http://www.bibsonomy.org/burst/user/ipazphyto/mutualismBibSonomy BuRST Feed for /user/ipazphyto/mutualism2008-10-07T18:38:18+02:00http://www.bibsonomy.org/bibtex/21b9b0a6020f1a708b22075bbf3726d4a/ipazphytoipazphyto2008-07-25T10:21:37+02:00IFZ mutualism induced_resistance compatibility root powdery_mildew endophyte <span style="color:#555555;">Frank <a href="http://www.bibsonomy.org/author/Waller">Waller</a> und Krishnendu <a href="http://www.bibsonomy.org/author/Mukherjee">Mukherjee</a> und Sachin D. <a href="http://www.bibsonomy.org/author/Deshmukh">Deshmukh</a> und Beate <a href="http://www.bibsonomy.org/author/Achatz">Achatz</a> und Monica <a href="http://www.bibsonomy.org/author/Sharma">Sharma</a> und Patrick <a href="http://www.bibsonomy.org/author/Schaefer">Schaefer</a> und Karl-Heinz <a href="http://www.bibsonomy.org/author/Kogel">Kogel</a> </span><em>JOURNAL OF PLANT PHYSIOLOGY</em><em>165(1):60-70</em>(<em>2008</em>)Fri Jul 25 10:21:37 CEST 2008JOURNAL OF PLANT PHYSIOLOGY160-70Systemic and local modulation of plant responses by Piriformospora indica and related Sebacinales species1652008IFZ mutualism induced_resistance compatibility root powdery_mildew endophyte Piriformospora indica is a fungus of the order Sebacinales (Basidiomycota) infesting roots of mono- and dicotyledonous plants. Endophytic fungal colonization leads to enhanced plant growth while host cell. death is required for proliferation in differentiated root tissue to form a mutualistic interaction. Colonization of barley roots by P. indica and related Sebacina vermifera strains also leads to systemic resistance against the leaf pathogenic fungus Blumerio graminis f.sp. hordei due to a yet unknown mechanism of induced resistance. In order to elucidate plant response pathways governed by these root endophytes, we analyzed gene expression in barley plants exhibiting an established symbiosis with P. indica 3 weeks after inoculation. P. indica-cotonized roots showed no induction of defence-related genes, white other genes showed a differential regulation pattern indicating a faster P. indica-dependent root development. Gene expression analysis of leaves detected only few systemically induced mRNAs. Among differentially regulated transcripts, we characterized the pathogenesis-related gene HvPr17b and the molecular chaperone HvHsp70 in more detail. HvPr17b shows similarity with TaWC15, a wheat gene inducible by chemical resistance inducers and salicylate, and was previously proven to exhibit antifungal activity against B. graminis. HvHsp70 is the first gene found to systemically indicate root colonization with endophytic fungi of the order Sebocinales. Both genes are discussed as markers for endophytic colonization and resulting systemic responses. (C) 2007 Elsevier GmbH. All rights reserved.http://www.bibsonomy.org/bibtex/29ccfb4de3003744a14daf5cb92d97211/ipazphytoipazphyto2008-05-14T10:24:29+02:00programmed_cell_death growth_promotion fungi arbuscular_mycorrhizal resistance_induction IFZ Sebacinales mutualism <span style="color:#555555;">Patrick <a href="http://www.bibsonomy.org/author/Schaefer">Schaefer</a> und Behnam <a href="http://www.bibsonomy.org/author/Khatabi">Khatabi</a> und Karl-Heinz <a href="http://www.bibsonomy.org/author/Kogel">Kogel</a> </span><em>FEMS MICROBIOLOGY LETTERS</em><em>275(1):1-7</em>(<em>2007</em>)Wed May 14 10:24:29 CEST 2008FEMS MICROBIOLOGY LETTERS11-7Root cell death and systemic effects of Piriformospora indica: a study on mutualism2752007programmed_cell_death growth_promotion fungi arbuscular_mycorrhizal resistance_induction IFZ Sebacinales mutualism The root systems of most terrestrial plants are confronted with a huge variety of invasive microorganisms that either can cause detrimental effects or in case of mutualistic symbiosis provide benefits for the host. In either case, establishment of the parasitic or mutualistic interaction is the result of a highly sophisticated cross-talk between the partners. Despite the ecological importance of mutualistic symbioses, the molecular events accompanied by this phenomenon are far from being understood. Piriformospora indica represents a recently discovered fungus that transfers considerable beneficial impact to its host plants. In this review, the current knowledge on this novel symbiosis is summarized by focusing on its biological effects in hosts and the role of programmed cell death in the establishment of the mutualistic interaction.