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Type: Artigo de periódico
Title: dsRNA-induced gene silencing in Moniliophthora perniciosa, the causal agent of witches' broom disease of cacao
Author: dos Santos, ACC
Sena, JAL
Santos, SC
Dias, CV
Pirovani, CP
Pungartnik, C
Valle, RR
Cascardo, JCM
Vincentz, M
Abstract: The genome sequence of the hemibiotrophic fungus Moniliophthora perniciosa revealed genes possibly participating in the RNAi machinery. Therefore, studies were performed in order to investigate the efficiency of gene silencing by dsRNA. We showed that the reporter gfp gene stably introduced into the fungus genome can be silenced by transfection of in vitro synthesized gfpdsRNA. In addition, successful dsRNA-induced silencing of endogenous genes coding for hydrophobins and a peroxiredoxin were also achieved. All genes showed a silencing efficiency ranging from 18% to 98% when compared to controls even 28 d after dsRNA treatment, suggesting systemic silencing. Reduction of GFP fluorescence, peroxidase activity levels and survival responses to H(2)O(2) were consistent with the reduction of GFP and peroxidase mRNA levels, respectively. dsRNA transformation of M. perniciosa is shown here to efficiently promote genetic knockdown and can thus be used to assess gene function in this pathogen. (C) 2009 Elsevier Inc. All rights reserved.
Subject: Crinipellis perniciosa
Theobroma cacao
Country: EUA
Editor: Academic Press Inc Elsevier Science
Citation: Fungal Genetics And Biology. Academic Press Inc Elsevier Science, v. 46, n. 11, n. 825, n. 836, 2009.
Rights: fechado
Identifier DOI: 10.1016/j.fgb.2009.06.012
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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