In vitro drought tolerance in selected elite clones of Eucalyptus tereticornis Sm.

81%
Singh D., Kaur S., Kumar A.
Acta Physiologiae Plantarum
|
2020
|
tom 42
|
nr 02
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Characterization and biosynthesis of silver nanoparticles using a fungus Aspergillus niger

81%
Ninganagouda S., Rathod V., Singh D.
International Letters of Natural Sciences
|
2014
|
tom 10
An attractive possibility of green nanotechnology is to use microorganisms in the synthesis of silver nanoparticles. Recently, the biosynthesis especially from fungi has emerged as a novel method for the synthesis of silver nanoparticles. Nanoparticles are considered as building blocks of Nanotechnology. In the present work we have screened fungi for the extracellular production of silver nanoparticles. Aspergillus sps, Rhizopus sps, Fusarium sp. and Penicillium sp. were the isolates screened and subjected to silver nanoparticles production. Of the tested isolates, the fungus Aspergillus sp. showed maximum absorbance at 416 nm which is an indication of Silver nanoparticles production. Further characterization was made by TEM which revealed the shape to be spherical and size ranged between 20-55 nm, EDS showed the presence of elemental silver at 3kev, FTIR spectrum showed the different functional groups, XRD spectrum showed the crystalline nature of the particles and AFM revealed three dimensional structures of the nanoparticles. Of all kinds of nanoparticles silver nanoparticles show great promise in terms of biomedical applications as they exhibit different biomedical activities.
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Determining the performance measurement of SME from economic value added: study on Hungary, Somogy County

81%
Singh D., Gal Z., Huseynov R., Wojtaszek M.
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego
|
2018
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tom 18[33]
|
nr 2
7

Genetic and molecular analyses of resistance to a variant of Puccinia striiformis in barley

81%
Golegaonkar P. G., Wellings C. R., Singh D., Park R. F.
Journal of Applied Genetics
|
2013
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tom 54
|
nr 1
Seedlings of 62 Australian barley cultivars and two exotic barley genotypes were assessed for resistance to a variant of Puccinia striiformis, referred to as “Barley Grass Stripe Rust” (BGYR), first detected in Australia in 1998, which is capable of infecting wild Hordeum species and some genotypes of cultivated barley. Fifty-three out of 62 cultivated barley cultivars tested were resistant to the pathogen. Genetic analyses of seedling resistance to BGYR in six Australian barley cultivars and one Algerian barley landrace indicated that they carried either one or two major resistance genes to the pathogen. A single recessive seedling resistance gene, rpsSa3771, identified in Sahara 3771, was located on the long arm of chromosome 1 (7 H), flanked by the restriction fragment length polymorphism (RFLP) markers Xwg420 and Xcdo347 at genetic distances of 12.8 and 21.9 cM, respectively. Mapping resistance to BGYR at adult plant growth stages using the doubled haploid (DH) population Clipper × Sahara 3771 identified two major quantitative trait loci (QTL), one on the long arm of chromosome 3 (3 H) and the second on the long arm of chromosome 1 (7 H), accounting for 26 % and 18 % of the total phenotypic variation, respectively. The QTL located on chromosome 7HL corresponded to seedling resistance gene rpsSa3771 and the second QTL was concluded to correspond to a single APR gene, designated rpsCl, contributed by cultivar Clipper.
8

Physiological and biochemical characteristics of Vigna species for Al stress tolerance

71%
Singh D., Pal M., Singh R., Singh C. K., Chaturvedi A. K.
Acta Physiologiae Plantarum
|
2015
|
tom 37
|
nr 04
The objective of the present investigation was to evaluate Al tolerance in three Vigna species viz. V. radiata (‘Pusa-672’), V. mungo (‘Mash-114’) and V. umbellata (‘RBL-6’) under Al stress conditions. All three Vigna species were assessed in hydroponic assay in various concentration of Al (0, 74 and 185 lM) for 48 h. Variations in the Al tolerance were analysed based on various traits such as root elongation rate, re-growth after hematoxylin staining, accumulation of aluminium and callose and their localization, H2O2, lipid peroxidation and antioxidant enzymes activity. Aluminium stress caused inhibition in root elongation rate and root re-growth and increased accumulation of aluminium, callose, H2O2 and lipid peroxidation in all three Vigna species. However, accumulation of aluminium, callose, H2O2 and lipid peroxidation was more in V. radiata (‘Pusa-672’) than in V. mungo (‘Mash-114’) and V. umbellata (‘RBL-6’). Higher activity of superoxide dismutase (SOD; EC 1.15.1.1), guaiacol peroxidase (GPX; EC 1.11.1.7) and ascorbate peroxidase (APX; EC 1.11.1.11) was observed in V. umbellata than in V. mungo and V. radiata. Transverse sections of roots were examined to confirm the localization of Al in the apoplastic or symplastic regions using fluorescent microscopy. In V. umbellata (‘RBL-6’) and V. mungo (‘Mash-114’), most of the Al was localised in the epidermal and cortical tissues indicating restricted movement of Al to the upper layers. In V. radiata, (‘Pusa-672’) more Al was localised in epidermal, cortical, and even endodermal tissues, suggesting its inability to restrict the Al in upper layers. Our findings suggest that V. umbellata as a potential genetic resource for Al tolerance and this trait can be introgressed through breeding programme to developAl-tolerant genotypes in V. mungo and V. radiata.
9

Mapping of seedling resistance in barley to Puccinia striiformis f. sp. pseudohordei

71%
Kamino L. N., Singh D., Pallotta M. A., Collins N. C., Park R. F.
Journal of Applied Genetics
|
2016
|
tom 57
|
nr 1
10
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Studies on biosynthesis of silver nanoparticles using Rhizopus sp. and its antibacterial efficacy on E. coli MDR strains

