Production and optimization of indole 3-acetic acid (IAA) and siderophores by Purpureocillium lilacinum LPSC # 876 using a keratin waste as substrate

CAVELLO, IVANA; CRESPO J.M.; CAVALITTO SEBASTIÁN; LUNA M F

Mar del Plata

Congreso; VIII Encuentro Latinoamericano y del Caribe de Biotecnología REDBIO-Argentina 2013; 2013

REDBIO

Rhizosphere is a dynamic environment, which harbours diverse groups of microorganisms. Some of the fungi, which directly or indirectly stimulate plant growth, have been referred as plant growth promoting fungus (PGPF). PGPF promote growth of several crops by increasing uptake of nitrogen, iron (thought siderophores) and phosphorus; synthesis of phytohormones and by controlling plant diseases. The present study was undertaken to study the statistical optimization of medium components for improved Indole-3- acetic acid (IAA) and siderophores production by Purpureocillium lilacinum growing on a keratin waste. Maximum production of these compounds was achieved in a medium containing 2 g/l of tryptophan and 1.2 mg/l of iron, after 96 h of incubation. Till date, there is no information on statistical optimization of medium components for IAA and siderophores production by P. lilacinum. These findings highlight that crude extract obtained from the biodegradation of hair waste has a potential to be used as biofertilizer or bioenhancer for plant growth improvement.