Body coloration, carotenoid content, spermatophore quality and biochemical parameters by effect of temperature in the caridean shrimp Neocaridina davidi (Atyidae)

2020 ◽  
Author(s):  
Ana Laura Tomas ◽  
Daniela Eliana Sganga ◽  
Ariadna Battista ◽  
Laura Susana López Greco
Keyword(s):  
Biochemical Parameters ◽  
Effect Of Temperature ◽  
Carotenoid Content ◽  
Caridean Shrimp ◽  
Body Coloration

Effect of diets on carotenoid content, body coloration, biochemical composition and spermatophore quality in the “red cherry” shrimp Neocaridina davidi (Caridea, Atyidae)

2020 ◽  
Vol 26 (4) ◽  
pp. 1198-1210
Author(s):  
Ana Laura Tomas ◽  
Daniela Eliana Sganga ◽  
Agustina Marciano ◽  
Laura Susana López Greco
Keyword(s):  
Biochemical Composition ◽  
Carotenoid Content ◽  
Body Coloration

scholarly journals Improving the Selection of Vegetation Index Characteristic Wavelengths by Using the PROSPECT Model for Leaf Water Content Estimation

2021 ◽  
Vol 13 (4) ◽  
pp. 821
Author(s):  
Jian Yang ◽  
Yangyang Zhang ◽  
Lin Du ◽  
Xiuguo Liu ◽  
Shuo Shi ◽  
...  
Keyword(s):  
Water Content ◽  
Biochemical Parameters ◽  
Leaf Water ◽  
Leaf Structure ◽  
Carotenoid Content ◽  
Leaf Water Content ◽  
Dry Matter Content ◽  
Structure Parameter ◽  
Equivalent Water Thickness ◽  
Selection Of

Equivalent water thickness (EWT) is a major indicator for indirect monitoring of leaf water content in remote sensing. Many vegetation indices (VIs) have been proposed to estimate EWT based on passive or active reflectance spectra. However, the selection of the characteristics wavelengths of VIs is mainly based on statistical analysis for specific vegetation species. In this study, a characteristic wavelength selection algorithm based on the PROSPECT-5 model was proposed to obtain characteristic wavelengths of leaf biochemical parameters (leaf structure parameter (N), chlorophyll a + b content (Cab), carotenoid content (Car), EWT, and dry matter content (LMA)). The effect of combined characteristic wavelengths of EWT and different biochemical parameters on the accuracy of EWT estimation is discussed. Results demonstrate that the characteristic wavelengths of leaf structure parameter N exhibited the greatest influence on EWT estimation. Then, two optimal characteristics wavelengths (1089 and 1398 nm) are selected to build a new ratio VI (nRVI = R1089/R1398) for EWT estimation. Subsequently, the performance of the built nRVI and four optimal published VIs for EWT estimation are discussed by using two simulation datasets and three in situ datasets. Results demonstrated that the built nRVI exhibited better performance (R2 = 0.9284, 0.8938, 0.7766, and RMSE = 0.0013 cm, 0.0022 cm, 0.0030 cm for ANGERS, Leaf Optical Properties Experiment (LOPEX), and JR datasets, respectively.) than that the published VIs for EWT estimation. It is demonstrated that the built nRVI based on the characteristic wavelengths selected using the physical model exhibits desirable universality and stability in EWT estimation.

scholarly journals Heavy metal stress influence the andrographolide content, phytochemicals and antioxidant activity of Andrographis paniculata

2021 ◽  
Vol 8 (2) ◽  
Author(s):  
Anna Antony ◽  
Praveen Nagella
Keyword(s):  
Heavy Metals ◽  
Antioxidant Activity ◽  
Biochemical Parameters ◽  
Negative Impact ◽  
Antioxidant Activities ◽  
Heavy Metal Stress ◽  
Andrographis Paniculata ◽  
Carotenoid Content ◽  
Total Phenolic ◽  
Time Interval

