Özet:

Root bacteria, which can be colonized in the roots of the plant and are in a symbiotic relationship with the plants, form a large group of microorganisms that are used as biological cells. When applied to the seed, plant surface and soil, biological gums containing living microorganisms can be colonized in the root surface or in the inner tissues of the plant and increase plant development by providing the basic compounds that the plants need. This study has studied the effects of bacteria (PGPRs) that promote plant development derived from the roots of healthy grain plants (Triticum aestivum L.) on the development of grain plants. For the purpose of isolating PGPR bacteria, root samples were taken from 9 different grain fields in Hatay province. 120 bacteria were isolated and diagnosed with MALDI-TOF and the bacterial isolates were found to belong to Pseudomonas, Bacillus, Micrococcus, Arthrobacter, Microbacterium, Paenibacillus, Clostridium, Weeksella, Exiguobacterium, Acinetobacter, Brevundimonas, Providencia, and Corynobacterium. Among bacterial insulates, 73 PGPR insulates have been applied to grain seeds, and their effects on root and extraction development have been determined. Bacterially applied seeds have increased root growth in in vitro conditions by 7.1 to 70.6 per cent, compared to in vitro conditions by 7.6 to 102 per cent. However, 4 isolates (Pseudomonas libanensis 1KRK10, Pseudomonas kilonensis 3KRK7, Corynobacterium urealyticum 6ALD5 and Bacillus pumilis 10ASO1) negatively affected root development. Also, the phosphate solving capabilities of the PGPR bacterial insulates and the production quantities of siderofor have been determined. The most effective PGPR isolate in the phosphate resolution test was identified as Pseudomonas kilonensis 6ALD13, while the most effective in the production of siderofor was identified as Bacillus mojavensis 5DRC4.

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