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  Colonization of roots of cultivated Solanum lycopersicum by dark septate and other ascomycetous endophytes

Franken, P., Andrade-Linares, D. R., Grosch, R., Rexer, K.-H., Kost, G., Restrepo, S., et al. (2011). Colonization of roots of cultivated Solanum lycopersicum by dark septate and other ascomycetous endophytes. Mycologia, 103(4), 710-721. doi:10.3852/10-329.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-2200-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-2201-C
Genre: Journal Article

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 Creators:
Franken, P.1, Author
Andrade-Linares, D. R.1, Author
Grosch, R.1, Author
Rexer, Karl-Heinz1, Author
Kost, G.1, Author
Restrepo, S.1, Author
de Garcia, M. C. C.1, Author
Maximova, E.2, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Microscopy, Infrastructure Groups and Service Units, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753304              

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Free keywords: ascomycota dark septate endophyte (dse) plant-fungal interactions root colonization tomato (solanum lycopersicum l.) fungus piriformospora-indica sub-alpine plants phialocephala-fortinii rhizopycnis-vagum leptodontidium-orchidicola trichoderma-harzianum systemic resistance defense responses diversity barley
 Abstract: Tomato (Solanum lycopersicum L.) roots from four different crop sites in Colombia were surface sterilized and 51 fungal isolates were obtained and conserved for further analysis. Based on microscopical observations and growth characteristics, 20 fungal isolates corresponded to genus Fusarium, six presented asexual conidia different from Fusarium, eight were sterile mycelia, seven of which had dark septate hyphae and 17 did not continue to grow on plates after being recovered from conservation. Growth on different media, detailed morphological characterization and ITS region sequencing of the six sporulating and eight sterile isolates revealed that they belonged to different orders of Ascomycota and that the sterile dark septate endophytes did not correspond to the well known Phialocephala group. Interactions of nine isolates with tomato plantlets were assessed in vitro. No effect on shoot development was revealed, but three isolates caused brown spots in roots. Colonization patterns as analyzed by confocal microscopy differed among the isolates and ranged from epidermal to cortical penetration. Altogether 11 new isolates from root endophytic fungi were obtained, seven of which showed features of dark septate endophytes. Four known morphotypes were represented by five isolates, while six isolates belonged to five morphotypes of putative new unknown species.

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Language(s): eng - English
 Dates: 2011-02-112011
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: ISI:000292409200003
DOI: 10.3852/10-329
ISSN: 0027-5514 (Print) 0027-5514 (Linking)
URI: ://000292409200003 http://www.mycologia.org/content/103/4/710
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Title: Mycologia
Source Genre: Journal
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Pages: - Volume / Issue: 103 (4) Sequence Number: - Start / End Page: 710 - 721 Identifier: -