The role of nodulation and damping-off in lucerne establishment on acidic sandy soils on the Darling Downs

1972 ◽  
Vol 12 (57) ◽  
pp. 428 ◽  
Author(s):  
J Mackenzie ◽  
T Glasby ◽  
A Diatloff
Keyword(s):  
Adverse Effects ◽  
Soil Ph ◽  
Sandy Soils ◽  
Acidic Soil ◽  
Minimum Standard ◽  
Damping Off ◽  
Rhizobial Inoculation ◽  
Standard Quality ◽  
Main Factor

Four experiments on two soils with deep acid sand A horizons on the western Darling Downs in 1968 and 1969 investigated poor establishment of lucerne. Rates of rhizobial inoculation, lime pelleting, lime banded with the seed, and incorporation of fungicides in the lime pellet or applied to the soil, were examined. The main factor in poor establishment was seedling losses from damping off caused by Pythium irregular.. Establishment increased when the fungicide Dexon was incorporated in the lime pellet, and Dexon had no adverse effects on nodulation. To obtain full nodulation the use of higher than minimum standard quality inocula and lime pelleting were required. On the more acidic soil (pH 5.0, 0-10 cm) additional lime banded at 250 kg ha-1 was beneficial.

Role of Transcriptional Read-Through in PRE Activity in Drosophila melanogaster

Acta Naturae ◽  
2016 ◽  
Vol 8 (2) ◽  
pp. 79-86 ◽  
Author(s):  
P. V. Elizar’ev ◽  
D. V. Lomaev ◽  
D. A. Chetverina ◽  
P. G. Georgiev ◽  
M. M. Erokhin
Keyword(s):  
Dna Sequences ◽  
Cell Types ◽  
Transcription Terminator ◽  
Response Elements ◽  
Polycomb Response Elements ◽  
The Individual ◽  
Multicellular Organisms ◽  
Different Cell Types ◽  
Main Factor

Maintenance of the individual patterns of gene expression in different cell types is required for the differentiation and development of multicellular organisms. Expression of many genes is controlled by Polycomb (PcG) and Trithorax (TrxG) group proteins that act through association with chromatin. PcG/TrxG are assembled on the DNA sequences termed PREs (Polycomb Response Elements), the activity of which can be modulated and switched from repression to activation. In this study, we analyzed the influence of transcriptional read-through on PRE activity switch mediated by the yeast activator GAL4. We show that a transcription terminator inserted between the promoter and PRE doesnt prevent switching of PRE activity from repression to activation. We demonstrate that, independently of PRE orientation, high levels of transcription fail to dislodge PcG/TrxG proteins from PRE in the absence of a terminator. Thus, transcription is not the main factor required for PRE activity switch.

scholarly journals Standard Quality Banking Services of Islamic Banks

2018 ◽  
Vol 8 (1) ◽  
pp. 301
Author(s):  
Haneen A. Al-Khawaja ◽  
Barjoyai Bardai
Keyword(s):  
Islamic Law ◽  
Theoretical Aspect ◽  
Islamic Banking ◽  
Islamic Banks ◽  
High Confidence ◽  
Banking Services ◽  
Standard Quality ◽  
Definition Of

This research discusses in detail the theoretical aspect of the quality standards of banking services of traditional Islamic banks. The criterion of "Shari'ah Compliance" was added by the researcher to the importance and role of dealing with Islamic banks, the definition of this standard and its importance, how to test it for banks as well as how, without the legitimate commitment of these banks to what is classified as Islamic from the foundation, we focus on the importance of the existence of a legal commitment to any Islamic bank to achieve the quality of Islamic banking services of high quality in accordance with Islamic law and laws to achieve a high confidence in the customers who belong to him and deal with his Conspiracy.

scholarly journals Myco-Suppression Analysis of Soybean (Glycine max) Damping-Off Caused by Pythium aphanidermatum

