Plant Growth-Promoting (PGP) Traits of Endophytic Bacteria from In Vitro Cultivated Tectona grandis L.f

Tectona grandis L.f. (teak) is a tropical tree cultivated mainly due to its resistance, valuable wood and tolerance biotic abiotic factors. An abundant bacteria community exists in teak tissues knowledge of the functional roles endophytic bacteria, from vitro tissue culture, essential for improving micropropagation techniques. In this study, we isolated with plant growth-promoting (PGP) traits two clones (Proteca® A3 E4) calli, leaves, stems segments culture medium. We analyzed colony pigmentation, gram reaction, evaluated PGP (phosphorous solubilization, nitrogen fixation indol-acetic acid production) 54 colonies clone 50 E4. A total 35 42 E4 were capable fixing nitrogen. Four solubilizing phosphorous (P-Ca3(PO4)2), while no strain showed that capacity. Furthermore, 49 capacity synthesize acid, only 4 presented characteristic. also identified six by analysis 16S-23S rDNA intergenic spacer region, showing high identity genera Curtobacterium sp., Ochrobactrum Bacillus spp. Therefore, demonstrate here bacterial existing tissues, including those plants, have can be further harnessed preparation bioformulations, example. Our findings open possibility studying these more closely order understand their association growth.