KMID : 0880220130510010070
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Journal of Microbiology 2013 Volume.51 No. 1 p.70 ~ p.81
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Beginning to understand the role of sugar carriers in Colletotrichum lindemuthianum: the function of the gene mfs1
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Monalessa Fabia Pereira
Denise Mara Soares Bazzolli Marisa Vieira de Queiroz Elza Fernandes de Araujo Carolina Maria de Araujo dos Santos
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Abstract
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Fungi of the Colletotrichum genus are among the most prominent phytopathogens that cause diseases with a considerable economic impact, such as anthracnose. The hemibiotrophic fungus Colletotrichum lindemuthianum (teleomorph Glomerella cingulata f. sp. phaseoli) is the causal agent of the anthracnose of the common bean; and similarly to other phytopathogens, it uses multiple strategies to gain access to different carbon sources from its host. In this study, we examine mfs1, a newly identified C. lindemuthianum hexose transporter. The mfs1 gene is expressed only during the necrotrophic phase of the fungus¡¯ interaction within the plant and allows it to utilize the available sugars during this phase. The deletion of mfs1 gene resulted in differential growth of the fungus in a medium that contained glucose, mannose or fructose as the only carbon source. This study is the first to describe a hexose transporter in the hemibiotrophic pathogen C. lindemuthianum and to demonstrate the central role of this protein in capturing carbon sources during the necrotrophic development of the plant/pathogen interaction.
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KEYWORD
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Colletotrichum lindemuthianum, hemibiotrophic lifestyle, anthracnose, MFS transporters, Sugar Porter family
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