The capacity of phosphate absorption and gibberellin level of bacterium Bacillus strain from peppers- rhizosphere
Masniawaty1, Kahar Mustari2 , Astuti3, Gusmiaty3, Siti Halimah Larekeng3, Iradhatullah Rahim4a)
1 Department of Biology, Universitas Hasanuddin, Makassar
2 Department of Agrotehnology, Faculty of Agriculture, Universitas Hasanuddin, Makassar
3 Faculty of Forestry, Universitas Hasanuddin, Makassar
4 Agrotechnology, Faculty of Forestry, Animal Science, and Fishery, Muhammadiyah University, Parepare
Abstract
Microbes are capable to dissolve phosphate. Phosphate is the second essential component after N, which has a crucial role in photosynthesis and root development. A microbe that found around root area is the Bacterium Bacillus strain. This bacterium was isolated from peppers- roots. The purified isolates were quantitatively evaluated for their capacity to dissolve phosphate using Pikovskaya liquid medium with Ca3(PO4)2 as phosphate source. Meanwhile, production of gibberellin hormone was measured using Borrow et al (1995) method. Here, we reported levels of phosphate and gibberellin produced by the bacteria ranged from 19.0 up to 58.8 µg/L and 5.81 up to 12.79 µg/L, respectively. This results indicate that the Bacillus strain isolated from peppers- roots and root area can be utilized as plant growth-promoting bacterium.
Keywords: Bacillus strain, Gibberellin, Phosphate, Root area
Topic: Microbiology