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 788
Author(s):  
Shaban R. M. Sayed ◽  
Shaimaa A. M. Abdelmohsen ◽  
Hani M. A. Abdelzaher ◽  
Mohammed A. Elnaghy ◽  
Ashraf A. Mostafa ◽  
...  
Keyword(s):  
Glycine Max ◽  
Biocontrol Agent ◽  
Lateral Roots ◽  
Dry Weight ◽  
Pythium Aphanidermatum ◽  
Damping Off ◽  
Pythium Oligandrum ◽  
Rdna Its ◽  
Half Strength

The role of Pythium oligandrum as a biocontrol agent against Pythium aphanidermatum was investigated to avoid the harmful impacts of fungicides. Three isolates of P. oligandrum (MS15, MS19, and MS31) were assessed facing the plant pathogenic P. aphanidermatum the causal agent of Glycine max damping-off. The tested Pythium species were recognized according to their cultural and microscopic characterizations. The identification was confirmed through sequencing of rDNA-ITS regions including the 5.8 S rDNA. The biocontrol agent, P. oligandrum, isolates decreased the mycelial growth of the pathogenic P. aphanidermatum with 71.3%, 67.1%, and 68.7% through mycoparasitism on CMA plates. While the half-strength millipore sterilized filtrates of P. oligandrum isolates degrade the pathogenic mycelial linear growth by 34.1%, 32.5%, and 31.7%, and reduce the mycelial dry weight of the pathogenic P. aphanidermatum by 40.1%, 37.4%, and 36.8%, respectively. Scanning electron microscopy (SEM) of the most effective antagonistic P. oligandrum isolate (MS15) interaction showed coiling, haustorial parts of P. oligandrum to P. aphanidermatum hyphae. Furthermore, P. oligandrum isolates were proven to enhance the germination of Glycine max seedling to 93.3% in damping-off infection using agar pots and promote germination of up to 80% during soil pot assay. On the other hand, P. oligandrum isolates increase the shoot, root lengths, and the number of lateral roots.

scholarly journals Role of Biochar in Improving Sandy Soil Water Retention and Resilience to Drought

Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 407
Author(s):  
Ling Li ◽  
Yong-Jiang Zhang ◽  
Abigayl Novak ◽  
Yingchao Yang ◽  
Jinwu Wang
Keyword(s):  
Climate Variability ◽  
Sandy Soil ◽  
Water Retention ◽  
Sandy Soils ◽  
Crop Productivity ◽  
Future Research ◽  
Soil Water Retention ◽  
The World ◽  
Water Holding

In recent years, plants in sandy soils have been impacted by increased climate variability due to weak water holding and temperature buffering capacities of the parent material. The projected impact spreads all over the world, including New England, USA. Many regions of the world may experience an increase in frequency and severity of drought, which can be attributed to an increased variability in precipitation and enhanced water loss due to warming. The overall benefits of biochar in environmental management have been extensively investigated. This review aims to discuss the water holding capacity of biochar from the points of view of fluid mechanics and propose several prioritized future research topics. To understand the impacts of biochar on sandy soils in-depth, sandy soil properties (surface area, pore size, water properties, and characteristics) and how biochar could improve the soil quality as well as plant growth, development, and yield are reviewed. Incorporating biochar into sandy soils could result in a net increase in the surface area, a stronger hydrophobicity at a lower temperature, and an increase in the micropores to maximize gap spaces. The capability of biochar in reducing fertilizer drainage through increasing water retention can improve crop productivity and reduce the nutrient leaching rate in agricultural practices. To advance research in biochar products and address the impacts of increasing climate variability, future research may focus on the role of biochar in enhancing soil water retention, plant water use efficiency, crop resistance to drought, and crop productivity.

scholarly journals Distribution and function of carbamate hydrolase genes cehA and mcd in soils: the distinct role of soil pH

2018 ◽  
Vol 94 (6) ◽  
Author(s):  
Constantina Rousidou ◽  
Dionysis Karaiskos ◽  
Despoina Myti ◽  
Evangelos Karanasios ◽  
Panagiotis A Karas ◽  
...  
Keyword(s):  
Soil Ph ◽  
And Function ◽  
Distinct Role

scholarly journals Role of a cyanobacterial cover on structural stability of sandy soils in the Sahelian part of western Niger

