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  • Title: Promising cellulolytic fungi isolates for rice straw degradation.
    Author: Pedraza-Zapata DC, Sánchez-Garibello AM, Quevedo-Hidalgo B, Moreno-Sarmiento N, Gutiérrez-Rojas I.
    Journal: J Microbiol; 2017 Sep; 55(9):711-719. PubMed ID: 28865071.
    Abstract:
    The objective of this study was to evaluate the potential of eight fungal isolates obtained from soils in rice crops for straw degradation in situ. From the initial eight isolates, Pleurotus ostreatus T1.1 and Penicillium sp. HC1 were selected for further characterization based on qualitative cellulolytic enzyme production and capacity to use rice straw as a sole carbon source. Subsequently, cellulolytic, xylanolytic, and lignolytic (Pleurotus ostreatus) activity on carboxymethyl cellulose, oat xylan, and rice straw with different nitrogen sources was evaluated. From the results obtained it was concluded both isolates are capable to produce enzymes necessary for rice straw degradation. However, their production is dependent upon carbon and nitrogen source. Last, it was established that Pleurotus ostreatus T1.1 and Penicillium sp. HC1 capability to colonize and mineralize rice straw, in mono-and co-culture, without affecting nitrogen soil content.
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