Heavy metals (HM) are toxic components present in the earth’s crust that can have a negative impact on plants as well as animals. Andrographis paniculata or ‘King of bitters’ belonging to the family Acanthaceae, is a medicinal herb traditionally used in the treatment of fever, common cold etc. In the present study, the effect of heavy metals (copper, tin and cobalt) on the andrographolide content, biochemical parameters like chlorophyll, carotenoid, protein, Total phenolic content (TPC), Total flavonoid content (TFC) and antioxidant activity in A. paniculata were analysed. Saplings of A. paniculata were treated at 50 and 100 mM concentrations, three different times at a time interval of 7 days. Andrographolide production was found to increase in copper and cobalt treated saplings when compared with the control. From the results, maximum andrographolide concentration was found in the saplings treated with 50 mM copper (8.51 mg/g of DW) and 50 mM tin (8.10 mg/g of DW) respectively. 50 mM cobalt treated plants have shown the highest concentration of TPC (17.21 mg/g of extract) and TFC (6.97 mg/g of extract). Notable variations in other biochemical parameters like total chlorophyll, carotenoid content and antioxidant activities were observed in all treatments compared with the control.

scholarly journals The Morphological and Biochemical Effects of Feeding Hooker's Pitcher with Formica fusca or Calliphora vicina Larvae

2021 ◽  
Vol 50 (1) ◽  
pp. 63-72
Author(s):  
Jacek Wróbel ◽  
Mariola Wróbel ◽  
Urszula Przybylska ◽  
Arkadiusz Telesiński
Keyword(s):  
Biochemical Parameters ◽  
Physiological Condition ◽  
Carotenoid Content ◽  
Calliphora Vicina ◽  
Flavonoid Content ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Biochemical Effects ◽  
Formica Fusca ◽  
Nutritional Needs

The aim of this study was to determine if feeding Hooker’s pitcher (Nepenthes × hookeriana) with blowfly larvae (Calliphora vicina Rob-Desvoidy) or ants (Formica fusca L.) affected the plant’s biometric and biochemical parameters. The research included measurements of length and width of the laminae and pitchers, and the total contents of the ash, assimilation pigments, polyphenols, and flavonoids. These parameters were measured 30 days after the last feeding. This study demonstrated that feeding the plants with blowfly larvae resulted in increases in the lengths and widths of both the laminae and pitchers. Moreover, the laminae had reduced carotenoid content after feeding with blowfly larvae and ants whereas the pitchers of Hooker’s pitcher had increased chlorophyll and carotenoid content after feeding with blowfly larvae. Feeding Hooker’s pitcher plants with blowfly larvae also resulted in a reduction of the total polyphenol content in the laminae whereas the total flavonoid content increased in both the laminae and pitchers of Hooker’s pitcher. Feeding Nepenthes × hookeriana with insects ensures that their nutritional needs are met and leads to pitchers with good physiological condition.

Effects of Meloidogyne incognita, Pseudomonas syringae pv. pisi and Rhizobium leguminosarum inoculated alone, simultaneously, and sequentially, on the growth and biochemical parameters of pea (Pisum sativum) in three soil types

2021 ◽  
Author(s):  
Deeksha Kashyap ◽  
Zaki Anwar Siddiqui
Keyword(s):  
Fly Ash ◽  
Pisum Sativum ◽  
Plant Growth ◽  
Pseudomonas Syringae ◽  
Meloidogyne Incognita ◽  
Biochemical Parameters ◽  
Rhizobium Leguminosarum ◽  
Soil Types ◽  
Carotenoid Content ◽  
Loam Soil

