Skip Navigation



JXB Advance Access published online on October 16, 2006
Journal of Experimental Botany, doi:10.1093/jxb/erl155
This Article
Right arrow FREE Full Text (PDF) Freely available
Right arrow All Versions of this Article:
57/14/3911    most recent
erl155v1
Right arrow E-letters: Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when E-letters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Right arrow Disclaimer
Google Scholar
Right arrow Articles by Calo, L.
Right arrow Articles by Romero, L. C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Calo, L.
Right arrow Articles by Romero, L. C.
Agricola
Right arrow Articles by Calo, L.
Right arrow Articles by Romero, L. C.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author [2006]. Published by Oxford University Press [on behalf of the Society for Experimental Biology]. All rights reserved. For Permissions, please e-mail: journals.permissions@oxfordjournals.org
Received May 19, 2006
Accepted August 11, 2006

RESEARCH PAPER

Leaf hairs influence phytopathogenic fungus infection and confer an increased resistance when expressing a Trichoderma {alpha}-1,3-glucanase

Leticia Calo 1, Irene García 1, Cecilia Gotor 1, and Luis C. Romero 1 *

1 Instituto de Bioquímica Vegetal y Fotosíntesis, Centro de Investigaciones Científicas Isla de la Cartuja, CSIC and Universidad de Sevilla, Avda. Américo Vespucio 49, E-41092 Sevilla, Spain

* To whom correspondence should be addressed.
Luis C. Romero, E-mail: lromero{at}ibvf.csic.es


  Abstract

The leaf surface of a very large number of plant species are covered by trichomes. Non-glandular trichomes are specialized unicellular or multicellular structures that occur in many different plant species and function in xenobiotic detoxification and protecting the plant against pest attack. By analysing the susceptibility of trichome mutants, evidence is provided that indicates the influence of leaf trichomes on foliar fungal infections in Arabidopsis thaliana, probably by facilitating the adhesion of the fungal spores/hyphae to the leaf surface. A decreased trichome number in the hairless Arabidopsis mutant gl1 enhances tolerance against the necrotrophic fungus Botrytis cinerea. By contrast, the try mutant shows an increased susceptibility to both fungal infection and accumulation. Trichome density does not influence infection by the soil-borne pathogen Rhizoctonia solani. In addition, the influence of trichomes on foliar infection is supported by targeting the high-level expression of the Trichoderma harzianum {alpha}-1,3-glucanase protein to the specialized cell structures. Trichome expression of this anti-fungal hydrolase shows a significant resistance to infection by the foliar pathogen Botrytis cinerea. Resistance to this fungus is not dependent on the constitutive induction of the salicylic or jasmonic defence signalling pathways, but the presence of the {alpha}-1,3-glucanase protein in trichomes.

Keywords: Antifungal activity; phyllosphere; plant defence; Rhizoctonia solani; Trichoderma harzianum.
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 J. Cell Sci.Home page
Y. Wang, R. Liu, L. Chen, Y. Wang, Y. Liang, X. Wu, B. Li, J. Wu, Y. Liang, X. Wang, et al.
Nicotiana tabacum TTG1 contributes to ParA1-induced signalling and cell death in leaf trichomes
J. Cell Sci., August 1, 2009; 122(15): 2673 - 2685.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
J. A. Lake and R. N. Wade
Plant-pathogen interactions and elevated CO2: morphological changes in favour of pathogens
J. Exp. Bot., July 1, 2009; 60(11): 3123 - 3131.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.