Taxonomia de espécies de Penicillium (sensu lato) reclassificadas como Talaromyces spp. isoladas de plantios de sisal (Agave sisalana) no Semiárido da Bahia

Abstract

Bahia ranks first in domestic production of sisal fiber (Agave sisalana Perrine ex Engelm), generating jobs and income to small farmers in the semiarid region. However, the red rot caused by Aspergillus niger has caused a decline in sisal fiber production. And a robust culture without management and cultural practices, biological control is a viable alternative since selected microorganisms antagonistic to the pathogen. Since sensu Penicllium is a broad group group of fungi inhabiting different environments and feature biotech supply, especially antagonistic, this study aimed to isolate and identify species sensu Penicllium of rhizosphere and endophytes from sisal crops in Conceição do Coité which is one of the leading sisal producers in the semiarid region of Bahia. Isolates with macroscopic characteristics sensu lato Penicillium were subcultured on half MEA aiming observed, color plate shape and release characteristics extrolitos this group, which were confirmed by amplification of regions of ITS and β-tubulin are reported as a barcode on the identification of sensu Penicillium. They were obtained 49 isolates of Penicillium broad sense, including representatives of Talaromyces and Penicillium groups, and some species such as Talaromyces pinophilus and Penicillium citrinum were isolated both tissues as in the rhizosphere associated with sisal culture. The sensu Penicillium species isolated and identified indicate that the sisal culture is associated with different species of this group, being first report for this host and interesting targets for future studies exploring its potential biotechnology.