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  The APSES transcription factor LmStuA is required for sporulation, pathogenic development and effector gene expression in Leptosphaeria maculans

Soyer, J. L., Hamiot, A., Ollivier, B., Balesdent, M.-H., Rouxel, T., & Fudal, I. (2015). The APSES transcription factor LmStuA is required for sporulation, pathogenic development and effector gene expression in Leptosphaeria maculans. Molecular Plant Pathology, 12249. doi:10.1111/mpp.12249.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0027-D16A-D Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0027-D2A6-0
Genre: Journal Article

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 Creators:
Soyer, Jessica L.1, Author           
Hamiot, Audrey, Author
Ollivier, Bénédicte, Author
Balesdent, Marie-Helène, Author
Rouxel, Thierry, Author
Fudal, Isabelle, Author
Affiliations:
1Max Planck Fellow Group Environmental Genomics, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_2068284              

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Free keywords: Leptosphaeria maculans; conidiation; effectors; morphogenesis; oilseed rape; regulation
 Abstract: Leptosphaeria maculans causes stem canker of oilseed rape (Brassica napus). The APSES transcription factor StuA is a key developmental regulator of fungi, involved in morphogenesis, conidia production and also more recently described as required for secondary metabolite production and for effector gene expression in phytopathogenic fungi. We investigated the involvement of the orthologue of StuA in L. maculans, LmStuA, in morphogenesis, pathogenicity and effector gene expression. LmStuA is induced during mycelial growth and at 14 days after infection, corresponding to the development of pycnidia on oilseed rape leaves, consistent with the function of StuA described so far. We set up the functional characterization of LmStuA using an RNA interference approach. Silenced LmStuA transformants showed typical phenotypic defects of StuA mutants with altered growth in axenic culture and impaired conidia production and perithecia formation. Silencing of LmStuA abolished the pathogenicity of L. maculans on oilseed rape leaves and also resulted in a drastic decrease in expression of at least three effector genes during in planta infection, suggesting either that LmStuA regulates, directly or indirectly, the expression of several effector genes in L. maculans or that the infection stage in which effectors are expressed is not reached when LmStuA expression is silenced.

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Language(s): eng - English
 Dates: 2015-02-242015-04-15
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1111/mpp.12249
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Title: Molecular Plant Pathology
Source Genre: Journal
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Publ. Info: Oxford, UK : Blackwell Science
Pages: 6 S. Volume / Issue: - Sequence Number: 12249 Start / End Page: - Identifier: ISSN: 1464-6722
CoNE: https://pure.mpg.de/cone/journals/resource/963017843292