Species composition of endophytic bacteria in cereal crop on the example of wheat and oats in Yakutia

This is the authors' abstract. We don't add key points for this paper.

The search for new species of endophytic bacteria that have a positive effect on plant development opens up prospects for the development of effective microbiological preparations for adaptive plant production. The study of microbial communities of endophytes inhabiting the stems, roots and tubers of agricultural crops is necessary for the further development of various biological products against plant diseases and pests. However, depending on the type of crop and varietal characteristics, the species diversity of bacteria may vary. Also, the species composition is influenced by the climatic conditions of cultivation, since many bacteria enter plants through soil, water, etc. The species composition of bacteria also varies in the ratio of gram-positive and gram-negative bacteria. Most studies of endophytic bacteria were carried out abroad; in Russia this direction is only gaining momentum. In Yakutia, such research is being carried out for the first time. In this regard, we have begun research to identify and study the species composition of various agricultural crops cultivated in Yakutia. The following cereal crops served as the object of research: wheat (Tr?ticum), oats (Av?na sativa). Almost the same number of bacterial species were found in wheat and oats (26 and 27). Bacteria of the Proteobacteria and Bacteroidota types predominated. Bacteria of the Rhodanobacteraceae type were isolated on wheat, which were not found on oats. Bacteria were mainly identified on the roots of plants, then on the stem and a minimal amount was found on the leaves of plants. Bacteria with a gram-negative morphotype predominated.