Abstract Effects of Meloidogyne incognita, Pseudomonas syringae pv. pisi and Rhizobium leguminosarum were studied on growth and biochemical parameters of pea (Pisum sativum L.) in three soil types. Plants grown in 20% fly ash attained higher plant growth, chlorophyll and carotenoid followed by loam soil and 20% sand. Inoculation of R. leguminosarum resulted in increased plant growth, nodulation, chlorophyll and carotenoid over control. Root nodulation and proline contents were high in plants grown in 20% sand and least in 20% fly ash. Inoculation of M. incognita prior to P. syringae pv. pisi resulted in a greater reduction in plant growth, nodulation, chlorophyll and carotenoid content and least where P. syringae pv. pisi was inoculated prior to M. incognita. Inoculation of pathogens increased proline contents. Galling and population of M. incognita was high in 20% sand followed by loam soil and fly ash amended soil. P. syringae pv. pisi and R. leguminosarum had adverse effect on galling and nematode population. The principal component analysis identifies interaction of pathogens and showed segregation of various treatments in the plots.

scholarly journals Effect of Heavy Metals on Physiology and Biochemical Profiling in Cyamopsis tetragonoloba L

2019 ◽  
Vol 10 (08) ◽  
pp. 20191-20202
Author(s):  
Vivek Bharti ◽  
Usha Jain ◽  
Praveen Mohil
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Biochemical Parameters ◽  
Germination Percentage ◽  
Carotenoid Content ◽  
Cyamopsis Tetragonoloba ◽  
Total Carotenoid ◽  
Fresh Weight ◽  
Maximum Reduction ◽  
Total Carotenoid Content

In the present investigation effect of abiotic stress in the form of heavy metals was studied for their effect on biochemical parameters including seedling growth and fresh weight of Cyamopsis tetragonoloba L. For this seeds treated with different concentrations (10, 50, 100, 200, 500 and 1000 ppm) of Cu, Cd, Pb, Ni and Zn along with control.  Maximum reduction in seed germination percentage was observed at 1000 ppm concentration. It decreased up to 40% in Cd, 60% in Pb 83% in Ni and Zn and 93% in Cu, whereas it was found to be 100% in the control. The shoot length at 500 ppm concentration was drastically reduced to led than one third of control in case of cadmium. At 500 ppm concentration of lead it was reduced to less than half of control. It was observed that heavy metal significantly reduced the fresh weight of seedling of Cyamopsis tetragonoloba. The percentage decreased in the fresh wright of seedling due to heavy metal application as compared to control. With increases in concentrations of heavy metals there was a gradual decrease in total chorophyll content in Cyamopsis tetragonoloba  except in respect of Zn and Cu up to 10 and 50 ppm concentration, respectively where it was superior to control. It was observed that Zn and Cu were less inhibitory to the amount of total carotenoid content in comparison to other heavy metals. In the control of carotenoid content was 0.37 mg/g fresh weight which decreased to 0.1 mg/g in Cd 0.20 mg/g in Pb, 0.23 mg/g in Ni 0.26 mg/g in Zn and Cu of fresh weight  at 1000 ppm concentration. All biochemical parameters reduced at 1000ppm increasing from 10 ppm.

scholarly journals Screening of Pearl Millet [Pennisetum glaucum [L.] R. Br.] Germplasm Lines against Drought Tolerance Based on Biochemical Traits

2021 ◽  
pp. 1-12
Author(s):  
M. L. Choudhary ◽  
M. K. Tripathi ◽  
Neha Gupta ◽  
Sushma Tiwari ◽  
Niraj Tripathi ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Pearl Millet ◽  
Biochemical Parameters ◽  
Pennisetum Glaucum ◽  
Soluble Sugars ◽  
Carotenoid Content ◽  
College Of Agriculture ◽  
Biochemical Traits ◽  
Total Soluble Sugars ◽  
Average Value

