Role in pathogenesis of two endo-beta-1,4-xylanase genes from the vascular wilt fungus Fusarium oxysporum

Fungal Genetics and Biology : FG & B
E Gómez-GómezConcepcion Hera

Abstract

A gene, xyl4, whose predicted amino acid sequence shows significant homology with family 11 xylanases, was identified from the tomato vascular wilt fungus Fusarium oxysporum f. sp. lycopersici. Expression of xyl4 is induced on oat spelt xylan as the carbon source, subject to carbon catabolite repression and preferentially expressed at alkaline ambient pH. Transcript levels of xyl4 on an inducing carbon source are differentially regulated by the nature and concentration of the nitrogen source. As shown by RT-PCR, xyl4 is expressed by F. oxysporum during the entire cycle of infection on tomato plants. Targeted inactivation of xyl4 and of xyl3, a previously identified gene of F. oxysporum f. sp. lycopersici encoding a family 10 xylanase, had no detectable effect on virulence on tomato plants, demonstrating that both genes are not essential for pathogenicity.

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Citations

May 19, 2006·Biochemical and Biophysical Research Communications·Didier HatschJean-Marc Jeltsch
Mar 22, 2013·Molecular Biology and Evolution·Patrick C BrunnerBruce A McDonald
May 31, 2013·Molecular Plant-microbe Interactions : MPMI·Gustavo Bravo-RuizM Isabel G Roncero
Jan 13, 2006·Molecular Plant-microbe Interactions : MPMI·Nélida BritoCeledonio González
May 6, 2006·Molecular Plant-microbe Interactions : MPMI·Makedonka Mitreva-DautovaGeert Smant
Aug 29, 2007·Molecular Plant-microbe Interactions : MPMI·Fernando Calero-NietoConcepcion Hera
Sep 16, 2003·Molecular Plant-microbe Interactions : MPMI·Jeffrey A Rollins
Jan 23, 2013·Plant Physiology and Biochemistry : PPB·Luca SellaFrancesco Favaron
Oct 1, 2008·Trends in Plant Science·Dario CantuAnn L T Powell
Aug 1, 2007·Fungal Genetics and Biology : FG & B·Fernando Calero-NietoM Isabel G Roncero
Sep 1, 2003·Molecular Plant Pathology·Antonio Di PietroM Isabel G Roncero
Aug 19, 2008·Molecular Plant Pathology·Ana Lilia Martínez RochaM Isabel G Roncero
Oct 30, 2014·Biotechnology Letters·María Alejandra Reyes-Medina, Karla Lizbeth Macías-Sánchez
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Jul 1, 2003·The New Phytologist·Ghislaine RecorbetClaude Alabouvette

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