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- Title
THE SPECIES COMPOSITION OF EPIPHYTIC MICROORGANISMS AND THEIR INFLUENCE ON ROOTS EXCRETORY ACTIVITY OF WHEAT AND PEA SEEDLINGS.
- Authors
Azeez, Z. A.; Bozhkov, A. I.; Mahmood, M. T.; Kovalova, M. K.
- Abstract
Microorganisms living on the seeds surface has gained an increasing interest in recent years. Especially, in terms of the growth regulation mechanisms and plant development and further in the framework of root biotechnologies in the preparation of biologically active compounds. The species composition of epiphytic microorganisms on the surface of wheat and pea grains have been explored. To check the possibility of their removal, two methods of pre-sowing treatment of seeds were used: (1-potassium permanganate; 2-ethyl alcohol and sodium hypochlorite). The effect of pre-sowing treatment of seeds on germination, seedling growth rate and excretion rate of root exudates are examined from the 1st to 3rd day of growth. It was found that, there were two types of bacteriaon the surface of wheat seeds (Pantoea agglomerans and Pseudomonas fluorescens), and four specieson peas seeds (Klebsiella pneumoniae, Bacillus safensis, Bacillus pumilus, Staphylococcus pasteuri). The presowing treatment of wheat by ethyl alcohol and sodium hypochlorite allows to remove bacteria from the surface of wheat seeds. Such pre-sowing treatment increased the specific growth rate of seedlings in the 2nd and 3rd days of growth and the intensity of root excretion in the early stages of growth, but reduced germination in 2,5 times in the 3rd day of growth. The pre-sowing treatment of pea seeds by potassium permanganate made it possible to selectively remove only one type of pathogenic microorganisms – Staphylococcus. Conversely, seed treatment by alcohol and sodium hypochlorite - removed Klebsiella only. Such treatment did not affect the germination, growth rate and excretory activity of the root. It is concluded that these methods of pre-sowing seed treatment can be used to obtain root exudates in aquatic culture.
- Subjects
SEEDLINGS; EPIPHYTIC bacteria; WHEAT; PEAS; BIOTECHNOLOGY; POTASSIUM permanganate
- Publication
Biochemical & Cellular Archives, 2019, Vol 19, Issue 2, p3809
- ISSN
0972-5075
- Publication type
Article
- DOI
10.35124/bca.2019.19.2.3809