BULLETIN of the L.N. Gumilyov Eurasian National University. BIOSCIENCE Series

Cultivar specific influence of TBSV infection on tomatoes

2026-06-09T19:27:31+00:00

In this study, the effect of Tomato bushy stunt virus (TBSV) infection on Solanum
lycopersicum three cultivars and the model plant Nicotiana benthamiana were investigated. Accord
ing to our studies, the degree of infection by TBSV varies depending on the cultivar of tomatoes.
Cultivars Better boy and Pera are resistant, while Money maker cultivar was tolerant to TBSV
infection. These results show that the plants might contain different resistance genes that selectively
respond to the TBSV virus and indicate the presence of certain defence mechanisms within the
species. Moreover, the analysis carried out using the Chlorophyll Fluorescence Imaging System (Ch
FI) and fluorometer showed that despite the absence of visual infection symptoms in Money maker
tomato cultivars, there is an increase in the level of secondary metabolites and a slight reduction of
the photosynthesis activity.

Plant diseases of Green Zone in Astana

2026-06-09T19:30:17+00:00

According to the results of the first year of the survey, abiotic and biotic diseases of
trees and shrubs of the Green Zone around the city of Astana are shown. Surveys of green belt forest
plantations were carried out during the whole vegetation period of 2018. The overall condition of
the green belt forest plantations (vital and phytopathological) is generally good. Abiotic diseases of
forest plantations associated with soil and local climatic conditions are more common in the western
and north-western parts of the green belt. Diseases of a biotic nature are rarely observed in all
forest farms, and their occurrence depends mainly on the moisture factor of locality, species and
plant species in specific areas.

Effect of different concentrations of diatomite on microtropic level of barley(Hordeum vulgare L.)

2026-06-09T19:34:36+00:00

Application of diatomite to the soil in concentrations (from 1.5 to 3%) resulted in the increase of arbuscular
mycorrhiza fungi in root core of barley cultivar "Baysheshek". The highest microtropic was observed under 10% diatomite
concentration. Further increase of diatomite concentration resulted in slight decrease of barley microtropic level. At the same
time under different concentrations of diatomite from 1.5 to 10% the correlation between microtropic levels and dry mass of
aboveground parts of the plant is observed. The data obtained in the course of the study can be used in the development of
biotechnologies aimed at improving soil fertility and crop yields.

Comparative characteristics of different samples of Mugalzhar diatomite

2026-06-09T19:48:39+00:00

In present work a diatomite samples obtained from different sites of Mugalzhar deposit in Aktobe oblast were
characterized. For determination of chemical composition of the diatomite and the content of basic elements in per cent ratios
the scanning electron microscopy was used. The obtained data showed that all diatomite samples contain the same chemical
elements but in different amounts. The main chemical element was Si (silicium) and its content was 30-40%. High content of
mobile form of silicium was found in the sample C and its content correlated with the concentration monosilicilic acid. For the
study of seed germination and seedling development the concentrations of diatomite water suspension for barley seed priming
were optimized. The obtained results showed that after pre-sown priming of barley seeds in suspension of diatomite sample C
the percent of germination achieved 100% and seedlings tolerance to the salinity and drought was increased.

The study of the phenotypic properties of active strains of microorganisms capable of fermenting organic waste

2026-06-09T20:08:47+00:00

This paper presents the results of the isolation and screening of microorganisms that are promising for the
processing of organic waste in agricultural enterprises. Of the organic waste, 32 isolates were isolated by the method of
cumulative culture and screening of the isolated microorganisms for their ability to grow on livestock and poultry farms, the
ability to neutralize the unpleasant odors of manure, and also the ability to increase the temperature of organic substances
during growth. Based on the results of the screening, 15 cultures of microorganisms capable of reproduction in organic wastes
were selected. Further selection of cultures was carried out by enzymatic activity. Amylolytic, proteolytic, cellulolytic and lipase
activity of selected isolates was studied Phenotypic properties (physiological, biochemical, cultural and morphological) of active
strains of microorganisms capable of fermenting organic waste were studied by means of testing.

Plant protein expression system

2026-06-09T20:40:03+00:00

Currently, transient and transgenic expression of proteins in the plant system is used. It allows to get a certain
amount of protein in a short period of time. Also, it is safe and cost-effectively.