Characterization of rhizobacteria secondary metabolites on maize (Zea mays) in marginal land

Abstract Maize is one of the strategic food crops and has economic value could be developed because its position as main carbohydrate protein source after rice. This a reference for us to increase maize cultivation, seeing role quite large, availability less stable every year. can grow optimally on productive land marginal land, but at this time more used rice production. One alternative production especially dryland. The problem in dryland limited water. way overcome by inoculating Rhizobacteria which growth resistance drought. possess tremendous potential modulating physiological response water deprivation, thus ensuring plant survival under such stressful conditions. research aimed find rhizobacteria have secondary metabolite exploration isolation was conducted University Muhammadiyah Malang. results obtained 10 isolates capable synthesizing extracellular metabolites: osmoprotectants, phytohormones, organopesticides that plants. analysis GS-MS (Gas Chromatography-Mass Spectrometry) showed three compounds were synthesized. osmoprotectants compound synthesize ware found namely: (a) (2E)-3,7-dimethylocta-2,6-dienal 16.66%;(b) (E)-hept-2-enal12.55%;(c)2-methylsulfanylethanamine 5.34%; (d) 1,3,5-trimethoxybenzene 4.42%. It also phytohormones: cinnolino [4,3-b] quinoxaline 6.00%; (b) 1-methyl-2-phenylindole 5.90%; (c) 1H-Indole 3.64%; N-2-Fluorenylperfluorpropionamid 3.02%. These able synthesize: 2-chloro-4-methoxy phenol 11.32%; (E)-non-2-enal 9.87%; 4-chloro-2,6-dipyridin-2-ylpyridine 7.07%; 2-(4-chlorophenyl) hexane nitrile 6.45%. Osmprotectant aim protect cells from drought conditions, phytohormones stimulate pests diseases.