Aim: The current investigation was commenced to investigate genetic miscellany among pearl millet genotypes based on diverse biochemical parameters interrelated to drought tolerance. Study Design: In investigation, 96 pearl millet germplasm lines were screened against drought using diverse biochemical traits. Place and Duration of the Study: The present study was conducted at College of Agriculture, Gwalior, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, M.P., India during July 2019 to December, 2020. Methodology: Five biochemical parameters viz., chlorophyll content, carotenoid content, total soluble sugars, proline and protein were investigated for explanation of differences among 96 pearl millet germplasm lines in respect to drought tolerance. Results: Data of present investigation revealed the mean leaves chlorophyll at 30DAS was 2.90 mgg-1 with the range of 1.31-4.69 mgg-1, whereas chlorophyll at 60DAS was arrayed between 1.46-3.84 mgg-1with an average of 3.02 mgl-1. Carotenoid at 30DAS was ranging from 4.5-11.44 mgg-1 with an average value of 7.23 mgg-1, while carotenoid at 60DAS was recorded in range of 5.01 to 10.10 mgg-1with an average of 6.66 mgg-1. TSS was ranged between 1.10-2.20 mgg-1, proline 0.10 to 0.17 mg g-1 and protein content 9.2-16.60 mgg-1. Conclusions: According to the biochemical data a total of 16 pearl millet genotypes were found to be grouped distantly among all the genotypes. Possibility existed to be drought tolerance of these genotypes.

Nucleation of Disorder in Fe3Al Alloys

1967 ◽  
Vol 25 ◽  
pp. 312-313
Author(s):  
P. R. Swann ◽  
W. R. Duff ◽  
R. M. Fisher
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Annealing Temperature ◽  
Antiphase Domain ◽  
Effect Of Temperature ◽  
Domain Structures ◽  
Transmission Electron ◽  
Domain Boundaries ◽  
Higher Temperature ◽  
The One

Recently we have investigated the phase equilibria and antiphase domain structures of Fe-Al alloys containing from 18 to 50 at.% Al by transmission electron microscopy and Mössbauer techniques. This study has revealed that none of the published phase diagrams are correct, although the one proposed by Rimlinger agrees most closely with our results to be published separately. In this paper observations by transmission electron microscopy relating to the nucleation of disorder in Fe-24% Al will be described. Figure 1 shows the structure after heating this alloy to 776.6°C and quenching. The white areas are B2 micro-domains corresponding to regions of disorder which form at the annealing temperature and re-order during the quench. By examining specimens heated in a temperature gradient of 2°C/cm it is possible to determine the effect of temperature on the disordering reaction very precisely. It was found that disorder begins at existing antiphase domain boundaries but that at a slightly higher temperature (1°C) it also occurs by homogeneous nucleation within the domains. A small (∼ .01°C) further increase in temperature caused these micro-domains to completely fill the specimen.

The effect of temperature on high-resolution TEM image contrast

1995 ◽  
Vol 53 ◽  
pp. 640-641
Author(s):  
T. Geipel ◽  
W. Mader ◽  
P. Pirouz
Keyword(s):  
Form Factor ◽  
Inelastic Scattering ◽  
Accurate Method ◽  
Waller Factor ◽  
Effect Of Temperature ◽  
Specimen Thickness ◽  
Influence Of Temperature ◽  
Debye Waller Factor ◽  
Influence Of Temperature On ◽  
Atomic Form Factor

Temperature affects both elastic and inelastic scattering of electrons in a crystal. The Debye-Waller factor, B, describes the influence of temperature on the elastic scattering of electrons, whereas the imaginary part of the (complex) atomic form factor, fc = fr + ifi, describes the influence of temperature on the inelastic scattering of electrons (i.e. absorption). In HRTEM simulations, two possible ways to include absorption are: (i) an approximate method in which absorption is described by a phenomenological constant, μ, i.e. fi; - μfr, with the real part of the atomic form factor, fr, obtained from Hartree-Fock calculations, (ii) a more accurate method in which the absorptive components, fi of the atomic form factor are explicitly calculated. In this contribution, the inclusion of both the Debye-Waller factor and absorption on HRTEM images of a (Oll)-oriented GaAs crystal are presented (using the EMS software.Fig. 1 shows the the amplitudes and phases of the dominant 111 beams as a function of the specimen thickness, t, for the cases when μ = 0 (i.e. no absorption, solid line) and μ = 0.1 (with absorption, dashed line).

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