Comparative genomic studies of global gene expression in filamentous fungi grown on bagasse and sugarcane culm

• Grant number: 11/08945-9
• Support type: Regular Research Grants
• Duration: December 01, 2011 - May 31, 2014
• Field of knowledge: Biological Sciences - Genetics - Molecular Genetics and Genetics of Microorganisms
• Principal researcher: Juliana Velasco de Castro Oliveira
• Grantee: Juliana Velasco de Castro Oliveira
• Home Institution: Centro Nacional de Pesquisa em Energia e Materiais (CNPEM). Ministério da Ciência, Tecnologia e Inovações (Brasil). Campinas , SP, Brazil
• Assoc. researchers: Gustavo Henrique Goldman ; Marcos Silveira Buckeridge ; Roberto Marcondes Cesar Junior

Abstract

The dependence on fossil fuel sources as well as the concern about the environment has generated a worldwide interest in establishing new sources of fuel and energy. In this sense, the use of ethanol as a fuel is advantageous given its inexhaustible energy source and minimal environmental impact. Currently, Brazil is the world's second largest producer of ethanol, which is produced from sugar cane juice fermentation. However, several studies suggest that with the use of bagasse and straw, Brazil could double its production per hectare. Nevertheless, the use of this biomass presents a challenge, because is necessary to degrade plant cell wall structure composed of complex sugars (cellulose and hemicelluloses), into single fermentable sugar such as glucose. To achieve this aim, several types of hydrolytic enzymes are required which are known to be produced by a variety of microorganisms. Aspergillus niger and Trichoderma reesei are examples of cellulolytic microorganisms, capable of producing and secrete hydrolytic enzymes in large quantities. Although several studies have been performed with these microorganisms, our understanding of the exact mechanisms of degradation of these substrates remains unclear. Therefore this project aims to analyze the global gene expression of A. niger and T. reesei cultivated on medium containing bagasse and culm from sugarcane as a substrate, by massively parallel high-throughput sequencing of cDNA (RNA-seq). Besides contributing to the understanding of biomass degradation, the knowledge on the molecular level resulting from this work will reflect on new perspectives for the development of enzyme cocktails, enabling the large-scale production of second-generation ethanol. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BORIN, GUSTAVO PAGOTTO; SANCHEZ, CAMILA CRISTINA; DE SANTANA, ELIANE SILVA; ZANINI, GUILHERME KEPPE; CORREA DOS SANTOS, RENATO AUGUSTO; PONTES, ANGELICA DE OLIVEIRA; DE SOUZA, ALINE TIEPPO; TAVARES SOARES DAL'MAS, ROBERTA MARIA MENEGALDO; RIANO-PACHON, DIEGO MAURICIO; GOLDMAN, GUSTAVO HENRIQUE; et al. Comparative transcriptome analysis reveals different strategies for degradation of steam-exploded sugarcane bagasse by Aspergillus niger and Trichoderma reesei. BMC Genomics, v. 18, JUN 30 2017. (15/08222-8, 11/08945-9, 14/11766-7, 14/11733-1, 14/15799-7, 13/09541-4)

BORIN, GUSTAVO PAGOTTO; SANCHEZ, CAMILA CRISTINA; DE SOUZA, AMANDA PEREIRA; DE SANTANA, ELIANE SILVA; DE SOUZA, ALINE TIEPPO; PAES LEME, ADRIANA FRANCO; SQUINA, FABIO MARCIO; BUCKERIDGE, MARCOS; GOLDMAN, GUSTAVO HENRIQUE; DE CASTRO OLIVEIRA, JULIANA VELASCO. Comparative Secretome Analysis of Trichoderma reesei and Aspergillus niger during Growth on Sugarcane Biomass. PLoS One, v. 10, n. 6, JUN 8 2015. (11/08945-9, 13/09541-4, 13/01071-9)

DE VRIES, RONALD P.; RILEY, ROBERT; WIEBENGA, AD; AGUILAR-OSORIO, GUILLERMO; AMILLIS, SOTIRIS; UCHIMA, CRISTIANE AKEMI; ANDERLUH, GREGOR; ASADOLLAHI, MOJTABA; ASKIN, MARION; BARRY, KERRIE; et al. Comparative genomics reveals high biological diversity and specific adaptations in the industrially and medically important fungal genus Aspergillus. Genome Biology, v. 18, FEB 14 2017. (12/19040-0, 11/08945-9, 12/20549-4, 14/11766-7, 14/10351-8, 14/06923-6)