71%
Hiremath J., Rathod V., Ninganagouda S., Singh D., Prema K.
International Letters of Natural Sciences
|
2014
|
tom 18
Nanotechnology is a field that is burgeoning day by day, making an impact in all spheres of human life. Biological methods of synthesis have paved way for the “greener synthesis” of nanoparticles and these have proven to be better methods due to slower kinetics, they offer better manipulation and control over crystal growth and their stabilization. In this context we have investigated extracellular biosynthesis of silver nanoparticles (AgNPs) using cell-free extract of Rhizopus spp.. Formation of AgNPs was indicated by the change in the colour of the cellfree extract from yellow to dark brown under static condition after 48 hrs of incubation. Characterization of AgNPs was carried out by UV-Vis Spectroscopy which gave sharp plasmon resonance peak at 429 nm corresponding to spherical shaped nanoparticles. Transmission electron microscopy (TEM) micrograph showed formation of well-dispersed AgNPs in the range of 25-50 nm. Scanning electron microscopy (SEM) showed the particles to be uniformly dispersed without agglomeration with smooth morphology. EDS showed the presence of elemental silver at 3kev. X-ray diffraction (XRD)-spectrum of the AgNPs exhibited 2θ¸ values corresponding to nanocrystal. These biosynthesized AgNPs were used to study their antimicrobial activity against Multi-drug resistant (MDR) E. coli strains, by Agar diffusion method. Zone of inhibition was measured. Synthesis of nanosized particles with antibacterial properties, which are called "nanoantibiotics", is of great interest in the development of new pharmaceutical products.
11

Performance of low and high Fe accumulator wheat genotypes grown on soils with low or high available Fe and endophyte inoculation

71%
Singh D., Geat N., Rajawat M. V. S., Prasanna R., Saxena A. K.
Acta Physiologiae Plantarum
|
2020
|
tom 42
|
nr 02
12
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

A study on extracellular synthesis of silver nanoparticles from endophytic fungi, isolated from ethanomedicinal plants Curcuma longa and Catharanthus roseus

61%
Singh D., Rathod V., Singh A. K., Haq M. U., Mathew J., Kulkarni P.
International Letters of Natural Sciences
|
2016
|
tom 57
Biological method is considered as eco-friendly and reliable process for the synthesis of silver nanoparticles (AgNps) in the field of nanotechnology due to its tremendous applications in various fields. In this study we have isolated a total of twelve endophytic fungi from leaves of Curcuma longa (turmeric) and Catharanthus roseus out of which six endophytic fungi showed their ability to synthesized AgNps from silver nitrate (AgNO3) solution which splits into a positive silver ion (Ag+) and a negative nitrate ion (NO3 -) in order to turn the silver ions into solid silver (Agº). Of the six positive endophytic fungi VRD2 showed good and encouraging results and was identified as Penicillium spinulosum VRD2. UV-Visible Spectroscopy confirms the AgNps showing maximum peak at 425nm implying the bioreduction of AgNO3. Transmission Electron Microscopy (TEM) revealed the particle are spherical and well dispersed without agglomeration size ranging from 25- 30nm.
13

Uptake, distribution, and remobilization of iron and zinc among various tissues of wheat–Aegilops substitution lines at different growth stages

51%
Sharma P., Sheikh I., Singh D., Kumar S., Kumar Verma S., Kumar R., Vyas P., Singh Dhaliwal H.
Acta Physiologiae Plantarum
|
2017
|
tom 39
|
nr 08
14

Genetics - and genomics - based interventions for nutritional enhancement of grain legume crops: status and outlook

51%
Bohra A., Sahrawat K. L., Kumar S., Joshi R., Parihar A. K., Singh U., Singh D., Singh N. P.
Journal of Applied Genetics
|
2015
|
tom 56
|
nr 2
15

Comparative analysis for understanding salinity tolerance mechanism in Indian Mustard (Brassica juncea L.)

51%
Singh B. K., Singh S. P., Shekhawat K., Rathore S. S., Pandey A., Kumar S., Singh D. K., Choudhry S. B., Kumar S., Singh D.
Acta Physiologiae Plantarum
|
2019
|
tom 41
|
nr 06
This study reports a comparison of differential physiological and biochemical changes in two Indian Mustard (Brassica juncea L.) cultivars viz. CS-52 (salinity tolerant) and Ashirwad (salinity susceptible) after 15 days of gradual increase in NaCl concentration in the nutrient solution. The increase in the NaCl concentration in the nutrient solution was as follows: 25 mM for 2 days, 50 mM for 2 days, 75 mM for 2 days, 100 mM for 2 days, 125 mM for 2 days, and 150 mM for 5 days. After 15 days of salinity stress, we observed a sharp decline in dry matter content and leaf area in Ashirwad. These effects were, however, less pronounced in CS-52. Under high salinity conditions, CS-52 maintained a better physiological status as determined by higher relative water content, higher water use efficiency, and lower leaf temperature and electrolytic leakage ratio, compared to Ashirwad. CS-52 was also observed to be more efficient regarding gas-exchange parameters (stomatal conductance and transpiration) and photosynthetic capacity. Moreover, salt-induced changes in accumulation and distribution patterns, and the ratios of major macro- and microelements were recorded to be more favorable in CS-52 compared to Ashirwad. The study also revealed that salinity-induced relative changes in the concentrations and compositions of biomolecules such as lipids, proteins, and carbohydrates, and structural rearrangements in the side chains of proteins were less prominent in CS-52 indicating better preparedness and thus more adaptability of CS-52 towards salinity.
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