Geoderma ◽  
2001 ◽  
Vol 101 (3-4) ◽  
pp. 15-30 ◽  
Author(s):  
O Malam Issa ◽  
Y Le Bissonnais ◽  
C Défarge ◽  
J Trichet
Keyword(s):  
Structural Stability ◽  
Sandy Soils

The Crisis of Social Institutions and Police Homicides: The Adverse Effects of Low Institutional Control

2021 ◽  
pp. 108876792110184
Author(s):  
Kamali’ilani T. E. Wetherell ◽  
Terance D. Miethe
Keyword(s):  
Public Policy ◽  
Adverse Effects ◽  
Census Data ◽  
Social Institutions ◽  
Crime Rates ◽  
Future Research ◽  
Homicide Rates ◽  
Institutional Control ◽  
Different Levels

Using U.S. census data and a multi-source database on officer-involved killings, the current study extends previous research by exploring the influence of measures of weak social control in economic, educational, and familial institutions on state rates of police homicide. States with lower levels of institutional control are found to have higher overall rates of police homicides and police killings involving Black, Hispanic, and White decedents. The significant effects of institutional control on these police homicide rates are generally found to exhibit contextual invariance across different levels of various control variables (e.g., comparisons of states with low or high violent crime rates, low vs high economic inequality, low vs high levels of urbanization). These results and the limitations of this study are discussed in terms of implications for future research and public policy on police homicides and the role of social institutions in minimizing the occurrence of these incidents.

Role of cysteine in jaundice hemorrhages

1935 ◽  
Vol 31 (8-9) ◽  
pp. 1114-1114
Keyword(s):  
Amino Acid ◽  
Obstructive Jaundice ◽  
Blood Clotting ◽  
In Vitro Experiments ◽  
Main Factor

The role of calcium, platelets, and other factors that were associated with bleeding was not confirmed in jaundice. Carr and Toote found that the amino acid cysteine was the main factor impeding blood clotting. In obstructive jaundice, this amino acid accumulates in the blood and in in vitro experiments and, when administered to animals, causes a deterioration in blood clotting.

THE ROLE OF COW PROCESSING IN IMPROVEMENT MILK QUALITY

2018 ◽  
Vol 1 (1) ◽  
pp. 59-63
Author(s):  
G. A. Larionov ◽  
◽  
O. Yu. Сhecheneshkina ◽  
E. S. Yatrusheva ◽  
N. I. Yendierov ◽  
...  
Keyword(s):  
Somatic Cell Count ◽  
Somatic Cells ◽  
Cow Milk ◽  
Microbiological Contamination ◽  
High Quality ◽  
Quality Of Milk ◽  
Correct Understanding ◽  
Main Factor

The main factor of determining the level of sanitary and hygienic indicators of the quality of milk produced is the hygiene of milking cows. The study of the role of hygiene of milking is of great importance for a correct understanding of the ways of solving the problem of obtaining high quality milk. Special attention of scientists and practitioners in recent years are focused on the development and implementation of highly effective detergents and disinfectants in the production of milk of cows. Many researchers and practitioners have directed their work to developing measures to prevent the entry of pathogenic microflora into milk during and after milking cows. In spite of many researches carried out, aimed at controlling the number of somatic cells in milk with the use of different products based on lactic acid, chlorhexidine and iodine, the problem of high quality milk production remains unresolved. In our work results of researches on the use of probiotic means for treatment of udders of cows are given. Processing the udder of cows with probiotic means before milking by Skin Cleaner, after milking by PIP Cow Teat Cleaner reduced the amount of somatic cells in cow milk 12,8-84,0%. The use of probiotic means Biomastim lowed somatic cell count of 18,4-51,9%. Microbiological contamination of milk using probiotic means for processing the udder before milking Skin Cleaner, after milking PIP Cow Teat Cleaner decreased 4,9- 70,4 times. The application of probiotic means Biomastim after milking on the teats led to the decrease in milk of cows QMAFAnM 5,0-6,6 times.

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