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Genome sequence of Talaromyces piceus 9-3 provides insights into lignocellulose degradation.

ABSTRACT: Many species of Penicillium have exhibited great potential for lignocellulose hydrolysis. The filamentous fungus Talaromyces piceus 9-3 (anamorph: Penicillium piceum), which was isolated from compost wastes in China, was sequenced in this study. Compared with the cellulase producer T. reesei, T. piceus 9-3 processes a lignocellulolytic enzyme system comprising more diverse enzymatic components, especially hemicellulases. This report will facilitate the use of this strain for biomass degradation.

SUBMITTER: He R

PROVIDER: S-EPMC5634967 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature

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Genome sequence of Talaromyces piceus 9-3 provides insights into lignocellulose degradation.

He Ronglin R Bai Xue X Cai Penglin P Sun Cheng C Zhang Dongyuan D Chen Shulin S

3 Biotech 20171010 6

Many species of Penicillium have exhibited great potential for lignocellulose hydrolysis. The filamentous fungus Talaromyces piceus 9-3 (anamorph: Penicillium piceum), which was isolated from compost wastes in China, was sequenced in this study. Compared with the cellulase producer T. reesei, T. piceus 9-3 processes a lignocellulolytic enzyme system comprising more diverse enzymatic components, especially hemicellulases. This report will facilitate the use of t ...[more]

PMID: 29062678

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Project description:BackgroundWalking catfish (Clarias batrachus) is a freshwater fish capable of air-breathing and locomotion on land. It usually inhabits various low-oxygen habitats, burrows inside the mudflat, and sometimes "walks" to search for suitable environments during summer. It has evolved accessory air-breathing organs for respiring air and corresponding mechanisms to survive in such challenging environments. Thereby, it serves as a great model for understanding adaptations to terrestrial life.ResultsComparative genomics with channel catfish (Ictalurus punctatus) revealed specific adaptations of C. batrachus in DNA repair, enzyme activator activity, and small GTPase regulator activity. Comparative analysis with 11 non-air-breathing fish species suggested adaptive evolution in gene expression and nitrogenous waste metabolic processes. Further, myoglobin, olfactory receptor related to class A G protein-coupled receptor 1, and sulfotransferase 6b1 genes were found to be expanded in the air-breathing walking catfish genome, with 15, 15, and 12 copies, respectively, compared to non-air-breathing fishes that possess only 1-2 copies of these genes. Additionally, we sequenced and compared the transcriptomes of the gill and the air-breathing organ to characterize the mechanism of aerial respiration involved in elastic fiber formation, oxygen binding and transport, angiogenesis, ion homeostasis and acid-base balance. The hemoglobin genes were expressed dramatically higher in the air-breathing organ than in the gill of walking catfish.ConclusionsThis study provides an important genomic resource for understanding the adaptive mechanisms of walking catfish to terrestrial environments. It is possible that the coupling of enhanced abilities for oxygen storage and oxygen transport through genomic expansion of myoglobin genes and transcriptomic up-regulation of hemoglobin and angiogenesis-related genes are important components of the molecular basis for adaptation of this aquatic species to terrestrial life.

Dataset Information

Genome sequence of Talaromyces piceus 9-3 provides insights into lignocellulose degradation.

Publications

Genome sequence of <i>Talaromyces piceus</i> 9-3 provides insights into lignocellulose degradation.

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