Albrectsen, Benedicte Riber

Fossdal, Carl Gunnar

Karlsson, Jan

Solheim, Halvor

Yaqoob, Nadeem

English

PubMed

Carl Gunnar Fossdal

Nadeem Yaqoob

Halvor Solheim

Jan Karlsson

Benedicte Riber Albrectsen

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BMC Proceedings

Local and systemic defense response in Aspen clones: contrasting defense response to biotrophic and necrotrophic pathogens

Fossdal Carl

Yaqoob Nadeem

Solheim Halvor

Karlsson Jan

Albrectsen Benedicte

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Carl Fossdal

Benedicte Albrectsen

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POSTER PRESENTATION Open Access
Local and systemic defense response in Aspen
clones: contrasting defense response to
biotrophic and necrotrophic pathogens
Carl Gunnar Fossdal1*, Nadeem Yaqoob1, Halvor Solheim1, Jan Karlsson2, Benedicte Riber Albrectsen2
From IUFRO Tree Biotechnology Conference 2011: From Genomes to Integration and Delivery
Arraial d’Ajuda, Bahia, Brazil. 26 June - 2 July 2011
Trees are exposed to a variety of pathogenic fungi. The
defense response toward a biotroph may require a dif-
ferent strategy that toward a necrotroph. To understand
the key processes of defense responses toward patho-
genic fungi in aspen (Populus tremulae) at the transcript
level we inoculated clones of this species with a foliar
rust on the leaves and a necrotroph in the bark. Leaf
samples were collected from above the inoculation site
to examine the long distance (systemic) defense
responses and bark tissue around the site of inoculation
examined for the local response as early as day1 post
treatments. We performed microarray experiments on
the biotrophic and necrotrophic interaction and between
healthy controls of two SwAsp clones. Selected candi-
date genes were also examined in more detail by qRT-
PCR and chemical analysis for phenols and tannins was
also performed. We found that the two clones respond
in a very different in fashion at the transcriptional level
to both the biotrophic and necrotrophic pathogen. The
more resistant clone responded systemically within 24
hours while little response at the transcriptional level
was detected in the more susceptible clone in response
to the biotroph, while indications of suppression in
response to the necrotroph was found.
Author details
1The Norwegian Forest and Landscape Institute, Norway. 2Umeå Plant
Science Centre, Sweden.
Published: 13 September 2011
doi:10.1186/1753-6561-5-S7-P83
Cite this article as: Fossdal et al.: Local and systemic defense response
in Aspen clones: contrasting defense response to biotrophic and
necrotrophic pathogens. BMC Proceedings 2011 5(Suppl 7):P83.
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* Correspondence: foc@skogoglandskap.no
1The Norwegian Forest and Landscape Institute, Norway
Full list of author information is available at the end of the article
Fossdal et al. BMC Proceedings 2011, 5(Suppl 7):P83
http://www.biomedcentral.com/1753-6561/5/S7/P83
© 2011 Fossdal et al; licensee BioMed Central Ltd. This is an open access article distributed under the terms of the Creative Commons
Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in
any medium, provided the original work is properly cited.


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Local and systemic defense response in Aspen clones: contrasting defense response to biotrophic and necrotrophic pathogens

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