The Yeast Signal Sequence Trap Identifies Secreted Proteins of the Hemibiotrophic Corn Pathogen Colletotrichum graminicola
The hemibiotroph Colletotrichum graminicola is the causal agent of stem rot and leaf anthracnose on Zea mays. Following penetration of epidermal cells, the fungus enters a short biotrophic phase, followed by a destructive necrotrophic phase of pathogenesis. During both phases, secreted fungal protei...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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The American Phytopathological Society
2008-10-01
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| Series: | Molecular Plant-Microbe Interactions |
| Subjects: | |
| Online Access: | https://apsjournals.apsnet.org/doi/10.1094/MPMI-21-10-1325 |
| _version_ | 1818646930746507264 |
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| author | Jorrit-Jan Krijger Ralf Horbach Michael Behr Patrick Schweizer Holger B. Deising Stefan G. R. Wirsel |
| author_facet | Jorrit-Jan Krijger Ralf Horbach Michael Behr Patrick Schweizer Holger B. Deising Stefan G. R. Wirsel |
| author_sort | Jorrit-Jan Krijger |
| collection | DOAJ |
| description | The hemibiotroph Colletotrichum graminicola is the causal agent of stem rot and leaf anthracnose on Zea mays. Following penetration of epidermal cells, the fungus enters a short biotrophic phase, followed by a destructive necrotrophic phase of pathogenesis. During both phases, secreted fungal proteins are supposed to determine progress and success of the infection. To identify genes encoding such proteins, we constructed a yeast signal sequence trap (YSST) cDNA-library from RNA extracted from mycelium grown in vitro on corn cell walls and leaf extract. Of the 103 identified unigenes, 50 showed significant similarities to genes with a reported function, 25 sequences were similar to genes without a known function, and 28 sequences showed no similarity to entries in the databases. Macroarray hybridization and quantitative reverse-transcriptase polymerase chain reaction confirmed that most genes identified by the YSST screen are expressed in planta. Other than some genes that were constantly expressed, a larger set showed peaks of transcript abundances at specific phases of pathogenesis. Another set exhibited biphasic expression with peaks at the biotrophic and necrotrophic phase. Transcript analyses of in vitro-grown cultures revealed that several of the genes identified by the YSST screen were induced by the addition of corn leaf components, indicating that host-derived factors may have mimicked the host milieu. |
| first_indexed | 2024-12-17T00:54:28Z |
| format | Article |
| id | doaj.art-4aa09d109c9a41e2b29e01be8080629c |
| institution | Directory Open Access Journal |
| issn | 0894-0282 1943-7706 |
| language | English |
| last_indexed | 2024-12-17T00:54:28Z |
| publishDate | 2008-10-01 |
| publisher | The American Phytopathological Society |
| record_format | Article |
| series | Molecular Plant-Microbe Interactions |
| spelling | doaj.art-4aa09d109c9a41e2b29e01be8080629c2022-12-21T22:09:38ZengThe American Phytopathological SocietyMolecular Plant-Microbe Interactions0894-02821943-77062008-10-0121101325133610.1094/MPMI-21-10-1325The Yeast Signal Sequence Trap Identifies Secreted Proteins of the Hemibiotrophic Corn Pathogen Colletotrichum graminicolaJorrit-Jan KrijgerRalf HorbachMichael BehrPatrick SchweizerHolger B. DeisingStefan G. R. WirselThe hemibiotroph Colletotrichum graminicola is the causal agent of stem rot and leaf anthracnose on Zea mays. Following penetration of epidermal cells, the fungus enters a short biotrophic phase, followed by a destructive necrotrophic phase of pathogenesis. During both phases, secreted fungal proteins are supposed to determine progress and success of the infection. To identify genes encoding such proteins, we constructed a yeast signal sequence trap (YSST) cDNA-library from RNA extracted from mycelium grown in vitro on corn cell walls and leaf extract. Of the 103 identified unigenes, 50 showed significant similarities to genes with a reported function, 25 sequences were similar to genes without a known function, and 28 sequences showed no similarity to entries in the databases. Macroarray hybridization and quantitative reverse-transcriptase polymerase chain reaction confirmed that most genes identified by the YSST screen are expressed in planta. Other than some genes that were constantly expressed, a larger set showed peaks of transcript abundances at specific phases of pathogenesis. Another set exhibited biphasic expression with peaks at the biotrophic and necrotrophic phase. Transcript analyses of in vitro-grown cultures revealed that several of the genes identified by the YSST screen were induced by the addition of corn leaf components, indicating that host-derived factors may have mimicked the host milieu.https://apsjournals.apsnet.org/doi/10.1094/MPMI-21-10-1325biotrophycell-wall-degrading enzymeseffector proteinsnecrotrophypeptidases |
| spellingShingle | Jorrit-Jan Krijger Ralf Horbach Michael Behr Patrick Schweizer Holger B. Deising Stefan G. R. Wirsel The Yeast Signal Sequence Trap Identifies Secreted Proteins of the Hemibiotrophic Corn Pathogen Colletotrichum graminicola Molecular Plant-Microbe Interactions biotrophy cell-wall-degrading enzymes effector proteins necrotrophy peptidases |
| title | The Yeast Signal Sequence Trap Identifies Secreted Proteins of the Hemibiotrophic Corn Pathogen Colletotrichum graminicola |
| title_full | The Yeast Signal Sequence Trap Identifies Secreted Proteins of the Hemibiotrophic Corn Pathogen Colletotrichum graminicola |
| title_fullStr | The Yeast Signal Sequence Trap Identifies Secreted Proteins of the Hemibiotrophic Corn Pathogen Colletotrichum graminicola |
| title_full_unstemmed | The Yeast Signal Sequence Trap Identifies Secreted Proteins of the Hemibiotrophic Corn Pathogen Colletotrichum graminicola |
| title_short | The Yeast Signal Sequence Trap Identifies Secreted Proteins of the Hemibiotrophic Corn Pathogen Colletotrichum graminicola |
| title_sort | yeast signal sequence trap identifies secreted proteins of the hemibiotrophic corn pathogen colletotrichum graminicola |
| topic | biotrophy cell-wall-degrading enzymes effector proteins necrotrophy peptidases |
| url | https://apsjournals.apsnet.org/doi/10.1094/MPMI-21-10-1325 |
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