Aims and Scope

The Open Agriculture Journal is an Open Access online journal, which publishes research articles, reviews/mini-reviews and letters in all areas of agricultural science. Topics covered include, agronomy; plant and animal breeding; genetics; agricultural biotechnology; crop physiology and agroecology; soil science and agroclimatology; agricultural economics and rural sociology; and sustainable systems. Agricultural biotechnology (including tissue culture, molecular markers, molecular diagnostics, vaccines, genetic engineering, genome editing as well as synthetic biology) to modify living organisms: microorganisms, fungi, plants and animals).


The scope of the journal includes but is not limited to:

  • Crop protection and Cultivation
  • Animal Science and Aquaculture
  • Pharmacognosy and Pharmaceutical Development
  • Environmental implications of agricultural land
  • Horticulture
  • Forestry
  • Agricultural Sciences, including Genetics and Agricultural Biotechnology
  • Environmental Sciences, including prevention and correction of adverse environmental effects (e.g., soil degradation, waste management, bioremediation)


Recent Articles

Dosed Exposure to Low Temperature as a Breeding Background in The Selection of Gene Pool Breeds of Chickens for Viral Vaccines Production

Olga I. Stanishevskaya, Elena S. Fedorova

Background:

One of the ways to utilize the potential of local breeds is to use them as producers of raw materials for the bio-industry (production of vaccines and diagnostics for animals and humans).

Methods:

Breeding of Russian White (PRWC) laying hens in 5 generations was carried out with the aim of increasing the output of allantois-amniotic fluid of embryos with a selective background (cooling of hatching eggs during the sensitive period of embryogenesis). In F5, the thermoregulation capabilities of 7-day-old PRWC chickens were studied in comparison with Amrox chickens under the influence of a daily stress factor (cooling at +10oC for 30 minutes) and raising at +22oC. The level of allantois-amniotic fluid output and biological activity of the Newcastle disease virus in F5 PRWC embryos in comparison with F0 and commercial line embryos was evaluated.

Results:

Day-old PRWC chicks responded to exposure to low sublethal temperature with muscle shivering, but, unlike Amrox chickens, they were active and retained the reflex of searching for food. PRWC chickens raised at low temperatures up to 7 days of age maintained the same growth rate as chickens raised at a common regime but used less residual yolk, which practically did not decrease the body temperature, and change the level of thyrotrophic hormone in response to the dosed exposure at low temperatures at 7 days of age. The content of doses of the Newcastle disease virus (EID50) in the extraembryonic fluid of F5-embryos of PRWC was 32.3 times higher than that of commercial line ones.

Conclusion:

PRWC chicks in the early neonatal period are more reactive at low temperature and have better thermoregulation mechanisms. PRWC embryos can be recommended for use in the production of various viral vaccines as well as diagnosticums.


December 31, 2020
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Editor's Choice

Induction of Bacterial Canker Resistance in Tomato Plants Using Plant Growth Promoting Rhizobacteria

Yuliya Kolomiiets, Ivan Grygoryuk, Artur Likhanov, Lyudmila Butsenko, Yaroslav Blume

Background:

By inducing the production of inhibitory allelochemicals and mechanisms of systemic resistance Plant Growth Promoting Bacteria (PGPB) help plants to cope with stresses.

Materials and Methods:

In this study cell suspensions of Bacillus subtilis, Pseudomonas fluorescens or Azotobacter chroococcum were used to test the efficacy of these PGPB in inducing resistance in tomato (Lycopersicon esculentum Mill) against Clavibacter michiganensis subsp michiganensis, a bacteria known to cause canker disease. To test this hypothesis, seedlings of Chaika variety, characterized by short growing, early-ripening, high productivity and resistance against fusarium and the C. michiganensis strain ІZ-38 isolated in Kyiv were employed.

Results and Conclusion:

The use of cell suspensions of the PGPB B. subtilis, A. chroococcum or P. fluorescens induced an increment in the resistance of tomato plants against the causative agent of bacterial canker (C. michiganensis subsp. michiganensis) by 42–50%. PGPB in fact promoted in C. michiganensis infected tomato plants: i) the accumulation of chlorophyll a and b and carotenoids; ii) the thickening of the upper and lower epidermis of leaves; iii) the deposition of biopolymers with protective properties in epidermal cells; iv) the activity of the peroxidase enzyme and v) the net productivity of photosynthesis.


December 31, 2019
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