THE ROLE OF PLANT-MICROBE SYMBIOSESIN INCREASING STRESS TOLERANCE OF CEREAL CROPS IN THE CIS-URAL REGION
DOI:
https://doi.org/10.7242/1998-2097/2018.1.3Keywords:
plant-microbe interaction, cereal crops, stress tolerance, photosynthetic pigments, phytohormonesAbstract
Rhizosphere and epiphytic bacteria isolated from the saline soils of the Perm region and also from the surface of cereal crops seedlings are able to form associations with agricultural crops. It is established that the activation of the mechanisms of cold resistance of winter rye, wheat, triticale and salt tolerance of spring wheat by increasing of carotenoid concentration is regulated by associative bacteria. Application of mineral presowing treatment of winter crops leads to qualitative changes in associative bacteria composition and also reduces photosynthetic potential of wheat and triticale after herbicides treatment. Associative methylobacteria under salt stress have major impact on host plant antioxidant system activation (synthesis of carotenoids) than nitrogen-fixing bacteria. Epiphytic halotolerant nitrogen-fixing, nitrate-reducing and denitrifying bacteria of spring cereals (wheat, oat, rye) exhibiting phosphate solubilizing activity under salt stress in the soil.
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